The New Sudoku Players' Forum

by **evert** » Sun Jan 20, 2008 5:33 pm

Hi all,

I'm working on combining windoku (NRC) with two diagonals (windoku X).
If anyone did this before I'd be interested in some of your examples.

Here's one:

Code: Select all: 060007000 800030009 009000000 034800000 000000000 000006500 000000000 300000004 100079000

(I didn't yet add the interactions between diagonals and boxes/ NRC-boxes.)

by **HATMAN** » Sun Jan 20, 2008 6:09 pm

Evert

I've been collecting impossible constraint combinations. X interacts well with WinDoku but if you add the Anti-kNight constraint there is no solution.

H3lix gives an elegant proof of why not at:
http://www.djape.net/sudoku/forum/viewtopic.php?t=1170

I'll give this one a try.

by **evert** » Sun Jan 20, 2008 11:05 pm

What about Windoku - AntiKnight (no X)?

I found some Windoku X puzzles that actually need interactions between the boxes, NRC-boxes and the diagonals:

Code: Select all: 000000000 000000000 090000000 000050000 007000000 000060000 308004000 000000067 002510000 200090000 030000000 000000000 000000040 800001000 000000000 060000000 000000970 000003506 000000020 000000000 000004096 000000300 003000001 000000800 000300700 000000000 000900000 060000900 000040000 000080072 020000000 400003500 000500006 000000000 000000000 000000000

by **evert** » Mon Jan 21, 2008 1:12 am

I improved my program slightly, and found the following puzzles, which my earlier version couldn't solve:

Code: Select all: 000000000 000001070 000200800 000010006 000090000 000000000 030000000 002500009 070000000 000005000 000800000 200000000 000000000 050000000 781300000 600000030 000080004 000000000 000003060 000000000 000000100 000000070 300020000 080000000 000000000 400070000 006890000

by **HATMAN** » Mon Jan 21, 2008 1:09 pm

I'll give the later ones a try

WinDoku anti-kNight (W AN) works but WinDoku Anti-kNight Anti-King (W AN AK) does not.

Your first one solved on doubles and singles if you use all the interactions.

by **evert** » Fri Mar 07, 2008 12:35 pm

HATMAN wrote:WinDoku anti-kNight (W AN) works but WinDoku Anti-kNight Anti-King (W AN AK) does not.

Here's a windoku-AN:

Code: Select all: 000000080 000030501 000004000 000000060 000000000 000000000 040005000 000090002 000000000

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