Analysis of xx-ph-00032579-2012_03_13-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..5...4......3..8.7.3....9.5...72..9.......4..1.3...7.8....4....6....1.2.. initial

Autosolve

position: 98.7..6..57..4......3..8.7.3....9.5...72..9.......4..1.3...7.8....4....6....1.2.. 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 I4,I9: 7..:

* PRF # I4: 7 # I5: 4 => SOL
* STA # I4: 7 + I5: 4
* CNT   1 HDP CHAINS /  15 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..8.7.3....9.5...72..9.......4..1.3...7.8....4....6....1.2.. initial
98.7..6..57..4......3..8.7.3....9.5...72..9.......4..1.3...7.8....4....6....1.2.. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
D4,F5: 1.. / D4 = 1  =>  0 pairs (_) / F5 = 1  =>  1 pairs (_)
I4,H6: 2.. / I4 = 2  =>  1 pairs (_) / H6 = 2  =>  1 pairs (_)
H5,H6: 6.. / H5 = 6  =>  1 pairs (_) / H6 = 6  =>  2 pairs (_)
E4,E6: 7.. / E4 = 7  =>  1 pairs (_) / E6 = 7  =>  2 pairs (_)
A8,A9: 7.. / A8 = 7  =>  0 pairs (_) / A9 = 7  =>  4 pairs (_)
G8,I9: 7.. / G8 = 7  =>  4 pairs (_) / I9 = 7  =>  0 pairs (_)
E6,G6: 7.. / E6 = 7  =>  2 pairs (_) / G6 = 7  =>  1 pairs (_)
A8,G8: 7.. / A8 = 7  =>  0 pairs (_) / G8 = 7  =>  4 pairs (_)
A9,I9: 7.. / A9 = 7  =>  4 pairs (_) / I9 = 7  =>  0 pairs (_)
I4,I9: 7.. / I4 = 7  =>  4 pairs (_) / I9 = 7  =>  0 pairs (_)
G2,I2: 8.. / G2 = 8  =>  2 pairs (_) / I2 = 8  =>  2 pairs (_)
E8,D9: 8.. / E8 = 8  =>  1 pairs (_) / D9 = 8  =>  1 pairs (_)
B6,C6: 9.. / B6 = 9  =>  0 pairs (_) / C6 = 9  =>  0 pairs (_)
* DURATION: 0:00:07.971659  START: 17:29:50.065897  END: 17:29:58.037556 2020-12-11
* CP COUNT: (13)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
I4,I9: 7.. / I4 = 7 ==>  0 pairs (*) / I9 = 7  =>  0 pairs (X)
* DURATION: 0:00:15.235725  START: 17:29:58.038092  END: 17:30:13.273817 2020-12-11
* REASONING I4,I9: 7..
* PRF # I4: 7 # I5: 4 => SOL
* STA # I4: 7 + I5: 4
* CNT   1 HDP CHAINS /  15 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

32579;2012_03_13;GP;24;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for I4,I9: 7..:

* INC # I4: 7 # C4: 6,8 => UNS
* INC # I4: 7 # C6: 6,8 => UNS
* INC # I4: 7 # D6: 6,8 => UNS
* INC # I4: 7 # D6: 3,5 => UNS
* INC # I4: 7 # D4: 6,8 => UNS
* INC # I4: 7 # D6: 6,8 => UNS
* INC # I4: 7 # C4: 6,8 => UNS
* INC # I4: 7 # C4: 1,2,4 => UNS
* INC # I4: 7 # I5: 4,8 => UNS
* INC # I4: 7 # I5: 3 => UNS
* INC # I4: 7 # C4: 4,8 => UNS
* INC # I4: 7 # C4: 1,2,6 => UNS
* INC # I4: 7 # I5: 3,8 => UNS
* PRF # I4: 7 # I5: 4 => SOL
* STA # I4: 7 + I5: 4
* CNT  14 HDP CHAINS /  15 HYP OPENED