The New Sudoku Players' Forum

by **200e200w** » Sun Mar 04, 2018 8:16 am

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

200e200w

by **Cenoman** » Sun Mar 04, 2018 5:45 pm

Two AIC steps:

Code: Select all: +--------------------+----------------------+-----------------------+ | 158 4 7 | 138 6 38 | 1235 9 123 | | 159 35 2 | 1349 7 349 | 8 1356 1346 | | 6 38 89 | 13489 5 2 | 137 137 134 | +--------------------+----------------------+-----------------------+ | 4 578 c589 | 29 38 79 | 6 13 123 | | 3 2 6 | 5 4 1 | 9 8 7 | | d9-8 78 1 | 269 38 679 | 23 4 5 | +--------------------+----------------------+-----------------------+ | a58 6 4 | 7 2 358 | 135 135 9 | | 2 9 3 | 468 1 4568 | 57 567 68 | | 7 1 b58 | 368 9 3568 | 4 2 368 | +--------------------+----------------------+-----------------------+

(8=5)r7c1 - r9c3 = (5-9)r4c3 = (9)r6c1 => -8 r6c1; 2 placements

Code: Select all: +-------------------+---------------------+-----------------------+ | 158 4 7 | 138 6 38 | d1235 9 e123 | | 15 35 2 | 1349 7 a34-9 | 8 d1356 1346 | | 6 38 9 | 1348 5 2 | 137 137 134 | +-------------------+---------------------+-----------------------+ | 4 578 58 | g29 38 h79 | 6 13 f123 | | 3 2 6 | 5 4 1 | 9 8 7 | | 9 78 1 | 26 38 67 | 23 4 5 | +-------------------+---------------------+-----------------------+ | 58 6 4 | 7 2 358 | 135 135 9 | | 2 9 3 | 468 1 b4568 | c57 c567 68 | | 7 1 58 | 368 9 3568 | 4 2 368 | +-------------------+---------------------+-----------------------+

(4)r2c6 = (4-5)r8c6 = (57-6)r8c78 = (65-2)b3p15 = r1c9 - r4c9 = (2-9)r4c4 = (9)r4c6 => -9 r2c6; stte

200e200w's Nightmare #33