Analysis of xx-ph-01115396-13_09-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7.....7.....6....5.4....6..8..3...9..6..2...1..2....7.6..9......2...4.....1.5. initial

Autosolve

position: 98.7.....7.....6....5.4....6..8..3...9..6..2...1..2....7.6..9......2...4.....1.5. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000008

List of important HDP chains detected for B3,F3: 6..:

* PRF # F3: 6 # D2: 3,5 => SOL
* STA # F3: 6 + D2: 3,5
* CNT   1 HDP CHAINS /   4 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.....7.....6....5.4....6..8..3...9..6..2...1..2....7.6..9......2...4.....1.5. initial
98.7.....7.....6....5.4....6..8..3...9..6..2...1..2....7.6..9......2...4.....1.5. autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
E4,D5: 1.. / E4 = 1  =>  3 pairs (_) / D5 = 1  =>  0 pairs (_)
D2,D3: 2.. / D2 = 2  =>  1 pairs (_) / D3 = 2  =>  1 pairs (_)
B4,C4: 2.. / B4 = 2  =>  1 pairs (_) / C4 = 2  =>  2 pairs (_)
F7,D9: 4.. / F7 = 4  =>  1 pairs (_) / D9 = 4  =>  0 pairs (_)
C1,B3: 6.. / C1 = 6  =>  1 pairs (_) / B3 = 6  =>  2 pairs (_)
F1,F3: 6.. / F1 = 6  =>  2 pairs (_) / F3 = 6  =>  1 pairs (_)
H6,I6: 6.. / H6 = 6  =>  0 pairs (_) / I6 = 6  =>  0 pairs (_)
H8,I9: 6.. / H8 = 6  =>  0 pairs (_) / I9 = 6  =>  0 pairs (_)
C1,F1: 6.. / C1 = 6  =>  1 pairs (_) / F1 = 6  =>  2 pairs (_)
B3,F3: 6.. / B3 = 6  =>  2 pairs (_) / F3 = 6  =>  1 pairs (_)
H6,H8: 6.. / H6 = 6  =>  0 pairs (_) / H8 = 6  =>  0 pairs (_)
I6,I9: 6.. / I6 = 6  =>  0 pairs (_) / I9 = 6  =>  0 pairs (_)
C4,C5: 7.. / C4 = 7  =>  0 pairs (_) / C5 = 7  =>  1 pairs (_)
F8,E9: 7.. / F8 = 7  =>  1 pairs (_) / E9 = 7  =>  1 pairs (_)
C8,C9: 9.. / C8 = 9  =>  1 pairs (_) / C9 = 9  =>  1 pairs (_)
* DURATION: 0:00:09.687980  START: 06:25:14.329596  END: 06:25:24.017576 2020-10-23
* CP COUNT: (15)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
E4,D5: 1.. / E4 = 1 ==>  3 pairs (_) / D5 = 1 ==>  0 pairs (_)
B3,F3: 6.. / B3 = 6 ==>  2 pairs (_) / F3 = 6 ==>  0 pairs (*)
* DURATION: 0:00:19.743151  START: 06:25:24.018334  END: 06:25:43.761485 2020-10-23
* REASONING B3,F3: 6..
* PRF # F3: 6 # D2: 3,5 => SOL
* STA # F3: 6 + D2: 3,5
* CNT   1 HDP CHAINS /   4 HYP OPENED
* DCP COUNT: (2)
* SOLUTION FOUND

Header Info

1115396;13_09;GP;22;11.40;11.40;9.80

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for E4,D5: 1..:

* INC # E4: 1 # F1: 3,5 => UNS
* INC # E4: 1 # E2: 3,5 => UNS
* INC # E4: 1 # F2: 3,5 => UNS
* INC # E4: 1 # I1: 3,5 => UNS
* INC # E4: 1 # I1: 1,2 => UNS
* INC # E4: 1 # E6: 3,5 => UNS
* INC # E4: 1 # E7: 3,5 => UNS
* INC # E4: 1 # B2: 1,2 => UNS
* INC # E4: 1 # B2: 3,4 => UNS
* INC # E4: 1 # A3: 1,2 => UNS
* INC # E4: 1 # B3: 1,2 => UNS
* INC # E4: 1 => UNS
* INC # D5: 1 => UNS
* CNT  13 HDP CHAINS /  13 HYP OPENED

Full list of HDP chains traversed for B3,F3: 6..:

* INC # B3: 6 => UNS
* INC # F3: 6 # E1: 3,5 => UNS
* PRF # F3: 6 # D2: 3,5 => SOL
* STA # F3: 6 + D2: 3,5
* CNT   3 HDP CHAINS /   4 HYP OPENED