Analysis of xx-ph-00001271-L137-base.sdk
Contents
Original Sudoku
level: deep
position: .2.....8.4..1.9.....6...1....9..54......7...2........3..16..5..6..5.4....8..3.... initial
Autosolve
position: 12.....8.4..1.9.....6...1....9..54......7...2........3..16..5..6..5.4....8..3.... autosolve
Pair Reduction Variants
Deep Constraint Pair Analysis
Time used: 0:00:00.000011
List of important HDP chains detected for C2,E2: 8..:
* DIS # E2: 8 # C5: 3,5 => CTR => C5: 4,8 * DIS # E2: 8 + C5: 4,8 # B7: 3,7 => CTR => B7: 4 * DIS # E2: 8 + C5: 4,8 + B7: 4 # C8: 3,7 => CTR => C8: 2 * DIS # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 # H7: 3,7 => CTR => H7: 2,9 * DIS # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 + H7: 2,9 # D1: 3,7 => CTR => D1: 4 * DIS # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 + H7: 2,9 + D1: 4 # F1: 3,7 => CTR => F1: 6 * PRF # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 + H7: 2,9 + D1: 4 + F1: 6 => SOL * STA E2: 8 * CNT 7 HDP CHAINS / 16 HYP OPENED
See Appendix: Full HDP Chains for full list of HDP chains.
Details
This sudoku is deep. Here is some information that may be helpful on how to proceed.
Positions
| .2.....8.4..1.9.....6...1....9..54......7...2........3..16..5..6..5.4....8..3.... | initial |
| 12.....8.4..1.9.....6...1....9..54......7...2........3..16..5..6..5.4....8..3.... | autosolve |
Classification
level: deep
Pairing Analysis
-------------------------------------------------- * CONSTRAINT PAIRS (AUTO SOLVE) E8,F9: 1.. / E8 = 1 => 1 pairs (_) / F9 = 1 => 0 pairs (_) B7,C9: 4.. / B7 = 4 => 0 pairs (_) / C9 = 4 => 3 pairs (_) H5,H6: 5.. / H5 = 5 => 1 pairs (_) / H6 = 5 => 0 pairs (_) A9,C9: 5.. / A9 = 5 => 1 pairs (_) / C9 = 5 => 1 pairs (_) C2,A3: 8.. / C2 = 8 => 0 pairs (_) / A3 = 8 => 3 pairs (_) C2,E2: 8.. / C2 = 8 => 0 pairs (_) / E2 = 8 => 3 pairs (_) A3,B3: 9.. / A3 = 9 => 0 pairs (_) / B3 = 9 => 1 pairs (_) G1,I1: 9.. / G1 = 9 => 3 pairs (_) / I1 = 9 => 0 pairs (_) * DURATION: 0:00:06.345716 START: 20:23:21.763114 END: 20:23:28.108830 2020-11-26 * CP COUNT: (8) * INCONCLUSIVE -------------------------------------------------- * DEEP CONSTRAINT PAIRS (PAIR REDUCTION) G1,I1: 9.. / G1 = 9 ==> 3 pairs (_) / I1 = 9 ==> 0 pairs (_) C2,E2: 8.. / C2 = 8 => 0 pairs (X) / E2 = 8 ==> 0 pairs (*) * DURATION: 0:00:23.249203 START: 20:23:28.109533 END: 20:23:51.358736 2020-11-26 * REASONING C2,E2: 8.. * DIS # E2: 8 # C5: 3,5 => CTR => C5: 4,8 * DIS # E2: 8 + C5: 4,8 # B7: 3,7 => CTR => B7: 4 * DIS # E2: 8 + C5: 4,8 + B7: 4 # C8: 3,7 => CTR => C8: 2 * DIS # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 # H7: 3,7 => CTR => H7: 2,9 * DIS # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 + H7: 2,9 # D1: 3,7 => CTR => D1: 4 * DIS # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 + H7: 2,9 + D1: 4 # F1: 3,7 => CTR => F1: 6 * PRF # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 + H7: 2,9 + D1: 4 + F1: 6 => SOL * STA E2: 8 * CNT 7 HDP CHAINS / 16 HYP OPENED * DCP COUNT: (2) * SOLUTION FOUND
Header Info
1271;L137;elev;21;11.30;1.20;1.20
Appendix: Full HDP Chains
A1. Deep Constraint Pair Analysis
Full list of HDP chains traversed for G1,I1: 9..:
* INC # G1: 9 # I4: 6,8 => UNS * INC # G1: 9 # G6: 6,8 => UNS * INC # G1: 9 # F5: 6,8 => UNS * INC # G1: 9 # F5: 1,3 => UNS * INC # G1: 9 => UNS * INC # I1: 9 => UNS * CNT 6 HDP CHAINS / 6 HYP OPENED
Full list of HDP chains traversed for C2,E2: 8..:
* INC # E2: 8 # B5: 3,5 => UNS * DIS # E2: 8 # C5: 3,5 => CTR => C5: 4,8 * INC # E2: 8 + C5: 4,8 # B5: 3,5 => UNS * INC # E2: 8 + C5: 4,8 # B5: 1,4,6 => UNS * INC # E2: 8 + C5: 4,8 # A7: 3,7 => UNS * DIS # E2: 8 + C5: 4,8 # B7: 3,7 => CTR => B7: 4 * DIS # E2: 8 + C5: 4,8 + B7: 4 # C8: 3,7 => CTR => C8: 2 * INC # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 # G8: 3,7 => UNS * INC # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 # H8: 3,7 => UNS * INC # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 # B4: 3,7 => UNS * INC # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 # B4: 1,6 => UNS * INC # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 # H7: 2,9 => UNS * DIS # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 # H7: 3,7 => CTR => H7: 2,9 * DIS # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 + H7: 2,9 # D1: 3,7 => CTR => D1: 4 * DIS # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 + H7: 2,9 + D1: 4 # F1: 3,7 => CTR => F1: 6 * PRF # E2: 8 + C5: 4,8 + B7: 4 + C8: 2 + H7: 2,9 + D1: 4 + F1: 6 => SOL * STA E2: 8 * CNT 16 HDP CHAINS / 16 HYP OPENED