The New Sudoku Players' Forum

by **tarek** » Sat Apr 11, 2020 1:40 pm

Code: Select all: +-------+-------+-------+ | . . . | . 2 5 | 3 . . | | . . . | . 4 . | 1 . . | | 1 . . | . . . | . 7 4 | +-------+-------+-------+ | 8 . . | . 1 . | . . 3 | | . . . | 3 . 9 | . 2 6 | | 3 . . | . 5 . | . . . | +-------+-------+-------+ | 2 7 5 | . . . | . . . | | . 9 1 | . . . | . . . | | . . 8 | 4 . 2 | 7 . . | +-------+-------+-------+ ....253......4.1..1......748...1...3...3.9.263...5....275.......91........84.27..

by **Ngisa** » Sat Apr 11, 2020 6:33 pm

Code: Select all: +---------------------+---------------------+---------------------+ | 7 468 46 | 1 2 5 | 3 689 89 | | 9 268 236 | 67 4 367 | 1 68 5 | | 1 5 36 | 9 368 368 | 2 7 4 | +---------------------+---------------------+---------------------+ | 8 246 c24679 | 267 1 467 | 5 49 3 | | 5 1 b47 | 3 78 9 |a48 2 6 | | 3 246 d2469 | 268 5 468 |e489 1 7 | +---------------------+---------------------+---------------------+ | 2 7 5 | 68 368 1 |f9-4 3489 89 | | 4 9 1 | 5 378 378 | 6 38 2 | | 6 3 8 | 4 9 2 | 7 5 1 | +---------------------+---------------------+---------------------+

(4)r5c7 = (4-7)r5c3 = (7-9)r4c3 = r6c3 - r6c7 = (9)r7c7 => - 4r7c7; stte

Clement

by **SteveG48** » Sat Apr 11, 2020 6:38 pm

Code: Select all: *--------------------------------------------------------------------* | 7 468 46 | 1 2 5 | 3 d689 9-8 | | 9 268 236 | 67 4 367 | 1 d68 5 | | 1 5 36 | 9 368 368 | 2 7 4 | *----------------------+----------------------+----------------------| | 8 c246 24679 |c267 1 c467 | 5 c49 3 | | 5 1 47 | 3 b78 9 |b48 2 6 | | 3 246 2469 | 268 5 468 | 489 1 7 | *----------------------+----------------------+----------------------| | 2 7 5 | 68 368 1 |a49 349-8 a89 | | 4 9 1 | 5 378 378 | 6 3-8 2 | | 6 3 8 | 4 9 2 | 7 5 1 | *--------------------------------------------------------------------*

(8=94)r7c79 - (4=87)r5c57 - (7=2469)r4c2468 - (9=68)r12c8 => -8 r1c9,r78c8 ; stte

by **Leren** » Sat Apr 11, 2020 9:44 pm

Code: Select all: *-------------------------------------------* | 7 468 46 | 1 2 5 | 3 689 89 | | 9 268 236 | 67 4 367 | 1 68 5 | | 1 5 36 | 9 368 368 | 2 7 4 | |-------------+-------------+---------------| | 8 246 24679 | 267 1 467 | 5 49 3 | | 5 1 47 | 3 7-8 9 |a48 2 6 | | 3 246 2469 |e268 5 468 | 49-8 1 7 | |-------------+-------------+---------------| | 2 7 5 |d68 368 1 |b49 3489 c89 | | 4 9 1 | 5 378 378 | 6 38 2 | | 6 3 8 | 4 9 2 | 7 5 1 | *-------------------------------------------*

XY Wing with transport : (8=4) r5c7 - (4=9) r7c7 - (9=8) r7c9 - r7c4 = (8) r6c4 => - 8 r5c5, r6c7; stte

Leren

by **pjb** » Sun Apr 12, 2020 2:19 am

Code: Select all: 7 468 46 | 1 2 5 | 3 689 89 9 268 236 | 67 4 367 | 1 68 5 1 5 36 | 9 368 368 | 2 7 4 ------------------------+----------------------+--------------------- 8 246 c24679 | 267 1 467 | 5 d9-4 3 5 1 b47 | 3 78 9 |a48 2 6 3 246 2469 | 268 5 468 | 489 1 7 ------------------------+----------------------+--------------------- 2 7 5 | 68 368 1 | 9-4 e3489 89 4 9 1 | 5 378 378 | 6 38 2 6 3 8 | 4 9 2 | 7 5 1

(4)r5c7 = (4-7)r5c3 = (7-9)r4c3 = (9-4)r4c8 = r7c8 => -4 r4c8, r7c7; stte

Phil

by **Sudtyro2** » Mon Apr 13, 2020 6:40 pm

Code: Select all: +-----------------+---------------+---------------+ | 7 468 46 | 1 2 5 | 3 689 89 | | 9 268 236 | 67 4 367 | 1 68 5 | | 1 5 36 | 9 368 368 | 2 7 4 | +-----------------+---------------+---------------+ | 8 246 a24679 | 267 1 467 | 5 49 3 | | 5 1 b47 | 3 78 9 | c48 2 6 | | 3 246 2469 | 268 5 468 | d48-9 1 7 | +-----------------+---------------+---------------+ | 2 7 5 | 68 368 1 | 49 3489 89 | | 4 9 1 | 5 378 378 | 6 38 2 | | 6 3 8 | 4 9 2 | 7 5 1 | +-----------------+---------------+---------------+

1-Fish (9)c3\r6 + rfr4c3
Remote fin:
(97-4)r45c3 = (4-8)r5c7 = 8r6c7 => -9 r6c7; stte.

SteveC

by **Cenoman** » Mon Apr 13, 2020 10:06 pm

pjb wrote:(4)r5c7 = (4-7)r5c3 = (7-9)r4c3 = (9-4)r4c8 = r7c8 => -4 r4c8, r7c7; stte

I like it.

@Phil
you could still shorten your chain to a L3-wing: (4)r5c7 = (4-7)r5c3 = (7-9)r4c3 = (9)r4c8 => -4 r4c8; stte

April 11, 2020