The New Sudoku Players' Forum

by **wapati** » Sun Oct 15, 2006 2:59 am

Four biggish steps, for me.

Code: Select all: .45...23. 8...4...7 6..2.8..9 ..34.69.. .8.....7. ..97.53.. 5..8.9..3 2...3...5 .98...41.

by **daj95376** » Sun Oct 15, 2006 5:33 am

wapati wrote:'Nother one that takes me several big steps.

Code: Select all
. 9 . | 2 . . | 1 4 . . 8 . | . 3 4 | . 2 5 . 4 3 | . . 1 | . . 8 --------------------- 1 . . | . . 3 | 8 6 . . . . | . 6 . | . 5 . 6 . . | 1 . . | . . 7 --------------------- . . . | . . . | 4 . . . 1 . | . . . | 5 8 2 . . . | 3 . 2 | . . .

Code: Select all: b2 - 6 Locked Candidate (1) c169 - 9 Swordfish r3c4 <> 69 Unique Rectangle Type 1 r7c4 <> 7 XYZ-Wing on [r8c4]

by **daj95376** » Sun Oct 15, 2006 6:08 am

Code: Select all: # Crazy 8s *-----------------------* | 4 . 2 | . 3 . | 6 . . | | 1 7 . | . . . | . 5 . | | 3 . . | . . 6 | . 1 . | |-------+-------+-------| | . . . | . 9 . | 3 4 7 | | . . . | 5 6 4 | . . . | | 2 4 9 | . 7 . | . . . | |-------+-------+-------| | . 1 . | 2 . . | . . 4 | | . 2 . | . . . | . 3 5 | | . . 4 | . 1 . | 2 . 6 | *-----------------------*

by **daj95376** » Sun Oct 15, 2006 6:24 am

Code: Select all: # What Fun *-----------------------* | 4 3 . | . . 6 | . 9 2 | | 1 . 8 | . . 9 | . 7 . | | 6 . . | . . . | . . . | |-------+-------+-------| | . . . | . 6 . | 4 . . | | 9 . . | 7 . 8 | . . 6 | | . . 4 | . 9 . | . . . | |-------+-------+-------| | . . . | . . . | . . 8 | | . 4 . | 2 . . | 9 . 3 | | 8 9 . | 6 . . | . 1 7 | *-----------------------*

by **Carcul** » Sun Oct 15, 2006 9:05 am

Code: Select all: *--------------------------------------------------------------* | 4 3 57 | 158 157 6 | 18 9 2 | | 1 25 8 | 345 235 9 | 6 7 45 | | 6 257 9 | 1458 1257 157 | 138 35 145 | |---------------------+--------------------+-------------------| | 2357 8 12357 | 135 6 1235 | 4 235 9 | | 9 15 1235 | 7 4 8 | 13 235 6 | | 235 6 4 | 135 9 1235 | 7 8 15 | |---------------------+--------------------+-------------------| | 23 157 6 | 9 1357 1357 | 25 4 8 | | 57 4 157 | 2 8 157 | 9 6 3 | | 8 9 23 | 6 35 4 | 25 1 7 | *--------------------------------------------------------------*

1. [r2c4]=3=[r2c5](=2=[r3c5])-3-[r79c5]=3=[r7c6]-{TILA(7): r1c3|r1c5|r7c5|r7c2|r3c2}.

So, r2c5<>3.

2. {ATILA(7): r1c3|r1c5|r3c5|r7c5|r7c2|r3c2},

and so r3c5=7.

Carcul

by **wapati** » Sun Oct 15, 2006 7:18 pm

daj95376 wrote:
Code: Select all
# What Fun

Great puzzle! (Added to my collection, thanks! )

by **wapati** » Sun Oct 15, 2006 10:50 pm

I see lots to do without chains, cool puzzle!

Code: Select all: Soaring Bird . . . | . . . | . 4 2 . 5 . | . 2 3 | 1 . . . . . | 9 . 7 | . . 6 --------------------- . . 5 | . 4 . | . 2 . . 2 . | 1 7 . | . . . . 3 1 | . . 8 | . . . --------------------- . 7 . | . . . | 6 8 . 9 . . | 7 . . | 2 . 5 5 . 2 | . . . | . 3 .

by **wapati** » Mon Oct 16, 2006 1:19 am

Hairy, below chins.

Code: Select all: ..13...5. .....7..9 5.4.61... 6....2.9. ..9....3. .731....4 ......8.. 3..72..4. .2...8...

by **daj95376** » Mon Oct 16, 2006 3:35 am

So little left, so much pain.

Code: Select all: *-----------------------* | . . . | . 4 5 | 2 3 . | | 8 3 . | . . . | . 6 . | | . . 4 | . . . | 5 . . | |-------+-------+-------| | 3 . 2 | 4 . . | . . 9 | | . 4 . | . . . | . 7 . | | 1 . . | . . 6 | 8 . 5 | |-------+-------+-------| | . . 7 | . . . | 9 . . | | . 8 . | . . . | . 2 1 | | . 2 6 | 7 1 . | . . . | *-----------------------*

by **wapati** » Mon Oct 16, 2006 6:56 am

Daj, I so much dislike colours and chains that I just don't read threads that deal with them.

Carcul does brilliance, finding a single step to solve what takes me many, I like knowing that there is a better way, or simpler.

Daj, I am not sure why you are posting chain puzzles here?

I started this thread for puzzles that never need chains, yet need many patterns. I like that. Chains just do not do it, for me.

<sigh>

by **Carcul** » Mon Oct 16, 2006 2:39 pm

Code: Select all: *-------------------------------------------------------* | 13 189 3789 | 68 5 16 | 79 4 2 | | 6 5 79 | 4 2 3 | 1 79 8 | | 2 148 48 | 9 18 7 | 3 5 6 | |------------------+------------------+-----------------| | 78 69 5 | 3 4 69 | 78 2 1 | | 48 2 69 | 1 7 5 | 48 69 3 | | 47 3 1 | 2 69 8 | 5 679 479 | |------------------+------------------+-----------------| | 13 7 34 | 5 139 2 | 6 8 49 | | 9 468 3468 | 7 368 46 | 2 1 5 | | 5 1468 2 | 68 1689 1469 | 479 3 479 | *-------------------------------------------------------*

R7c5=3 or r9c2=4. But:

[r7c5]-3-[r8c5]=3=[r8c3]=6=[r5c3]=9=[r4c2]=6=[r4c6]-6-[r1c6]-1-
-[r3c5]-8-[r3c3]-4-[r7c3]-3-[r7c5],

and so r7c5<>3 => r9c2=4 and the puzzle is solved.
Alternatively:

[r7c5]=9=[r7c9]=4=[r7c3]-4-[r3c3]-8-[r3c5](-1-[r7c5])-1-[r1c6]-6-[r4c6]
=6=[r4c2]=9=[r5c3]=6=[r8c3]=3=[r8c5]-3-[r7c5],

which implies r7c5<>1,3 => r7c5=9 and the puzzle is solved.

Carcul

by **Carcul** » Mon Oct 16, 2006 2:49 pm

Wapati wrote:Hairy, below chins

This puzzle is too easy:

Code: Select all: *-----------------------------------------------------* | 7 6 1 | 3 8 9 | 4 5 2 | | 8 3 2 | 45 45 7 | 16 16 9 | | 5 9 4 | 2 6 1 | 3 7 8 | |-----------------+----------------+------------------| | 6 4 58 | 58 3 2 | 17 9 17 | | 1 58 9 | 568 7 4 | 2 3 56 | | 2 7 3 | 1 9 56 | 56 8 4 | |-----------------+----------------+------------------| | 49 15 567 | 4569 145 3 | 8 2 1567 | | 3 158 568 | 7 2 56 | 9 4 156 | | 49 2 567 | 4569 145 8 | 1567 16 3 | *-----------------------------------------------------*

{ATILA(5,6): r8c9|r5c9|r6c7|r6c6|r8c6}

and so r8c9 must be "1", solving the puzzle.

Carcul

by **ravel** » Mon Oct 16, 2006 3:09 pm

Carcul wrote:
Wapati wrote:Hairy, below chins
This puzzle is too easy:

Already forgot the remote pairs Wapati ?

by **Carcul** » Mon Oct 16, 2006 3:25 pm

Daj95376 wrote:So little left, so much pain.

Code: Select all: *--------------------------------------------------* | 7 9 1 | 6 4 5 | 2 3 8 | | 8 3 5 | 29 279 279 | 1 6 4 | | 2 6 4 | 138 38 138 | 5 9 7 | |---------------+------------------+---------------| | 3 5 2 | 4 78 78 | 6 1 9 | | 6 4 8 | 159 59 19 | 3 7 2 | | 1 7 9 | 23 23 6 | 8 4 5 | |---------------+------------------+---------------| | 45 1 7 | 2358 2358 2348 | 9 58 6 | | 459 8 3 | 59 6 49 | 7 2 1 | | 59 2 6 | 7 1 89 | 4 58 3 | *--------------------------------------------------*

[r3c4]=1=[r3c6]=3=[r7c6]-3-[r7c45]=3|5=[r7c45]-5-[r8c4]-9-[r2c4]-2-
-[r249c6]-9-[r5c6]-1-[r5c4]=1=[r3c4],

=> r3c4=1 and the puzzle is solved.

Carcul

by **ronk** » Mon Oct 16, 2006 3:30 pm

Carcul wrote:{ATILA(5,6): r8c9|r5c9|r6c7|r6c6|r8c6}

and so r8c9 must be "1", solving the puzzle.

Looks a lot like overlapping turbot fish.

The New Sudoku Players' Forum

Fun puzzle. So many methods to solve. No CHAINS required.

What Fun

Soaring Bird