Analysis of xx-ph-00322139-12_12_03-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: ........1.....2..3..213..4...1.5...4.5.6..1..27.....5...53..4...2...8...9....6..2 initial

Autosolve

position: ......2.1.....2..3..213..4...125...4.5.6..12.27.....5...532.4...2...8...9....6..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 D9,G9: 5..:

* DIS # G9: 5 # F5: 7,9 => CTR => F5: 3,4
* DIS # G9: 5 + F5: 3,4 # E5: 8,9 => CTR => E5: 7
* PRF # G9: 5 + F5: 3,4 + E5: 7 # E6: 1 => SOL
* STA # G9: 5 + F5: 3,4 + E5: 7 + E6: 1
* CNT   3 HDP CHAINS /  22 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.....2..3..213..4...1.5...4.5.6..1..27.....5...53..4...2...8...9....6..2 initial
......2.1.....2..3..213..4...125...4.5.6..12.27.....5...532.4...2...8...9....6..2 autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
A2,B2: 1.. / A2 = 1  =>  0 pairs (_) / B2 = 1  =>  1 pairs (_)
E6,F6: 1.. / E6 = 1  =>  2 pairs (_) / F6 = 1  =>  1 pairs (_)
F6,F7: 1.. / F6 = 1  =>  1 pairs (_) / F7 = 1  =>  2 pairs (_)
F1,F3: 5.. / F1 = 5  =>  2 pairs (_) / F3 = 5  =>  0 pairs (_)
D8,D9: 5.. / D8 = 5  =>  4 pairs (_) / D9 = 5  =>  0 pairs (_)
A1,F1: 5.. / A1 = 5  =>  0 pairs (_) / F1 = 5  =>  2 pairs (_)
A2,G2: 5.. / A2 = 5  =>  3 pairs (_) / G2 = 5  =>  0 pairs (_)
D9,G9: 5.. / D9 = 5  =>  0 pairs (_) / G9 = 5  =>  4 pairs (_)
I3,I8: 5.. / I3 = 5  =>  3 pairs (_) / I8 = 5  =>  0 pairs (_)
E1,E2: 6.. / E1 = 6  =>  0 pairs (_) / E2 = 6  =>  0 pairs (_)
* DURATION: 0:00:07.010389  START: 14:52:50.405351  END: 14:52:57.415740 2020-10-28
* CP COUNT: (10)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
D9,G9: 5.. / D9 = 5  =>  0 pairs (X) / G9 = 5 ==>  0 pairs (*)
* DURATION: 0:00:19.735207  START: 14:52:57.416297  END: 14:53:17.151504 2020-10-28
* REASONING D9,G9: 5..
* DIS # G9: 5 # F5: 7,9 => CTR => F5: 3,4
* DIS # G9: 5 + F5: 3,4 # E5: 8,9 => CTR => E5: 7
* PRF # G9: 5 + F5: 3,4 + E5: 7 # E6: 1 => SOL
* STA # G9: 5 + F5: 3,4 + E5: 7 + E6: 1
* CNT   3 HDP CHAINS /  22 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

322139;12_12_03;dob;24;11.40;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for D9,G9: 5..:

* INC # G9: 5 # D1: 7,9 => UNS
* INC # G9: 5 # E1: 7,9 => UNS
* INC # G9: 5 # D2: 7,9 => UNS
* INC # G9: 5 # E2: 7,9 => UNS
* INC # G9: 5 # G3: 7,9 => UNS
* INC # G9: 5 # G3: 6,8 => UNS
* INC # G9: 5 # F4: 7,9 => UNS
* DIS # G9: 5 # F5: 7,9 => CTR => F5: 3,4
* INC # G9: 5 + F5: 3,4 # F7: 7,9 => UNS
* INC # G9: 5 + F5: 3,4 # D1: 7,9 => UNS
* INC # G9: 5 + F5: 3,4 # E1: 7,9 => UNS
* INC # G9: 5 + F5: 3,4 # D2: 7,9 => UNS
* INC # G9: 5 + F5: 3,4 # E2: 7,9 => UNS
* INC # G9: 5 + F5: 3,4 # G3: 7,9 => UNS
* INC # G9: 5 + F5: 3,4 # G3: 6,8 => UNS
* INC # G9: 5 + F5: 3,4 # F4: 7,9 => UNS
* INC # G9: 5 + F5: 3,4 # F7: 7,9 => UNS
* DIS # G9: 5 + F5: 3,4 # E5: 8,9 => CTR => E5: 7
* INC # G9: 5 + F5: 3,4 + E5: 7 # E6: 8,9 => UNS
* INC # G9: 5 + F5: 3,4 + E5: 7 # E6: 8,9 => UNS
* PRF # G9: 5 + F5: 3,4 + E5: 7 # E6: 1 => SOL
* STA # G9: 5 + F5: 3,4 + E5: 7 + E6: 1
* CNT  21 HDP CHAINS /  22 HYP OPENED