The New Sudoku Players' Forum

by **Leren** » Wed May 26, 2021 8:54 am

Code: Select all: *-----------* |..2|.7.|.15| |...|..5|7..| |3..|.9.|.6.| |---+---+---| |.4.|5..|...| |9..|..6|5..| |...|...|.41| |---+---+---| |..6|.13|9..| |5..|9.7|...| |.1.|..4|.2.| *-----------* ..2.7..15.....57..3...9..6..4.5.....9....65.........41..6.139..5..9.7....1...4.2.

by **Cenoman** » Wed May 26, 2021 12:31 pm

Code: Select all: +----------------------------+----------------------+-----------------------+ | z46 9 2 | 346 7 8 | 34 1 5 | | 1468 z68 148 | 2346 2346 5 | 7 39 239 | | 3 57 57 | 124 9 12 | 248 6 28 | +----------------------------+----------------------+-----------------------+ | 12678 4 1378 | 5 238 12 | 2368 379 23689 | | 9 2378 1378 | 12347 2348 6 | 5 37 238 | | 2678 235678 3578 | 237 238 9 | 2368 4 1 | +----------------------------+----------------------+-----------------------+ | 278-4 yAa278 6 | 28 1 3 | 9 5 B47 | | 5 b23 b34 | 9 26 7 | 1 8 46 | | 78 1 9 | 68 5 4 | 36 2 367 | +----------------------------+----------------------+-----------------------+

Death Blossom, stem r7c2
(2)r7c2 - (2=34)r8c23
(7)r7c2 - (7=4)r7c9
(8)r7c2 - (8=64)b1p15
=> -4 r7c1; ste

by **SteveG48** » Wed May 26, 2021 5:03 pm

Code: Select all: *-------------------------------------------------------------------------------* | b46 9 2 | 346 7 8 | 34 1 5 | | 1468 c68 148 | 2346 2346 5 | 7 39 239 | | 3 57 57 | 124 9 12 | 248 6 28 | *--------------------------+--------------------------+-------------------------| | 12678 4 1378 | 5 238 12 | 2368 379 23689 | | 9 2378 1378 | 12347 2348 6 | 5 37 238 | | 2678 235678 3578 | 237 238 9 | 2368 4 1 | *--------------------------+--------------------------+-------------------------| |be2478 d278 6 | 28 1 3 | 9 5 ae4-7 | | 5 23 34 | 9 26 7 | 1 8 46 | | e78 1 9 | 68 5 4 | 36 2 e376 | *-------------------------------------------------------------------------------*

4r7c9 = (46)r17c1 - (6=8)r2c2 - 8r7c2 = (87)r9c19|(84)r7c19 => -7 r7c9 ; stte

by **jco** » Wed May 26, 2021 7:30 pm

Code: Select all: .----------------------------------------------------------. |e46 9 2 | 346 7 8 | 34 1 5 | | 1468 e68 d148 | 2346 2346 5 | 7 39 239 | | 3 57 57 | 124 9 12 | 248 6 28 | |---------------------+-----------------+------------------| | 12678 4 1378 | 5 238 12 | 2368 379 23689 | | 9 2378 1378 | 12347 2348 6 | 5 37 238 | | 2678 235678 3578 | 237 238 9 | 2368 4 1 | |---------------------+-----------------+------------------| |d2478 f(27)8* 6 |a(28) 1 3 | 9 5 47 | | 5 c23 c34 | 9 b26 7 | 1 8 46 | |(78) 1 9 | 6-8 5 4 | 36 2 367 | '----------------------------------------------------------'

(8=2)r7c4-(2)r8c5=(2-34)r8c23=(4)r2c3-(4=68)b1p15-(8)r7c2=[XY-Wing* 278 r9c9,r7c2,r7c4] => -8 r9c4; ste

by **eleven** » Thu May 27, 2021 10:40 pm

Code: Select all: *-------------------------------------------------------------------------* | a46 9 2 | 346 7 8 | 34 1 5 | | 1468 a68 148 | 2346 2346 5 | 7 39 239 | | 3 57 57 | 124 9 12 | 248 6 28 | |--------------------------+----------------------+-----------------------| | 12678 4 1378 | 5 238 12 | 2368 379 23689 | | 9 2378 1378 | 12347 2348 6 | 5 37 238 | | 2678 235678 3578 | 237 238 9 | 2368 4 1 | |--------------------------+----------------------+-----------------------| | b247-8 b*27-8 6 |b*28 1 3 | 9 5 47 | | 5 23 34 | 9 26 7 | 1 8 46 | |c*78 1 9 | 6-8 5 4 | 36 2 367 | *-------------------------------------------------------------------------*

xy-wing 27/28/78 r7c24,r9c1 = 8r7c2 - (8=64)b1p15 - (4=287)r7c124 - (7=8)r9c1 => -8r7c12, r9c4; stte

by **pjb** » Fri May 28, 2021 12:15 am

Code: Select all: g46 9 2 | 346 7 8 | 34 1 5 1468 h68 148 | 2346 2346 5 | 7 39 239 3 57 57 | 124 9 12 | 248 6 28 ------------------------+----------------------+--------------------- 12678 4 1378 | 5 238 12 | 2368 379 23689 9 2378 1378 | 12347 2348 6 | 5 37 238 2678 235678 3578 | 237 238 9 | 2368 4 1 ------------------------+----------------------+--------------------- f2478 i278 6 | 8-2 1 3 | 9 5 e47 5 3-2 34 | 9 a26 7 | 1 8 46 c78 1 9 |b68 5 4 | 36 2 d367

(2=6)r8c5 - (6=8)r9c4 - (8=7*)r9c1 - (7)r9c9 = (7-4)r7c9 = (4)r7c1 - (4=6)r1c1 - (6=8)r2c2 - (8|7*=2)r7c2 => -2 r7c4, r8c2; stte

Phil

Website · by **denis_berthier** » Sat May 29, 2021 4:23 am

.

Code: Select all: Resolution state after Singles and whips[1]: +----------------------+----------------------+----------------------+ ! 46 9 2 ! 346 7 8 ! 34 1 5 ! ! 1468 68 148 ! 12346 2346 5 ! 7 39 2389 ! ! 3 578 14578 ! 124 9 12 ! 248 6 28 ! +----------------------+----------------------+----------------------+ ! 12678 4 1378 ! 5 238 12 ! 2368 379 23689 ! ! 9 2378 1378 ! 12347 2348 6 ! 5 37 238 ! ! 2678 235678 3578 ! 237 238 9 ! 2368 4 1 ! +----------------------+----------------------+----------------------+ ! 2478 278 6 ! 28 1 3 ! 9 5 47 ! ! 5 23 34 ! 9 26 7 ! 1 8 46 ! ! 78 1 9 ! 68 5 4 ! 36 2 367 ! +----------------------+----------------------+----------------------+

z-chain[5]: r7c9{n4 n7} - r9n7{c9 c1} - b7n8{r9c1 r7c2} - r2c2{n8 n6} - r1c1{n6 .} ==> r7c1 ≠ 4
stte

Leren's Puzzles 22