Analysis of xx-ph-00000789-957-base.sdk
Contents
Original Sudoku
level: deep
position: .2.4..7.......9...6.9.....1..5..8....3..4.1..9.......6.1.7...2.....2.3.......5..8 initial
Autosolve
position: .2.4..7.......9...6.9.....1..5..8....3..4.1..9.......6.1.7...2.....2.3.......5..8 autosolve
Pair Reduction Variants
Deep Constraint Pair Analysis
Time used: 0:00:00.000009
List of important HDP chains detected for B4,C5: 6..:
* DIS # C5: 6 # A4: 4,7 => CTR => A4: 1,2 * DIS # C5: 6 + A4: 1,2 # G9: 6,9 => CTR => G9: 4 * DIS # C5: 6 + A4: 1,2 + G9: 4 # H9: 6,9 => CTR => H9: 1,7 * DIS # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 # C6: 4,7,8 => CTR => C6: 1,2 * PRF # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 + C6: 1,2 # E9: 6,9 => SOL * STA # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 + C6: 1,2 + E9: 6,9 * CNT 5 HDP CHAINS / 25 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..7.......9...6.9.....1..5..8....3..4.1..9.......6.1.7...2.....2.3.......5..8 | initial |
| .2.4..7.......9...6.9.....1..5..8....3..4.1..9.......6.1.7...2.....2.3.......5..8 | autosolve |
Classification
level: deep
Pairing Analysis
-------------------------------------------------- * CONSTRAINT PAIRS (AUTO SOLVE) A4,C6: 1.. / A4 = 1 => 0 pairs (_) / C6 = 1 => 1 pairs (_) H8,H9: 1.. / H8 = 1 => 1 pairs (_) / H9 = 1 => 0 pairs (_) A9,C9: 2.. / A9 = 2 => 1 pairs (_) / C9 = 2 => 0 pairs (_) F7,F8: 4.. / F7 = 4 => 2 pairs (_) / F8 = 4 => 1 pairs (_) B4,C5: 6.. / B4 = 6 => 0 pairs (_) / C5 = 6 => 4 pairs (_) E7,D8: 8.. / E7 = 8 => 1 pairs (_) / D8 = 8 => 0 pairs (_) H1,I1: 9.. / H1 = 9 => 1 pairs (_) / I1 = 9 => 1 pairs (_) B8,B9: 9.. / B8 = 9 => 0 pairs (_) / B9 = 9 => 3 pairs (_) * DURATION: 0:00:05.277949 START: 05:08:45.287290 END: 05:08:50.565239 2020-11-22 * CP COUNT: (8) * INCONCLUSIVE -------------------------------------------------- * DEEP CONSTRAINT PAIRS (PAIR REDUCTION) B4,C5: 6.. / B4 = 6 => 0 pairs (X) / C5 = 6 ==> 0 pairs (*) * DURATION: 0:00:22.898797 START: 05:08:50.566181 END: 05:09:13.464978 2020-11-22 * REASONING B4,C5: 6.. * DIS # C5: 6 # A4: 4,7 => CTR => A4: 1,2 * DIS # C5: 6 + A4: 1,2 # G9: 6,9 => CTR => G9: 4 * DIS # C5: 6 + A4: 1,2 + G9: 4 # H9: 6,9 => CTR => H9: 1,7 * DIS # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 # C6: 4,7,8 => CTR => C6: 1,2 * PRF # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 + C6: 1,2 # E9: 6,9 => SOL * STA # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 + C6: 1,2 + E9: 6,9 * CNT 5 HDP CHAINS / 25 HYP OPENED * DCP COUNT: (1) * SOLUTION FOUND
Header Info
789;957;elev;21;11.30;11.30;10.00
Appendix: Full HDP Chains
A1. Deep Constraint Pair Analysis
Full list of HDP chains traversed for B4,C5: 6..:
* DIS # C5: 6 # A4: 4,7 => CTR => A4: 1,2 * INC # C5: 6 + A4: 1,2 # B6: 4,7 => UNS * INC # C5: 6 + A4: 1,2 # C6: 4,7 => UNS * INC # C5: 6 + A4: 1,2 # H4: 4,7 => UNS * INC # C5: 6 + A4: 1,2 # I4: 4,7 => UNS * INC # C5: 6 + A4: 1,2 # B2: 4,7 => UNS * INC # C5: 6 + A4: 1,2 # B3: 4,7 => UNS * INC # C5: 6 + A4: 1,2 # F6: 2,7 => UNS * INC # C5: 6 + A4: 1,2 # F6: 1,3 => UNS * INC # C5: 6 + A4: 1,2 # A5: 2,7 => UNS * INC # C5: 6 + A4: 1,2 # I5: 2,7 => UNS * INC # C5: 6 + A4: 1,2 # F3: 2,7 => UNS * INC # C5: 6 + A4: 1,2 # F3: 3 => UNS * INC # C5: 6 + A4: 1,2 # D8: 6,9 => UNS * INC # C5: 6 + A4: 1,2 # H8: 6,9 => UNS * INC # C5: 6 + A4: 1,2 # D9: 6,9 => UNS * INC # C5: 6 + A4: 1,2 # E9: 6,9 => UNS * DIS # C5: 6 + A4: 1,2 # G9: 6,9 => CTR => G9: 4 * DIS # C5: 6 + A4: 1,2 + G9: 4 # H9: 6,9 => CTR => H9: 1,7 * INC # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 # D9: 6,9 => UNS * INC # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 # E9: 6,9 => UNS * INC # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 # C6: 1,2 => UNS * DIS # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 # C6: 4,7,8 => CTR => C6: 1,2 * PRF # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 + C6: 1,2 # E9: 6,9 => SOL * STA # C5: 6 + A4: 1,2 + G9: 4 + H9: 1,7 + C6: 1,2 + E9: 6,9 * CNT 24 HDP CHAINS / 25 HYP OPENED