The New Sudoku Players' Forum

by **ArkieTech** » Mon Aug 19, 2013 12:19 am

Code: Select all: *-----------* |1.7|9..|..4| |..4|..2|8..| |83.|.4.|.5.| |---+---+---| |2..|..1|.9.| |..9|...|6..| |.1.|4..|..2| |---+---+---| |.5.|.7.|.38| |..3|5..|1..| |4..|..9|5.6| *-----------*

by **pjb** » Mon Aug 19, 2013 1:58 am

Code: Select all: 1 26 7 | 9 58 58 | 3 26 4 5 9 4 | 1367 13 2 | 8 67 17 8 3 26 | 167 4 67 | 29 5 179 ---------------------+----------------------+--------------------- 2 678 b568 | 67 c56 1 | 4 9 3 37 4 9 | 278 28 378 | 6 1 5 36 1 56 | 4 9 356 | 7 8 2 ---------------------+----------------------+--------------------- 69 5 126 | 126 7 4 | 29 3 8 679 267-8 3 | 5 d268 e68 | 1 4 79 4 278 a128 | 123-8 13 9 | 5 27 6

(8)r9c3 = (8-5)r4c3 = (5-6)r4c5 = r8c5 - (6=8)r8c6 => -8 r8c2, r9c4; stte

Phil

by **Leren** » Mon Aug 19, 2013 4:44 am

Code: Select all: *-----------------------------------------------------* | 1 26 7 | 9 f58 58 | 3 26 4 | | 5 9 4 | 1367 13 2 | 8 67 17 | | 8 3 26 | 167 4 67 | 29 5 179 | |-----------------+-----------------+-----------------| | 2 678 d568 | 67 e56 1 | 4 9 3 | | 37 4 9 |a278 2-8 378 | 6 1 5 | | 36 1 56 | 4 9 356 | 7 8 2 | |-----------------+-----------------+-----------------| | 69 5 126 | 126 7 4 | 29 3 8 | | 679 2678 3 | 5 268 68 | 1 4 79 | | 4 278 c128 |b1238 13 9 | 5 27 6 | *-----------------------------------------------------*

(8) r5c4 = r9c4 - r9c3 = (8-5) r4c3 = r4c5 - (5=8) r1c5 => - 8 r5c5; stte

Leren

by **ArkieTech** » Mon Aug 19, 2013 12:25 pm

Code: Select all: *-----------------------------------------------------------* | 1 26 7 | 9 b58 58 | 3 26 4 | | 5 9 4 | 1367 13 2 | 8 67 17 | | 8 3 26 | 167 4 67 | 29 5 179 | |-------------------+-------------------+-------------------| | 2 c678 568 |c67 b56 1 | 4 9 3 | | 37 4 9 | 278 b28 378 | 6 1 5 | | 36 1 56 | 4 9 356 | 7 8 2 | |-------------------+-------------------+-------------------| | 69 5 126 | 126 7 4 | 29 3 8 | | 679 267-8 3 | 5 a268 a68 | 1 4 79 | | 4 278 128 | 1238 13 9 | 5 27 6 | *-----------------------------------------------------------* (86=2)r8c56-(2=6)r145c5-(6=8)r4c24 => -8r8c2; lclste

by **tlanglet** » Mon Aug 19, 2013 1:29 pm

It's a FIRST! Someone else ( in this case, Dan) posted an ANS() whereas I used identical logic but started from a different strong inference.

Code: Select all: *-----------------------------------------------------------* | 1 26 7 | 9 a58 58 | 3 26 4 | | 5 9 4 | 1367 13 2 | 8 67 17 | | 8 3 26 | 167 4 67 | 29 5 179 | |-------------------+-------------------+-------------------| | 2 b678 568 |b67 a56 1 | 4 9 3 | | 37 4 9 | 278 a28 378 | 6 1 5 | | 36 1 56 | 4 9 356 | 7 8 2 | |-------------------+-------------------+-------------------| | 69 5 126 | 126 7 4 | 29 3 8 | | 679 *2678 3 | 5 *268 68 | 1 4 79 | | 4 278 128 | 1238 13 9 | 5 27 6 | *-----------------------------------------------------------*

2r8c2=2r8c5-(2=856)r514c5-(6=78)r4c42 => r8c2<>8

Ted

by **Marty R.** » Tue Aug 20, 2013 1:41 am

Code: Select all: *-----------------------------------------------------* | 1 26 7 | 9 58 58 | 3 26 4 | | 5 9 4 | 1367 13 2 | 8 67 17 | | 8 3 26 | 167 4 67 | 29 5 179 | |-----------------+-----------------+-----------------| | 2 678 568 | 67 56 1 | 4 9 3 | | 37 4 9 | 278 28 378 | 6 1 5 | | 36 1 56 | 4 9 356 | 7 8 2 | |-----------------+-----------------+-----------------| | 69 5 126 | 126 7 4 | 29 3 8 | | 679 2678 3 | 5 268 68 | 1 4 79 | | 4 278 128 | 1238 13 9 | 5 27 6 | *-----------------------------------------------------*

Couldn't find the one-stepper. A loop starting in r8c6 and ending in r8c5 took out a few 6s and 8s, setting up an M-Wing on 26 in r1c2 and r8c5.

Collection August 19, 2013