The New Sudoku Players' Forum

by **SteveG48** » Fri May 08, 2026 2:41 pm

Code: Select all: *-----------* |..4|...|82.| |..5|.1.|...| |.7.|...|.6.| |---+---+---| |1..|.34|..2| |...|.7.|...| |3..|56.|..9| |---+---+---| |.4.|...|.9.| |..3|.4.|6..| |.98|...|5..| *-----------*

by **Cenoman** » Fri May 08, 2026 9:56 pm

Code: Select all: +--------------------+--------------------------+-----------------------+ | 69 136 4 | 367 59 3567 | 8 2 1357 | | 2689 236 5 | 234678 1 23678 | 349 347 347 | | 289 7 12 | 2348 589 2358 | 1349 6 1345 | +--------------------+--------------------------+-----------------------+ | 1 568 b69 | 89 3 4 | 7 58 2 | | 4 58-2 a29 | 1289 7 1289 | 13 1358 6 | | 3 8-2 7 | 5 6 128 | 14 148 9 | +--------------------+--------------------------+-----------------------+ | 567 4 c16 | 13678 58 135678 | 2 9 1378 | | 257 d12 3 | 1789 4 15789 | 6 17 178 | | 67 9 8 | 1367 2 1367 | 5 1347 1347 | +--------------------+--------------------------+-----------------------+

XY-chain: (2=9)r5c3 - (9=6)r4c3 - (6=1)r7c3 - (1=2)r8c2 => -2 r56c2; ste

by **pjb** » Sat May 09, 2026 12:45 am

Code: Select all: 69 136 4 | 367 59 3567 | 8 2 1357 2689 236 5 | 234678 1 23678 | 349 347 347 289 7 12 | 2348 589 2358 | 1349 6 1345 ------------------------+----------------------+--------------------- 1 b568 9-6 | 89 3 4 | 7 58 2 4 b258 29 | 1289 7 1289 | 13 1358 6 3 b28 7 | 5 6 128 | 14 148 9 ------------------------+----------------------+--------------------- 567 4 a16 | 13678 58 135678 | 2 9 1378 257 b12 3 | 1789 4 15789 | 6 17 178 67 9 8 | 1367 2 1367 | 5 1347 1347

(6=1)r7c3 - (1=6)r4568c2 => -6 r4c3; stte

Phil

Steve Stumble 5-8-2026