The New Sudoku Players' Forum

by **eleven** » Fri Mar 24, 2017 6:40 am

Code: Select all: +-------+-------+-------+ | . . . | . 5 3 | 9 . . | | . . 5 | 4 . . | . . . | | . 1 4 | . . . | . . 7 | +-------+-------+-------+ | . 7 . | . . . | 1 3 . | | 9 . . | . . 6 | . . 4 | | . 3 . | . . . | 6 2 . | +-------+-------+-------+ | . 4 2 | . . . | . . 1 | | . . . | 3 8 . | . . . | | . . . | . 7 1 | . . . | +-------+-------+-------+

by **JC Van Hay** » Fri Mar 24, 2017 7:33 am

Code: Select all: +-------------+--------------+---------------+ | 268 68 7 | 1 5 3 | 9 4 268 | | 268 9 5 | 4 26 7 | 28 1 3 | | 3 1 4 | 69 269 8 | 25 56 7 | +-------------+--------------+---------------+ | 5 7 6 | 89 4 2 | 1 3 89 | | 9 2 1 | 58 3 6 | 578 57 4 | | 4 3 8 | 7 1 59 | 6 2 59 | +-------------+--------------+---------------+ | 7 4 2 | 569 69 59 | 3 8 1 | | 1 56 9 | 3 8 4 | 257 567 256 | | 68 568 3 | 2 7 1 | 4 9 56 | +-------------+--------------+---------------+

B5.R46 -> 1 unique solution

by **Cenoman** » Fri Mar 24, 2017 8:37 am

Code: Select all: +-------------------+-------------------+--------------------+ | 268 c68 7 | 1 5 3 | 9 4 f268 | | d268 9 5 | 4 26 7 | e28 1 3 | | 3 1 4 | 69 269 8 | 25 56 7 | +-------------------+-------------------+--------------------+ | 5 7 6 | 89 4 2 | 1 3 89 | | 9 2 1 | 58 3 6 | 578 57 4 | | 4 3 8 | 7 1 59 | 6 2 9-5 | +-------------------+-------------------+--------------------+ | 7 4 2 | 569 69 59 | 3 8 1 | | 1 56 9 | 3 8 4 | 257 567 f256 | | 68 b568 3 | 2 7 1 | 4 9 af56 | +-------------------+-------------------+--------------------+

(5)r8c9 = (5-8)r8c2 = r1c2 - r2c1 = r2c7 - (8=5)r189c9 => -5 r6c9; stte

Cenoman

by **Leren** » Fri Mar 24, 2017 9:49 am

Code: Select all: *-----------------------------------------------------* | 268 68 7 | 1 5 3 | 9 4 268 | |a268 9 5 | 4 b26 7 | 28 1 3 | | 3 1 4 |c69 269 8 | 25 56 7 | |-----------------+-----------------+-----------------| | 5 7 6 |d89 4 2 | 1 3 e89 | | 9 2 1 | 58 3 6 | 578 57 4 | | 4 3 8 | 7 1 59 | 6 2 f59 | |-----------------+-----------------+-----------------| | 7 4 2 | 569 69 59 | 3 8 1 | | 1 56 9 | 3 8 4 | 257 567 256 | | 8-6 568 3 | 2 7 1 | 4 9 g56 | *-----------------------------------------------------*

(6) r2c1 = r2c5 - (6=9) r3c4 - r4c4 = r4c9 - (9=5) r6c9 - (9=6) r9c9 => - 6 r9c1; stte

Leren

by **Ngisa** » Fri Mar 24, 2017 12:39 pm

Code: Select all: +-----------+------------+-------------+ | 268 a68 7 | 1 5 3 | 9 4 26-8 | | 268 9 5 | 4 26 7 | 28 1 3 | | 3 16 4 | 69 269 8 | 25 56 7 | +-----------+------------+-------------+ | 5 7 6 | 89 4 2 | 1 3 e89 | | 9 2 1 | 58 3 6 | 578 57 4 | | 4 3 8 | 7 1 59 | 6 2 e59 | +-----------+------------+-------------+ | 7 4 2 | 569 69 59 | 3 8 1 | | 1 b56 9 | 3 8 4 | c257 c567 c256 | | 68 568 3 | 2 7 1 | 4 9 d56 | +-----------+------------+-------------+

(8=6)r1c2 - (6=5)r8c2 - r8c789 = r9c9 - (5=8)r46c9 => - 8 r1c9; stte

Clement

by **eleven** » Fri Mar 24, 2017 9:53 pm

JC Van Hay wrote:B5.R46 -> 1 unique solution

6BW -> 0 solutions

by **StrmCkr** » Sat Mar 25, 2017 8:42 pm

Code: Select all: .-------------.--------------.---------------. | 268 68 7 | 1 5 3 | 9 4 268 | | 268 9 5 | 4 26 7 | 28 1 3 | | 3 1 4 | 69 269 8 | 25 56 7 | :-------------+--------------+---------------: | 5 7 6 | 89 4 2 | 1 3 89 | | 9 2 1 | 58 3 6 | 578 57 4 | | 4 3 8 | 7 1 59 | 6 2 59 | :-------------+--------------+---------------: | 7 4 2 | 569 69 59 | 3 8 1 | | 1 56 9 | 3 8 4 | 257 567 256 | | 68 568 3 | 2 7 1 | 4 9 56 | '-------------'--------------'---------------'

T- (WXYZ) wing
wxyz (5689) @ R9C19,R46C9
Z=8 @ r1c12,r2c1
=> r1c9 <> 8, stte;

Additive 7