The New Sudoku Players' Forum

[champagne]

here another challenger.

2 sets of grids (likely coming out of mith's file) expanded to the point where I stop to produce the players PH files.

some are not degenerated, some are, but I think that they are locked on the same patterns
the TH threat should be in all of them

digits 257 in solution grid 429410608
digits 148 in solution grid 321827252

Code: Select all

........9....891...9..31.4..1.968357.3.14.8..86.3..4.1.4.8..9..6...93..4....14...   429410608   33   110   257   6
........9....891...9..31.4..1.9.835..3.1..8..86.32.4.1.4.8..9..6...9...49....4...   429410608   30   110   0   0
........9....891...9..31.4..1.9.835..3.1..8..86.32.4.1.4.8..9..6...93..4....14...   429410608   31   112   0   0
........9....891...9..31.4..1.9.835..3.1..8.286.3..4.1.4.8..9..6...93..4....14...   429410608   31   111   0   0
........9....891...9..31.4..1.9.835..3.1..8.286.3..4.1.4.8..9..6...93..49....4...   429410608   31   112   0   0
1.......9....891...9..31.4..1.9.835..3.1..8..86.32.4.1.4.8..9..6...9...4....14...   429410608   31   111   0   0
1.......9....891...9..31.4..1.9.835..3.1..8.286.3..4.1.4.8..9..6...9...4....14...   429410608   31   111   0   0
......7...5.7.9.2.7..2.3...2...3..5....5......75...4..3.7.2..9.58.69.37.9..375.4.   321827252   30   109   148   0
......7...5.7.9.2.7..2.3...2...3..5..3.5......75...4..3.7.28.9.5..69.37.9..375.4.   321827252   31   110   0   0
....5.7...5.7.9.2.7..2.3...2...3..5..3........75...4..3.7.28.9.5..69.37.9..37..4.   321827252   30   109   0   0



[Cenoman]

With the same approach as in your previous challenge (not posted my own, as it was similar to others', already posted)
- look at a pattern in the first puzzle, and then look at the presence of the same pattern in a multi-solution puzzle, made of common givens,
- then look a the similarity (or not) in the end of the solutions, for all different puzzles,

For the first series of 7 puzzles (solution grid 429410608), all of them have a JE pattern @band 1:
JE (2567)r1c56, r2c2, r3c7 leading to the following eliminations: -68r3c9 => +4r2c1, +6r2c3 (with lcls). BD 6 being True in the mirror node r2c13 has to be True also in the target => +6r3c7. From there ratings decrease to skfr 7.6, 8.9, 8.5, 7.8, 8.4, 8.4, 8.7 for puzzles 1 to 7 resp. Puzzle 1 is a bit easier, due the the given 7r4c7, making 7 to be a False base digit.

For the second series of 3 puzzles (solution grid 321827252), all of them have a JE pattern @band 1:
JE (1468)r1c46, r2c1, r3c8 leading to the following eliminations: -34r2c3 => +5r3c7, +4r3c9 (with lcls). BD 4 being True in the mirror node r3c79 has to be True also in the target => +4r2c1. From there, ratings decrease to skfr 9.0, 8.5, 9.0 for puzzles 1 to 3 resp.

I don't see any TH threat in these puzzles.

[champagne]

I don't see any TH threat in these puzzles.

Agreed and well done,

EDIT checked that the puzzles don't come from mith's file. I have to move such puzzles in the noth file

[Cenoman]

I have to dig in your paths,

Indications about my paths:

-68r3c9 in the first series: -6r3c9 because there is no 6 in target cell r2c2; -8r3c9 because there is already a non base-digit 4r3c8 locked in the mirror node. Then lcls yielding +6r2c3, setting digit 6 as a true base digit.

Similarly, -34r2c3 in the second series: -4r2c3 because there is no 4 in target cell r3c8; -3r2c3 because there is already a non base-digit 5r2c2 locked in the mirror node. Then lcls yielding +4r3c9, setting digit 4 as a true base digit.