Analysis of xx-ph-00001388-313-base.sdk
Contents
Original Sudoku
level: deep
position: .....678....1....6.6..7..4..1...4..83...2..1...5...3...8...1..7..2.9....9..5..... initial
Autosolve
position: .....678....1....6.6..7..4..1...4..83...2..1...5.1.3...8...1..7..2.9....9..5..... autosolve
Pair Reduction Variants
Deep Constraint Pair Analysis
Time used: 0:00:00.000008
List of important HDP chains detected for D7,F9: 2..:
* DIS # F9: 2 # B9: 3,4 => CTR => B9: 7 * DIS # F9: 2 + B9: 7 # B1: 3,4 => CTR => B1: 2,5,9 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 # B2: 3,4 => CTR => B2: 2,5,9 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 # G3: 2,9 => CTR => G3: 1,5 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 # G4: 2,9 => CTR => G4: 5,6 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 # G2: 5 => CTR => G2: 2,9 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 + G2: 2,9 # H2: 2,9 => CTR => H2: 3,5 * PRF # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 + G2: 2,9 + H2: 3,5 # H6: 2,9 => SOL * STA # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 + G2: 2,9 + H2: 3,5 + H6: 2,9 * CNT 8 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
| .....678....1....6.6..7..4..1...4..83...2..1...5...3...8...1..7..2.9....9..5..... | initial |
| .....678....1....6.6..7..4..1...4..83...2..1...5.1.3...8...1..7..2.9....9..5..... | autosolve |
Classification
level: deep
Pairing Analysis
-------------------------------------------------- * CONSTRAINT PAIRS (AUTO SOLVE) A8,C9: 1.. / A8 = 1 => 0 pairs (_) / C9 = 1 => 0 pairs (_) D7,F9: 2.. / D7 = 2 => 0 pairs (_) / F9 = 2 => 4 pairs (_) D4,E4: 3.. / D4 = 3 => 1 pairs (_) / E4 = 3 => 3 pairs (_) E4,F5: 5.. / E4 = 5 => 2 pairs (_) / F5 = 5 => 2 pairs (_) H4,H6: 7.. / H4 = 7 => 2 pairs (_) / H6 = 7 => 1 pairs (_) C5,A6: 8.. / C5 = 8 => 0 pairs (_) / A6 = 8 => 1 pairs (_) G8,G9: 8.. / G8 = 8 => 1 pairs (_) / G9 = 8 => 0 pairs (_) E2,E9: 8.. / E2 = 8 => 0 pairs (_) / E9 = 8 => 1 pairs (_) G7,H7: 9.. / G7 = 9 => 1 pairs (_) / H7 = 9 => 0 pairs (_) * DURATION: 0:00:07.567863 START: 23:37:44.729663 END: 23:37:52.297526 2020-11-27 * CP COUNT: (9) * INCONCLUSIVE -------------------------------------------------- * DEEP CONSTRAINT PAIRS (PAIR REDUCTION) D7,F9: 2.. / D7 = 2 => 0 pairs (X) / F9 = 2 ==> 0 pairs (*) * DURATION: 0:00:22.816598 START: 23:37:52.298323 END: 23:38:15.114921 2020-11-27 * REASONING D7,F9: 2.. * DIS # F9: 2 # B9: 3,4 => CTR => B9: 7 * DIS # F9: 2 + B9: 7 # B1: 3,4 => CTR => B1: 2,5,9 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 # B2: 3,4 => CTR => B2: 2,5,9 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 # G3: 2,9 => CTR => G3: 1,5 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 # G4: 2,9 => CTR => G4: 5,6 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 # G2: 5 => CTR => G2: 2,9 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 + G2: 2,9 # H2: 2,9 => CTR => H2: 3,5 * PRF # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 + G2: 2,9 + H2: 3,5 # H6: 2,9 => SOL * STA # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 + G2: 2,9 + H2: 3,5 + H6: 2,9 * CNT 8 HDP CHAINS / 16 HYP OPENED * DCP COUNT: (1) * SOLUTION FOUND
Header Info
1388;313;elev;23;11.30;1.20;1.20
Appendix: Full HDP Chains
A1. Deep Constraint Pair Analysis
Full list of HDP chains traversed for D7,F9: 2..:
* INC # F9: 2 # C7: 3,4 => UNS * DIS # F9: 2 # B9: 3,4 => CTR => B9: 7 * INC # F9: 2 + B9: 7 # C9: 3,4 => UNS * INC # F9: 2 + B9: 7 # D8: 3,4 => UNS * INC # F9: 2 + B9: 7 # I8: 3,4 => UNS * DIS # F9: 2 + B9: 7 # B1: 3,4 => CTR => B1: 2,5,9 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 # B2: 3,4 => CTR => B2: 2,5,9 * INC # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 # G2: 2,9 => UNS * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 # G3: 2,9 => CTR => G3: 1,5 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 # G4: 2,9 => CTR => G4: 5,6 * INC # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 # G2: 2,9 => UNS * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 # G2: 5 => CTR => G2: 2,9 * DIS # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 + G2: 2,9 # H2: 2,9 => CTR => H2: 3,5 * INC # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 + G2: 2,9 + H2: 3,5 # H4: 2,9 => UNS * PRF # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 + G2: 2,9 + H2: 3,5 # H6: 2,9 => SOL * STA # F9: 2 + B9: 7 + B1: 2,5,9 + B2: 2,5,9 + G3: 1,5 + G4: 5,6 + G2: 2,9 + H2: 3,5 + H6: 2,9 * CNT 15 HDP CHAINS / 16 HYP OPENED