The New Sudoku Players' Forum

by **SteveG48** » Wed Aug 25, 2021 5:30 pm

Code: Select all: *-----------* |.9.|..6|8.2| |...|...|.49| |...|31.|.6.| |---+---+---| |...|.4.|...| |62.|...|.74| |...|.2.|...| |---+---+---| |.8.|.93|...| |73.|1.8|...| |9..|7..|.2.| *-----------*

by **P.O.** » Wed Aug 25, 2021 5:58 pm

Code: Select all: after singles: 15 9 15 4 7 6 8 3 2 3 67 67 5 8 2 1 4 9 2 4 8 3 1 9 57 6 c+5-7 158 157 13579 69 4 157 2 158 1356 6 2 159 8 3 15 59 7 4 1458 157 134579 69 2 157 569 158 1356 145 8 1456 2 9 3 a5×6-7 15 b156+7 7 3 2 1 56 8 4 9 d-5+6 9 156 156 7 56 4 3 2 8 depth: 2 candidate: 6 from start ((7 0) (7 7 9) (5 6 7)) ((7 0) (7 9 9) (1 5 6 7)) ((5 1 9) (3 9 3) (5 7)) ((6 2 9) (8 9 9) (5 6)) ste.

by **marek stefanik** » Wed Aug 25, 2021 6:28 pm

Code: Select all: +------------------------+------------------------+------------------------+ | 15 9 15 | 4 7 6 | 8 3 2 | | 3 67 67 | 5 8 2 | 1 4 9 | | 2 4 8 | 3 1 9 |b57 6 c57 | +------------------------+------------------------+------------------------+ | 158 157 13579 | 69 4 157 | 2 158 135–6 | | 6 2 159 | 8 3 15 |a59 7 4 | | 1458 157 134579 | 69 2 157 |a569 158 135–6 | +------------------------+------------------------+------------------------+ | 145 8 1456 | 2 9 3 | 57–6 15 1567 | | 7 3 2 | 1 56 8 | 4 9 d56 | | 9 156 156 | 7 56 4 | 3 2 8 | +------------------------+------------------------+------------------------+

(6=59)r56c7 – 5r3c7 = 5r3c9 – (5=6)r8c9 => –6r46c9, –6r7c7, stte

Marek

by **jco** » Wed Aug 25, 2021 7:00 pm

Code: Select all: .-----------------------------------------------------. | 15 9 15 | 4 7 6 | 8 3 2 | | 3 67 67 | 5 8 2 | 1 4 9 | | 2 4 8 | 3 1 9 | 57 6 57 | |--------------------+-------------+------------------| | 158 157 b39 | 69 4 157 | 2 158 c36 | | 6 2 159 | 8 3 15 | 59 7 4 | | 1458 157 b134579 | 69 2 157 | 569 158 1356 | |--------------------+-------------+------------------| | 45 8 b456 | 2 9 3 | a567 15 a1567 | | 7 3 2 | 1 56 8 | 4 9 5-6 | | 9 156 156 | 7 56 4 | 3 2 8 | '-----------------------------------------------------'

(6)r7c79 = (643)r467c3 - (3=6)r4c9 => -6 r8c9; ste

by **eleven** » Wed Aug 25, 2021 7:13 pm

Nice one.

Code: Select all: *-----------------------------------------------------------------* | 15 9 15 | 4 7 6 | 8 3 2 | | 3 67 67 | 5 8 2 | 1 4 9 | | 2 4 8 | 3 1 9 | 57 6 a57 | |------------------------+------------------+---------------------| | 158 157 39 | 69 4 157 | 2 158 3-6 | | 6 2 159 | 8 3 15 | 59 7 4 | | 1458 157 134579 | 69 2 157 | 569 158 135-6 | |------------------------+------------------+---------------------| | 45 8 456 | 2 9 3 | 57-6 b15 b1567 | | 7 3 2 | 1 56 8 | 4 9 ba56 | | 9 156 156 | 7 56 4 | 3 2 8 | *-----------------------------------------------------------------*

(6=57)r83c9 - (7=156)b9p236 => -6r46c9, r7c7; stte
(same eliminations as Marek, found by looking at the UR57, which is not needed)

by **Leren** » Wed Aug 25, 2021 8:33 pm

Code: Select all: *----------------------------------------------* | 15 9 15 | 4 7 6 | 8 3 2 | | 3 67 67 | 5 8 2 | 1 4 9 | | 2 4 8 | 3 1 9 |c57 6 b57 | |-----------------+-----------+----------------| | 158 157 39 | 69 4 157 | 2 158 36 | | 6 2 159 | 8 3 15 | 59 7 4 | | 1458 157 134579 | 69 2 157 | 569 158 1356 | |-----------------+-----------+----------------| | 45 8 456 | 2 9 3 |d57-6 15 1567 | | 7 3 2 | 1 56 8 | 4 9 a56 | | 9 156 156 | 7 56 4 | 3 2 8 | *----------------------------------------------*

(6=5) r8c9 - r3c9 = (5-7) r3c7 = (7) r7c7 => - 6 r7c7; stte

Leren

by **rjamil** » Thu Aug 26, 2021 8:50 am

Code: Select all: +-------------------+-------------+----------------+ | 15 9 15 | 4 7 6 | 8 3 2 | | 3 67 67 | 5 8 2 | 1 4 9 | | 2 4 8 | 3 1 9 |(57) 6 (5)7 | +-------------------+-------------+----------------+ | 158 157 39 | 69 4 157 | 2 158 36 | | 6 2 159 | 8 3 15 | 9-5 7 4 | | 1458 157 134579 | 69 2 157 | 69-5 158 1356 | +-------------------+-------------+----------------+ | 45 8 456 | 2 9 3 |(567) 15 1567 | | 7 3 2 | 1 56 8 | 4 9 (56) | | 9 156 156 | 7 56 4 | 3 2 8 | +-------------------+-------------+----------------+

XYZ-Wing Hybrid: 567 @ r37c7 r8c9 Box wise Hybrid 5 @ r3c9 => -5 @ r56c7; stte

R. Jamil

by **Cenoman** » Thu Aug 26, 2021 4:27 pm

Code: Select all: +------------------------+------------------+---------------------+ | 15 9 15 | 4 7 6 | 8 3 2 | | 3 67 67 | 5 8 2 | 1 4 9 | | 2 4 8 | 3 1 9 | 57 6 57 | +------------------------+------------------+---------------------+ | 158 157 39* | 69* 4 157 | 2 c158 36* | | 6 2 159 | 8 3 15 | b59 7 4 | | 1458 157 134579* | 69* 2 157 | a69-5 c158 1356* | +------------------------+------------------+---------------------+ | 45 8 456 | 2 9 3 | 57-6 d15 1567 | | 7 3 2 | 1 56 8 | 4 9 e56 | | 9 156 156 | 7 56 4 | 3 2 8 | +------------------------+------------------+---------------------+

DP(369)r46c349 using externals
(6==9)r6c7 - (9=5)r5c7 - r46c8 = r7c8 - (5=6)r8c9 => -6 r7c7, -5r7c6; ste

Steve Stumble 8-25-2021