The New Sudoku Players' Forum

[champagne]

Here the second UA4

Code: Select all

98765.......4..........3...87..2.9.6.95.6..726.2...85.25.....9..68....277.9...5.8
98765.......4..........3...87..6.9.2.95.2..766.2...85.25.....9..68....277.9...5.8 # original


and another possible definition of the property

If an UA of the solution grid is in the given, then you can switch to the twin(s) puzzle(s)

[coloin]

[code]...IMO These twin close to the original have a better chance to give good results

Maybe .. im not sure what is the best way to extend the vivinity search..
blunderbust aproach is what I am doing !!

[champagne]

chunk 18 m closed (solution grids rank 18M1 to 19M)
not bad, but 11.6 remains difficult to pass with skfr

Code: Select all

67..41...9...3.........8......45..13...1.38.9....8954..3..94.5....3.51.4.4.81.93.;11.3/11.3/10.4
.......8...2........4..76...8.31..651..5.67.8....7813.6.8.35.71...7.18.6.71....5.;11.3/11.3/2.6
..4....8............2..76...8.31..651..5.67.8....7813.6.8.35.71...7.18.6.71....5.;11.3/11.3/2.6
67...1...9...3.........8......45..134..1.38.9....8954..3..94.5....3.54.1.4.81.93.;11.4/11.4/10.4
..4......37.4..2........149...64..211..9.86.44...1298.....84..6.4.1.9..2...26.4..;11.4/11.4/2.6
.72..5.1.5.........9....54....53..94...4.98.19...1835.....54.89.893.14.5......1..;11.4/11.4/2.6
......9784.68..3..............31..57...9.58.3....7819...7.59.81..87.3..9...18.73.;11.5/11.5/2.6
4.68.7......2.1....2....8.9...7...25..79.21.8.....579.....29.51..15.8..7...17.98.;11.5/11.5/3.4
...9.7...397......84....7....679..12..91.26.5....5697.....15......2.91..91.67..2.;11.6/10.3/2.6
8.4..2.6..........2..659......56..797..2.15.6....9721.....16.9....9.57.1...72.65.;11.6/11.4/2.6
2.4..7.3.......78..1..3.......78..13...1.35.6....6587.....51.68...6.83.7..837..5.;11.6/11.6/2.6

[champagne]

2 more chunk closed

chunk 19 similar to previous ones

Code: Select all

....9.2.......1....347.2.....921..561..6.57.9....7912.....56.9.6..9.75.....12.67.;11.3/11.3/2.6
.4...8....9...13....7.........87..65...5.61.3....1378.36..85....1.3.75.6..516..3.;11.3/11.3/2.6
.....6...29...1.....7........531..877..6.53.1....7865..7..53.1....1.75.8.5.86.73.;11.4/11.4/10.4
97.........8........4.5....7.956..21...2.19.71...9756.....72.....76.51.2..591.67.;11.4/11.4/2.6
...87.....4.....6.29.....8...513..78..37.86.5....6531.....87.56...5.38.1...61.7..;11.5/11.5/2.6
84.........2........7.51......79..65..61.27.9..9.6512.....29...91.5.76.2...61.95.;11.5/11.5/8.3
.....3....94........2....8.1..65..787..3.16.5....8731.....16.5....5.81.7.5173.86.;11.5/11.5/9.2
....86.....6....7.29.........531..87...6.53.1....7865..7..53.1....1.75.8.5.86.73.;11.5/11.5/9.4
9.2...3....4...5.....13.......87..56.8.5.61.3.6..1378.....68.37...3.16.5...75..1.;11.6/11.6/2.6
974.........57......2.....7...78..13.8.1.35.6....5687.6.8.37..13..6.5..8...81....;11.6/2.0/2.0

and a poor in very high ratings

Code: Select all

3.8.........6.7.........5.....97..657..5.61.2..6.1279.2.1.69.57...1.52.9...72..1.;11.3/11.3/2.6
85.....2.......8...7.281......64..9846.9.81.2....12.......94.869..1.62.4...82.9..;11.3/11.3/2.6
85.....2.......8...7.281......64..9846.9.81.2....12.......96.849..1.42.6...82.9..;11.3/11.3/2.6
5.7.21...8.............9......46..124..1.29.8....9864...2.84.6....2.61.4..491.82.;11.4/11.4/10.4

The first step (target 33 millions solution grids processed) could be over in 2 months
I started implementation of a tailor made vicinity search to work on the best seeds

[champagne]

chunk 21 closed, only 5 skfr>=11.3, but a new 11.7
now five 11.7 in expanded puzzles,

Code: Select all

8.....2.1.3....9....79.2......12..65.6.7.91.2....5679.....95.1....2.16.9...67.52.;11.4/11.4/10.3
59...3........7.....8.2.......64..3246.3.27.8....7846...4.86.2....2.48.3...73.64.;11.4/11.4/11.1
.38..19......9....9......1....21..65.2.5.67.9..6.7912.....52.91...9.7..6...16.27.;11.4/11.4/2.6
..8.........671...3......67...79..56...1.27.9....6512.5.7.26.9....9.7...9.251.67.;11.6/11.0/2.6
.415...........5...9.7........31..56..36.57.8....7813.8...63......8.76.567.15.38.;11.7/11.3/7.1


[champagne]

chunks 22 and 24 closed one more 11.7

Code: Select all

......2...16...3.95.4.3....7..45..32...7.94.54...2379...2.95......2.4..3.4.37..2.;11.3/11.3/2.6
.12...8............5..8..6..2364..877.....6.4......32..7..24..6...7.62.82..83.74.;11.3/2.0/2.0
.1...5..93.4..........7.....2.65..97.6.9.72.1....2156.....96.759....21......1.92.;11.4/11.4/2.6
4.62..9........312.2..........71..232..3.57.9....2915.....52.919..1.3..7...97..3.;11.5/11.5/2.6

Code: Select all

2.6.....9.....3.......9...1...31..981.39.84.5....4513.8...39.1..9.5.1..3...48.95.;11.3/10.9/10.4
......8.5.....3....42.5.3..7..31..56...6.57.8....7813..35.86......5.1..3..173.58.;11.3/11.3/2.6
.4.1.2...2...9......8......7..65..12.2.9.75.6..6.2197...2.76..9.6.2.91.7...51....;11.3/11.3/2.6
..8..7.....2.....39.4...5...8.31..56...6.57.8.5..7813.8.5.63..1...8.1..5...75....;11.6/1.5/1.5
..8.......72.....39.4...5...8.31..56...6.57.8.5..7813.8.5.63.71...8.1..5...75....;11.6/10.4/7.2
.2.8.....4.6.3..........1.3...31..72.3.7.58.1.7..8253...7.23..5...1.82.7...57.3..;11.6/11.6/7.1
..8.....1314.........51.......12..79.2.7.95.6....5621.9.2.61..76..9.5..2...27....;11.6/2.0/2.0
.34....6.2...56...6.8...9..7..21..561..6.57.9....7912...5.62.9....7.1......59....;11.7/11.7/3.4


The ratio number of start/ solution grid continues to go down slowly, now 1.3 for an average expected of 0.5