Analysis of xx-ph-00001260-501-base.sdk
Contents
Original Sudoku
level: deep
position: .2.4....9.......3....2.7....7.9....43......5...8...6..5...9.8....6.1.....9...4..1 initial
Autosolve
position: .2.4....9.....9.3....2.7....7.9....43......5...8...6..5...9.8....6.1.....9...4..1 autosolve
Pair Reduction Variants
Deep Constraint Pair Analysis
Time used: 0:00:00.000026
List of important HDP chains detected for B7,C7: 1..:
* DIS # C7: 1 # B3: 3,4 => CTR => B3: 1,5,6,8 * DIS # C7: 1 + B3: 1,5,6,8 # B8: 8 => CTR => B8: 3,4 * DIS # C7: 1 + B3: 1,5,6,8 + B8: 3,4 # C3: 3,5 => CTR => C3: 4,9 * DIS # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 # A3: 4,9 => CTR => A3: 1,6 * DIS # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 + A3: 1,6 # F4: 1,3 => CTR => F4: 5,6,8 * PRF # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 + A3: 1,6 + F4: 5,6,8 => SOL * STA C7: 1 * CNT 6 HDP CHAINS / 31 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
| .2.4....9.......3....2.7....7.9....43......5...8...6..5...9.8....6.1.....9...4..1 | initial |
| .2.4....9.....9.3....2.7....7.9....43......5...8...6..5...9.8....6.1.....9...4..1 | autosolve |
Classification
level: deep
Pairing Analysis
-------------------------------------------------- * CONSTRAINT PAIRS (AUTO SOLVE) F1,D2: 1.. / F1 = 1 => 1 pairs (_) / D2 = 1 => 0 pairs (_) B7,C7: 1.. / B7 = 1 => 2 pairs (_) / C7 = 1 => 2 pairs (_) G2,I2: 2.. / G2 = 2 => 1 pairs (_) / I2 = 2 => 2 pairs (_) G4,I6: 3.. / G4 = 3 => 1 pairs (_) / I6 = 3 => 2 pairs (_) E5,E6: 4.. / E5 = 4 => 1 pairs (_) / E6 = 4 => 1 pairs (_) C4,B6: 5.. / C4 = 5 => 1 pairs (_) / B6 = 5 => 1 pairs (_) A4,B5: 6.. / A4 = 6 => 1 pairs (_) / B5 = 6 => 1 pairs (_) H4,I5: 8.. / H4 = 8 => 1 pairs (_) / I5 = 8 => 2 pairs (_) A3,C3: 9.. / A3 = 9 => 0 pairs (_) / C3 = 9 => 0 pairs (_) C5,A6: 9.. / C5 = 9 => 0 pairs (_) / A6 = 9 => 0 pairs (_) G5,H6: 9.. / G5 = 9 => 0 pairs (_) / H6 = 9 => 0 pairs (_) G8,H8: 9.. / G8 = 9 => 0 pairs (_) / H8 = 9 => 0 pairs (_) C5,G5: 9.. / C5 = 9 => 0 pairs (_) / G5 = 9 => 0 pairs (_) A6,H6: 9.. / A6 = 9 => 0 pairs (_) / H6 = 9 => 0 pairs (_) A3,A6: 9.. / A3 = 9 => 0 pairs (_) / A6 = 9 => 0 pairs (_) C3,C5: 9.. / C3 = 9 => 0 pairs (_) / C5 = 9 => 0 pairs (_) G5,G8: 9.. / G5 = 9 => 0 pairs (_) / G8 = 9 => 0 pairs (_) H6,H8: 9.. / H6 = 9 => 0 pairs (_) / H8 = 9 => 0 pairs (_) * DURATION: 0:00:16.393696 START: 18:15:31.734967 END: 18:15:48.128663 2020-11-26 * CP COUNT: (18) * INCONCLUSIVE -------------------------------------------------- * DEEP CONSTRAINT PAIRS (PAIR REDUCTION) B7,C7: 1.. / B7 = 1 ==> 2 pairs (_) / C7 = 1 ==> 0 pairs (*) * DURATION: 0:00:41.900573 START: 18:15:48.129953 END: 18:16:30.030526 2020-11-26 * REASONING B7,C7: 1.. * DIS # C7: 1 # B3: 3,4 => CTR => B3: 1,5,6,8 * DIS # C7: 1 + B3: 1,5,6,8 # B8: 8 => CTR => B8: 3,4 * DIS # C7: 1 + B3: 1,5,6,8 + B8: 3,4 # C3: 3,5 => CTR => C3: 4,9 * DIS # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 # A3: 4,9 => CTR => A3: 1,6 * DIS # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 + A3: 1,6 # F4: 1,3 => CTR => F4: 5,6,8 * PRF # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 + A3: 1,6 + F4: 5,6,8 => SOL * STA C7: 1 * CNT 6 HDP CHAINS / 31 HYP OPENED * DCP COUNT: (1) * SOLUTION FOUND
Header Info
1260;501;elev;21;11.30;1.20;1.20
Appendix: Full HDP Chains
A1. Deep Constraint Pair Analysis
Full list of HDP chains traversed for B7,C7: 1..:
* INC # B7: 1 # E5: 4,6 => UNS * INC # B7: 1 # E5: 2,7,8 => UNS * INC # B7: 1 # B2: 4,6 => UNS * INC # B7: 1 # B3: 4,6 => UNS * INC # B7: 1 # E6: 4,5 => UNS * INC # B7: 1 # E6: 2,3,7 => UNS * INC # B7: 1 # B2: 4,5 => UNS * INC # B7: 1 # B3: 4,5 => UNS * INC # B7: 1 => UNS * INC # C7: 1 # E4: 2,5 => UNS * INC # C7: 1 # F4: 2,5 => UNS * INC # C7: 1 # B8: 3,4 => UNS * INC # C7: 1 # B8: 8 => UNS * DIS # C7: 1 # B3: 3,4 => CTR => B3: 1,5,6,8 * INC # C7: 1 + B3: 1,5,6,8 # B8: 3,4 => UNS * DIS # C7: 1 + B3: 1,5,6,8 # B8: 8 => CTR => B8: 3,4 * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 # A4: 1,6 => UNS * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 # A4: 2 => UNS * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 # D5: 1,6 => UNS * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 # F5: 1,6 => UNS * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 # B2: 1,6 => UNS * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 # B3: 1,6 => UNS * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 # C3: 4,9 => UNS * DIS # C7: 1 + B3: 1,5,6,8 + B8: 3,4 # C3: 3,5 => CTR => C3: 4,9 * DIS # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 # A3: 4,9 => CTR => A3: 1,6 * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 + A3: 1,6 # D6: 1,5 => UNS * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 + A3: 1,6 # F6: 1,5 => UNS * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 + A3: 1,6 # B2: 1,5 => UNS * INC # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 + A3: 1,6 # B3: 1,5 => UNS * DIS # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 + A3: 1,6 # F4: 1,3 => CTR => F4: 5,6,8 * PRF # C7: 1 + B3: 1,5,6,8 + B8: 3,4 + C3: 4,9 + A3: 1,6 + F4: 5,6,8 => SOL * STA C7: 1 * CNT 31 HDP CHAINS / 31 HYP OPENED