The BxB classification of T&E(2) puzzles

Everything about Sudoku that doesn't fit in one of the other sections

Re: The BxB classification of T&E(2) puzzles

Postby coloin » Thu Jul 24, 2025 10:58 pm

yes.. you can see that the TE3 minexpand and TE2 maxexpand puzzles are in the same region as each other... but with an extra clue in the TE3
Hidden Text: Show
Code: Select all
1.....78.4.718.2.3....7..1424.967...7....4......8.34..3.2..8..1.74..18.281....3..###123456789457189263689372514245967138738514926961823475392748651574631892816295347
1.....78.4.718.2.3....7..1424.967...7..5........8.34..3.2..8..1.74...8.281....3..###123456789457189263689372514245967138738514926961823475392748651574631892816295347
1.....78.4.718.2.3....7..1424.967...7..5........8.34..3.2..8..1.74..18.281....3..###123456789457189263689372514245967138738514926961823475392748651574631892816295347
1.....78.4.718.2.3....7..1424.967...7..5.4......8.34..3.2..8..1.74..18.281....3..###123456789457189263689372514245967138738514926961823475392748651574631892816295347
                                                                                                                                                                     
1..4..78.4.718.2.3.......1424.967...7....4......8.34..3.2..8..1.74..18.281....3..###123456789457189263689372514245967138738514926961823475392748651574631892816295347
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1.3..6...45.1.9.3..96....1......19.8....951729.....4.33...64...56.91.3...4.5.3...###123456789457189236896237514275341968634895172981672453319764825562918347748523691
1.3..6...45.1.9.36.96....1......1..8....951729.....4.33...64...56.91.3...4.5.36..###123456789457189236896237514275341968634895172981672453319764825562918347748523691
1.3..6...45.1.9.36.96....1......19......951729.....4.33...64...56.91.3...4.5.36..###123456789457189236896237514275341968634895172981672453319764825562918347748523691
1.3..6...45.1.9.36.96....1......19.8....951729.....4.33...64...56.91.3...4.5.36..###123456789457189236896237514275341968634895172981672453319764825562918347748523691
                                                                                                                                                                     
1.3..6..945.1.9.36.96...........19......951729.....4.33...64...56.91.3...4.5.36..###123456789457189236896237514275341968634895172981672453319764825562918347748523691
#####################################################################################################################################################################
                                                                                                                                                                     
....56......1.926...923..15.3.....96...9..13.91.36.5.2392....5..4.5.3...785......###123456789457189263869237415234715896576928134918364572392841657641573928785692341
....56......1.926...923..15.3.....96...9..13.91.36.5.2392...65..4.5.3....856.....###123456789457189263869237415234715896576928134918364572392841657641573928785692341
....56......1.926...923..15.3.....96...9..13.91.36.5.2392...65..4.5.3...7856.....###123456789457189263869237415234715896576928134918364572392841657641573928785692341
                                                                                                                                                                     
....56......1.926...923..15.3.....96...9..13.91.36.5.2392...65..4.5......8569....###123456789457189263869237415234715896576928134918364572392841657641573928785692341
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.234..7.94.7....6369.......2.9..8......724.96..69.5.....4....32.62.4397......26.4###123456789457189263698237415219368547385724196746915328574691832862543971931872654
.234..7.94.7....6369.......2.9..8......724.96..6915.....4....32.62.4397......26.4###123456789457189263698237415219368547385724196746915328574691832862543971931872654
                                                                                                                                                                     
.234..7.94.7....6369.........9..8......724.96.469.5.....4....32.62.4397......26.4###123456789457189263698237415219368547385724196746915328574691832862543971931872654
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1.3....8..57....36....3...1.38...67.5.68...13...3..8.5..5721......59.......6.3157###123456789457189236689237541238915674546872913971364825365721498714598362892643157
                                                                                                                                                                     
1.3..678..57....3668...75.1..8...67.5.687..13....6.8.5..5.21.......9.......6.3157###123456789457189236689237541238915674546872913971364825365721498714598362892643157
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12....78..57...2.66.8....152.56..1.........2.78..1.56....3........947.52.72..8...###123456789457189236698732415245693178316875924789214563564321897831947652972568341
12....78..57...2.66.8....152.56..1.........2.78..1.56....32.......947.52.72..8...###123456789457189236698732415245693178316875924789214563564321897831947652972568341
12....78..57...2.66.8....152.56..1.........2.78.21.56....3........947.52.7...8...###123456789457189236698732415245693178316875924789214563564321897831947652972568341
                                                                                                                                                                     
12...678..57...2.66.8..2.152.56......16....2.78.21.56....3........9.7.5..72.68...###123456789457189236698732415245693178316875924789214563564321897831947652972568341
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12....78..57...2.66.8....1528..1.56........7.7.56..1.....3........942.57.72..8...###123456789457189236698237415289714563316825974745693128564371892831942657972568341
12....78..57...2.66.8....1528..1.56........7.7.56..1.....37.......942.57.72..8...###123456789457189236698237415289714563316825974745693128564371892831942657972568341
12....78..57...2.66.8....1528.71.56........7.7.56..1.....3........942.57.72..8...###123456789457189236698237415289714563316825974745693128564371892831942657972568341
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12...678..57...2.66.8..7.1528.71.56..16....7.7.56........3........9.2.5..72.68...###123456789457189236698237415289714563316825974745693128564371892831942657972568341
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coloin
 
Posts: 2624
Joined: 05 May 2005
Location: Devon

Re: The BxB classification of T&E(2) puzzles

Postby blue » Fri Jul 25, 2025 2:42 am

coloin wrote:Here are new batches of max-expands 11-15 and a link to the 4248 new minimals
(...)
BxB-Mastermins11-15.txt

My code has 30 of the puzzles in T&E(3) -- none with "mith" solution grids.

Code: Select all
...45.........9...689.72...29.7..86..1.......7......1..61...92.8.2....71.7...16.8
...45.........9...689.72...29.71.86..1.......7......1..61...92.8.2....71.7....6.8
...4.........89......37.154.31...64.5.4....7.67....3.5.6......7.......6..45.67.13
...4.....4...89......37.15..31...64.5.4....7.67....3.5.6......7.......6..45.67.13
...4.........89......37.154.31...64.5.46...7.67....3.5.6......7.......6..45..7.13
...4.....4...89......37.15..31...64.5.46...7.67....3.5.6......7.......6..45..7.13
.2..5....45..891........5.........4....81.29..4....3.6.1492..5.....48...89.5.1.2.
.2..5....45..891........5.........4....81429.......3.6.1492..5.....48...89.5.1.2.
1........45.....23.89..1........5..7.3..172.4.7....5..3.....4.15...24.7....1.3.5.
1........45....123.89...........5..7.3..172.4.7....5..3.....4.15...24.7....1.3.5.
1.3......45.....23.89..1........5..7.3..172.4.7....5........4.15...24.7....1.3.5.
1.3......45....123.89...........5..7.3..172.4.7....5........4.15...24.7....1.3.5.
1........45.....23.89..1........5..7.35.172.4.7....5..3.....4.1....24.7....1.3.5.
1........45....123.89...........5..7.35.172.4.7....5..3.....4.1....24.7....1.3.5.
1.3......45.....23.89..1........5..7.35.172.4.7....5........4.1....2437....1.3.5.
1.3......45....123.89...........5..7.35.172.4.7....5........4.1....2437....1.3.5.
.2..56....5.18..6.......5...4.....78.8....9......4.6.1.62.14...5.482....81.6.5..2
.2..56...45.18..6.......5.........78.8....9......4.6.1.62.14...5.482....81.6.5..2
.2..56....5.18..6.......5...4....37..8....9......48..1.62.14...5.482....81.6.5..2
.2..56...45.18..6.......5........37..8....9......48..1.62.14...5.482....81.6.5..2
.2..56....5.18..6.......5...4....378.8....9......4...1.62.14...5.482....81.6.5..2
.2..56...45.18..6.......5........378.8....9......4...1.62.14...5.482....81.6.5..2
....56......78.132...1.........4...8.34.2..17..8....4.3.7...8...128..4.3...2...71
....56......78.132...1.........4...8.34.28.17..8....4.3.7...8...12...4.3...2...71
....56......78.132...1.2.......4...8.34.2..17..8....4.3.7...82..128..4.3.......71
....56......78.132...1.2.......4...8.34.28.17..8....4.3.7...82..12...4.3.......71
....56......78.132...1.........4...8.34.2..71..8....4.3.7...8...128..4.3...2....7
....56......78.132...1.........4...8.34.28.71..8....4.3.7...8...12...4.3...2....7
....56......78.132...1.2.......4...8.34.2..71..8....4.3.7...82..128..4.3........7
....56......78.132...1.2.......4...8.34.28.71..8....4.3.7...82..12...4.3........7


Was that to be expected ?
Do I have a bug in my code to check for T&E(n>2) ?

Going by the solution grids, they must have have come from these "max-expands":

Code: Select all
...45.........9...689.72...29.71.86..18......7.6....1..61..792.8.2....7197...16.8 #3 #  3816 FNBP C33/M2.235.27  # 7 (*)
...4.....4...89......37.154.317..64.5.46...7167....3.5.6....4.7......56..45.67.13 #3 # 36791 FNBP C34/M2.94.69   # 8 (*)
.2..5....45..891.2.....25.........4....81429..4....3.6.1492..5.5.2.48...89.5.1.2. #2 #   800 FNBP C33/M1.2.45    #12 (*)
1.3......45....123.89..1........5..7.35.172.4.7....5..3..57.4.15...2437....1.3.52 #1 #   468 FNBP C34/M1.3.38    # 9 (*)
.2..56...45.18.26.......5..24....378.8....9......486.1.62.14...5.482...681.6.5..2 #1 # 95489 FNBP C35/M2.28.1872 # 8 (*)
....56......78.132...1.2.......4...8.34.28.17..8....4.3.7...82..128..4.384.2...71 #2 #   487 FNBP C33/M1.3.39    #12 (*)
....56......78.132...1.2.......4...8.34.28.71..8....4.3.7...82..128..4.384.2...17 #2 #   487 FNBP C33/M1.3.39    #12 (*)
blue
 
Posts: 1078
Joined: 11 March 2013

Re: The BxB classification of T&E(2) puzzles

Postby denis_berthier » Fri Jul 25, 2025 3:12 am

Hi Blue
I also find 30 minimals in T&E(3)
.I had eliminated them before computing the solution grids, so that the 7 new ones I found above are for puzzles in T&E(2).
.
denis_berthier
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Location: Paris

Re: The BxB classification of T&E(2) puzzles

Postby blue » Fri Jul 25, 2025 3:35 am

denis_berthier wrote:I also find 30 minimals in T&E(3)

Good news.
Thank you.
blue
 
Posts: 1078
Joined: 11 March 2013

Re: The BxB classification of T&E(2) puzzles

Postby denis_berthier » Fri Jul 25, 2025 3:50 am

coloin wrote:yes.. you can see that the TE3 minexpand and TE2 maxexpand puzzles are in the same region as each other... but with an extra clue in the TE3
[hidden][code]1.....78.4.718.2.3....7..1424.967...7....4......8.34..3.2..8..1.74..18.281....3..###123456789457189263689372514245967138738514926961823475392748651574631892816295347
1.....78.4.718.2.3....7..1424.967...7..5........8.34..3.2..8..1.74...8.281....3..###123456789457189263689372514245967138738514926961823475392748651574631892816295347
1.....78.4.718.2.3....7..1424.967...7..5........8.34..3.2..8..1.74..18.281....3..###123456789457189263689372514245967138738514926961823475392748651574631892816295347
1.....78.4.718.2.3....7..1424.967...7..5.4......8.34..3.2..8..1.74..18.281....3..###123456789457189263689372514245967138738514926961823475392748651574631892816295347

1..4..78.4.718.2.3.......1424.967...7....4......8.34..3.2..8..1.74..18.281....3..###123456789457189263689372514245967138738514926961823475392748651574631892816295347

Yes, some additional clue, not in the tridagon cells, allows to short-circuit the tridagon T&E(3) complexity.
.
denis_berthier
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Location: Paris

Re: The BxB classification of T&E(2) puzzles

Postby coloin » Fri Jul 25, 2025 11:09 am

blue wrote: Was that to be expected ?

I mentioned these puzzles in the previous page, but I forgot that they were there when I removed the redundant clues from the "max-expands" :roll: :oops:
I guess I should remove those minimal TE3 puzzles

Hidden Text: Show
Code: Select all
.2..56...45.18.26.......5..24....378.8....9......486.1.62.14...5.482...681.6.5..2 # 8#     max-expand
.2..56....5.18.26.......5...4....378.8....9......486.1.62.14...5.482...681.6.5..2 #-4#TE3  min-expand
....56......78.132...1.2.......4...8.34.28.17..8....4.3.7...82..128..4.384.2...71 #12#   
....56......78.132...1.2.......4...8.34.28.17..8....4.3.7...82..128..4.3...2...71 #-4#TE3
....56......78.132...1.2.......4...8.34.28.71..8....4.3.7...82..128..4.384.2...17 #12#   
....56......78.132...1.2.......4...8.34.28.71..8....4.3.7...82..128..4.3...2...17 #-4#TE3
1.3......45....123.89..1........5..7.35.172.4.7....5..3..57.4.15...2437....1.3.52 # 9#   
1.3......45....123.89..1........5..7.35.172.4.7....5..3.....4.15...2437....1.3.52 #-4#TE3
...45.........9...689.72...29.71.86..16......7.8....1...1..792.8.2....7197...16.8 # 7#   
...45.........9...689.72...29.71.86..1.......7......1..61..792.8.2....7197...16.8 #-4#TE3
...4.....4...89......37.154.317..64.5.46...7167....3.5.6....4.7......56..45.67.13 # 8#   
...4.....4...89......37.154.317..64.5.46...7167....3.5.6......7.......6..45.67.13 #-4#TE3
.2..5....45..891.2.....25.........4....81429..4....3.6.1492..5.5.2.48...89.5.1.2. #12#   
.2..5....45..891........5.........4....81429..4....3.6.1492..5.....48...89.5.1.2. #-4#TE3

TE3 Minimals
...45.........9...689.72...29.7..86..1.......7......1..61...92.8.2....71.7...16.8
...45.........9...689.72...29.71.86..1.......7......1..61...92.8.2....71.7....6.8
...4.........89......37.154.31...64.5.4....7.67....3.5.6......7.......6..45.67.13
...4.....4...89......37.15..31...64.5.4....7.67....3.5.6......7.......6..45.67.13
...4.........89......37.154.31...64.5.46...7.67....3.5.6......7.......6..45..7.13
...4.....4...89......37.15..31...64.5.46...7.67....3.5.6......7.......6..45..7.13
.2..5....45..891........5.........4....81.29..4....3.6.1492..5.....48...89.5.1.2.
.2..5....45..891........5.........4....81429.......3.6.1492..5.....48...89.5.1.2.
1........45.....23.89..1........5..7.3..172.4.7....5..3.....4.15...24.7....1.3.5.
1........45....123.89...........5..7.3..172.4.7....5..3.....4.15...24.7....1.3.5.
1.3......45.....23.89..1........5..7.3..172.4.7....5........4.15...24.7....1.3.5.
1.3......45....123.89...........5..7.3..172.4.7....5........4.15...24.7....1.3.5.
1........45.....23.89..1........5..7.35.172.4.7....5..3.....4.1....24.7....1.3.5.
1........45....123.89...........5..7.35.172.4.7....5..3.....4.1....24.7....1.3.5.
1.3......45.....23.89..1........5..7.35.172.4.7....5........4.1....2437....1.3.5.
1.3......45....123.89...........5..7.35.172.4.7....5........4.1....2437....1.3.5.
.2..56....5.18..6.......5...4.....78.8....9......4.6.1.62.14...5.482....81.6.5..2
.2..56...45.18..6.......5.........78.8....9......4.6.1.62.14...5.482....81.6.5..2
.2..56....5.18..6.......5...4....37..8....9......48..1.62.14...5.482....81.6.5..2
.2..56...45.18..6.......5........37..8....9......48..1.62.14...5.482....81.6.5..2
.2..56....5.18..6.......5...4....378.8....9......4...1.62.14...5.482....81.6.5..2
.2..56...45.18..6.......5........378.8....9......4...1.62.14...5.482....81.6.5..2
....56......78.132...1.........4...8.34.2..17..8....4.3.7...8...128..4.3...2...71
....56......78.132...1.........4...8.34.28.17..8....4.3.7...8...12...4.3...2...71
....56......78.132...1.2.......4...8.34.2..17..8....4.3.7...82..128..4.3.......71
....56......78.132...1.2.......4...8.34.28.17..8....4.3.7...82..12...4.3.......71
....56......78.132...1.........4...8.34.2..71..8....4.3.7...8...128..4.3...2....7
....56......78.132...1.........4...8.34.28.71..8....4.3.7...8...12...4.3...2....7
....56......78.132...1.2.......4...8.34.2..71..8....4.3.7...82..128..4.3........7
....56......78.132...1.2.......4...8.34.28.71..8....4.3.7...82..12...4.3........7

From next batch 16
......7.9456....31......56..1......863.8.41.58..1.....36..18.5.5.134.....486.5.1. #12#
......7.9456....31......56..1......863.8.41.58..1.....36.....5.5.134.....486.5.1. #-4#TE3
......7.9456....31......56..1......836.8.41.58..1.....5.134....63..18.5..486.5.1. #12#
......7.9456....31......56..1......836.8.41.58..1.....5.134....63.....5..486.5.1. #-4#TE3

4218 minimals BxB-MasterMins11-15-allTE2.txt
coloin
 
Posts: 2624
Joined: 05 May 2005
Location: Devon

Re: The BxB classification of T&E(2) puzzles

Postby coloin » Fri Jul 25, 2025 4:59 pm

coloin wrote:Well, you might be right not to understand... because I cant find a real example where a minimal puzzle has 2 different max expands both in BxB6+

indeed i have found examples where the max expands diverge from the single max-expand !!

All from previously posted BxB>6 max-expands. So these will give a few duplicate minimals ...

These pairs of max expand puzzles cant be furthur expanded without reducing the BxB rating....[some pairs removed]
Hidden Text: Show
Code: Select all
.2345...945.7.9...7.9.23..4...5.7.........6....7....1537.2.4.....293.....94.7523.
.2345...945.7.9..37.9.23..4...5.7.........6....7....1537.2.4.....293.....94.75...
                                                                                 
.23...7.945...9.327.9..354.2.....35.3.4....97.75.3.2.4....1........9.475...6.....
.23...7.945...9.327.9..354.2.....35.3.4....97.75.3.2.4..7.1........9.4.5..26.....
                                                                                 
.2345...945.7.9..27.9.32...24.3.....3.5.74.2..972.5...5.4....9......3........761.
.2345...945.7.9..27.9.32...24.3.....3.5.74.2..972.5...574....9................61.
                                                                                 
12...6.894.6..91.2.89...64.....7........9.214...3.....6.....4.18.2....96.41.6.82.
12...6.894.6..91.2.89...64...4.7........9.21...83.....6.....4.18.2....96.41.6.82.
                                                                                 
.23...7.945...923.7.9..3.452.4...39..75.9.4.29......57.............3.574...61....
.23...7.945...923.7.9..3.452.4...39..75.9.4.29......57..2..........3.5.4..761....
                                                                                 
....5678...718.2.....2.7.1.2.1568....3.......9...........8.56.156..7182....62..5.
....5678...718.2.6...2.7.152.1568....3.......9...........8.56.1....7182....62..5.
                                                                                 
....5678...718.2.....2.7.1.2.1865....3.......9...........5.86.156..7182....62..5.
....5678...718.2.6...2.7.152.1865....3.......9...........5.86.1....7182....62..5.
                                                                                 
....5678...718.2.....2.7.1.2.1865....3.......9...........6.85.156..7182....52..6.
....5678...718.2.6...2.7.152.1865....3.......9...........6.85.1....7182....52..6.
                                                                                 
.23...78.4.7.8..3668....4.....59....374.2.............73...284.8.6....27.42..86.3
.23...78.4.7.8..3668....4.....59..7.3.4.2...........6.73...284.8.6....27.42..86.3
                                                                                 
........9...18.....8....1.5.38.61...7.483.....6.7.4...37..486...416.73..8.631.4..
........9...18.....8....1.5.38.61.747.483.....6.7.4...37..486...416.73..8.631....
                                                                                 
12..567.9.571.92.6...27................597.12..5...8.3.61.2....5....1...79..65...
12..567.9.571.92.66.927................597.12......8.3.61.2....5....1...79..65...
                                                                                 
....56...45..8.......2......14....983.8...1..59....3.4.45.1.9.383..9..159.1.3.84.
....56..945..8.......2....1.14....983.8...1..59....3.4.45.1.9.383..9..15....3.84.
                                                                                 
...4.6...4.7.892.66..27...424..9.....76.28.4.9.8..4.2.....6..927.......586....173
...4.6...4.7.892.66..27...424..9.....76.28.4.9.8..4.2.....6..927......6.86....173
                                                                                 
............189.3.......45.2..97.....912.8.7.87..13....387.2...71.89...39.2.31..7
.2..........1.9.3..8....45.2..97.....912.8.7.87..13....387.2...71.89...39.2.31..7
                                                                                 
............189.3.......45.2..97.....912.8.7.87..31....387.2...71.89...39.2.13..7
.2..........1.9.3..8....45.2..97.....912.8.7.87..31....387.2...71.89...39.2.13..7
                                                                                 
1.3.567...57.8....68...7..........4.361...8.5........251..3....7.8.65.13.368.1...
1.3.567...5718....68.3.7..........4.361...8.5........251..3....7.8.65....368.1...
                                                                                 
1.3.567...57.8....68...7..........4.316...8.5........253..1....7.8.65.13.618.3...
1.3.567...5718....68.3.7..........4.316...8.5........253..1....7.8.65....618.3...
                                                                                 
1.3.567...57.8....68...7..........4.361...8.5........253..1....7.8.65.13.168.3...
1.3.567...5718....68.3.7..........4.361...8.5........253..1....7.8.65....168.3...
                                                                                 
1..4.678.4..18.2.66...27.14...8.........748.1...61..27..5.4....79..6....8.......2
1..4.678.4..18.2.66...27.14...8..46.....748.1...61..27..5......79.......8.......2
                                                                                 
1..4.678.4..18.2.66...27.14...8.........148.7...67..21..5.6....79..4....8.......2
1..4.678.4..18.2.66...27.14...8..64.....148.7...67..21..5......79.......8.......2
                                                                                 
1..4.678.4..18.2.66...27.14...8.........748.1...61..27..5.6....79..4....8.......2
1..4.678.4..18.2.66...27.14...8..64.....748.1...61..27..5......79.......8.......2
                                                                                 
1...56....5.18...668.3.7..1......9.........2.738....653.587.6..81.6.537..76..3...
1.3.56....5718...668.3.7..1......9.........2.738....653.587.6..81.6.5....76..3...
                                                                                 
1..4.678.4..18.2.66...27.41...8.........718.4...64..27..5.1....79..6....8.......2
1..4.678.4..18.2.66...27.41...8..16.....718.4...64..27..5......79.......8.......2
                                                                                 
1..4.678.4..18.2.66...27.41...8.........418.7...67..24..5.6....79..1....8.......2
1..4.678.4..18.2.66...27.41...8..61.....418.7...67..24..5......79.......8.......2
                                                                                 
1..4.678.4..18.2.66...27.41...8.........718.4...64..27..5.6....79..1....8.......2
1..4.678.4..18.2.66...27.41...8..61.....718.4...64..27..5......79.......8.......2
                                                                                 
1.3....8945.....3..89...4.5.91..........2.......6.1.9.51...8.43.38..49.19.4..385.
1.345..8945.....3..89...4.5.91..........2.......6.1.9.51...8.43.38...9.19.4..385.
                                                                                 
1.3....8945.....3..89...4.5.91..........2.......6.1.9.53...8.41.18..49.39.4..385.
1.345..8945.....3..89...4.5.91..........2.......6.1.9.53...8.41.18...9.39.4..385.
                                                                                 
..3.56.....71.9.36..937.51.2.671....8..96......5..........97..5...63..71...5.139.
..3.56.....71.9.36..937.51.2.671....8..96......5......3...9...5...63..71...5..39.
                                                                                 
.2345....45...9...6.93.2.........8...36...........3.613.4.95.2.56.2.4.9..9263..4.
.2345....45...9...6.93.25.4......8...36...........3.613.4.95.2.56.2.4.9..9263....
                                                                                 
1.345....45..89.3..893......359.81..8.1.34...94.51.3..........2598...41........6.
1.345..8945..89.3..893......359.81....1.34....4.51.3..........2598...41........6.
                                                                                 
....5.78..5.18..36.8.7..1.5....673.13.651..78...3.8.6.57.631.....4......9........
....5678..5.18..36.8.7.31.5....673.1...51..78...3.8.6.57.631.....4......9........
                                                                                 
.2..56...45......6..9.........6.5.73....1762....23...1.3..621.7.7.3.1.52.1.57.36.
.2..56...45.....36..9....1....6.5.73....1762....23...1.3..621.7.7.....52.1.57.36.
                                                                                 
1...56....5.18...668.7.3..1......9..378....65.......2.7.583.6..81.6.537..36..7...
1.3.56....5718...668.7.3..1......9..378....65.......2.7.583.6..81.6.5....36..7...
                                                                                 
...45..8.4.......6......14.2.859.....94.78...7..2.4....7582..9.84.9.7.2.9.2.45.7.
...45..8.4.7.....6..9...14.2.859.....94.78...7..2.4....7582..9.84.....2.9.2.45.7.
                                                                                 
1.3..67.9.57..9.36.....715..16...9..53....67.7.9....133.5..1.......4539....8...6.
1.3..67.9.57..9.3669...715..16...9..53....67.7.9....133.5..1.......453.....8.....
                                                                                 
12..5.78..57...2.66.8.2..15.....3....76.........97..6.7.58.162.81.....5..62...8.1
12..5.78..57.8.2.66.8.2..15.....3....76.........97..6.7.5...62.81.....5..62...8.1
                                                                                 
12..5.78..57...2.66.8.2..15.....3....76.........97..6.7.28.165.81.....2..65...1.8
12..5.78..57.8.2.66.8.2..15.....3....76.........97..6.7.2...65.81.....2..65...1.8
                                                                                 
1.3.56..9.571.9..669.73...5.......43......8..7.......137.6.5....6139....9.5..1...
1.3.56..9.571.9..669.73...5...5...43...9..8..7.......137.6.5....6139.........1...
                                                                                 
12..5.78..57.8.2.66.8....15...9.3......8..672..........6....5.77.25...61.15...82.
12..5.78..57.8.2.66.8....15..69.3......8...72..1.......6....5.77.25...61.15...82.
                                                                                 
1.3..6..945.1.9.36.69...........1..86.....4.3....651723...94...59.61.3...4.5.39..
1.3..6..945.1.9.36.69...........16..6.....4.3....651723...94...59.61.3...4.5.39..
                                                                                 
1..4.678.4..18.2.68...27.1429.........5......6.......7...8.4.72...6..8.1....1264.
1..4.678.4..18.2.68...27.1429...8.....5..1...6.......7...8.4.72...6.........1264.
                                                                                 
.23.5..8945..8.23.8.9...5.428.....4..35...89.9.4..83.23.2..5......7.14........9..
.23.5..8945..8.23.8.9...5.428.....4..35...89.9.4..83.2342..5......7.1............
                                                                                 
1.3.5.....571.9.3.89..37.........6.........2.519...3.7.8537....7.19.8..393..15..8
1.3.5.....571.9.3.89..3715.......6.........2.519...3.7.8.37....7..9.8..393..15..8
                                                                                 
1.3..6..945.1.9.36.96...........1..8....951729.....4.33...64...56.91.3...4.5.36..
1.3..6..945.1.9.36.96...........19......951729.....4.33...64...56.91.3...4.5.36..
                                                                                 
1.3..67.9.57..9.36.....715..19...6..53....97.7.6....133.5..1......8...9.....4536.
1.3..67.9.57..9.3696...715..19...6..53....97.7.6....133.5..1......8.........453..
                                                                                 
12..567.9.571.92.6...27...............5...8.3...567.12.91.2....5....1...76..95...
12..567.9.571.92.69.627...................8.3...567.12.91.2....5....1...76..95...
                                                                                 
1.3.5.78..57.8..6368..7.5.1....6..1.....34......9.....3.5...8.687....13..6.....75
1.3.5.78..57.8..6368..7.5.1....6..1.5...34...7..9.....3.5...8.687....13..6.......
                                                                                 
1..4..78.4.718.2.3.......1424.967...7....4......8.34..3.2..8..1.74..18.281....3..
1..4..78.4.718.2.3.......1424.967...7..5........8.34..3.2..8..1.74..18.281....3..
                                                                                 
12.....89.5....26.6.9...1.52.15..9.8.659...1289.2..65.......8.1.1.84.........7...
12..56.89.5....26.6.9...1.52.1...9.8.659...1289.2..65.......8.1.1.84.........7...
                                                                                 
1.3..678..57....6.68....5...38...1..5.631.87.71.....353718.5.......9.......2.....
1.3..678..57....6368....5.1.38...1..5.6...87.71.....353718.5.......9.......2.....
                                                                                 
.23....8.45..8.2.36.8....4528....4.63.68..52..456...3853..6........17..4........2
.23....8.45..8.2.36.8....4528....4.63.68..52..456...38534.6........17............
                                                                                 
1.3.567...57..9...69..7............4361...95........2.51...3...7.9.65.31.3691....
1.3.567...571.9...69.37............4361...95........2.51...3...7.9.65....3691....
                                                                                 
12..56..9.571.9..66.927...12.........16.27...97.5.1....6....8.......5..2.9.....37
12..56..9.571.9..66.927...12..96.....16.27...97.5.1.........8.......5..2.......37

Unfortunately this would tend to rule out a trivial way to max expand puzzles by "summating" the clues in the 81 character text string....
for example
Hidden Text: Show
Code: Select all
minimals found                                                                                                       
....567...567..1...8.1.3..........4.3.......2...83.5..51.6.8...6...7.....37.15...#BxB 10 #11.8/1.2/1.2               
....567...567..1...8.1.3.........34.3.......2...8..5..51.6.8...6...7.....37.15...#BxB 10 #11.8/1.2/1.2               
..3.567...567..1...8.1.3..........4.3.......2...83.5..51.6.8...6..37......7.15...#BxB 10 #11.8/1.2/1.2               
..3.567...567..1...8.1.3.........34.........2...83.5..51.6.8...6...7.....37.15...#BxB 10 #11.8/1.2/1.2               
..3.567...567..1...8.1.3.........34.3.......2...8..5..51.6.8...6..37......7.15...#BxB 10 #11.8/1.2/1.2               
1...567...567..1...8...3..........4.3.......2...83.5..51.6.8...6...7.....37.15...#BxB 10 #11.8/1.2/1.2               
1...567...567..1...8...3.........34.3.......2...8..5..51.6.8...6...7.....37.15...#BxB 10 #11.8/1.2/1.2               
1.3.567...567..1...8...3..........4.3.......2...83.5..51.6.8...6..37......7.15...#BxB 10 #11.8/1.2/1.2               
1.3.567...567..1...8...3.........34.........2...83.5..51.6.8...6...7.....37.15...#BxB 10 #11.8/1.2/1.2               
1.3.567...567..1...8...3.........34.3.......2...8..5..51.6.8...6..37......7.15...#BxB 10 #11.8/1.2/1.2               
                                                                                                                     
                                                                                                                     
min expands                                                                                                           
1.3.567...5678.1..78.1.3..........4.3.......2...83.5..51.6.8...6..37.....37.15... BxB 10                             
1.3.567...5678.1..78.1.3.........34.3.......2...83.5..51.6.8...6..37.....37.15... BxB 10 #11.8/11.8/3.4  [max-expand]
Last edited by coloin on Sat Jul 26, 2025 3:41 pm, edited 3 times in total.
coloin
 
Posts: 2624
Joined: 05 May 2005
Location: Devon

Re: The BxB classification of T&E(2) puzzles

Postby denis_berthier » Fri Jul 25, 2025 6:12 pm

coloin wrote:
coloin wrote:Well, you might be right not to understand... because I cant find a real example where a minimal puzzle has 2 different max expands both in BxB6

indeed i have found examples where the max expands diverge from the single max-expand !!

Perhaps you should revise your vocabulary.

I have no idea what you want to prove.
.
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Re: The BxB classification of T&E(2) puzzles

Postby coloin » Sat Jul 26, 2025 3:32 pm

Yes maybe I should have revised the vocabulary as the majority of the pairs in the list have completely diverse set of minimal puzzles. :oops:
So essentially they are sharing the grid solution ...with no overlap of the minimals...
...
except 3 of the pairs do have at least one minimal puzzle in both camps. On furthur inspection those pairs have differing BxB max-expand level.... :oops: again...
Code: Select all
..3.56.....71.9.36..937.51.2.671....8..96......5..........97..5...63..71...5.139.#max expand BxB  8
..3.56.....71.9.36..937.51.2.671....8..96......5......3...9...5...63..71...5..39.#max expand BxB  9
..3.56.....71....6..937.51.2.671....8..96......5..........9...5...63..71......39.#minimal    BxB  9

12..567.9.571.92.6...27...............5...8.3...567.12.91.2....5....1...76..95...#max expand BxB  9
12..567.9.571.92.69.627...................8.3...567.12.91.2....5....1...76..95...#max expand BxB  8
.2...67.9.5.1.92.6...27...................8.3...567.12.91.2....5....1...76..95...#minimal    BxB  9
 
12..567.9.571.92.6...27................597.12..5...8.3.61.2....5....1...79..65...#max expand BxB  9
12..567.9.571.92.66.927................597.12......8.3.61.2....5....1...79..65...#max expand BxB  8
.2...67.9.5.1.92.6...27................597.12......8.3.61.2....5....1...79..65...#minimal    BxB  9
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Re: The BxB classification of T&E(2) puzzles

Postby Paquita » Wed Aug 06, 2025 8:44 pm

Some more B14B

98765.......9.8.......43....76...52...8...7.9...5...86.69.8..72.5..2......2.....5;14
98765.......9.........43....96.7.82..2.....5...5.2.....7.....98.687..2.5...5..76.;14
98765.......9.8.......43...5.....97..76.....2...5..6.8.69.8.2.7.5..2......2...5..;14
98765.......9.8.......43...5.....97.2.....6.8.76.....2.69.852.7.5..2......2...5..;14
98765.......9.8.......43...5.8...97..76.....2......6.8.69.852.7.5..2......2...5..;14
98765.......9.........43...5.....98..687....2......6.7.96.752.8.2....5....5.2....;14
98765.......9.........43...5.....98..687....2...5..6.7.96.7.2.8.2....5....5.2....;14
98765.......9.8.......43...5.....97..76....52......6.8.69.852.7.5..2......2...5..;14

I want to post lower rated puzzles later; I planned those earlier but then the majority was already published by coloin. I am working on a new batch.
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Re: The BxB classification of T&E(2) puzzles

Postby denis_berthier » Thu Aug 07, 2025 6:25 am

.
Hi Paquita
Great findings
Did you check they are not in the Mastermins collections?
I see you are not using solution-minlex form (the mastermins are in this form). The gsf command line to do it is:
sudoku-gsf.exe -qFN -f'%#.c' < input-file > output-file
.
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Re: The BxB classification of T&E(2) puzzles

Postby denis_berthier » Thu Aug 07, 2025 6:27 am

.
Hi coloin,

In the Mastermins BxB≥7 collections, the three old B7B puzzles are present.
Do you have any means of identifying their descendants in the collections?
.
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Re: The BxB classification of T&E(2) puzzles

Postby Paquita » Thu Aug 07, 2025 10:15 am

Yes I forgot to put the puzzles in minlex. I process puzzles in maxlex, but I use minlex for the SER rates and ususally to present them here.
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Re: The BxB classification of T&E(2) puzzles

Postby coloin » Thu Aug 07, 2025 10:28 pm

denis_berthier wrote:.
In the Mastermins BxB≥7 collections, the three old B7B puzzles are present.
Do you have any means of identifying their descendants in the collections?
.

No … I think they were added to the list manually …not found de novo.

Incidently … have been searching normal ( non-tridagon) puzzles … and it seems very difficult to get more than BxB 4 !!!
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Re: The BxB classification of T&E(2) puzzles

Postby denis_berthier » Fri Aug 08, 2025 2:13 am

coloin wrote:Incidently … have been searching normal ( non-tridagon) puzzles … and it seems very difficult to get more than BxB 4 !!!

If you have a look at Tables 2.8 or 2.9 of [HCCS2], you'll see that the proportion of T&E-depth 2 puzzles with BxB > 4 is about 2.4 %. And this is about collections extremely biased in favour of the hardest (the B1B are absent, the B2B probably grossly under-represented). No wonder the BxB>4 are hard to find.

In the first collections that made their way into Mastermins-1to4, I had identified more than 3 puzzles with no tridagon. That's indeed why I asked you the previous question. But I hadn't checked if they had any degenerate form of the pattern. This is something I should re-check on the whole collection of B7B+. But I have so many things running in parallel that my Mac is begging me to take a rest.
.
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