The New Sudoku Players' Forum

by **m_b_metcalf** » Sat Jun 18, 2022 6:05 am

Code: Select all: . . . . . . . . . . . 5 8 . 9 3 . . . 9 8 2 . 6 5 4 . . 7 4 . . . 2 5 . . . . . . . . . . . 5 1 . . . 9 8 . . 4 9 3 . 5 6 1 . . . 6 1 . 8 4 . . . . . . . . . . . m_b_metcalf ...........58.93...982.654..74...25...........51...98..493.561...61.84...........

by **Leren** » Sat Jun 18, 2022 8:46 am

Jellyfish of 7's + Naked Pair + BUG+1: stte Leren

by **pjb** » Sat Jun 18, 2022 10:24 am

Code: Select all: 123467 1236 237 | 457 13457 1347 | 178 2679 126789 12467 126 5 | 8 147 9 | 3 267 1267 137 9 8 | 2 137 6 | 5 4 17 ------------------------+----------------------+--------------------- 3689 7 4 | 69 13689 13 | 2 5 136 23689 2368 23 | 45679 12345678912347 | 17 367 13467 236 5 1 | 467 23467 2347 | 9 8 3467 ------------------------+----------------------+--------------------- 278 4 9 | 3 27 5 | 6 1 278 2357 23 6 | 1 279 8 | 4 2379 23579 123578 1238 237 | 4679 24679 247 | 78 2379 235789

(7)r1c3 = r123c1 - r789c1 = r9c3 - r9c456 = r78c5 - r123c5 = r1c46 - r1c3: loop => -7 r56c5, -7 r1c78, -7 r9c78 , -7 r19c9

(121 placements) =>

Code: Select all: 4 6 2 | 57 35 37 | 1 9 8 7 1 5 | 8 4 9 | 3 2 6 3 9 8 | 2 1 6 | 5 4 7 ------------------------+----------------------+--------------------- 69 7 4 | 69 8 13 | 2 5 13 29 8 3 | 45 59 12 | 7 6 14 26 5 1 | 47 36 237 | 9 8 34 ------------------------+----------------------+--------------------- 8 4 9 | 3 7 5 | 6 1 2 5 3 6 | 1 2 8 | 4 7 9 1 2 7 | 69 69 4 | 8 3 5

(3=7)r1c6 - (7=3)r6c156 => -3 r4c6; stte

Phil

by **Cenoman** » Sat Jun 18, 2022 2:50 pm

Another loop using empty rectangles b2, b8:

Code: Select all: +------------------------+------------------------------+------------------------+ | 12346-7 1236 f237 | a457 a1345-7 a1347 | 18-7 269-7 12689-7 | | 12467 126 5 | 8 b147 9 | 3 267 1267 | | 137 9 8 | 2 b137 6 | 5 4 17 | +------------------------+------------------------------+------------------------+ | 3689 7 4 | 69 13689 13 | 2 5 136 | | 23689 2368 23 | 45679 12345689-7 12347 | 17 367 13467 | | 236 5 1 | 467 2346-7 2347 | 9 8 3467 | +------------------------+------------------------------+------------------------+ | 278 4 9 | 3 c27 5 | 6 1 278 | | 2357 23 6 | 1 c279 8 | 4 2379 23579 | | 12358-7 1238 e237 | d4679 d2469-7 d247 | 8-7 239-7 23589-7 | +------------------------+------------------------------+------------------------+

1. (7)r1c456 = r23c5 - r78c5 = r9c456 - r9c3 = r1c3 loop => -7 r19c15789, -7 r56c5; 34 singles & lcls

Code: Select all: +-----------------+------------------+-----------------+ | 4 6 2 | 57 35 37 | 1 9 8 | | 7 1 5 | 8 4 9 | 3 2 6 | | 3 9 8 | 2 1 6 | 5 4 7 | +-----------------+------------------+-----------------+ | 69 7 4 | 69 8 13 | 2 5 13 | | 29 8 3 | 45 59 12 | 7 6 14 | | 26 5 1 | 47 36 27+3 | 9 8 34 | +-----------------+------------------+-----------------+ | 8 4 9 | 3 7 5 | 6 1 2 | | 5 3 6 | 1 2 8 | 4 7 9 | | 1 2 7 | 69 69 4 | 8 3 5 | +-----------------+------------------+-----------------+

2. BUG+1 => +3 r6c6; ste

Rarity #8