The New Sudoku Players' Forum

by **m_b_metcalf** » Tue Apr 21, 2026 9:56 pm

Code: Select all: . . . . . . . . . . . . . . 1 . . 2 . . . . 3 . 4 5 1 . . 1 . 6 . . . . . . 6 . . . 1 7 8 . . 9 . . 5 6 . 4 . 1 8 . 2 6 5 . . . 6 5 . 4 3 8 . . 9 3 4 . 5 8 . . 6 32 clues, minimal ..............1..2....3.451..1.6......6...178..9..56.4.18.265...65.438..934.58..6

Mike

by **pjb** » Tue Apr 21, 2026 11:29 pm

Code: Select all: 1 459 2 | 456 78 49 | 3 68 79 456 459 3 | 456 78 1 | 79 68 2 b68 89 7 |a26 3 29 | 4 5 1 ------------------------+----------------------+--------------------- 348 248 1 | 2348 6 7 | 29 239 5 345 245 6 | 234 9 24 | 1 7 8 c38 7 9 | 38 -2 1 5 | 6 d23 4 ------------------------+----------------------+--------------------- 7 1 8 | 9 2 6 | 5 4 3 2 6 5 | 17 4 3 | 8 19 79 9 3 4 | 17 5 8 | 27 12 6

Surprisingly straightfoward after last two challanges:
(2=6)r3c4 - (6=8)r3c1 - (8=3)r6c1 - (3=2)r6c8 => -2 r6c4; stte

Phil

by **Leren** » Tue Apr 21, 2026 11:44 pm

Code: Select all: *------------------------------------* | 1 459 2 | 456 78 49 | 3 68 79 | | 456 459 3 | 456 78 1 | 79 68 2 | |b68 89 7 |a26 3 29 | 4 5 1 | |-----------+------------+-----------| | 348 248 1 | 2348 6 7 | 29 239 5 | | 345 245 6 | 234 9 24 | 1 7 8 | |c38 7 9 |d38 1 5 | 6 23 4 | |-----------+------------+-----------| | 7 1 8 | 9 2 6 | 5 4 3 | | 2 6 5 | 17 4 3 | 8 19 79 | | 9 3 4 | 17 5 8 | 27 12 6 | *------------------------------------*

(2=6) r3c4 - (6=8) r3c1 - r6c1 = (8) r6c4 => - 2 r6c4; stte

by **Cenoman** » Wed Apr 22, 2026 1:40 pm

Code: Select all: +-------------------+-------------------+------------------+ | 1 459* 2 | 456* 78 a4-9 | 3 68 79 | | 456 b459* 3 | 456* 78 1 | 79 68 2 | | 68 c89 7 | 26 3 d29 | 4 5 1 | +-------------------+-------------------+------------------+ | 348 248 1 | 2348 6 7 | 29 239 5 | | 345 245 6 | 234 9 24 | 1 7 8 | | 38 7 9 | 238 1 5 | 6 23 4 | +-------------------+-------------------+------------------+ | 7 1 8 | 9 2 6 | 5 4 3 | | 2 6 5 | 17 4 3 | 8 19 79 | | 9 3 4 | 17 5 8 | 27 12 6 | +-------------------+-------------------+------------------+

UR(45)r12c24 using mixed external-internal
(4)r1c6 == (9)r2c2 - r3c2 = (9)r3c6 => -9 r1c6; ste

by **SteveG48** » Wed Apr 22, 2026 8:06 pm

Code: Select all: *-------------------------------------------------------------* | 1 459 2 | 456 78 49 | 3 68 79 | | 456 459 3 | 456 78 1 | 79 68 2 | |cd68 89 7 |cd26 3 29 | 4 5 1 | *--------------------+--------------------+-------------------| | 348 248 1 | 2348 6 7 | 29 239 5 | | 345 245 6 | 234 9 24 | 1 7 8 | | b38 7 9 | b238 1 5 | 6 ab2-3 4 | *--------------------+--------------------+-------------------| | 7 1 8 | 9 2 6 | 5 4 3 | | 2 6 5 | 17 4 3 | 8 19 79 | | 9 3 4 | 17 5 8 | 27 12 6 | *-------------------------------------------------------------*

2r6c8 = (8,2,3)r6c148 - (8|2)r3c14 = 6r3c1&6r3c4 => -3 r6c8 ; ste

minlex #3