Analysis of xx-ph-00000175-L12-base.sdk
Contents
Original Sudoku
level: deep
position: ....5....4....9.3..8.1....6.1.8....5.....24....756....3......2.......9...68.....7 initial
Autosolve
position: ....5....4....9.3..8.1....6.1.8....5.....24....756....3......2.......9...68.....7 autosolve
Pair Reduction Variants
Deep Constraint Pair Analysis
Time used: 0:00:00.000007
List of important HDP chains detected for B6,F6: 4..:
* DIS # F6: 4 # E3: 3,7 => CTR => E3: 2,4 * DIS # F6: 4 + E3: 2,4 # A9: 1,5 => CTR => A9: 2,9 * PRF # F6: 4 + E3: 2,4 + A9: 2,9 # D1: 2,4 => SOL * STA # F6: 4 + E3: 2,4 + A9: 2,9 + D1: 2,4 * CNT 3 HDP CHAINS / 23 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
| ....5....4....9.3..8.1....6.1.8....5.....24....756....3......2.......9...68.....7 | initial |
| ....5....4....9.3..8.1....6.1.8....5.....24....756....3......2.......9...68.....7 | autosolve |
Classification
level: deep
Pairing Analysis
-------------------------------------------------- * CONSTRAINT PAIRS (AUTO SOLVE) E5,F6: 1.. / E5 = 1 => 3 pairs (_) / F6 = 1 => 1 pairs (_) I8,G9: 3.. / I8 = 3 => 1 pairs (_) / G9 = 3 => 0 pairs (_) C4,B6: 4.. / C4 = 4 => 4 pairs (_) / B6 = 4 => 1 pairs (_) B6,F6: 4.. / B6 = 4 => 1 pairs (_) / F6 = 4 => 4 pairs (_) G7,H8: 6.. / G7 = 6 => 0 pairs (_) / H8 = 6 => 3 pairs (_) C2,D2: 6.. / C2 = 6 => 1 pairs (_) / D2 = 6 => 0 pairs (_) G4,G7: 6.. / G4 = 6 => 3 pairs (_) / G7 = 6 => 0 pairs (_) F1,E2: 8.. / F1 = 8 => 1 pairs (_) / E2 = 8 => 1 pairs (_) A5,A6: 8.. / A5 = 8 => 1 pairs (_) / A6 = 8 => 1 pairs (_) * DURATION: 0:00:07.608832 START: 03:41:30.572201 END: 03:41:38.181033 2020-09-29 * CP COUNT: (9) * INCONCLUSIVE -------------------------------------------------- * DEEP CONSTRAINT PAIRS (PAIR REDUCTION) B6,F6: 4.. / B6 = 4 => 0 pairs (X) / F6 = 4 ==> 0 pairs (*) * DURATION: 0:00:24.855188 START: 03:41:38.181867 END: 03:42:03.037055 2020-09-29 * REASONING B6,F6: 4.. * DIS # F6: 4 # E3: 3,7 => CTR => E3: 2,4 * DIS # F6: 4 + E3: 2,4 # A9: 1,5 => CTR => A9: 2,9 * PRF # F6: 4 + E3: 2,4 + A9: 2,9 # D1: 2,4 => SOL * STA # F6: 4 + E3: 2,4 + A9: 2,9 + D1: 2,4 * CNT 3 HDP CHAINS / 23 HYP OPENED * DCP COUNT: (1) * SOLUTION FOUND
Header Info
175;L12;elev;21;11.50;11.50;7.80
Appendix: Full HDP Chains
A1. Deep Constraint Pair Analysis
Full list of HDP chains traversed for B6,F6: 4..:
* INC # F6: 4 # F7: 6,8 => UNS * INC # F6: 4 # F8: 6,8 => UNS * INC # F6: 4 # D1: 3,7 => UNS * DIS # F6: 4 # E3: 3,7 => CTR => E3: 2,4 * INC # F6: 4 + E3: 2,4 # D1: 3,7 => UNS * INC # F6: 4 + E3: 2,4 # D1: 2,4,6 => UNS * INC # F6: 4 + E3: 2,4 # E4: 3,7 => UNS * INC # F6: 4 + E3: 2,4 # D5: 3,7 => UNS * INC # F6: 4 + E3: 2,4 # G4: 3,7 => UNS * INC # F6: 4 + E3: 2,4 # G4: 2,6 => UNS * INC # F6: 4 + E3: 2,4 # F7: 1,5 => UNS * INC # F6: 4 + E3: 2,4 # F8: 1,5 => UNS * DIS # F6: 4 + E3: 2,4 # A9: 1,5 => CTR => A9: 2,9 * INC # F6: 4 + E3: 2,4 + A9: 2,9 # G9: 1,5 => UNS * INC # F6: 4 + E3: 2,4 + A9: 2,9 # H9: 1,5 => UNS * INC # F6: 4 + E3: 2,4 + A9: 2,9 # F7: 1,5 => UNS * INC # F6: 4 + E3: 2,4 + A9: 2,9 # F8: 1,5 => UNS * INC # F6: 4 + E3: 2,4 + A9: 2,9 # G9: 1,5 => UNS * INC # F6: 4 + E3: 2,4 + A9: 2,9 # H9: 1,5 => UNS * INC # F6: 4 + E3: 2,4 + A9: 2,9 # F7: 6,8 => UNS * INC # F6: 4 + E3: 2,4 + A9: 2,9 # F8: 6,8 => UNS * PRF # F6: 4 + E3: 2,4 + A9: 2,9 # D1: 2,4 => SOL * STA # F6: 4 + E3: 2,4 + A9: 2,9 + D1: 2,4 * CNT 22 HDP CHAINS / 23 HYP OPENED