Analysis of xx-cola093_30_1_15_2_260K_BBr3c1246_r4c8_r7c9_BBr12c7_r4c8_r7c9_21_5_170K-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: .2.....83.......95..8.5......6.3...9.7...2...1..4.......9.6..3....7.....4....16.. initial

Autosolve

position: .2.....83.......95..8.5......6.3...9.7...2...1..4.......9.6..3....7..9..4....16.. 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 F8,D9: 3..:

* PRF # D9: 3 # A8: 2,8 => SOL
* STA # D9: 3 + A8: 2,8
* 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

.2.....83.......95..8.5......6.3...9.7...2...1..4.......9.6..3....7.....4....16.. initial
.2.....83.......95..8.5......6.3...9.7...2...1..4.......9.6..3....7..9..4....16.. autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
A4,C6: 2.. / A4 = 2  =>  1 pairs (_) / C6 = 2  =>  1 pairs (_)
G5,G6: 3.. / G5 = 3  =>  1 pairs (_) / G6 = 3  =>  1 pairs (_)
F8,D9: 3.. / F8 = 3  =>  0 pairs (_) / D9 = 3  =>  7 pairs (_)
B4,C5: 4.. / B4 = 4  =>  1 pairs (_) / C5 = 4  =>  1 pairs (_)
A1,C1: 5.. / A1 = 5  =>  3 pairs (_) / C1 = 5  =>  2 pairs (_)
H3,I3: 6.. / H3 = 6  =>  0 pairs (_) / I3 = 6  =>  0 pairs (_)
D5,F6: 6.. / D5 = 6  =>  1 pairs (_) / F6 = 6  =>  1 pairs (_)
A8,B8: 6.. / A8 = 6  =>  1 pairs (_) / B8 = 6  =>  0 pairs (_)
B2,B8: 6.. / B2 = 6  =>  1 pairs (_) / B8 = 6  =>  0 pairs (_)
A7,C9: 7.. / A7 = 7  =>  2 pairs (_) / C9 = 7  =>  2 pairs (_)
A5,B6: 9.. / A5 = 9  =>  2 pairs (_) / B6 = 9  =>  2 pairs (_)
D9,E9: 9.. / D9 = 9  =>  3 pairs (_) / E9 = 9  =>  6 pairs (_)
B3,B6: 9.. / B3 = 9  =>  2 pairs (_) / B6 = 9  =>  2 pairs (_)
* DURATION: 0:00:11.503947  START: 17:06:45.571193  END: 17:06:57.075140 2017-04-29
* CP COUNT: (13)

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
F8,D9: 3.. / F8 = 3  =>  0 pairs (X) / D9 = 3 ==>  0 pairs (*)
* DURATION: 0:00:17.608224  START: 17:06:57.075519  END: 17:07:14.683743 2017-04-29
* REASONING F8,D9: 3..
* PRF # D9: 3 # A8: 2,8 => SOL
* STA # D9: 3 + A8: 2,8
* CNT   1 HDP CHAINS /   5 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

cola093 (30.1) 15.2 260K BBr3c1246 r4c8 r7c9 BBr12c7 r4c8 r7c9 21.5 170K

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for F8,D9: 3..:

* INC # D9: 3 # G4: 2,8 => UNS
* INC # D9: 3 # G4: 1,4,7 => UNS
* INC # D9: 3 # A7: 2,8 => UNS
* PRF # D9: 3 # A8: 2,8 => SOL
* STA # D9: 3 + A8: 2,8
* CNT   4 HDP CHAINS /   5 HYP OPENED