- Code: Select all
+---+---+---+
|..1|..2|..3|
|.3.|.8.|.9.|
|5..|4..|8..|
+---+---+---+
|..5|..1|..7|
|.4.|.7.|.8.|
|1..|6..|4..|
+---+---+---+
|..6|..3|..8|
|.7.|.2.|.6.|
|9..|8..|3..|
+---+---+---+
Many of the patterns in the patterns game[which produce puzzles with ED > 9.2 ] have 3 clues diagonally placed in a box
So if all the boxes have the diagonal pattern then minlex versions of the puzzles all have similar B12347
- Code: Select all
+---+---+---+
|..1|..2|..3|
|.3.|.8.|.9.|
|5..|4..|8..|
+---+---+---+
|..5|...|...|
|.4.|...|...|
|1..|...|...|
+---+---+---+
|..6|...|...|
|.7.|...|...|
|9..|...|...|
+---+---+---+
Here are some 27 clue "all diagonal" patterns - there may well be a few more
- Code: Select all
001002003020030040400500100006001007080060090200900800008003004050080070300200500
001002003020030010400500600002005007080090040700600900005080090040200500900003008
001002003020010040300500600002006001040030070500800400004200800030060007900003020
001002003020030040300500600002007008030010060600300700007100400080060010100004009
001002003020010040300400500002006004040030200700100080006009007050070900100200060
001002003020010040300500100004006002070100080100020300009005004040090050200400700
001002003020030040300500600002003004070600500800070090003006001090200300700050060
001002003020010040500600100002004001070800900600050030007006500080070006400900070
001002003020030040300500600003007080050040001800900700009008050070060004100400900
001002003020030040500600700002005060050040100800300009007004030090080005400900200
001002003020030040300500600003007100050010020200800009008060400040005007600900010
001002003020010040500600700002060080030007400900300007004070030010008200700100009
001002003020010040500600100002040070060003800400500002009080200010007006300900050
001002003020010040500600700002080600030004009600100050004200300060050090800009006
001002003020030040500100600004010700060400080200009006006900100090020008300005070
001002003020030040400500100003600007060007080100050200006003010070900004900040300
001002003020040050300600700002100080070006002400090600006070090030009001900500800
001002003020010040300500600007300060030007100400020008008700200040005030100080009
001002003020030040500600700002800090080040100400007006003004070090200600700050009
001002003020010040300500600002100700050007008900040050003008004010090070800600300
001002003020010040300500200003600400070005080600040009009004007040700600200030050
001002003020010040300500600005100200040070001200008030009600070060040300800007004
001002003020010040500600100004500700080060030100007005007800400030050090400009006
There are 6 ways to complete a diagonal and 4 boxes to complete.
How many of these all diagonal patterns with 21+ clues can be made by isomorphic swapping to have symmetry [S2 and above] which qualifies it for the game ?
And here is a few - from the non-minimal puzzles above
- Code: Select all
.....1.2.....2...1..75..6....6..2..8.9..3..4.5..6..1....3..42..9...6...5.6.8...9. # 11 FN C25.m/S2.d
..1..3....2..4..3.4..1..5....6..7..1.8..9..6.2..8..9....8..4..3.5..7..8....5..2.. # 758 FNP C25.m/S4.da/M1.3.30
..1..3..2.2.....3.4..1..5....6..7..1.8..9..6.2..8..9....8..4..3.5.....8.3..5..2.. # 1078 FNP C25.m/S2.p/M1.2.54
..1.2.3...2...3..44..5...1..5...8.....8.3.4.....2...5..8...6..92..9...8...6.1.7.. # 1160 FNP C25.m/S2.p/M1.4.27
..1.3...2.2...4.3.5..7..6....7.....4.9..5..8.4.....9....2..6..5.5.1...4.8...9.3.. # 293 FNP C25.m/S2.p/M1.6.1
..21...3......2..45...3....6..3..4....5..7..8.4..6..9....9...7.7....46...3..2...5 # 500 FNP C24.m/S2.d/M1.14.2
..28....9.8...4.1.4...7.6...2...3..4....2....5..6...7...3.4...7.9.2...6.7....59.. # 415 FNP C25.m/S2.p/M1.10.4
.1.3..2..2...5..4......7..63..1..9...6.....7...9..8..57..2......2..8...1..4..6.9. # 378 FNP C24.m/S4.da/M1.10.6
.2...1.3.1...2.......3....6..1..2..7.7..5..8.4..9..5.......3.4.9...1.7....68....3 # 729 FNP C24.m/S2.d/M1.2.52
.3...1.2.4...2......75..6....6..2..8.9..3..4.5..6..1....3..42..9...6...5...8...9. # 469 FNP C25.m/S2.d/M1.18.5
.6...7..18..9...6...2.8.9...1......2..4.1.5..2......3...3.5.2...8...4..35..7...8. # 720 FNP C25.m/S4.da/M1.5.11
1..2..3....2..1..4.3..5..1.4..6..2....7.....8.1...2.3.9..5..4....4..9..5.2..4..7. # 194 FNP C26.m/S2.d/M1.3.27
1..2..3...2..1..4...5..6...4....5..7.8..6..3...17..5..7....8..4.3..5..9....9..6.. # 515 FNP C25.m/S2.d/M1.22.5
1..3.......2.....3.4..1..5.6..7..1....8..9..6....8..9....4..3....5..7..8.3..5..2. # 1824 FNP C23.m/S2.d/M1.2.26
2...1...3..3..2....5.4..1....6..8.9.1...6...7.9.2..8....8..5.7....3..5..3...8...4 # 845 FNP C25.m/S4.da/M1.6.10
2..1...3...3..2..4.5....6..7..3..1.......5..2.8..2..9...68..4..5....4.7..9..6.... # 519 FNP C24.m/S2.d/M1.20.3
3..2....1..1..3.2..6..5.4..7..5....2..4..9.8..9..6......9.....5.5..2....8..3..9.. # 780 FNP C24.m/S2.d/M1.4.35
C