The New Sudoku Players' Forum

by **mith** » Sun Aug 30, 2020 5:47 pm

Code: Select all: +-------+-------+-------+ | . . . | 3 . . | 1 . . | | . . . | 4 1 . | 5 . . | | . . 9 | . . 2 | . 6 . | +-------+-------+-------+ | . 5 . | . . . | . . . | | . 3 . | . 5 . | . 8 . | | . . . | . . . | . 9 . | +-------+-------+-------+ | . 7 . | 9 . . | 3 . . | | . . 2 | . 3 8 | . . . | | . . 4 | . . 6 | . . . | +-------+-------+-------+ ...3..1.....41.5....9..2.6..5........3..5..8........9..7.9..3....2.38.....4..6...

(21 digits appears to be the minimum for a symmetric pi puzzle with a unique solution, without other constraints.)

by **Cenoman** » Sun Aug 30, 2020 9:03 pm

Code: Select all: +--------------------------+----------------------+---------------------+ | 24578 248 578 | 3 6 579 | 1 27-4 89 | | 2678 268 3 | 4 1 79 | 5 27 89 | | 1457 14 9 | c578 c78 2 | c47 6 3 | +--------------------------+----------------------+---------------------+ | 124678 5 1678 | 12678 9 147 | 2467 3 147 | | 9 3 167 | 1267 5 147 | 2467 8 147 | | 124678 12468 1678 | 12678 478 3 | 2467 9 5 | +--------------------------+----------------------+---------------------+ | 1568 7 1568 | 9 24 145 | 3 15 26 | | 156 16 2 | b157 3 8 | 9 a47 467 | | 3 9 4 | b15 27 6 | 8 15 27 | +--------------------------+----------------------+---------------------+

(4=7)r8c8 - (7=15)r89c4 - (5=784)r3c457 => -4 r1c8; ste

by **pjb** » Sun Aug 30, 2020 10:58 pm

Code: Select all: 24578 248 578 | 3 6 579 | 1 d247 89 2678 268 3 | 4 1 79 | 5 27 89 1457 f14 9 | 578 78 2 |e47 6 3 ------------------------+----------------------+--------------------- 124678 5 1678 | 12678 9 147 | 2467 3 147 9 3 167 | 1267 5 147 | 2467 8 147 124678 12468 1678 | 12678 478 3 | 2467 9 5 ------------------------+----------------------+--------------------- 158-6 7 158-6 | 9 24 145 | 3 15 a26 156 g16 2 | 157 3 8 | 9 c47 47-6 3 9 4 | 15 27 6 | 8 15 b27

(6=2)r7c9 - (2=7)r9c9 - (7=4)r8c8 - (4)r1c8 = (4)r3c7 - (4=1)r3c2 - (1=6)r8c2 => -6 r7c13, r8c9; stte

Phil

by **Leren** » Mon Aug 31, 2020 4:34 am

Code: Select all: *----------------------------------------------------* | 24578 248 578 | 3 6 579 | 1 c247 89 | | 2678 268 3 | 4 1 79 | 5 c27 89 | | 1457 14 9 |b578 b78 2 |b47 6 3 | |-------------------+----------------+---------------| | 124678 5 1678 | 12678 9 147 | 2467 3 147 | | 9 3 167 | 1267 5 147 | 2467 8 147 | | 124678 12468 1678 | 12678 478 3 | 2467 9 5 | |-------------------+----------------+---------------| | 1568 7 1568 | 9 24 145 | 3 15 26 | | 156 16 2 |a157 3 8 | 9 4-7 467 | | 3 9 4 |a15 27 6 | 8 15 27 | *----------------------------------------------------*

(7=5) r89c4 - (5=4) r3c457 - (4=7) r12c8 > - 7 r8c8; stte

Leren

Less Pi