Analysis of xx-ph-00000472-H19-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: .....1..9.......65..9.5..3...8.9...6.7.2.....1....48....3.8..5..2.......4..7..... initial

Autosolve

position: .....1..9.......65..9.5..3...8.9...6.7.2.8...1....48....3.8..5..2.......4..7..... 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 D4,E5: 1..:

* PRF # E5: 1 # A4: 3 => SOL
* STA # E5: 1 + A4: 3
* CNT   1 HDP CHAINS /   3 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..9.......65..9.5..3...8.9...6.7.2.....1....48....3.8..5..2.......4..7..... initial
.....1..9.......65..9.5..3...8.9...6.7.2.8...1....48....3.8..5..2.......4..7..... autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
D4,E5: 1.. / D4 = 1  =>  1 pairs (_) / E5 = 1  =>  4 pairs (_)
A4,C6: 2.. / A4 = 2  =>  1 pairs (_) / C6 = 2  =>  3 pairs (_)
B4,C5: 4.. / B4 = 4  =>  1 pairs (_) / C5 = 4  =>  3 pairs (_)
G4,G5: 5.. / G4 = 5  =>  5 pairs (_) / G5 = 5  =>  1 pairs (_)
F4,E6: 7.. / F4 = 7  =>  2 pairs (_) / E6 = 7  =>  3 pairs (_)
H1,I3: 8.. / H1 = 8  =>  0 pairs (_) / I3 = 8  =>  1 pairs (_)
A8,B9: 8.. / A8 = 8  =>  0 pairs (_) / B9 = 8  =>  0 pairs (_)
D2,F2: 9.. / D2 = 9  =>  0 pairs (_) / F2 = 9  =>  1 pairs (_)
A5,B6: 9.. / A5 = 9  =>  2 pairs (_) / B6 = 9  =>  2 pairs (_)
B6,H6: 9.. / B6 = 9  =>  2 pairs (_) / H6 = 9  =>  2 pairs (_)
* DURATION: 0:00:06.706413  START: 22:54:41.172110  END: 22:54:47.878523 2020-10-25
* CP COUNT: (10)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
G4,G5: 5.. / G4 = 5 ==>  5 pairs (_) / G5 = 5 ==>  1 pairs (_)
D4,E5: 1.. / D4 = 1  =>  0 pairs (X) / E5 = 1 ==>  0 pairs (*)
* DURATION: 0:00:19.009859  START: 22:54:47.879206  END: 22:55:06.889065 2020-10-25
* REASONING D4,E5: 1..
* PRF # E5: 1 # A4: 3 => SOL
* STA # E5: 1 + A4: 3
* CNT   1 HDP CHAINS /   3 HYP OPENED
* DCP COUNT: (2)
* SOLUTION FOUND

Header Info

472;H19;col;21;11.40;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for G4,G5: 5..:

* INC # G4: 5 # A1: 2,3 => UNS
* INC # G4: 5 # A2: 2,3 => UNS
* INC # G4: 5 # B1: 3,4 => UNS
* INC # G4: 5 # B2: 3,4 => UNS
* INC # G4: 5 # C1: 2,6 => UNS
* INC # G4: 5 # C1: 4,5,7 => UNS
* INC # G4: 5 # E5: 1,3 => UNS
* INC # G4: 5 # E5: 6 => UNS
* INC # G4: 5 # D8: 1,3 => UNS
* INC # G4: 5 # D8: 4,6,9 => UNS
* INC # G4: 5 # E6: 3,7 => UNS
* INC # G4: 5 # E6: 6 => UNS
* INC # G4: 5 # F2: 3,7 => UNS
* INC # G4: 5 # F2: 2,9 => UNS
* INC # G4: 5 => UNS
* INC # G5: 5 # C1: 4,6 => UNS
* INC # G5: 5 # C1: 2,5,7 => UNS
* INC # G5: 5 => UNS
* CNT  18 HDP CHAINS /  18 HYP OPENED

Full list of HDP chains traversed for D4,E5: 1..:

* INC # E5: 1 # A4: 2,5 => UNS
* PRF # E5: 1 # A4: 3 => SOL
* STA # E5: 1 + A4: 3
* CNT   2 HDP CHAINS /   3 HYP OPENED