The New Sudoku Players' Forum

by **speter** » Wed Oct 10, 2018 3:00 am

The following puzzle, as is, it has > 500 solutions.
Fire a canon at it and you can solve it.

Code: Select all: ......... ......6.5 .....8... .87..5..1 ......52. 6...1..7. ..93.4... .4.2..... 83.5...1.

Enjoy.

by **enxio27** » Wed Oct 10, 2018 1:19 pm

Not going to waste my time on an invalid puzzle. :roll:

by **eleven** » Wed Oct 10, 2018 7:30 pm

If the puzzle solution is canonicalized, the first row is 1-9. Then it is not hard to get a solution.

by **speter** » Wed Oct 10, 2018 10:29 pm

OK, so that wasn't a particularly interesting puzzle.

How about this one:

Code: Select all: . . . | . . . | . . . . . 6 | . 9 . | 4 . . . . . | . . . | 2 . . ------+-------+------ . . . | . . . | . . . . . . | . . 7 | . . 6 . . 4 | . . . | . 1 . ------+-------+------ . . . | 6 . . | . 4 . . 7 . | . . . | . . . 5 . . | . . . | 8 . . ...........6.9.4........2................7..6..4....1....6...4..7.......5.....8..

Enjoy.

by **eleven** » Thu Oct 11, 2018 6:00 am

With respect to a one-step solution the first one is interesting.

by **eleven** » Thu Oct 11, 2018 4:53 pm

Hm, no takers. here is mine:

Code: Select all: *----------------------------------------------------* | 1 2 3 | 4 5 6 | 7 8 9 | | 49 7 8 | 1 239 239 | 6 34 5 | | 459 6 45 | 7 39 8 | 1 34 2 | |---------------+----------------+-------------------| | 234 8 7 | 69 234 5 | *34 69 1 | | c34 9 1 | 68 347 b37 | 5 2 68 | | 6 5 c#24 | 89 1 23 | *3489 7 *348 | |---------------+----------------+-------------------| | 257 1 9 | 3 678 4 | 28 56 678 | | 57 4 56 | 2 6789 1 | 389 569 3678 | | 8 3 6-2 | 5 679 b79 |a#24+9 1 467 | *----------------------------------------------------*

Almost w-wing 24r6c3,r9c7, strong link for 4 in box 6 4r46c7=r6c79 => 2r6c3=r9c7
2r6c3,r9c7 == 9r9c7 - (9=3)r59c6 - (3=2)r5c1,r5c3 => -2r9c3, stte

an invalid puzzle that you can solve ;)