Analysis of xx-ph-02236763-2019_01_07-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..5...4..3....9..7..4...6.8...7..89......4....7.9.6..4....4..2.7.........1 initial

Autosolve

position: 98.7..6..5.7.4..3..4.9..7..4...678...7..89......4....7.9.6..4....4..2.7......4..1 autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000007

List of important HDP chains detected for G2,I2: 9..:

* PRF # G2: 9 # G5: 3,5 => SOL
* STA # G2: 9 + G5: 3,5
* CNT   1 HDP CHAINS /  17 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..3....9..7..4...6.8...7..89......4....7.9.6..4....4..2.7.........1 initial
98.7..6..5.7.4..3..4.9..7..4...678...7..89......4....7.9.6..4....4..2.7......4..1 autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
H1,I1: 4.. / H1 = 4  =>  1 pairs (_) / I1 = 4  =>  0 pairs (_)
H5,I5: 4.. / H5 = 4  =>  0 pairs (_) / I5 = 4  =>  1 pairs (_)
H1,H5: 4.. / H1 = 4  =>  1 pairs (_) / H5 = 4  =>  0 pairs (_)
I1,I5: 4.. / I1 = 4  =>  0 pairs (_) / I5 = 4  =>  1 pairs (_)
F2,F3: 6.. / F2 = 6  =>  1 pairs (_) / F3 = 6  =>  2 pairs (_)
I8,H9: 6.. / I8 = 6  =>  0 pairs (_) / H9 = 6  =>  0 pairs (_)
B2,F2: 6.. / B2 = 6  =>  2 pairs (_) / F2 = 6  =>  1 pairs (_)
I5,I8: 6.. / I5 = 6  =>  0 pairs (_) / I8 = 6  =>  0 pairs (_)
A7,A9: 7.. / A7 = 7  =>  1 pairs (_) / A9 = 7  =>  0 pairs (_)
E7,E9: 7.. / E7 = 7  =>  0 pairs (_) / E9 = 7  =>  1 pairs (_)
A7,E7: 7.. / A7 = 7  =>  1 pairs (_) / E7 = 7  =>  0 pairs (_)
A9,E9: 7.. / A9 = 7  =>  0 pairs (_) / E9 = 7  =>  1 pairs (_)
A6,C6: 8.. / A6 = 8  =>  0 pairs (_) / C6 = 8  =>  0 pairs (_)
G2,I2: 9.. / G2 = 9  =>  7 pairs (_) / I2 = 9  =>  1 pairs (_)
C4,C6: 9.. / C4 = 9  =>  0 pairs (_) / C6 = 9  =>  0 pairs (_)
E8,E9: 9.. / E8 = 9  =>  1 pairs (_) / E9 = 9  =>  0 pairs (_)
* DURATION: 0:00:11.012248  START: 06:49:22.506875  END: 06:49:33.519123 2020-10-10
* CP COUNT: (16)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
G2,I2: 9.. / G2 = 9 ==>  0 pairs (*) / I2 = 9  =>  0 pairs (X)
* DURATION: 0:00:21.422002  START: 06:49:33.519805  END: 06:49:54.941807 2020-10-10
* REASONING G2,I2: 9..
* PRF # G2: 9 # G5: 3,5 => SOL
* STA # G2: 9 + G5: 3,5
* CNT   1 HDP CHAINS /  17 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

2236763;2019_01_07;PAQ;24;11.50;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for G2,I2: 9..:

* INC # G2: 9 # E1: 1,2 => UNS
* INC # G2: 9 # E3: 1,2 => UNS
* INC # G2: 9 # B2: 1,2 => UNS
* INC # G2: 9 # B2: 6 => UNS
* INC # G2: 9 # D4: 1,2 => UNS
* INC # G2: 9 # D5: 1,2 => UNS
* INC # G2: 9 # H3: 2,8 => UNS
* INC # G2: 9 # I3: 2,8 => UNS
* INC # G2: 9 # I7: 2,8 => UNS
* INC # G2: 9 # I7: 3,5 => UNS
* INC # G2: 9 # I7: 3,5 => UNS
* INC # G2: 9 # G9: 3,5 => UNS
* INC # G2: 9 # B8: 3,5 => UNS
* INC # G2: 9 # D8: 3,5 => UNS
* INC # G2: 9 # E8: 3,5 => UNS
* PRF # G2: 9 # G5: 3,5 => SOL
* STA # G2: 9 + G5: 3,5
* CNT  16 HDP CHAINS /  17 HYP OPENED