Analysis of xx-ph-02236567-2018_12_25-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..7..5..9....4.8....6..9..5....3.5........7..2.1....7..5..7.9.1.....1....6 initial

Autosolve

position: 98.7..6..7..5..9....4.89...6..9..5....3.5..6.....7..2.1....7..5..7.9.1.....1....6 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 H7,H9: 9..:

* PRF # H9: 9 # D3: 2,3 => SOL
* STA # H9: 9 + D3: 2,3
* CNT   1 HDP CHAINS /   7 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..7..5..9....4.8....6..9..5....3.5........7..2.1....7..5..7.9.1.....1....6 initial
98.7..6..7..5..9....4.89...6..9..5....3.5..6.....7..2.1....7..5..7.9.1.....1....6 autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
H1,H3: 5.. / H1 = 5  =>  1 pairs (_) / H3 = 5  =>  1 pairs (_)
F8,F9: 5.. / F8 = 5  =>  0 pairs (_) / F9 = 5  =>  0 pairs (_)
C1,H1: 5.. / C1 = 5  =>  1 pairs (_) / H1 = 5  =>  1 pairs (_)
D6,F6: 6.. / D6 = 6  =>  3 pairs (_) / F6 = 6  =>  0 pairs (_)
B3,D3: 6.. / B3 = 6  =>  2 pairs (_) / D3 = 6  =>  0 pairs (_)
C2,C7: 6.. / C2 = 6  =>  0 pairs (_) / C7 = 6  =>  2 pairs (_)
E2,E7: 6.. / E2 = 6  =>  2 pairs (_) / E7 = 6  =>  0 pairs (_)
B4,B5: 7.. / B4 = 7  =>  0 pairs (_) / B5 = 7  =>  1 pairs (_)
G9,H9: 7.. / G9 = 7  =>  4 pairs (_) / H9 = 7  =>  0 pairs (_)
H2,I2: 8.. / H2 = 8  =>  1 pairs (_) / I2 = 8  =>  0 pairs (_)
I5,I6: 9.. / I5 = 9  =>  0 pairs (_) / I6 = 9  =>  0 pairs (_)
H7,H9: 9.. / H7 = 9  =>  0 pairs (_) / H9 = 9  =>  4 pairs (_)
B5,I5: 9.. / B5 = 9  =>  0 pairs (_) / I5 = 9  =>  0 pairs (_)
* DURATION: 0:00:08.364837  START: 10:46:25.205352  END: 10:46:33.570189 2020-11-05
* CP COUNT: (13)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
H7,H9: 9.. / H7 = 9  =>  0 pairs (X) / H9 = 9 ==>  0 pairs (*)
* DURATION: 0:00:13.436421  START: 10:46:33.570978  END: 10:46:47.007399 2020-11-05
* REASONING H7,H9: 9..
* PRF # H9: 9 # D3: 2,3 => SOL
* STA # H9: 9 + D3: 2,3
* CNT   1 HDP CHAINS /   7 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

2236567;2018_12_25;PAQ;24;11.40;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for H7,H9: 9..:

* INC # H9: 9 # I1: 2,3 => UNS
* INC # H9: 9 # I2: 2,3 => UNS
* INC # H9: 9 # I3: 2,3 => UNS
* INC # H9: 9 # A3: 2,3 => UNS
* INC # H9: 9 # B3: 2,3 => UNS
* PRF # H9: 9 # D3: 2,3 => SOL
* STA # H9: 9 + D3: 2,3
* CNT   6 HDP CHAINS /   7 HYP OPENED