The New Sudoku Players' Forum

by **ArkieTech** » Sun Jun 23, 2013 12:50 am

Code: Select all: *-----------* |7.3|..9|...| |.4.|...|...| |...|.5.|62.| |---+---+---| |.8.|...|2.4| |6..|.1.|..3| |3.9|...|.5.| |---+---+---| |.15|.9.|...| |...|...|.8.| |...|2..|7.1| *-----------*

by **pjb** » Sun Jun 23, 2013 3:04 am

Code: Select all: 7 56 3 | 168 2 9 | 458 14 58 d25 4 c26 | 1678 678 1678 | 3589 139 589 8-1 9 a18 | 34 5 34 | 6 2 7 ---------------------+----------------------+--------------------- e15 8 7-1 | 35679 367 367 | 2 679 4 6 257 4 | 5789 1 278 | 89 79 3 3 27 9 | 4678 4678 24678 | 1 5 68 ---------------------+----------------------+--------------------- 248 1 5 | 34678 9 34678 | 34 346 26 249 367 267 | 1346 346 1346 | 3459 8 2569 489 36 b68 | 2 3468 5 | 7 3469 1

XY chain: (1=8) r3c3 - (8=6) r9c3 - (6=2) r2c3 - (2=5) r2c1 - (5=1) r4c1 => -1r3c1, r4c3; stte
Phil

by **Leren** » Sun Jun 23, 2013 10:07 am

Code: Select all: *--------------------------------------------------------------* | 7 56 3 | 168 2 9 | 458 14 58 | | 25 4 a26 | 1678 678 1678 | 3589 139 589 | | 18 9 18 | 34 5 34 | 6 2 7 | |--------------------+--------------------+--------------------| | 15 8 17 | 59 367 367 | 2 679 4 | | 6 257 4 | 59 1 278 | 89 79 3 | | 3 27 9 | 4678 4678 24678 | 1 5 68 | |--------------------+--------------------+--------------------| | 248 1 5 | 34678 9 34678 | 34 346 26 | | 249 c367 b267 | 1346 346 1346 | 3459 8 2569 | | 489 d36 8-6 | 2 3468 5 | 7 3469 1 | *--------------------------------------------------------------*

WXY-Z Wing (237-6) or ALS XZ Rule X = 2, Z = 6 : (6=2) r2c3 - (2=367) r8c23,r9c2 => - 6 r9c3; stte

Leren

by **ArkieTech** » Sun Jun 23, 2013 11:46 am

Code: Select all: *--------------------------------------------------------------------* | 7 56 3 | 168 2 9 | 458 14 58 | | 5-2 4 a26 | 1678 678 1678 | 3589 139 589 | | 18 9 18 | 34 5 34 | 6 2 7 | |----------------------+----------------------+----------------------| | 15 8 17 | 59 367 367 | 2 679 4 | | 6 257 4 | 59 1 278 | 89 79 3 | | 3 27 9 | 4678 4678 24678 | 1 5 68 | |----------------------+----------------------+----------------------| |b248 1 5 | 34678 9 34678 | 34 346 26 | |b249 367 67-2 | 1346 346 1346 | 3459 8 2569 | |b489 36 b68 | 2 3468 5 | 7 3469 1 | *--------------------------------------------------------------------* (2=6)r2c3-(6=4892)r9c3,r789c1 => -2r2c1,r8c3; ste

by **tlanglet** » Sun Jun 23, 2013 2:18 pm

Code: Select all: *--------------------------------------------------------------------* | 7 d56 3 | 168 2 9 | 458 14 c58 | |f2=5 4 26 | 1678 678 1678 |*3589 139 *589 | | 18 9 18 | 34 5 34 | 6 2 7 | |----------------------+----------------------+----------------------| | 15 8 17 | 59 367 367 | 2 679 4 | | 6 257 4 | 59 1 278 |a89 79 3 | | 3 27 9 | 4678 4678 24678 | 1 5 b68 | |----------------------+----------------------+----------------------| | 248 1 5 | 34678 9 34678 | 34 346 26 | | 249 367 267 | 1346 346 1346 |*3459 8 *2569 | | 489 36 68 | 2 3468 5 | 7 3469 1 | *--------------------------------------------------------------------*

AUR(59)r28c79 external SIS: r2c1=5 & r5c7=9
AUR(59)r28c79[5r2c1=(9-8)r5c7]=8r6c9-(8=5)r1c9-r1c2=5r2c1 => r2c1=5

Ted

by **Marty R.** » Sun Jun 23, 2013 7:49 pm

Code: Select all: +-------------+------------------+----------------+ | 7 56 3 | 168 2 9 | 458 14 58 | | 25 4 26 | 1678 678 1678 | 3589 139 589 | | 18 9 18 | 34 5 34 | 6 2 7 | +-------------+------------------+----------------+ | 15 8 17 | 35679 367 367 | 2 679 4 | | 6 257 4 | 5789 1 278 | 89 79 3 | | 3 27 9 | 4678 4678 24678 | 1 5 68 | +-------------+------------------+----------------+ | 248 1 5 | 34678 9 34678 | 34 346 26 | | 249 367 267 | 1346 346 1346 | 3459 8 2569 | | 489 36 68 | 2 3468 5 | 7 3469 1 | +-------------+------------------+----------------+

Play this puzzle online at the Daily Sudoku site

Almost an XY-Chain save for one trivalue cell. :lol:

(7=1)r4c3-(1=8)r3c3-(8=6)r9c3-(63=7)r98c2=>r56c2,r8c3<>7

AU Tough June 23, 2013