The New Sudoku Players' Forum

by **Leren** » Sun Oct 31, 2021 9:04 am

Code: Select all: *-----------* |...|.8.|219| |6..|3..|...| |94.|...|3..| |---+---+---| |..9|82.|...| |.7.|...|16.| |5..|...|...| |---+---+---| |...|263|8..| |8.4|.9.|...| |3..|...|.5.| *-----------* ....8.2196..3.....94....3....982.....7....16.5...........2638..8.4.9....3......5.

by **RSW** » Sun Oct 31, 2021 10:03 am

Code: Select all: +-------------+----------------+----------------+ | 7 35 35 | 46 8 46 | 2 1 9 | | 6 128 128 | 3 17 9 | 457 478 4578 | | 9 4 18 | 157 157 2 | 3 78 6 | +-------------+----------------+----------------+ | 4 16 9 | 8 2 16 | 57 37 357 | | 2 7 38 | 9 345 45 | 1 6 *8-4 | | 5 1368 1368 | 1467 1347 1467 |b49 2489 *28-4 | +-------------+----------------+----------------+ | 1 59 57 | 2 6 3 | 8 479 a47 | | 8 26 4 | 157 9 157 |a67 23 123 | | 3 269 267 | 147 147 8 |a679 5 12 | +-------------+----------------+----------------+

(4=679)b9p347 - (9=4)r6c7 => -4r56c9; stte

by **P.O.** » Sun Oct 31, 2021 10:42 am

Code: Select all: after singles and intersections: 7 35 35 456 8 456 2 1 9 6 128 128 3 17 9 457 478 4578 9 4 158 157 157 2 3 78 6 4 136 9 8 2 1567 57 37 357 2 7 38 9 345 45 1 6 3458 5 1368 1368 1467 1347 1467 d47+9 a±23478×9 23478 1 59 57 2 6 3 8 479 47 8 b2+6 4 157 9 157 c-67 a+237 1237 3 269 267 147 147 8 c+679 5 127

c8n2{r6 r8} - r8c2{n2 n6} - c7n6{r8 r9} - c7n9{r9 r6} => r6c8 <> 9
ste.

by **jco** » Sun Oct 31, 2021 2:43 pm

After basics

Code: Select all: .----------------------------------------------------. | 7 35 35 | 46 8 46 | 2 1 9 | | 6 128 128 | 3 17 9 |c457 d478 4578 | | 9 4 18 | 157 157 2 | 3 d78 6 | |---------------+------------------+-----------------| | 4 16 9 | 8 2 16 | 57 d37 357 | | 2 7 38 | 9 345 45 | 1 6 48 | | 5 1368 1368 | 1467 1347 1467 |b49 a49-28 248 | |---------------+------------------+-----------------| | 1 59 57 | 2 6 3 | 8 479 47 | | 8 26 4 | 157 9 157 | 67 d23 123 | | 3 269 267 | 147 147 8 | 679 5 12 | '----------------------------------------------------'

(9)r6c8 = (9-4)r6c7 = (4)r2c7 - (4=8732)r2348c8 => -28 r6c8; ste

by **Cenoman** » Sun Oct 31, 2021 4:01 pm

Code: Select all: +---------------------+-----------------------+-----------------------+ | 7 35 35 | 46 8 46 | 2 1 9 | | 6 128 128 | 3 17 9 |Aa457* zb478 4578 | | 9 4 18 | 157 157 2 | 3 zb78 6 | +---------------------+-----------------------+-----------------------+ | 4 16 9 | 8 2 16 | B57 3-7 357 | | 2 7 38 | 9 345 45 | 1 6 48 | | 5 1368 1368 | 1467 1347 1467 | 49 2489 248 | +---------------------+-----------------------+-----------------------+ | 1 59 57 | 2 6 3 | 8 z479 47 | | 8 26 4 | 157 9 157 | 67* 23 123 | | 3 269 267 | 147 147 8 | y679* 5 12 | +---------------------+-----------------------+-----------------------+

Kraken AALS (45679)r289c7
(4)r2c7 - (4=87)r23c8
(5)r2c7 - (5=7)r4c7
(9)r9c7 - (9=487)r237c8
=> -7 r4c8; ste

by **jovi_al01** » Sun Oct 31, 2021 9:44 pm

the first solution i found was RSW's! after looking for another one, i found something in the same area.
after basics:

Code: Select all: .---------------.------------------.-----------------. | 7 35 35 | 46 8 46 | 2 1 9 | | 6 128 128 | 3 17 9 | 457 478 457-8| | 9 4 18 | 157 157 2 | 3 78 6 | :---------------+------------------+-----------------: | 4 16 9 | 8 2 16 | 57 37 357 | | 2 7 3-8 | 9 345 45 | 1 6 ba48 | | 5 1368 1368 | 1467 1347 1467 |b49 249-8 2-48 | :---------------+------------------+-----------------: | 1 59 57 | 2 6 3 | 8 479 a47 | | 8 26 4 | 157 9 157 |c67 23 123 | | 3 269 267 | 147 147 8 |c679 5 12 | '---------------'------------------'-----------------'

Almost Locked Set XY-Wing:
A=r57c9{478}, B=r5c9,r6c7{489}, C=r89c7{679}, X,Y=7, 9, Z=48 => r6c9<>4 r6c89,r2c9,r5c3<>8

stte

by **SteveG48** » Mon Nov 01, 2021 2:13 pm

Code: Select all: *-----------------------------------------------------------* | 7 35 35 | 46 8 46 | 2 1 9 | | 6 128 128 | 3 17 9 | 457 478 4578 | | 9 4 18 | 157 157 2 | 3 78 6 | *-------------------+-------------------+-------------------| | 4 16 9 | 8 2 16 | 57 37 357 | | 2 7 38 | 9 345 45 | 1 6 48 | | 5 1368 1368 | 1467 1347 1467 |d49 d2489 248 | *-------------------+-------------------+-------------------| | 1 59 57 | 2 6 3 | 8 479 47 | | 8 b26 4 | 157 9 157 |b67 c23 123 | | 3 269 267 | 147 147 8 |a67-9 5 12 | *-----------------------------------------------------------*

6r9c7 = (62)r8c27 - 2r8c8 = (29)r6c78 => -9 r9c7 ; stte

by **Ngisa** » Mon Nov 01, 2021 6:21 pm

Code: Select all: +-------------------+----------------------+-------------------+ | 7 35 35 | 46 8 46 | 2 1 9 | | 6 128 128 | 3 17 9 |a457 478 4578 | | 9 4 18 | 157 157 2 | 3 78 6 | +-------------------+----------------------+-------------------+ | 4 16 9 | 8 2 16 |a57 37 357 | | 2 7 38 | 9 345 45 | 1 6 48 | | 5 1368 1368 | 1467 1347 1467 |e9-4 d2489 248 | +-------------------+----------------------+-------------------+ | 1 59 57 | 2 6 3 | 8 479 47 | | 8 b26 4 | 157 9 157 | a67 c237 1237 | | 3 269 267 | 147 147 8 | 679 5 127 | +-------------------+----------------------+-------------------+

(4=5|76)r248c7 - (6=2)r8c2 - r8c8 = (2-9)r6c8 = (9)r6c7 => - 4r6c7; stte

Clement

Leren's Puzzles 74