Analysis of xx-ph-02123973-2018_12_01-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..5...84.....3.9.....9....8...6...7.2...5....76.4...97....76....1.......6. initial

Autosolve

position: 98.7..6..5.6.84.....3.96...79..6.8...6...7.2...5....7664...97....76....1..9.7..6. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000005

List of important HDP chains detected for C5,C7: 8..:

* DIS # C7: 8 # G8: 2,3 => CTR => G8: 4,5,9
* DIS # C7: 8 + G8: 4,5,9 # H8: 3,5 => CTR => H8: 4,8,9
* DIS # C7: 8 + G8: 4,5,9 + H8: 4,8,9 # I9: 3,5 => CTR => I9: 2,4,8
* CNT   3 HDP CHAINS /  66 HYP OPENED

List of important HDP chains detected for I2,I5: 9..:

* DIS # I2: 9 # A3: 1,2 => CTR => A3: 4
* PRF # I2: 9 + A3: 4 # H1: 1,3 => SOL
* STA # I2: 9 + A3: 4 + H1: 1,3
* CNT   2 HDP CHAINS /   8 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..5...84.....3.9.....9....8...6...7.2...5....76.4...97....76....1.......6. initial
98.7..6..5.6.84.....3.96...79..6.8...6...7.2...5....7664...97....76....1..9.7..6. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
C1,A3: 4.. / C1 = 4  =>  3 pairs (_) / A3 = 4  =>  1 pairs (_)
E8,D9: 4.. / E8 = 4  =>  0 pairs (_) / D9 = 4  =>  2 pairs (_)
B8,B9: 5.. / B8 = 5  =>  0 pairs (_) / B9 = 5  =>  1 pairs (_)
B2,B3: 7.. / B2 = 7  =>  2 pairs (_) / B3 = 7  =>  1 pairs (_)
I2,I3: 7.. / I2 = 7  =>  1 pairs (_) / I3 = 7  =>  2 pairs (_)
B2,I2: 7.. / B2 = 7  =>  2 pairs (_) / I2 = 7  =>  1 pairs (_)
B3,I3: 7.. / B3 = 7  =>  1 pairs (_) / I3 = 7  =>  2 pairs (_)
H3,I3: 8.. / H3 = 8  =>  1 pairs (_) / I3 = 8  =>  1 pairs (_)
C5,C7: 8.. / C5 = 8  =>  1 pairs (_) / C7 = 8  =>  3 pairs (_)
D5,D6: 9.. / D5 = 9  =>  3 pairs (_) / D6 = 9  =>  0 pairs (_)
G8,H8: 9.. / G8 = 9  =>  0 pairs (_) / H8 = 9  =>  1 pairs (_)
D6,G6: 9.. / D6 = 9  =>  0 pairs (_) / G6 = 9  =>  3 pairs (_)
H2,H8: 9.. / H2 = 9  =>  0 pairs (_) / H8 = 9  =>  1 pairs (_)
I2,I5: 9.. / I2 = 9  =>  3 pairs (_) / I5 = 9  =>  0 pairs (_)
* DURATION: 0:00:10.535359  START: 06:57:26.459896  END: 06:57:36.995255 2020-09-23
* CP COUNT: (14)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
C5,C7: 8.. / C5 = 8 ==>  1 pairs (_) / C7 = 8 ==>  3 pairs (_)
C1,A3: 4.. / C1 = 4 ==>  3 pairs (_) / A3 = 4 ==>  1 pairs (_)
I2,I5: 9.. / I2 = 9 ==>  0 pairs (*) / I5 = 9  =>  0 pairs (X)
* DURATION: 0:00:59.239382  START: 06:57:36.995873  END: 06:58:36.235255 2020-09-23
* REASONING C5,C7: 8..
* DIS # C7: 8 # G8: 2,3 => CTR => G8: 4,5,9
* DIS # C7: 8 + G8: 4,5,9 # H8: 3,5 => CTR => H8: 4,8,9
* DIS # C7: 8 + G8: 4,5,9 + H8: 4,8,9 # I9: 3,5 => CTR => I9: 2,4,8
* CNT   3 HDP CHAINS /  66 HYP OPENED
* REASONING I2,I5: 9..
* DIS # I2: 9 # A3: 1,2 => CTR => A3: 4
* PRF # I2: 9 + A3: 4 # H1: 1,3 => SOL
* STA # I2: 9 + A3: 4 + H1: 1,3
* CNT   2 HDP CHAINS /   8 HYP OPENED
* DCP COUNT: (3)
* SOLUTION FOUND

Header Info

2123973;2018_12_01;PAQ;24;11.60;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for C5,C7: 8..:

* INC # C7: 8 # C4: 1,4 => UNS
* INC # C7: 8 # A5: 1,4 => UNS
* INC # C7: 8 # A6: 1,4 => UNS
* INC # C7: 8 # D5: 1,4 => UNS
* INC # C7: 8 # E5: 1,4 => UNS
* INC # C7: 8 # G5: 1,4 => UNS
* INC # C7: 8 # C1: 1,4 => UNS
* INC # C7: 8 # C1: 2 => UNS
* INC # C7: 8 # B8: 2,3 => UNS
* INC # C7: 8 # A9: 2,3 => UNS
* INC # C7: 8 # B9: 2,3 => UNS
* INC # C7: 8 # E8: 2,3 => UNS
* INC # C7: 8 # F8: 2,3 => UNS
* DIS # C7: 8 # G8: 2,3 => CTR => G8: 4,5,9
* INC # C7: 8 + G8: 4,5,9 # A6: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 # A6: 1,4,8 => UNS
* INC # C7: 8 + G8: 4,5,9 # B8: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 # A9: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 # B9: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 # E8: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 # F8: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 # A6: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 # A6: 1,4,8 => UNS
* INC # C7: 8 + G8: 4,5,9 # I7: 3,5 => UNS
* DIS # C7: 8 + G8: 4,5,9 # H8: 3,5 => CTR => H8: 4,8,9
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 # G9: 3,5 => UNS
* DIS # C7: 8 + G8: 4,5,9 + H8: 4,8,9 # I9: 3,5 => CTR => I9: 2,4,8
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # D7: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # E7: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # H1: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # H4: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # I7: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # G9: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # D7: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # E7: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # H1: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # H4: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # C4: 1,4 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # A5: 1,4 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # A6: 1,4 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # D5: 1,4 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # E5: 1,4 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # G5: 1,4 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # C1: 1,4 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # C1: 2 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # B8: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # A9: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # B9: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # E8: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # F8: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # A6: 2,3 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # A6: 1,4,8 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # I7: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # G9: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # D7: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # E7: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # H1: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 # H4: 3,5 => UNS
* INC # C7: 8 + G8: 4,5,9 + H8: 4,8,9 + I9: 2,4,8 => UNS
* INC # C5: 8 # A9: 1,2 => UNS
* INC # C5: 8 # B9: 1,2 => UNS
* INC # C5: 8 # D7: 1,2 => UNS
* INC # C5: 8 # E7: 1,2 => UNS
* INC # C5: 8 # C1: 1,2 => UNS
* INC # C5: 8 # C4: 1,2 => UNS
* INC # C5: 8 => UNS
* CNT  66 HDP CHAINS /  66 HYP OPENED

Full list of HDP chains traversed for C1,A3: 4..:

* INC # C1: 4 # B2: 1,2 => UNS
* INC # C1: 4 # B3: 1,2 => UNS
* INC # C1: 4 # D3: 1,2 => UNS
* INC # C1: 4 # G3: 1,2 => UNS
* INC # C1: 4 # A6: 1,2 => UNS
* INC # C1: 4 # A9: 1,2 => UNS
* INC # C1: 4 # A6: 1,2 => UNS
* INC # C1: 4 # B6: 1,2 => UNS
* INC # C1: 4 # D4: 1,2 => UNS
* INC # C1: 4 # F4: 1,2 => UNS
* INC # C1: 4 # C7: 1,2 => UNS
* INC # C1: 4 # C7: 8 => UNS
* INC # C1: 4 # A5: 1,8 => UNS
* INC # C1: 4 # A6: 1,8 => UNS
* INC # C1: 4 # D5: 1,8 => UNS
* INC # C1: 4 # D5: 3,4,5,9 => UNS
* INC # C1: 4 # C7: 1,8 => UNS
* INC # C1: 4 # C7: 2 => UNS
* INC # C1: 4 => UNS
* INC # A3: 4 # B2: 1,2 => UNS
* INC # A3: 4 # B3: 1,2 => UNS
* INC # A3: 4 # E1: 1,2 => UNS
* INC # A3: 4 # F1: 1,2 => UNS
* INC # A3: 4 # C4: 1,2 => UNS
* INC # A3: 4 # C7: 1,2 => UNS
* INC # A3: 4 => UNS
* CNT  26 HDP CHAINS /  26 HYP OPENED

Full list of HDP chains traversed for I2,I5: 9..:

* INC # I2: 9 # C1: 1,2 => UNS
* DIS # I2: 9 # A3: 1,2 => CTR => A3: 4
* INC # I2: 9 + A3: 4 # D3: 1,2 => UNS
* INC # I2: 9 + A3: 4 # G3: 1,2 => UNS
* INC # I2: 9 + A3: 4 # B6: 1,2 => UNS
* INC # I2: 9 + A3: 4 # B9: 1,2 => UNS
* PRF # I2: 9 + A3: 4 # H1: 1,3 => SOL
* STA # I2: 9 + A3: 4 + H1: 1,3
* CNT   7 HDP CHAINS /   8 HYP OPENED