Analysis of xx-ph-00052507-12_10-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7.....7.6...8.........5..4..3...2..89..........4.1...96..5......1...3.....2.4. initial

Autosolve

position: 98.7.....7.6...8.........5..4..3...2..89......9...4.1...96..5......1...3.....2.4. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000017

List of important HDP chains detected for G5,I5: 4..:

* DIS # I5: 4 # G1: 1,6 => CTR => G1: 2,3,4
* PRF # I5: 4 + G1: 2,3,4 # G3: 1,6 => SOL
* STA # I5: 4 + G1: 2,3,4 + G3: 1,6
* CNT   2 HDP CHAINS /   3 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.....7.6...8.........5..4..3...2..89..........4.1...96..5......1...3.....2.4. initial
98.7.....7.6...8.........5..4..3...2..89......9...4.1...96..5......1...3.....2.4. autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
F7,D9: 3.. / F7 = 3  =>  1 pairs (_) / D9 = 3  =>  1 pairs (_)
G5,I5: 4.. / G5 = 4  =>  0 pairs (_) / I5 = 4  =>  5 pairs (_)
E7,D8: 4.. / E7 = 4  =>  1 pairs (_) / D8 = 4  =>  1 pairs (_)
A7,E7: 4.. / A7 = 4  =>  1 pairs (_) / E7 = 4  =>  1 pairs (_)
C1,B2: 5.. / C1 = 5  =>  1 pairs (_) / B2 = 5  =>  0 pairs (_)
I5,I6: 5.. / I5 = 5  =>  0 pairs (_) / I6 = 5  =>  3 pairs (_)
G3,I3: 7.. / G3 = 7  =>  2 pairs (_) / I3 = 7  =>  1 pairs (_)
H4,I6: 8.. / H4 = 8  =>  2 pairs (_) / I6 = 8  =>  2 pairs (_)
G4,H4: 9.. / G4 = 9  =>  0 pairs (_) / H4 = 9  =>  4 pairs (_)
F8,E9: 9.. / F8 = 9  =>  0 pairs (_) / E9 = 9  =>  1 pairs (_)
* DURATION: 0:00:06.568635  START: 13:18:21.395199  END: 13:18:27.963834 2020-12-20
* CP COUNT: (10)
* INCONCLUSIVE

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* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
G5,I5: 4.. / G5 = 4  =>  0 pairs (X) / I5 = 4 ==>  0 pairs (*)
* DURATION: 0:00:09.713833  START: 13:18:27.964800  END: 13:18:37.678633 2020-12-20
* REASONING G5,I5: 4..
* DIS # I5: 4 # G1: 1,6 => CTR => G1: 2,3,4
* PRF # I5: 4 + G1: 2,3,4 # G3: 1,6 => SOL
* STA # I5: 4 + G1: 2,3,4 + G3: 1,6
* CNT   2 HDP CHAINS /   3 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

52507;12_10;GP;21;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for G5,I5: 4..:

* DIS # I5: 4 # G1: 1,6 => CTR => G1: 2,3,4
* PRF # I5: 4 + G1: 2,3,4 # G3: 1,6 => SOL
* STA # I5: 4 + G1: 2,3,4 + G3: 1,6
* CNT   2 HDP CHAINS /   3 HYP OPENED