The New Sudoku Players' Forum

by **pjb** » Sun Jul 18, 2021 6:52 am

Code: Select all: *-----------* |.1.|...|..2| |3..|..4|...| |...|.5.|6..| |---+---+---| |...|2..|.4.| |..6|.7.|1..| |.8.|..3|...| |---+---+---| |..7|.1.|...| |...|6..|..3| |5..|...|.9.| *-----------* .1......23....4.......5.6.....2...4...6.7.1...8...3.....7.1.......6....35......9.

Phil

by **Leren** » Sun Jul 18, 2021 8:35 am

Code: Select all: *--------------------------------------------------------------* | 46789 1 4589 | 3789 3689 a6789 | 345789 3578 2 | | 3 25679 2589 | 1789 d289-6 4 | 5789 1578 15789 | | 24789 2479 2489 | 13789 5 c12789 | 6 1378 14789 | |-------------------+---------------------+--------------------| | 179 3579 1359 | 2 689 b15689 | 35789 4 56789 | | 249 23459 6 | 4589 7 589 | 1 2358 589 | | 12479 8 12459 | 1459 469 3 | 2579 2567 5679 | |-------------------+---------------------+--------------------| | 24689 23469 7 | 34589 1 2589 | 2458 2568 4568 | | 12489 249 12489 | 6 2489 25789 | 24578 12578 3 | | 5 2346 12348 | 3478 2348 278 | 2478 9 14678 | *--------------------------------------------------------------*

(6) r1c6 = (6-1) r4c6 = (1-2) r3c6 = (2) r2c5 => - 6 r2c5; btte

Leren

by **P.O.** » Sun Jul 18, 2021 6:00 pm

Code: Select all: same elimination as Leren, another path. 46789 1 4589 3789 3689 6789 345789 3578 2 3 25679 2589 1789 a-2×689 4 5789 1578 15789 24789 2479 2489 13789 5 b-1+2789 6 1378 14789 179 3579 1359 2 d*689 c+15-689 35789 4 56789 249 23459 6 4589 7 589 1 2358 589 12479 8 12459 1459 d4*69 3 2579 2567 5679 24689 23469 7 34589 1 2589 2458 2568 4568 12489 249 12489 6 2489 25789 24578 12578 3 5 2346 12348 3478 2348 278 2478 9 14678 depth: 2 candidate: 6 from start ((2 0) (2 5 2) (2 6 8 9)) if R2C5 is not 2 ((2 0) (3 6 2) (1 2 7 8 9)) R3C6 is 2 ((1 1 10) (4 6 5) (1 5 6 8 9)) R4C6 is 1 ((6 2 2 11) ((4 5 5) (6 8 9)) ((6 5 5) (4 6 9))) one of R4C5 or R6C5 is 6 then singles + intersections.

Phil's 12th