Analysis of zz-www.sudokuwiki.org-0338-base.sdk
Contents
Sudoku from http://www.sudokuwiki.org/Print_Weekly_Sudoku.asp?unsolvable=338
level: deep
position: .......69..6..7..8.1....4....8..6..76......5..2..4....5....9.81...1..3...3..2.... initial
Autosolve
position: .......69..6..7..8.1....4....8..6..76......5..2..4....5....9.81...1..3...3..2.... autosolve
Pair Reduction Variants
Deep Constraint Pair Analysis
Time used: 0:00:00.000011
List of important HDP chains detected for C7,G7: 2..:
* PRF # G7: 2 # G1: 1,5 => SOL * STA # G7: 2 + G1: 1,5 * CNT 1 HDP CHAINS / 2 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
| .......69..6..7..8.1....4....8..6..76......5..2..4....5....9.81...1..3...3..2.... | initial |
| .......69..6..7..8.1....4....8..6..76......5..2..4....5....9.81...1..3...3..2.... | autosolve |
Classification
level: deep
Pairing Analysis
-------------------------------------------------- * PAIRS (1) I6: 3,6 -------------------------------------------------- * CONSTRAINT PAIRS (AUTO SOLVE) A9,C9: 1.. / A9 = 1 => 2 pairs (_) / C9 = 1 => 1 pairs (_) C7,G7: 2.. / C7 = 2 => 2 pairs (_) / G7 = 2 => 6 pairs (_) D7,E7: 3.. / D7 = 3 => 2 pairs (_) / E7 = 3 => 1 pairs (_) H4,I5: 4.. / H4 = 4 => 4 pairs (_) / I5 = 4 => 3 pairs (_) B4,C6: 5.. / B4 = 5 => 2 pairs (_) / C6 = 5 => 2 pairs (_) D3,E3: 6.. / D3 = 6 => 2 pairs (_) / E3 = 6 => 2 pairs (_) G6,I6: 6.. / G6 = 6 => 4 pairs (_) / I6 = 6 => 1 pairs (_) B7,B8: 6.. / B7 = 6 => 3 pairs (_) / B8 = 6 => 2 pairs (_) G1,H3: 7.. / G1 = 7 => 3 pairs (_) / H3 = 7 => 2 pairs (_) G5,G6: 8.. / G5 = 8 => 1 pairs (_) / G6 = 8 => 1 pairs (_) B1,B8: 8.. / B1 = 8 => 1 pairs (_) / B8 = 8 => 4 pairs (_) * DURATION: 0:00:06.218390 START: 18:56:18.740638 END: 18:56:24.959028 2019-04-28 * CP COUNT: (11) * INCONCLUSIVE -------------------------------------------------- * DEEP CONSTRAINT PAIRS (PAIR REDUCTION) C7,G7: 2.. / C7 = 2 => 0 pairs (X) / G7 = 2 ==> 0 pairs (*) * DURATION: 0:00:08.710264 START: 18:56:25.537869 END: 18:56:34.248133 2019-04-28 * REASONING C7,G7: 2.. * PRF # G7: 2 # G1: 1,5 => SOL * STA # G7: 2 + G1: 1,5 * CNT 1 HDP CHAINS / 2 HYP OPENED * DCP COUNT: (1) * SOLUTION FOUND
Header Info
http://www.sudokuwiki.org/Print_Weekly_Sudoku.asp?unsolvable=338
Appendix: Full HDP Chains
A1. Deep Constraint Pair Analysis
Full list of HDP chains traversed for C7,G7: 2..:
* PRF # G7: 2 # G1: 1,5 => SOL * STA # G7: 2 + G1: 1,5 * CNT 1 HDP CHAINS / 2 HYP OPENED