Analysis of xx-ph-00001741-H339-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7.....6...5......4..93...7..6......9..42.....8...5..4....1....1....29.....1.3. initial

Autosolve

position: 98.7.....6...5......4..93...7..6......9..42.....8...5..4....1....1....29.9...1.3. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000007

List of important HDP chains detected for F1,D3: 6..:

* PRF # F1: 6 # E3: 1,2 => SOL
* STA # F1: 6 + E3: 1,2
* CNT   1 HDP CHAINS /   4 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

98.7.....6...5......4..93...7..6......9..42.....8...5..4....1....1....29.....1.3. initial
98.7.....6...5......4..93...7..6......9..42.....8...5..4....1....1....29.9...1.3. autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
E1,D2: 4.. / E1 = 4  =>  4 pairs (_) / D2 = 4  =>  0 pairs (_)
A4,A6: 4.. / A4 = 4  =>  2 pairs (_) / A6 = 4  =>  0 pairs (_)
F1,D3: 6.. / F1 = 6  =>  3 pairs (_) / D3 = 6  =>  1 pairs (_)
C2,A3: 7.. / C2 = 7  =>  0 pairs (_) / A3 = 7  =>  1 pairs (_)
F2,E3: 8.. / F2 = 8  =>  1 pairs (_) / E3 = 8  =>  1 pairs (_)
G2,H2: 9.. / G2 = 9  =>  2 pairs (_) / H2 = 9  =>  0 pairs (_)
D4,E6: 9.. / D4 = 9  =>  1 pairs (_) / E6 = 9  =>  0 pairs (_)
D7,E7: 9.. / D7 = 9  =>  0 pairs (_) / E7 = 9  =>  1 pairs (_)
E6,G6: 9.. / E6 = 9  =>  0 pairs (_) / G6 = 9  =>  1 pairs (_)
D4,D7: 9.. / D4 = 9  =>  1 pairs (_) / D7 = 9  =>  0 pairs (_)
E6,E7: 9.. / E6 = 9  =>  0 pairs (_) / E7 = 9  =>  1 pairs (_)
H2,H4: 9.. / H2 = 9  =>  0 pairs (_) / H4 = 9  =>  2 pairs (_)
* DURATION: 0:00:07.319694  START: 23:08:26.216819  END: 23:08:33.536513 2020-11-30
* CP COUNT: (12)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
E1,D2: 4.. / E1 = 4 ==>  4 pairs (_) / D2 = 4 ==>  0 pairs (_)
F1,D3: 6.. / F1 = 6 ==>  0 pairs (*) / D3 = 6  =>  0 pairs (X)
* DURATION: 0:00:16.160754  START: 23:08:33.537102  END: 23:08:49.697856 2020-11-30
* REASONING F1,D3: 6..
* PRF # F1: 6 # E3: 1,2 => SOL
* STA # F1: 6 + E3: 1,2
* CNT   1 HDP CHAINS /   4 HYP OPENED
* DCP COUNT: (2)
* SOLUTION FOUND

Header Info

1741;H339;GP;22;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for E1,D2: 4..:

* INC # E1: 4 # I1: 5,6 => UNS
* INC # E1: 4 # I3: 5,6 => UNS
* INC # E1: 4 # G8: 5,6 => UNS
* INC # E1: 4 # G9: 5,6 => UNS
* INC # E1: 4 # I1: 1,6 => UNS
* INC # E1: 4 # I1: 2,5 => UNS
* INC # E1: 4 # H5: 1,6 => UNS
* INC # E1: 4 # H5: 7,8 => UNS
* INC # E1: 4 # G2: 4,9 => UNS
* INC # E1: 4 # G2: 7,8 => UNS
* INC # E1: 4 # G4: 4,9 => UNS
* INC # E1: 4 # G6: 4,9 => UNS
* INC # E1: 4 => UNS
* INC # D2: 4 => UNS
* CNT  14 HDP CHAINS /  14 HYP OPENED

Full list of HDP chains traversed for F1,D3: 6..:

* INC # F1: 6 # E1: 1,2 => UNS
* INC # F1: 6 # D2: 1,2 => UNS
* PRF # F1: 6 # E3: 1,2 => SOL
* STA # F1: 6 + E3: 1,2
* CNT   3 HDP CHAINS /   4 HYP OPENED