Analysis of xx-ph-01270027-13_12-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.76.5..7..8...6...6..5...67...43....957..8..........2.......4..745..9.......1.. initial

Autosolve

position: 98.76.5..7..8...6...6..5...67...43....957..8..........2.......4..745..9.......1.. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000009

List of important HDP chains detected for C1,H1: 4..:

* PRF # C1: 4 # H3: 1,3 => SOL
* STA # C1: 4 + H3: 1,3
* CNT   1 HDP CHAINS /   7 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

98.76.5..7..8...6...6..5...67...43....957..8..........2.......4..745..9.......1.. initial
98.76.5..7..8...6...6..5...67...43....957..8..........2.......4..745..9.......1.. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
E2,E3: 4.. / E2 = 4  =>  1 pairs (_) / E3 = 4  =>  1 pairs (_)
C1,H1: 4.. / C1 = 4  =>  1 pairs (_) / H1 = 4  =>  1 pairs (_)
B2,C2: 5.. / B2 = 5  =>  0 pairs (_) / C2 = 5  =>  0 pairs (_)
A6,A9: 5.. / A6 = 5  =>  0 pairs (_) / A9 = 5  =>  1 pairs (_)
F7,F9: 7.. / F7 = 7  =>  2 pairs (_) / F9 = 7  =>  0 pairs (_)
G3,I3: 8.. / G3 = 8  =>  2 pairs (_) / I3 = 8  =>  0 pairs (_)
C4,E4: 8.. / C4 = 8  =>  0 pairs (_) / E4 = 8  =>  0 pairs (_)
B7,B9: 9.. / B7 = 9  =>  0 pairs (_) / B9 = 9  =>  0 pairs (_)
* DURATION: 0:00:05.709711  START: 18:10:10.389736  END: 18:10:16.099447 2020-10-23
* CP COUNT: (8)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
G3,I3: 8.. / G3 = 8 ==>  2 pairs (_) / I3 = 8 ==>  0 pairs (_)
F7,F9: 7.. / F7 = 7 ==>  2 pairs (_) / F9 = 7 ==>  0 pairs (_)
C1,H1: 4.. / C1 = 4 ==>  0 pairs (*) / H1 = 4  =>  0 pairs (X)
* DURATION: 0:00:20.593447  START: 18:10:16.100079  END: 18:10:36.693526 2020-10-23
* REASONING C1,H1: 4..
* PRF # C1: 4 # H3: 1,3 => SOL
* STA # C1: 4 + H3: 1,3
* CNT   1 HDP CHAINS /   7 HYP OPENED
* DCP COUNT: (3)
* SOLUTION FOUND

Header Info

1270027;13_12;GP;25;11.40;11.40;7.60

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for G3,I3: 8..:

* INC # G3: 8 # I9: 6,7 => UNS
* INC # G3: 8 # I9: 2,3,5,8 => UNS
* INC # G3: 8 # F7: 6,7 => UNS
* INC # G3: 8 # F7: 1,3,8,9 => UNS
* INC # G3: 8 # G6: 6,7 => UNS
* INC # G3: 8 # G6: 2,4,9 => UNS
* INC # G3: 8 # I8: 2,6 => UNS
* INC # G3: 8 # I9: 2,6 => UNS
* INC # G3: 8 # F8: 2,6 => UNS
* INC # G3: 8 # F8: 1,3,8 => UNS
* INC # G3: 8 # G5: 2,6 => UNS
* INC # G3: 8 # G6: 2,6 => UNS
* INC # G3: 8 => UNS
* INC # I3: 8 => UNS
* CNT  14 HDP CHAINS /  14 HYP OPENED

Full list of HDP chains traversed for F7,F9: 7..:

* INC # F7: 7 # G8: 6,8 => UNS
* INC # F7: 7 # I8: 6,8 => UNS
* INC # F7: 7 # I9: 6,8 => UNS
* INC # F7: 7 # H9: 3,5 => UNS
* INC # F7: 7 # I9: 3,5 => UNS
* INC # F7: 7 # B7: 3,5 => UNS
* INC # F7: 7 # C7: 3,5 => UNS
* INC # F7: 7 => UNS
* INC # F9: 7 => UNS
* CNT   9 HDP CHAINS /   9 HYP OPENED

Full list of HDP chains traversed for C1,H1: 4..:

* INC # C1: 4 # B2: 1,3 => UNS
* INC # C1: 4 # C2: 1,3 => UNS
* INC # C1: 4 # B3: 1,3 => UNS
* INC # C1: 4 # D3: 1,3 => UNS
* INC # C1: 4 # E3: 1,3 => UNS
* PRF # C1: 4 # H3: 1,3 => SOL
* STA # C1: 4 + H3: 1,3
* CNT   6 HDP CHAINS /   7 HYP OPENED