The New Sudoku Players' Forum

by **ArkieTech** » Thu Apr 17, 2014 11:15 pm

Code: Select all: *-----------* |..1|.9.|6..| |.3.|6.4|.2.| |.8.|...|.1.| |---+---+---| |7..|3.8|..5| |...|...|...| |2..|9.1|..7| |---+---+---| |.9.|...|.7.| |.7.|5.9|.4.| |..2|.3.|9..| *-----------*

by **SteveG48** » Thu Apr 17, 2014 11:45 pm

Code: Select all: *-----------------------------------------------------------* |a45 2 1 | 8 9 7 | 6 3-5 34 | | 59 3 7 | 6 1 4 | 58 2 89 | | 469 8 469 | 2 5 3 | 7 1 49 | *-------------------+-------------------+-------------------| | 7 146 49 | 3 2 8 | 14 69 5 | | 1389 16 389 | 4 7 5 | 1238 69 1238 | | 2 45 3458 | 9 6 1 | 348 38 7 | *-------------------+-------------------+-------------------| | 368 9 3568 | 1 4 2 | 358 7 368 | | 136 7 36 | 5 8 9 | 123 4 1236 | |b148 145 2 | 7 3 6 | 9 c58 b18 | *-----------------------------------------------------------*

(5=4)r1c1 - (4=18)r9c19 - (8=5)r9c8 => -5 r1c8 ; stte

by **Leren** » Fri Apr 18, 2014 12:22 am

Code: Select all: *--------------------------------------------------------------* |e5-4 2 1 | 8 9 7 | 6 d35 34 | | 59 3 7 | 6 1 4 | 58 2 89 | | 469 8 469 | 2 5 3 | 7 1 49 | |--------------------+--------------------+--------------------| | 7 146 49 | 3 2 8 | 14 69 5 | | 1389 16 389 | 4 7 5 | 1238 69 1238 | | 2 45 3458 | 9 6 1 | 348 38 7 | |--------------------+--------------------+--------------------| | 368 9 3568 | 1 4 2 | 358 7 368 | | 136 7 36 | 5 8 9 | 123 4 1236 | |a148 b145 2 | 7 3 6 | 9 c58 18 | *--------------------------------------------------------------*

L2 Wing : (4) r9c1 = (4-5) r9c2 = r9c8 - r1c8 = (5) r1c1 => - 4 r1c1; stte

Leren

by **pjb** » Fri Apr 18, 2014 9:38 am

Code: Select all: a45 2 1 | 8 9 7 | 6 3-5 34 59 3 7 | 6 1 4 | 58 2 89 469 8 469 | 2 5 3 | 7 1 49 ---------------------+----------------------+--------------------- 7 146 49 | 3 2 8 | 14 69 5 1389 16 389 | 4 7 5 | 1238 69 1238 2 45 3458 | 9 6 1 | 348 38 7 ---------------------+----------------------+--------------------- 368 9 3568 | 1 4 2 | 358 7 368 136 7 36 | 5 8 9 | 123 4 1236 b148 c145 2 | 7 3 6 | 9 d58 18

Similar to Steve, but avoiding ALSs:
(5=4)r1c1 - r9c1 = (4-5)r9c2 = r9c8 => -5 r1c8

Phil

by **tlanglet** » Fri Apr 18, 2014 1:43 pm

Code: Select all: *-----------------------------------------------------------* |*45 2 1 | 8 9 7 | 6 3-5 34 | | 59 3 7 | 6 1 4 | 58 2 89 | | 469 8 469 | 2 5 3 | 7 1 49 | |-------------------+-------------------+-------------------| | 7 146 49 | 3 2 8 | 14 69 5 | | 1389 16 389 | 4 7 5 | 1238 69 1238 | | 2 45 3458 | 9 6 1 | 348 38 7 | |-------------------+-------------------+-------------------| | 368 9 3568 | 1 4 2 | 358 7 368 | | 136 7 36 | 5 8 9 | 123 4 1236 | |*48=1 145 2 | 7 3 6 | 9 *58 18 | *-----------------------------------------------------------*

AXY-wing(48-5)with pivot (48=1)r9c1 and pincers (45)r1c1 & (58)r9c8 => r1c8<>5
xy-wing(48-5) => r1c8<>5
||
1r9c1-(1=85)r9c98 => r1c8<>5

Ted

by **Marty R.** » Fri Apr 18, 2014 3:43 pm

Same elimination of 5 in r1c8 which, in addition to the other solutions, is a W-Wing (45) with transport.

by **daj95376** » Sat Apr 19, 2014 4:52 pm

_

What these puzzles need are .................... longer solutions!

Code: Select all: +--------------------------------------------------------------+ | g45 2 1 | 8 9 7 | 6 c35 h34 | | a59 3 7 | 6 1 4 | b58 2 8-9 | | 46-9 8 46-9 | 2 5 3 | 7 1 i49 | |--------------------+--------------------+--------------------| | 7 146 49 | 3 2 8 | 14 69 5 | | 1389 16 389 | 4 7 5 | 1238 69 1238 | | 2 45 3458 | 9 6 1 | 348 38 7 | |--------------------+--------------------+--------------------| | 368 9 3568 | 1 4 2 | 358 7 368 | | 136 7 36 | 5 8 9 | 123 4 1236 | | f148 e145 2 | 7 3 6 | 9 d58 18 | +--------------------------------------------------------------+ # 59 eliminations remain (9=5)r2c1 - r2c7 = r1c8 - r9c8 = (5-4)r9c2 = r9c1 - r1c1 = r1c9 - (4=9)r3c9 => -9 r2c9,r3c13

by **SteveG48** » Sat Apr 19, 2014 5:47 pm

daj95376 wrote:_

What these puzzles need are .................... longer solutions!

Well dang! If only I'd known! :lol:

April 18, 2014