Analysis of xx-ph-00423049-12_12_03-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: .......12.....1.3.....2.4.5..1..3....6..4...78..9.......98......2..6...467....5.. initial

Autosolve

position: .......12.....1.3.....2.4.5..1..3....6..4...78..9.......98......2..6...467....5.. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000006

List of important HDP chains detected for D5,G5: 1..:

* DIS # G5: 1 # C6: 4,5 => CTR => C6: 2,7
* DIS # G5: 1 + C6: 2,7 # B1: 4,5 => CTR => B1: 3,8,9
* PRF # G5: 1 + C6: 2,7 + B1: 3,8,9 # B7: 4,5 => SOL
* STA # G5: 1 + C6: 2,7 + B1: 3,8,9 + B7: 4,5
* CNT   3 HDP CHAINS /   9 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

.......12.....1.3.....2.4.5..1..3....6..4...78..9.......98......2..6...467....5.. initial
.......12.....1.3.....2.4.5..1..3....6..4...78..9.......98......2..6...467....5.. autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
A3,B3: 1.. / A3 = 1  =>  2 pairs (_) / B3 = 1  =>  0 pairs (_)
D5,E6: 1.. / D5 = 1  =>  1 pairs (_) / E6 = 1  =>  4 pairs (_)
D5,G5: 1.. / D5 = 1  =>  1 pairs (_) / G5 = 1  =>  4 pairs (_)
B3,B7: 1.. / B3 = 1  =>  0 pairs (_) / B7 = 1  =>  2 pairs (_)
A2,C2: 2.. / A2 = 2  =>  0 pairs (_) / C2 = 2  =>  1 pairs (_)
H4,H6: 4.. / H4 = 4  =>  1 pairs (_) / H6 = 4  =>  1 pairs (_)
D4,F6: 6.. / D4 = 6  =>  2 pairs (_) / F6 = 6  =>  1 pairs (_)
A4,C6: 7.. / A4 = 7  =>  1 pairs (_) / C6 = 7  =>  2 pairs (_)
E4,F5: 8.. / E4 = 8  =>  2 pairs (_) / F5 = 8  =>  1 pairs (_)
C8,C9: 8.. / C8 = 8  =>  2 pairs (_) / C9 = 8  =>  2 pairs (_)
* DURATION: 0:00:06.561836  START: 12:30:27.134528  END: 12:30:33.696364 2020-12-26
* CP COUNT: (10)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
D5,G5: 1.. / D5 = 1  =>  0 pairs (X) / G5 = 1 ==>  0 pairs (*)
* DURATION: 0:00:12.527780  START: 12:30:33.696945  END: 12:30:46.224725 2020-12-26
* REASONING D5,G5: 1..
* DIS # G5: 1 # C6: 4,5 => CTR => C6: 2,7
* DIS # G5: 1 + C6: 2,7 # B1: 4,5 => CTR => B1: 3,8,9
* PRF # G5: 1 + C6: 2,7 + B1: 3,8,9 # B7: 4,5 => SOL
* STA # G5: 1 + C6: 2,7 + B1: 3,8,9 + B7: 4,5
* CNT   3 HDP CHAINS /   9 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

423049;12_12_03;dob;22;11.30;11.30;2.60

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for D5,G5: 1..:

* INC # G5: 1 # A4: 4,5 => UNS
* INC # G5: 1 # B4: 4,5 => UNS
* DIS # G5: 1 # C6: 4,5 => CTR => C6: 2,7
* INC # G5: 1 + C6: 2,7 # H6: 4,5 => UNS
* INC # G5: 1 + C6: 2,7 # H6: 2,6 => UNS
* DIS # G5: 1 + C6: 2,7 # B1: 4,5 => CTR => B1: 3,8,9
* INC # G5: 1 + C6: 2,7 + B1: 3,8,9 # B2: 4,5 => UNS
* PRF # G5: 1 + C6: 2,7 + B1: 3,8,9 # B7: 4,5 => SOL
* STA # G5: 1 + C6: 2,7 + B1: 3,8,9 + B7: 4,5
* CNT   8 HDP CHAINS /   9 HYP OPENED