Analysis of xx-ph-02320919-2019_03_16-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..7...9..5..453..7..3..8...47..8.6.3............3.6..4....7.3...2.....1... initial

Autosolve

position: 98.7..6..7...9..5..453..7..3..8...47..8.6.3.......3....3.6..4....7.3...2.....1... 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 I1,I2: 4..:

* PRF # I1: 4 # F5: 2,5 => SOL
* STA # I1: 4 + F5: 2,5
* CNT   1 HDP CHAINS /  25 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...9..5..453..7..3..8...47..8.6.3............3.6..4....7.3...2.....1... initial
98.7..6..7...9..5..453..7..3..8...47..8.6.3.......3....3.6..4....7.3...2.....1... autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
C1,C2: 3.. / C1 = 3  =>  2 pairs (_) / C2 = 3  =>  1 pairs (_)
H9,I9: 3.. / H9 = 3  =>  3 pairs (_) / I9 = 3  =>  2 pairs (_)
C2,I2: 3.. / C2 = 3  =>  1 pairs (_) / I2 = 3  =>  2 pairs (_)
H1,H9: 3.. / H1 = 3  =>  2 pairs (_) / H9 = 3  =>  3 pairs (_)
I1,I2: 4.. / I1 = 4  =>  1 pairs (_) / I2 = 4  =>  5 pairs (_)
C6,C9: 4.. / C6 = 4  =>  0 pairs (_) / C9 = 4  =>  0 pairs (_)
E1,F1: 5.. / E1 = 5  =>  2 pairs (_) / F1 = 5  =>  1 pairs (_)
F2,F3: 6.. / F2 = 6  =>  3 pairs (_) / F3 = 6  =>  1 pairs (_)
B4,C4: 6.. / B4 = 6  =>  1 pairs (_) / C4 = 6  =>  0 pairs (_)
H6,I6: 6.. / H6 = 6  =>  3 pairs (_) / I6 = 6  =>  0 pairs (_)
A3,F3: 6.. / A3 = 6  =>  3 pairs (_) / F3 = 6  =>  1 pairs (_)
I6,I9: 6.. / I6 = 6  =>  0 pairs (_) / I9 = 6  =>  3 pairs (_)
B5,B6: 7.. / B5 = 7  =>  2 pairs (_) / B6 = 7  =>  0 pairs (_)
F5,E6: 7.. / F5 = 7  =>  0 pairs (_) / E6 = 7  =>  2 pairs (_)
H7,H9: 7.. / H7 = 7  =>  0 pairs (_) / H9 = 7  =>  2 pairs (_)
B5,F5: 7.. / B5 = 7  =>  2 pairs (_) / F5 = 7  =>  0 pairs (_)
B6,E6: 7.. / B6 = 7  =>  0 pairs (_) / E6 = 7  =>  2 pairs (_)
E9,H9: 7.. / E9 = 7  =>  0 pairs (_) / H9 = 7  =>  2 pairs (_)
F5,F7: 7.. / F5 = 7  =>  0 pairs (_) / F7 = 7  =>  2 pairs (_)
H3,I3: 9.. / H3 = 9  =>  2 pairs (_) / I3 = 9  =>  1 pairs (_)
* DURATION: 0:00:14.257869  START: 04:06:49.921199  END: 04:07:04.179068 2020-11-12
* CP COUNT: (20)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
I1,I2: 4.. / I1 = 4 ==>  0 pairs (*) / I2 = 4 ==>  5 pairs (_)
* DURATION: 0:00:26.218422  START: 04:07:04.179648  END: 04:07:30.398070 2020-11-12
* REASONING I1,I2: 4..
* PRF # I1: 4 # F5: 2,5 => SOL
* STA # I1: 4 + F5: 2,5
* CNT   1 HDP CHAINS /  25 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

2320919;2019_03_16;PAQ;25;11.40;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for I1,I2: 4..:

* INC # I2: 4 # B2: 1,2 => UNS
* INC # I2: 4 # A3: 1,2 => UNS
* INC # I2: 4 # H1: 1,2 => UNS
* INC # I2: 4 # H1: 3 => UNS
* INC # I2: 4 # C4: 1,2 => UNS
* INC # I2: 4 # C6: 1,2 => UNS
* INC # I2: 4 # C7: 1,2 => UNS
* INC # I2: 4 # E6: 4,5 => UNS
* INC # I2: 4 # E9: 4,5 => UNS
* INC # I2: 4 # F5: 4,5 => UNS
* INC # I2: 4 # F8: 4,5 => UNS
* INC # I2: 4 # E3: 1,2 => UNS
* INC # I2: 4 # E3: 8 => UNS
* INC # I2: 4 # B2: 1,2 => UNS
* INC # I2: 4 # G2: 1,2 => UNS
* INC # I2: 4 # D5: 1,2 => UNS
* INC # I2: 4 # D6: 1,2 => UNS
* INC # I2: 4 # H1: 1,3 => UNS
* INC # I2: 4 # H1: 2 => UNS
* INC # I2: 4 => UNS
* INC # I1: 4 # E1: 2,5 => UNS
* INC # I1: 4 # E1: 1 => UNS
* INC # I1: 4 # F4: 2,5 => UNS
* PRF # I1: 4 # F5: 2,5 => SOL
* STA # I1: 4 + F5: 2,5
* CNT  24 HDP CHAINS /  25 HYP OPENED