Analysis of xx-colx155-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: ..1...5...2.4...6.3....7....6.28........9..2.......4.65.....1...9.8...4...7.....3 initial

Autosolve

position: ..1...5...2.4...6.3....7....6.28........9..2.......4.65.....1...9.8...4...7.....3 autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000005

List of important HDP chains detected for H1,G2: 3..:

* PRF # G2: 3 # I5: 7,8 => SOL
* STA # G2: 3 + I5: 7,8
* CNT   1 HDP CHAINS /  13 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

..1...5...2.4...6.3....7....6.28........9..2.......4.65.....1...9.8...4...7.....3 initial
..1...5...2.4...6.3....7....6.28........9..2.......4.65.....1...9.8...4...7.....3 autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
A6,C6: 2.. / A6 = 2  =>  1 pairs (_) / C6 = 2  =>  1 pairs (_)
H1,G2: 3.. / H1 = 3  =>  2 pairs (_) / G2 = 3  =>  3 pairs (_)
I1,I3: 4.. / I1 = 4  =>  1 pairs (_) / I3 = 4  =>  1 pairs (_)
F4,F5: 4.. / F4 = 4  =>  0 pairs (_) / F5 = 4  =>  1 pairs (_)
E7,E9: 4.. / E7 = 4  =>  1 pairs (_) / E9 = 4  =>  1 pairs (_)
I8,H9: 5.. / I8 = 5  =>  1 pairs (_) / H9 = 5  =>  1 pairs (_)
A1,C3: 6.. / A1 = 6  =>  3 pairs (_) / C3 = 6  =>  1 pairs (_)
D5,F5: 6.. / D5 = 6  =>  1 pairs (_) / F5 = 6  =>  0 pairs (_)
G8,G9: 6.. / G8 = 6  =>  2 pairs (_) / G9 = 6  =>  1 pairs (_)
F1,F2: 8.. / F1 = 8  =>  1 pairs (_) / F2 = 8  =>  2 pairs (_)
* DURATION: 0:00:08.322389  START: 17:24:36.054855  END: 17:24:44.377244 2017-04-29
* CP COUNT: (10)

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
H1,G2: 3.. / H1 = 3  =>  0 pairs (X) / G2 = 3 ==>  0 pairs (*)
* DURATION: 0:00:18.178914  START: 17:24:44.377673  END: 17:25:02.556587 2017-04-29
* REASONING H1,G2: 3..
* PRF # G2: 3 # I5: 7,8 => SOL
* STA # G2: 3 + I5: 7,8
* CNT   1 HDP CHAINS /  13 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

colx155,coloin,95640,98064,11.7,11.7,2.6,2867,1809

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for H1,G2: 3..:

* INC # G2: 3 # F2: 1,5 => UNS
* INC # G2: 3 # D3: 1,5 => UNS
* INC # G2: 3 # E3: 1,5 => UNS
* INC # G2: 3 # E6: 1,5 => UNS
* INC # G2: 3 # E8: 1,5 => UNS
* INC # G2: 3 # E9: 1,5 => UNS
* INC # G2: 3 # H4: 7,9 => UNS
* INC # G2: 3 # I4: 7,9 => UNS
* INC # G2: 3 # H6: 7,9 => UNS
* INC # G2: 3 # A4: 7,9 => UNS
* INC # G2: 3 # A4: 1,4 => UNS
* PRF # G2: 3 # I5: 7,8 => SOL
* STA # G2: 3 + I5: 7,8
* CNT  12 HDP CHAINS /  13 HYP OPENED