The New Sudoku Players' Forum

by **enxio27** » Wed Dec 25, 2013 11:07 pm

This is a repost of my message on the Sudocue forums, in case those go down. I've also posted it to Richard Broughton's SudokuSolver forums.

I've been "collecting" a bunch of Ruud's specialty puzzles that aren't found in the usual Sudocue archives--puzzles he's posted to various forums, etc. A few of these gems are on his specialty page, often accompanied by amusing descriptions (I've included those where possible). Here's what I've found so far, listed in chronological order by posting date. I hope you enjoy these.

Valentine Sudoku (February 13, 2006)
Found at http://www.setbb.com/sudoku/viewtopic.p ... udoku#4592

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Clueless Special #4a (March 26, 2006)
Found at http://xray.messageboard.nl/11712/viewtopic.php?p=4592 (forum link is dead)

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Clueless Special #4b (March 26, 2006)
Found at viewtopic.php?p=24457

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Clueless Special #4c (March 26, 2006)
Found at http://www.setbb.com/sudoku/viewtopic.p ... udoku#5334

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Marlie Special Clueless (April 5, 2006)
Found at http://xray.messageboard.nl/11712/viewtopic.php?p=4812 (forum link is dead)

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Clueless Special #6a (April 19, 2006)
Found at http://xray.messageboard.nl/11712/viewt ... &start=165 (forum link is dead)

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Clueless Special #7a (April 25, 2006)
Found at http://xray.messageboard.nl/11712/viewtopic.php?p=5279 (forum link is dead)

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Jigsaw Killer 34AW (May 8, 2006)
Found at http://www.setbb.com/sudoku/viewtopic.p ... udoku#5903

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Clueless Special #10a (May 17, 2006)
Found at http://xray.messageboard.nl/11712/viewt ... &start=240 (forum link is dead)

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Clueless Special #14a (June 12, 2006)
Found at http://www.sudoku.org.uk/cgi-bin/discus ... 8#POST5198 (forum link is dead)

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Clueless Special #18a/b (July 14, 2006)
Found at http://xray.messageboard.nl/11712/viewtopic.php?p=6258 (forum link is dead)

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Celebrity Killer (August 1, 2006)
Mentioned in Ruud's description of the Mystery Letter Sudoku at http://sudocue.net/special.php

Here is a list of names that you can use to determine the cage sums:

A = Shankar
B = Ball
C = Ono
D = Schindler
E = Kennedy
F = Krupa
G = Pritchard
H = Hampton
I = Mandela
J = Cage Cool
K = Flynn
L = Lovell
M = Fitzgerald
N = Patton
O = Shuster
P = Appel
Q = Welles
R = Kreiski
S = Guinness
T = Bohr
U = Piaf
V = Gillespie
W = Callas
X = Teller
Y = Barbera

To make this puzzle a little more RUUDICULOUS, I'm not telling you how to convert the list of names into cage sums, but you'll figure that out soon enough.

[I don't have the SumoCue code available. Can any of you help?]

Clueless Special #4d (August 13, 2006)
Found at viewtopic.php?t=3419&start=15

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12x12 DG (September 8, 2006)
Found at http://sudocue.net/special.php

12x12 Sudoku with Disjoint Groups. The given numbers have horizontal and vertical symmetry, which fits nicely with this format. You need more than just singles to solve it. The Disjoint Groups constraint may not be familiar to you. Every cell that has the same relative position in each 3x4 box must contain a different number. This extra constraint helps you solve the puzzle, but it is very hard to check, certainly in such a large puzzle.

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Crossword Killer 1 (September 15, 2006)
Found at http://sudocue.net/special.php

This puzzle is a mix of Killer Sudoku and Word Finder. Only a part of the 9x9 grid is covered with cages. The numbers in these cages must add up to the given sum. The cells which are not covered by cages must contain valid English words. For instance, there is a horizontal word of 4 letters in row 1, sharing the first letter with a vertical word of 8 letters in column 2. The normal Sudoku rules also apply, where you must use the number assigned to each letter. Without the Killer part, you cannot find the words. Without the words, you cannot solve the Killer part. The interaction between these 2 parts makes it one of the most challenging Sudoku variants.

[I don't have the SumoCue code available. Can any of you help?]

Crossword Killer 2 (September 28, 2006)
Found at http://sudocue.net/special.php

Dear diary. I have created a second Crossword Killer. No need to explain the rules again to those poor addicts. The 9 letter word should not be too difficult to guess, but if they cannot find it, they’d better not attempt to solve the puzzle. Although the set of letters were tempting me, I resisted using unseemly words in the puzzle.

[I don't have the SumoCue code available. Can any of you help?]

Killer X 01 (October 5, 2006)
Found at http://sudocue.net/special.php

The new Special is a Killer-X with a dazzling cage pattern. The are no single innies or outies. There are no pairs of innies or outies. There are plenty of triple innies and outies. 3 is the magic number. Do not forget the diagonals. They may help.

[I don't have the SumoCue code available. Can any of you help?]

Sukaku #001 (October 12, 2006)
Found at http://sudocue.net/special.php

I have a new program that can generate a very interesting variant of Sudoku. It is not new, but I’ve given it a new name.

[center]Suuji Kakure

[/center]

This translates into: “The digits are hidden”. Following an ancient Japanese tradition, I will call it Sukaku.

Complete the puzzle in such a way that each row, each column and each 3x3 box contains digits 1 through 9. Sounds familiar? In a Sukaku, there are no digits placed in the grid. Instead I will give you a grid with possibilities. Because there are no given numbers, the puzzle can be more difficult than the hardest Sudoku you've ever seen. This puzzle is not too difficult. I found some real baddies, which cannot be solved by some of the best solvers, which I will publish at a later date.

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Sukaku 1 (October 12, 2006)
Found at pencilmark-only-sudoku-t4929.html

Here is a Sudoku without given numbers. Instead, you have to start with the pencilmark grid. The absence of given numbers startles most solver programs, so you may have to use the grey matter for this one. The unique solution has been verified with DLX.

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Sukaku 2 (October 12, 2006)
Found at pencilmark-only-sudoku-t4929.html

I just found one that would enter the list of the most difficult Sudokus at #1. It scores 70070 in SudoCue, which needs 221 solving rounds, including 70 tabling steps and 1 guess.

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Sukaku 3 (October 12, 2006)
Found at pencilmark-only-sudoku-t4929.html

While I was fine-tuning my generator, it came up with a remarkable puzzle. Every constraint has at least 4 candidates left. There is no logical move to start with. SudoCue has to start with a guess (using brute force). There are 3 guesses needed with all techniques including tabling enabled.

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Relatively Easy Sukaku (October 13, 2006)
Found at http://www.setbb.com/sudoku/viewtopic.p ... udoku#6929

Here is a relatively easy puzzle that requires a hidden quad (in the 3rd step):

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Mystery Letter Sudoku (October 13, 2006)
Found at http://sudocue.net/special.php

Many people have solved this puzzle by now, thanks to a big hint by Motris. He happens to be a chemist.

This is a little one-off gimmick. To figure out the clues, you need to find a way to convert the letters into numbers. People who enjoyed my Celebrity Killer may think this is similar, but not so. Use the forum if you want to share your insights with fellow addicts. Once you know how to convert the letters into numbers, the Sudoku can be solved with moderate techniques. If nobody has found an answer in a week, I will post a small hint. Good luck with this one!

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Killer X 02 (October 27, 2006)
Found at http://sudocue.net/special.php

[I don't have the SumoCue code available. Can any of you help?]

Mystery Decompression Sudoku (November 10, 2006)
Found at http://sudocue.net/special.php
NOTE: Image is a SPOILER! Read below first!

Here is a new type of puzzle, inspired by a post on the Sudoku Programmers forum. The following line represents a Sudoku. The digits are the given numbers and the letters A, B, C and D replace the empty cells. Each letter represents a decompression instruction like “insert 2 empty cells”. The letters have no specific order. That would be too easy. However, to help you on your way, I will give you a hint: The given numbers form a symmetrical pattern.

Thanks to ocean who discovered an error in this string, but found the solution anyway. The error has been fixed.

A9CA37BD4AC1AC1C28BC68A9BC7DC1BCA7A64BA23C6B5AC2BC83AC9

My First Samurai (November 17, 2006)
Found at http://sudocue.net/special.php

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Asterisk Sudoku (November 23, 2006)
Found at http://sudocue.net/special.php

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Kazaguruma (Windmill) (November 28, 2006)
Found at http://sudocue.net/special.php

Now that the Samurai contest is going, I am honored to introduce to you a new type of overlapping puzzle. This puzzle has 5 overlapping sudokus, like a Samurai, but the overlap is 2 boxes in stead of one. Because the shape reminded me of a windmill, and because I live in Holland, I named this variant Kazaguruma, the Japanese word for windmill. This puzzle can be solved with relatively easy techniques, but you can also use the twin nonets technique to speed things up.

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Shaolin #001 (November 28, 2006)
Found at http://xray.messageboard.nl/11712/viewtopic.php?t=673 (forum link is dead)

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Code: Select all: 008400005050008040200010800000204600096000401040180009103000000670050000000001000 000001094900060208320004007400200900060030581080095000000506000000100000000080000 610400000203060007400800036006008005975040080000750010000904000000003000000080000 500006400040800060009070001008702000906000720400063050000000804000040017000200000 000000000000000000000000000000501000050040000003067001000904000000006000000010000 000000000000701000000000000000070000503602804000000000000000000000306000000905000 000000000000000000000000000000701000000030060500260300000609000000800000000070000 500006000800000000020100000001054000200093450000710000600370000080000000930080000 000037000000800000000025000620508009094070015000000040000000000000000000000000000 000410000000003000000560000800605017750090860090000000000000000000000000000000000 000500004000000009000004010000640200024390007000072000000016008000000030000050021 000406000000000000000500000000007095090040000000001024000300000000000000000604000 000000000000609000000040000002000700804705209005000300000090000000304000000000000 000106000000000000000009000140300000000010070760500000000005000000000000000703000 470050000010000000900410000000590000300086590009047000030900000200000000700001000 000000000000000000000000000000000020024090063960308004000042000000900000000073000 000000000000000000000000000010000000340010270700209034000480000000007000000960000 000050039000000050000039006000063000069580002000490600000002060000000004000600007 000060000000003000000509000001046008030090000000108000000000000000000000000000000 000402000000109000000000000000000000503704201000060000000000000000608000000000000 000090000000400000000208000200350700000040050000701000000000000000000000000000000 000006000210070000604000000020460005056000801000305400100080500040007010005600008 000050000000600000000309000070034000030010476800900100520001007400080502000003084 000070000000003000000501000000720030748030010005008009900600083501090007260800000 000500000000010096000000305100047050305000280006205000002070004080900070900003500

Shaolin-X #001 (X-Treme Shaolin) (November 28, 2006)
Found at http://www.sudocue.net/forum/viewtopic.php?t=418

I post this puzzle here just to show you that I can now create any Sudoku variant you can imagine. Here is a world-premiere: the Shaolin-X. It has 25 constituent Sudoku-X puzzles. 16 in a 4 x 4 formation, connected by 9 in a 3x3 formation. Pythagoras would have appreciated the beauty of these numbers. The total number of cells is 1701.

As for required solving techniques... I'm not sure. You need several moderate and advanced moves, but I cannot tell you the exact list of solving techniques. It has a guaranteed unique solution. I can also guarantee that this puzzle will definitely ruin your family life, if you had any left...

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Code: Select all: 004000060000230500008000000210004600000600000040000000800060000002500000000408000 300002000000003002000060000730080020000049000000000100000000000000900000000600000 000200006600800000000090000020080074000470000003000000000000000000007000000008000 010000700006032000000000600005900027000007000000000030000060009000008500000209000 000002000000050000000004000300000080000000100000007009000040000000209000000100000 000307000000504000000090000000050000700000004080709030000000000000000000000000000 000300000000070000000500000060000005008000000700200000000010000000709000000005000 600012000002000000100000000800000200070000013021000000000700000000000000000009000 000408000000600000000000000000300090000000000090580000000000000000000000000004000 000504000000009000000000000080001000000000000000057060000000000000000000000700000 000760009000000200000000004001000006670000090000000470000007000000000000000200000 000002000000100000000000000004005000030020000006007000000000000000500000000004000 000000000000000000000908000000000000004000200000000000000803000000000000000000000 000900000000005000000000000000700200000050070000200600000000000000002000000500000 000006000000000000000500000082000000030000075900000600800000000009000000500081000 000003000000000000000000000010530000000000000000400080000000000000200000000107000 000300000000000000000000000000015070000000000060002000000000000000006000000804000 000700000000000000000005000000000980680000020003000007000000008000000700000320009 000400000000609000000010000000001009000000200400000030000004000000080000000006000 000000000000000000000000000010603040400000005000070000000080000000701000000306000 000003000000805000000090000400500000007000000080000005000400000000080000000100000 000307000003100000200060000080000000000800000930004200001000000000680700004000020 000200000000500000000000000000000600000065000160070050000020000000006008300004000 000002000000009000000000000007000000000430000060020031000040000700900000000200006 000705000000002600000080001000000080000007000008300067000000800005048000070000500

Sumo #001 (November 30, 2006)
Found at http://www.sudoku.org.uk/SudokuThread.a ... 1#post8882 (forum link is dead)

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Clueless Sumo #001 (December 1, 2006)
Found at http://sudocue.net/special.php

This puzzle is a Sumo combined with a Clueless. There are 13 overlapping Sudokus in Sumo formation. The overlapping boxes are clueless. There is a 14th Sudoku formed by the blue cells. This Sudoku is also completely clueless. The resulting puzzle has 25 empty boxes. It can be solved with basic techniques: singles, locked candidates and subsets.

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Clueless Shaolin-X #001 (December 1, 2006)
Found at viewtopic.php?t=5099

This is the worst monstrosity I've ever created and I would like to share it with you.

The basic puzzle is a Shaolin or Gattai-25. In addition, the blue boxes, when combined, form a 26th sudoku. All overlapping regions (yellow and blue) are clueless. As it happens, 22 additional boxes also turned out to be clueless. All 26 constituent puzzles, including the blue one, are Sudoku-X, so the diagonals also need to contain digits 1 through 9.

As for required solving techniques: think singles, locked candidates, pairs and triples, crossovers, simple coloring and XY-Wings in the diagonals.

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Code: Select all: 600008300000040002100200070003000020500020900000050700300060000000500000050032000 700300050204000060000000000000450000000089000040020000000002000000500000000070000 060004005070000206000000000000041000000730000000090070000500000000007000000080000 004800003600090000080002009040000300002080005008040000000020007000004000000650030 000000000000000000000000000000000081104000000000000000000025000000070000000080000 000703000000090000000000000090000060000000000002000300000000000000905000000000000 000000000000000000000000000490000000000000701000000000000360000000040000000090000 004030000001000000000000000270010000005000000008007000000000000000800000000070000 000000000000000000000000000000000000020100000000290840000000000000010000000000000 000000000000000000000000000000000000000007030059038000000000000000060000000000000 000030400000000700000000000000070019000000300000500200000000000000008000000050000 000000000000800000000000000000000000005000000000000000000000000000200000000000000 000802000000000000000904000000000000090000050000000000000406000000000000000309000 000000000000003000000000000000000000000000100000000000000000000000007000000000000 000080000000100000000000000001005000009000000450090000000000000008000000005070000 000000000000050000000000000000830420010500000000000000000000000000000000000000000 000000000000030000000000000046019000000004010000000000000000000000000000000000000 000080000000007000000000000000700900000000400000060035000000000000000500000090700 000060000000080000000094000000000000508000000000000082000000000000000000000000000 000000000000406000000000000007000400000000000080000060000000000000060000000208000 000020000000030000000780000000000000000000902370000000000000000000000000000000000 090061000000200000100040000000080100800070300009000070500900080000020003300005400 000090000000800000000006000030040000000038000000160000000000000307000040600400080 000080000000006000000500000000050010000420000000069000000000000060000402020005001 000160030000004000000090006006050000007040005050000400090003008800070000005400009

Christmas Tree (December 11, 2006)
Found at http://www.sudoku.org.uk/SudokuThread.a ... 1#post8894 (forum link is dead)

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Killer X 03 (December 16, 2006)
Found at http://sudocue.net/special.php

[I don't have the SumoCue code available. Can any of you help?]

New Year's Eve Fireworks (December 21, 2006)
Found at http://www.sudoku.org.uk/SudokuThread.a ... 1#post8930 (forum link is dead)

[NOTE: Each numeral is a separate puzzle, and therefore has a separate codestring.]

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Code: Select all: 080000040000000000000000000637000124000010000000000000006709400000000000000030000 000000006010059000000000000000081000004000060700004900000076020009000030800000007 400000000000760080000000000000130000040000300001900004050210000060000200200000003 050210000060000200200000003000000000000000050600000002000700008000390000000400001 000000000000802000000000000005000300000000000000000000003000200050060040060509080 600000003009000050000053060400009800007000090000068000000000000060087000000000009 000000000060087000000000009000400000020000000000000861000020000002000000070000010 000060000000000000009201300000000000000080000861000735000000000000000000010000050 000000000000280030300000000000002000000000050735000000000070000000000400050000060 000040000000907000000802000410506083009000400070403060000060000000080000900000001 000000000000108000006000900000000070000000040050003006004900000500000019000000000 000000000000604000001000900070000000040000000900100040000006200230000008000000000 004900000500000019000000000000000800050000000037001500000003000000000000000008000 000006200230000008000000000001000000000000050007100320000600000000000000000200000 000003000000000000000008000064002700010000000000000200000000000200000071001600000 000600000000000000000200000001800250000000060005000000000000000290000003000006400 000000000200000071001600000020004008000000090000000050003000500000405000000000000 000000000290000003000006400300100080040000000060000000003000200000204000000000000 500000003000020000000030000030902070005000300890103045000204000000301000000080000 000103000600020009100907002210000087000090000000702000000000000300000008000000000 900000000700000300000700000010000000000000008009021000000000090000000000000010080 000000006008000001000006000000000060300000000000360700020000000000000000070020000 000000090000000000000010080000000000100605000024309001000046000010000300000031000 020000000000000000070020000000000000000503007900702510000290000008000040000470000 000046000010000300000031000061403007400605000000000000000070030000000000000000070 000290000008000040000470000500802910000903008000000000050030000000000000010000000 000070030000000000000000070007095000000000009060000000000700000400000700700000000 050030000000000000010000000000490700400000000000000040000005000003000008000000005 000000000700000003000000000000709000000030000670000031500903006300080009000604000 005000000020000800400000002000000000000090020300000480000000000000700000000540000 000205000800000004002000300000000000020609050480000097000702000000000000000806000 000000500004000090300000002000000000050040000097000005000000000000004000000073000 000000000000004000000073000000000000800000605090000002000000000000000000609000000 000000000000000000304609000000002000020000000000000500050080000000000000010070000 010050080000000000050010070000000000000020000700000008307201509000000000000000000 307201509000000000000000000060000080001070400000000000000607000000000000000908000 000607000000000000000908000470000063030405090000000000002000700900000001000803000

Shogun-X #001 (January 3, 2007)
Found at http://sudocue.net/forum/viewtopic.php?t=476

Here is a new challenge: Shogun-X (watch those diagonals!)

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Sumo-X #001 (January 21, 2007)
Found at http://sudocue.net/forum/viewtopic.php?t=515

Here is a Sumo-X puzzle I made today. It can be solved with the usual techniques for Clueless and Samurai.

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Samurai-X #001 (January 25, 2007)
Found at http://sudocue.net/forum/viewtopic.php?t=529

Nice Samurai-X puzzle, with several hurdles in the solving path.

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Killer X 04 (January 27, 2007)
Found at http://sudocue.net/special.php

[I don't have the SumoCue code available. Can any of you help?]

16x16 (January 30 2007)
Found at http://www.sudocue.net/forum/viewtopic.php?t=543

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Clueless Shaolin-X #002 (February 6, 2007)
Found at http://sudocue.net/special.php

This is a monster that you will only find on this website, because nobody else has the guts to make such puzzles.

Be warned. Be scared. Be prepared to take on this Clueless-Shaolin-X. 26 interlinked puzzles, number 26 being the combination of the blue boxes. Diagonals also need digits 1 through 9 in all 26 constituent puzzles. And of course, all overlapping regions are clueless...

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Code: Select all: 730150000000009000809400000008000000007200400045000001000380000503000000010000000 000500000080010003000000400031000600000000930900000002000100000000000000000600000 000006000600080040007000000004000950051000000700000002000005000000000000000002000 000028049000900000000006308000000100006002800400000250000041000000000705000000030 000000000000500000000000000710000000000000580000000000000108000000305000000000000 000000000000000000000000000002000500003000900000000000000050000000148000000000000 000000000000007000000000000000000019032000000000000000000602000000503000000000000 000100000000340000040509000002000000009400020060000089020010000100000000000000000 000100000000094000000000000000000000007005000950000000000000000000030000000809000 000002000000530000000000000000000000000100400000000032000000000000070000000206000 000009000000031000000208030000000400040007300590000020000010090000000003000000000 000000000000008000000000000000000000030000000000000000000000000000002000000000000 000000000000302000000000000000000000000000000000000000000000000000903000000000000 000000000000700000000000000000000000000000030000000000000000000000400000000000000 000000000700000000030060000020000018007900040004000000080601000000420000000500000 000208000000010000000000000450000000002006000000000000000000000000021000000900000 000408000000030000000000000000000049000200500000000000000000000000380000000001000 000000000000000005000070020420000090080007200000000500000203040000054000000001000 000000000000402000000905000000000000000000830670000000000000000000800000000000000 000000000000791000000080000000000000004000200001000300000000000000000000000000000 000000000000702000000906000000000000095000000000000029000000000000007000000000000 040000000608000000000420000057000006001700800003000000506100000000005000830640000 000200000000000000000300000400000001000000590056000200000000900080090003000700000 000008000000000000000009000100000005085000000003000460004000000900040010000001000 000000010000000408000097000100000680004009300000000100000001209000900000000072063

Name that Album Killer (February 13, 2007)
Found at http://www.sudocue.net/forum/viewtopic.php?p=1915

Here's a puzzle in a series that I started on another forum. The puzzle requires 2 answers:

1. The solution of the Zero-X-Killer on top.
2. The name of the album below the killer.

I removed artist and title, so you have to browse your CD collection to find it. It was released in 1996. The killer is Ruudiculous until proven otherwise...

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Clueless Shaolin-X #003 (Valentine Special) (February 14, 2007)
Found at http://sudocue.net/special.php

Another Clueless-Shaolin-X. Even the center Sudoku is Clueless. This is a Valentine-Special...

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Code: Select all: 073508010000019000108000090007001000000004100290080000000000000002000000400000000 700000000000009103000060007000097000350100904900000000000000000000002000000400000 000000009501800000400060000000750000306009025000000003000000000000200000000005000 060105240000430000080000703000200800008500000000070052000000000000000500000000001 000001000000000000000804000000000070000000000009000000000070000000040000000020000 000000000000000000000010000509000401000000000040000080000000000000000000000030000 000500000000000000000602000090000000000000000000000700000040000000070000000050000 000610000005000000060000000000050000000008000000000008070000000100000000502070000 000000000000900000000000000040000500009000000000090030000000000000020000000000000 000000000000004000000000000004000050000000600090030000000000000000040000000000000 000019000000000800000000030000020000000700000200000000000000050000000003000090702 000700000000000000000001000000000020000000030000000040000002000000000000000300000 000000000000000000000000000000000000000000000000000000000000000000000000000000000 000001000000000000000900000020000000070000000050000000000200000000000000000005000 902080000500000000030000000000000007000008000000070000090000000005000000000790000 000000000000090000000000000000050060009000000060000200000000000000900000000000000 000000000000010000000000000070030000000000200006000070000000000000003000000000000 000070506000000003000000080700000000000800000000040000000000070000000800000083000 000030000000060000000020000007000000000000000000000050000603000000000000000004000 000010000000000000000000000040000090000000000509000601000070000000000000000000000 000010000000060000000030000000000400000000000040000000000605000000000000000400000 600000000003000000000000000580020000000005600004001000401000090000032000029107060 000200000000007000000000000200000000360700105000086000000070008000004306900000000 000007000000200000000000000000000003703008056000730000100070000504600000000000005 000000003000000100000000000000090078009600000000700900090000506000930000040801320

Clueless Sumo-X #001 (March 17, 2007)
Found at http://sudocue.net/special.php

This puzzle has several X-Wings that you may need to complete it.

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Mystery Music Killer (April 4, 2007)
Found at http://sudocue.net/special.php

A Killer that needs some research done before you can even attempt to solve it. Warning: No compilations were used in the creation of this puzzle.

A: Michael Bublé - I've Got You Under My Skin
B: Jamiroquai - Mr.Moon + Space Cowboy
C: Christina Aguilera - Still Dirrty
D: Norah Jones - Broken + Little Room
E: Sinéad O'Connor - Thank You for Hearing Me
F: Fiona Apple - Pale September (x 2)
G: Depeche Mode - Goodnight Lovers
H: Justin Timberlake - Right for Me + Still on My Brain
I: Smashing Pumpkins - Age of Innocence
J: Inspiral Carpets - Sackville
K: Oasis - Morning Glory
L: Heather Nova - Verona
M: Snow Patrol - Headlights on Dark Roads
N: Eels - Ant Farm + Hospital Food
O: Skunk Anansie - I'm Not Afraid
P: Prodigy - Climbatize + Mindfields
Q: John Legend - Another Again
R: Mika - Big Girl (You Are Beautiful)
S: Massive Attack - Mezzanine + Exchange
T: Everything But the Girl - The Only Living Boy in New York
U: India.Arie - Simple + Nature
V: Rolling Stones - Infamy
W: Blur - This Is a Low
X: Kula Shaker - Tattva + Smart Dogs
Y: Arctic Monkeys - When the Sun Goes Down + From the Ritz to the Rubble
Z: Moloko -Keep Stepping
$: Maria Mena - Calm under the Waves
&: Radiohead - Let Down
#: Katie Melua - Blues In the Night

[I don't have the SumoCue code available. Can any of you help?]

by **enxio27** » Wed Dec 25, 2013 11:09 pm

Here's part 2 (this forum allows only 100,000 characters in a single message

)

Easter-X (April 8, 2007)
Found at http://sudocue.net/special.php

The Easter Bunnies hid a couple of X in this Easter Special.

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007 Killer-X (April 2007?)
Found at a forum that is now dead. Date is approximate.

This is a Zero Killer-X on the 007 theme. The candidates are two 0s and 1-7; no repeats on the diagonals. This is a "twin" puzzle, both grids have to be used together to obtain a unique solution.

[I don't have the SumoCue code available. Can any of you help?]

Queen's Day Special Clueless Taiken-X (April 24, 2007)
Found at http://sudocue.net/special.php

Each April 30, here in Holland we celebrate an ancient tradition: Queens’s Day. Sort of Independence Day without the "in" part. That day, the Queen and her family go visit and pretend to like their subjects who pretend to like them back. Orange is the color of choice on Queen’s Day.

The following puzzle is dedicated to our beloved Queen. It is Big, Orange and Clueless. All constituent Sudokus, including the 22nd Clueless Sudoku in the blue cells, require digits 1 through 9 in both diagonals.

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Catch-22 Taiken (April 24, 2007)
Found at http://sudocue.net/forum/viewtopic.php?t=671

This puzzle is similar in shape to the Queens Day puzzle on the special page, but all comparisons end there. This puzzle is bad, reeeeally bad! The only sure facts about this puzzle are a) it has a single solution b) basic techniques will only solve 26 cells.

The name refers to the 22 constituent puzzles, intertwined in such a way that there's no escape. All constituent sudokus have diagonal constraints and the blue cells form a 22nd sudoku with the same constraints.

Joseph Heller wrote:There was only one catch and that was Catch-22, which specified that a concern for one's own safety in the face of dangers that were real and immediate was the process of a rational mind. Orr was crazy and could be grounded. All he had to do was ask; and as soon as he did, he would no longer be crazy and would have to fly more missions. Orr would be crazy to fly more missions and sane if he didn't, but if he was sane he had to fly them. If he flew them he was crazy and didn't have to; but if he didn't want to he was sane and had to. Yossarian was moved very deeply by the absolute simplicity of this clause of Catch-22 and let out a respectful whistle."
"That's some catch, that catch-22," he observed.
"It's the best there is," Doc Daneeka agreed.

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Clueless Taiken #003 (May 1, 2007)
Found at http://sudocue.net/forum/viewtopic.php?t=680

22 sudokus with strong links, one of them disjoint, blue and clueless. You know the drill. This one's easier, so no medal for the winner.

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Clueless Taiken #004 (May 1, 2007)
Found at http://www.dailysudoku.co.uk/sudoku/for ... t=gattai22

To celebrate the return of this forum and get it going again, here is a Gattai-22 with a clueless component. The 21 visible Sudokus are overlapping like a normal Gattai. The blue boxes belong to the 22nd Sudoku.

Moderate solving techniques are sufficient to solve this puzzle, but the sheer size makes it error-prone. To give you an impression: there are 110 hidden pairs in the shortest solving path...

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Shogun #002 (May 4, 2007)
Found at http://www.sudoku.org.uk/SudokuThread.a ... 1#post9160 (forum link is dead)

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Sumo #002 (May 4, 2007)
Found at http://www.sudoku.org.uk/SudokuThread.a ... 1#post9160 (forum link is dead)

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Shaolin #002 (May 4, 2007)
Found at http://www.sudoku.org.uk/SudokuThread.a ... 1#post9160 (forum link is dead)

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Taiken #002 (May 4, 2007)
Found at http://www.sudoku.org.uk/SudokuThread.a ... 1#post9160 (forum link is dead)

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Ronin Samurai-X (May 28, 2007)
Found at http://sudocue.net/forum/viewtopic.php?t=701

In ancient Japan, a Samurai who has lost his master was called Ronin. These uncontrollable outlaws often caused uproar in the country. So much for today's history lesson...

I decided to call this Samurai-X Ronin because it is impossible to master. It has only 70 clues. To give you an impression: The full suite of techniques for the regular Samurai puzzles (with Diagonal techniques added) only manage to solve 2 cells.

If you can avoid bifurcation (a euphemism for 'guessing'), this will be a great exercise to discover multi-grid AIC's, BUG-Lites and coloring patterns. Do not forget the diagonals. They will be needed.

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Black Friday Taiken (July 13, 2007)
Found at http://sudocue.net/special.php
A printable version can be found here that is easier on the eyes as well as on the print cartridge.

We were all shocked by a total forum blackout today. Ten years from now, addicts will still remember this day and ask each other: "Where were you when the forum went down on sudocue.net?". They may even write a song about the event.

The following Taiken will make sure we never forget! You need some creative moves to solve this puzzle, but it does not require any trial & error.

Erm ... where do I write pencilmarks?

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Kazaguruma-X #001 (July 16, 2007)
Found at http://www.setbb.com/sudoku/viewtopic.php?p=8293

Since I seem to be the only one who makes these...

Here's some testing material (with diagonals):

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Holiday Special Clueless Taiken-X (July 19, 2007)
Found at http://www.sudocue.net/forum/viewtopic.php?p=3101

Combining variations and turning them into huge overlapping puzzles is fun, especially when the outcome is a great puzzle. This Holiday Special will keep you busy during those long hours on the beach with no Internet access and too much time on your sweaty hands. 8-)

The format is a Clueless-Taiken-X. Look at all those empty nonets! It's not as bad as Catch-22, but close.

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First 12-Clue Sudoku-X (July 23, 2007)
Found at http://www.sudocue.net/forum/viewtopic.php?p=3142

The minimum number of clues for a Sudoku-X has been 13 for the last two years. This weekend, I started a search for more 13's and possibly a 12. Here's a 12 I found this morning.

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Clueless Windoku-X (August 11, 2007)
Found at http://www.sudocue.net/forum/viewtopic.php?t=624

Here is a fullsize Clueless Wind-X. Each of the 13 constituent puzzles is a Sudoku-X. Of these, 4 are placed in a familiar Windoku pattern and completely clueless.

This puzzle is very tough, but it helps when you discover the twin nonets and the 36 hidden groups. Oops, now I said it! :oops:

Happy puzzling!

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Clover (August 12, 2007)
Found at http://www.sudoku.org.uk/SudokuThread.a ... 1#post9211 (forum link is dead)

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Clover-X (August 16, 2007)
Found at http://www.sudoku.org.uk/SudokuThread.a ... 1#post9226 (forum link is dead)

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Clueless Sumo-X #002 (October 25, 2007)
Found at http://sudocue.net/forum/viewtopic.php?t=829

Here is a "biggie" for the fans of large overlapping Sudoku-X puzzles with a touch of Clueless:

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Mother of All Gattai #1 (October 27, 2007)
Found at http://sudocue.net/forum/viewtopic.php?p=3892

This is MOAG. You should treat MOAG with some respect, for she is the Mother Of All Gattai. MOAG has 61 constituent Sudoku grids, 4041 cells and 36369 initial candidates.

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Mother of All Gattai #2 (October 27, 2007)
Found at http://www.djape.net/sudoku/forum/viewtopic.php?t=1162 (forum link is dead)

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Jigsaw Center Dot Killer (November 2, 2007)
Found at http://www.sudocue.net/forum/viewtopic.php?p=3945

Here is the fulfillment of the number 4 prophecy. The blue cells can be seen as a center-dot group or a size-9 cage as shown in the picture. Number 4 is jumping right at you. The other numbers are not so forthcoming...

PS: It has (4+4) cages of size 4. This would have been TJK32. (4+4)x4=32. :pallid:

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Diagonal Surprise Assassin (November 11, 2007)
Found at http://www.sudocue.net/forum/viewtopic.php?p=4010

Not a V2, but a brand new challenge with unorthodox (unorthogonal) cage shapes. For those who are familiar with old Dutch traditions, you know where those candy colors refer to...

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Daddy of All Gattai #1 (November 11, 2007)
Found at http://sudocue.net/forum/viewtopic.php?t=843

Glyn wrote:If Ruud ever posts a DOAG (85 puzzles) the number of overlapping regions will be gross.

Indeed...

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Daddy of All Gattai #2 (November 15, 2007)
Found at viewtopic.php?t=5705

There are 85 overlapping Sudokus. The number of overlapping regions is gross.

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Samurai with 6 Center Clues (November 17, 2007)
Found at viewtopic.php?t=5724

Here is a Samurai with 6 clues in the center grid:

Hidden Text: Show

Samurai with 8 Center Clues (November 17, 2007)
Found at viewtopic.php?t=5724

With full symmetry, 8 clues in the center grid, all in a single box:

Hidden Text: Show

Killer X-mas tree (December 20, 2007)
Found at http://www.sudocue.net/forum/viewtopic.php?p=4278

Here is a V2X of this week's Assassin. It is solvable by logic, but you need a lot of it. Fortunately, you will have a little more time now with the upcoming Holidays, for which I wish you all the best.

Hidden Text: Show

by **enxio27** » Wed Dec 25, 2013 11:37 pm

I have now combed through all of Ruud's posts in the still-existing forums he used to frequent, and I've posted all of his specialty puzzles I could find, including the killer, jigsaw, letter, etc. I previously skipped. I've added codes for almost all of the puzzles (help with the codes for a few killers as noted would be much appreciated) and Ruud's often-amusing puzzle descriptions. I've also marked (hopefully) all of the broken forum links.

I am still missing one of his puzzles (no image or puzzle code available at all). If you can help with this one, please let me know!

Clueless Jigsaw (September 11, 2007)
Found at http://www.sudocue.net/forum/viewtopic.php?t=793

Also, I'm missing original images of the following puzzles. I've recreated images using the puzzle codes, but Ruud's puzzle images were usually interesting, and often significant to the puzzle (although not essential for solving). If you have copies of the original images, I would really like to have them. I suspect that the image for the Name that Album Killer was the album cover art, and Ruud mentioned that the image of the Diagonal Surprise Assassin had something to do with traditional Dutch candy.

Name that Album Killer (February 13, 2007)
http://www.sudocue.net/forum/viewtopic.php?p=1915

First 12-Clue Sudoku-X (July 23, 2007)
http://www.sudocue.net/forum/viewtopic.php?p=3142

Jigsaw Center Dot Killer (November 2, 2007)
http://www.sudocue.net/forum/viewtopic.php?p=3945

Diagonal Surprise Assassin (November 11, 2007)
http://www.sudocue.net/forum/viewtopic.php?p=4010

Finally, if you discover one I've somehow missed, please post here so that I can add it to the collection.

by **Smythe Dakota** » Wed Apr 23, 2014 6:24 am

enxio27 wrote: .... this form allows only 100,000 characters in a single message ....

Yikes! I never would have dreamed that anybody would exceed such a limit. Congratulations!

I'll stop now, before I reach 50,000.

Bill Smythe

The New Sudoku Players' Forum

Ruud's specialty puzzles

Ruud's specialty puzzles

Re: Ruud's specialty puzzles

Re: Ruud's specialty puzzles

Re: Ruud's specialty puzzles