The New Sudoku Players' Forum

by **SteveG48** » Fri Jul 21, 2023 1:24 pm

Code: Select all: *-----------* |.5.|1.7|9..| |...|...|.73| |...|.9.|..4| |---+---+---| |...|37.|2..| |.1.|4.8|.9.| |..7|.29|...| |---+---+---| |1..|.5.|...| |29.|...|.1.| |..8|6.2|.4.| *-----------*

by **jco** » Fri Jul 21, 2023 5:41 pm

After basics

Code: Select all: .--------------------------------------------------------------------. | 468 5 46 | 1 3 7 | 9 268 268 | | 689 268 169 | 28 4 56 | 1568 7 3 | | 3678 23678 136 | 28 9 56 | 1568 568 4 | |----------------------+----------------------+----------------------| | 45689 468 4569 | 3 7 1 | 2 568 568 | |a35 1 2 | 4 6 8 | 57-3 9 57 | | 368 368 7 | 5 2 9 | 4 368 1 | |----------------------+----------------------+----------------------| | 1 3467 346 | 9 5 34 | 3678 2368 2678 | | 2 9 3456 | 7 8 34 |d356 1 d56 | |b357 37 8 | 6 1 2 |c357 4 9 | '--------------------------------------------------------------------'

ALS W-wing (3=5)r5c1 - (5)r9c1 = (5)r9c7 - (5=63)r8c79 => -3 r5c7; lclste [NP & ste]

by **P.O.** » Fri Jul 21, 2023 6:01 pm

basics:

Hidden Text: Show

Code: Select all: 468 5 46 1 3 7 9 268 268 689 268 169 28 4 56 1568 7 3 3678 23678 136 28 9 56 1568 568 4 45689 468 4569 3 7 1 2 568 568 35 1 2 4 6 8 357 9 57 368 368 7 5 2 9 4 368 1 1 3467 346 9 5 34 3678 2368 2678 2 9 3456 7 8 34 356 1 56 357 37 8 6 1 2 357 4 9 9r2c3 => r2c4 <> 2,8 r2c3=9 - c1n9{r2 r4} - c1n4{r4 r1} - r1c3{n4 n6} - 28r2c12 => r2c3 <> 9 ste.

by **RSW** » Fri Jul 21, 2023 6:33 pm

Code: Select all: +------------------+----------+----------------+ | 468 5 46 | 1 3 7 | 9 268 268 | | 689 268 169 | 28 4 56 | 1568 7 3 | | 3678 23678 136 | 28 9 56 | 1568 568 4 | +------------------+----------+----------------+ | 45689 468 4569 | 3 7 1 | 2 568 568 | | 35 1 2 | 4 6 8 | 357 9 57 | | 368 368 7 | 5 2 9 | 4 368 1 | +------------------+----------+----------------+ | 1 3467 #46-3 | 9 5 #34 | 3678 2368 2678 | | 2 9 #3456 | 7 8 #34 | 356 1 56 | | 357 37 8 | 6 1 2 | 357 4 9 | +------------------+----------+----------------+

UR(34)r78c36 (Type 4): bilocal digit 4 (row 8) => -3r7c3; lclste

by **Cenoman** » Fri Jul 21, 2023 8:55 pm

RSW's UR with ste finish:

Code: Select all: +-------------------------+-----------------+-----------------------+ | d468 5 c46 | 1 3 7 | 9 268 268 | | 689 268 169 | 28 4 56 | 1568 7 3 | | 3678 23678 136 | 28 9 56 | 1568 568 4 | +-------------------------+-----------------+-----------------------+ | e45689 468 e469-5 | 3 7 1 | 2 568 568 | | 35 1 2 | 4 6 8 | 357 9 57 | | 368 368 7 | 5 2 9 | 4 368 1 | +-------------------------+-----------------+-----------------------+ | 1 3467 b346* | 9 5 34* | 3678 2368 2678 | | 2 9 ba3456* | 7 8 34* | 356 1 56 | | 357 37 8 | 6 1 2 | 357 4 9 | +-------------------------+-----------------+-----------------------+

UR(34)r78c36 using internals
(5)r8c3 == (6)r78c3 - (6=4)r1c3 - r1c1 = (49)r4c13 => -5 r4c3; ste

by **Leren** » Fri Jul 21, 2023 9:50 pm

Code: Select all: *-------------------------------------------------* | c468 5 b46 | 1 3 7 | 9 268 268 | |ca689 a268 16-9 |a28 4 56 | 1568 7 3 | | c3678 23678 136 | 28 9 56 | 1568 568 4 | |----------------------+---------+----------------| | 4568-9 468 4569 | 3 7 1 | 2 568 568 | | c35 1 2 | 4 6 8 | 357 9 57 | | c368 368 7 | 5 2 9 | 4 368 1 | |----------------------+---------+----------------| | 1 3467 346 | 9 5 34 | 3678 2368 2678 | | 2 9 3456 | 7 8 34 | 356 1 56 | | c357 37 8 | 6 1 2 | 357 4 9 | *-------------------------------------------------*

ALS XY Wing: (9=6) r2c124 - (6=4) r1c3 - (4=9) r123569c1 => - 9 r1c3, r4c1; stte

Leren

Steve Stumble 7-21-2023