The New Sudoku Players' Forum

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I've updated my old gattai code to make a few more:
- butterfly, 4 sudokus, x4 6-nonet overlap
- cross, 5 sudokus, x4 3-nonet overlap
- sensei-4, 2 sudokus, x1 4-nonet overlap
- tripledoku-4, 3 sudokus, x2 4-nonet overlap
- tripledoku-3, 3 sudokus, x1 3-nonet overlap, x2 2-nonet overlap

I generate between 30-60 of each type of puzzle, and keep between 10-15 for review, and select from these to publish one or two! I'll have to generate these puzzles in the hundreds to find harder puzzles - I've no time for that!!

The butterfly, sensei-4 and tripledoku-4 puzzles have clues in the nonets!

Download the zip file (pdfs inside) at the bottom of this post to see how the grids overlap.

Butterfly [MEDIUM, singles, locked candidates, pairs]

Code: Select all

..........3.5........1.42.8.....73.......1......3.......5.....7.2....8...8...91..
......4..5......1.1.42.89....73...4...1....9.3.....1.......7......8.......91.....
.....73.......1......3.......5.....7.2....8...8...91....45.29.3.3......6..1......
..73...4...1....9.3.....1.......7......8.......91.....5.29.3........6.5..........


Cross [MEDIUM, singles, locked candidates, pairs] [CLUELESS middle grid!]

Code: Select all

.....842.4..9..5.3.9.4....8534.......1.37.9........3.4...........................
.73..2...8........54..98...7............1.....68.5.......8.......692.....1.7.....
.................................................................................
.....1.6.....432.......2.......1.65.....3............2...58..37........6...3..12.
...........................2.7........3.56.7.......2964....7.6.5.6..8..2.194.....


Sensei-4 [FISHY, singles, locked candidates, couple pairs, one x-wing!]

Code: Select all

.1....36..5..3....783..12....92....3....987.............7...........259.6..3....2
2....3..7.987...........4.............259....3....28....18..736....6..4..67....9.


Sensei-4 [VERY EASY, naked singles only!]

Code: Select all

.8.7.3...........7.2.1..53..1..3.4....9.....3..36.97..6....18.4...8.....3.8..5.9.
.3.4..1.2.....3...6.97....5..18.45..8.....9....5.9..4..86..2.1.9...........9.8.5.


TripleDoku-4 [MEDIUM, singles, locked candidates, pairs]

Code: Select all

6.....813.18.2....5.................8.7..5...15.6........31.....6.....8.....7....
...........5....3.6........31.....7.....8.....7.....52........6.6....7...........
....7.....8.....9.....52........6.23...7..6.1.................6....3.91.765.....2


TripleDoku-3 [HARD, singles, locked candidates, a few pairs, one triple!]

Code: Select all

.1.7.4...6...9.....32......3..8..........1......3.....9..........8.......7.......
...3.7.4.....5...6......21......4..2...6..........2...........1......7.........9.
............................94...23....6.8...8.......9..........65.3.97....4.5...


ATTACHMENT
5.gattai.variants.zip (60,332 bytes)

[enxio27]

As always, thank you so much!

[enxio27]

I completed the Very Easy Sensei-4 without pencil marks. Not often I can do that with a gattai. It was a nice, quick puzzle, but not TOO easy.

It has also been a month since I finished a puzzle. Since the last one I completed, I've been trying unsuccessfully to get through tarek's Bank Holiday 1108 Sumo Special. Third attempt.