Analysis of xx-ph-00000481-L35-base.sdk
Contents
Original Sudoku
level: deep
position: 1......8...67....3.9....5.......7.1...7.4...2...3.2...5...6.....8....9....2..4..6 initial
Autosolve
position: 1......8...67....3.9....5.......7.1...7.4...2...3.2...5...6....68....9....2..4..6 autosolve
Pair Reduction Variants
Deep Constraint Pair Analysis
Time used: 0:00:00.000007
List of important HDP chains detected for E8,E9: 7..:
* DIS # E9: 7 # B1: 3,5 => CTR => B1: 2,4 * DIS # E9: 7 + B1: 2,4 # G2: 2 => CTR => G2: 1,4 * DIS # E9: 7 + B1: 2,4 + G2: 1,4 # I8: 1,4 => CTR => I8: 7 * PRF # E9: 7 + B1: 2,4 + G2: 1,4 + I8: 7 # B5: 1,3 => SOL * STA # E9: 7 + B1: 2,4 + G2: 1,4 + I8: 7 + B5: 1,3 * CNT 4 HDP CHAINS / 13 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
| 1......8...67....3.9....5.......7.1...7.4...2...3.2...5...6.....8....9....2..4..6 | initial |
| 1......8...67....3.9....5.......7.1...7.4...2...3.2...5...6....68....9....2..4..6 | autosolve |
Classification
level: deep
Pairing Analysis
-------------------------------------------------- * CONSTRAINT PAIRS (AUTO SOLVE) G2,I3: 1.. / G2 = 1 => 1 pairs (_) / I3 = 1 => 1 pairs (_) A4,B4: 2.. / A4 = 2 => 1 pairs (_) / B4 = 2 => 1 pairs (_) D1,D3: 4.. / D1 = 4 => 2 pairs (_) / D3 = 4 => 2 pairs (_) G1,H3: 6.. / G1 = 6 => 1 pairs (_) / H3 = 6 => 0 pairs (_) B1,A3: 7.. / B1 = 7 => 3 pairs (_) / A3 = 7 => 2 pairs (_) E8,E9: 7.. / E8 = 7 => 0 pairs (_) / E9 = 7 => 6 pairs (_) A3,A9: 7.. / A3 = 7 => 2 pairs (_) / A9 = 7 => 3 pairs (_) I1,H2: 9.. / I1 = 9 => 1 pairs (_) / H2 = 9 => 1 pairs (_) C7,A9: 9.. / C7 = 9 => 1 pairs (_) / A9 = 9 => 3 pairs (_) * DURATION: 0:00:05.341574 START: 00:27:19.183260 END: 00:27:24.524834 2020-10-26 * CP COUNT: (9) * INCONCLUSIVE -------------------------------------------------- * DEEP CONSTRAINT PAIRS (PAIR REDUCTION) E8,E9: 7.. / E8 = 7 => 0 pairs (X) / E9 = 7 ==> 0 pairs (*) * DURATION: 0:00:14.663935 START: 00:27:24.525412 END: 00:27:39.189347 2020-10-26 * REASONING E8,E9: 7.. * DIS # E9: 7 # B1: 3,5 => CTR => B1: 2,4 * DIS # E9: 7 + B1: 2,4 # G2: 2 => CTR => G2: 1,4 * DIS # E9: 7 + B1: 2,4 + G2: 1,4 # I8: 1,4 => CTR => I8: 7 * PRF # E9: 7 + B1: 2,4 + G2: 1,4 + I8: 7 # B5: 1,3 => SOL * STA # E9: 7 + B1: 2,4 + G2: 1,4 + I8: 7 + B5: 1,3 * CNT 4 HDP CHAINS / 13 HYP OPENED * DCP COUNT: (1) * SOLUTION FOUND
Header Info
481;L35;elev;21;11.40;1.20;1.20
Appendix: Full HDP Chains
A1. Deep Constraint Pair Analysis
Full list of HDP chains traversed for E8,E9: 7..:
* DIS # E9: 7 # B1: 3,5 => CTR => B1: 2,4 * INC # E9: 7 + B1: 2,4 # E1: 3,5 => UNS * INC # E9: 7 + B1: 2,4 # F1: 3,5 => UNS * INC # E9: 7 + B1: 2,4 # E3: 3,8 => UNS * INC # E9: 7 + B1: 2,4 # F3: 3,8 => UNS * INC # E9: 7 + B1: 2,4 # G2: 1,4 => UNS * DIS # E9: 7 + B1: 2,4 # G2: 2 => CTR => G2: 1,4 * INC # E9: 7 + B1: 2,4 + G2: 1,4 # D3: 1,4 => UNS * INC # E9: 7 + B1: 2,4 + G2: 1,4 # D3: 2,6,8 => UNS * INC # E9: 7 + B1: 2,4 + G2: 1,4 # I7: 1,4 => UNS * DIS # E9: 7 + B1: 2,4 + G2: 1,4 # I8: 1,4 => CTR => I8: 7 * PRF # E9: 7 + B1: 2,4 + G2: 1,4 + I8: 7 # B5: 1,3 => SOL * STA # E9: 7 + B1: 2,4 + G2: 1,4 + I8: 7 + B5: 1,3 * CNT 12 HDP CHAINS / 13 HYP OPENED