Analysis of xx-ph-00041569-12_07-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..75.....8...6......4.....3.2..56...9.....43....1..2......78...5......9..1 initial

Autosolve

position: 98.7..6..75.....8...6......4.....3.2..56...9.....43....1..2......78...5......9..1 autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000009

List of important HDP chains detected for F5,D6: 2..:

* PRF # D6: 2 # H4: 1 => SOL
* STA # D6: 2 + H4: 1
* CNT   1 HDP CHAINS /   5 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..75.....8...6......4.....3.2..56...9.....43....1..2......78...5......9..1 initial
98.7..6..75.....8...6......4.....3.2..56...9.....43....1..2......78...5......9..1 autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
E8,F8: 1.. / E8 = 1  =>  3 pairs (_) / F8 = 1  =>  1 pairs (_)
F5,D6: 2.. / F5 = 2  =>  2 pairs (_) / D6 = 2  =>  4 pairs (_)
A5,B5: 3.. / A5 = 3  =>  3 pairs (_) / B5 = 3  =>  1 pairs (_)
G5,I5: 4.. / G5 = 4  =>  2 pairs (_) / I5 = 4  =>  2 pairs (_)
G6,I6: 5.. / G6 = 5  =>  0 pairs (_) / I6 = 5  =>  1 pairs (_)
A7,A9: 5.. / A7 = 5  =>  1 pairs (_) / A9 = 5  =>  1 pairs (_)
G3,G6: 5.. / G3 = 5  =>  1 pairs (_) / G6 = 5  =>  0 pairs (_)
E2,F2: 6.. / E2 = 6  =>  1 pairs (_) / F2 = 6  =>  1 pairs (_)
B4,H4: 6.. / B4 = 6  =>  1 pairs (_) / H4 = 6  =>  2 pairs (_)
F7,E9: 7.. / F7 = 7  =>  0 pairs (_) / E9 = 7  =>  1 pairs (_)
E3,F3: 8.. / E3 = 8  =>  1 pairs (_) / F3 = 8  =>  0 pairs (_)
C7,B8: 9.. / C7 = 9  =>  1 pairs (_) / B8 = 9  =>  2 pairs (_)
* DURATION: 0:00:07.200647  START: 00:49:48.090646  END: 00:49:55.291293 2020-12-19
* CP COUNT: (12)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
F5,D6: 2.. / F5 = 2  =>  0 pairs (X) / D6 = 2 ==>  0 pairs (*)
* DURATION: 0:00:11.544097  START: 00:49:55.291997  END: 00:50:06.836094 2020-12-19
* REASONING F5,D6: 2..
* PRF # D6: 2 # H4: 1 => SOL
* STA # D6: 2 + H4: 1
* CNT   1 HDP CHAINS /   5 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

41569;12_07;GP;23;11.30;11.30;2.60

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for F5,D6: 2..:

* INC # D6: 2 # B6: 6,7 => UNS
* INC # D6: 2 # B6: 9 => UNS
* INC # D6: 2 # H4: 6,7 => UNS
* PRF # D6: 2 # H4: 1 => SOL
* STA # D6: 2 + H4: 1
* CNT   4 HDP CHAINS /   5 HYP OPENED