Analysis of xx-ph-01269956-13_12-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.76.5..7...8..9...5..9...57...6.8...49..3......2....45...7.6.....5...4......1.. initial

Autosolve

position: 98.76.5..7...8..9...5..9...57...6.8...497.3......2....45...7.6.....5...4......1.. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000006

List of important HDP chains detected for E7,E9: 9..:

* PRF # E7: 9 # G8: 2,8 => SOL
* STA # E7: 9 + G8: 2,8
* 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

98.76.5..7...8..9...5..9...57...6.8...49..3......2....45...7.6.....5...4......1.. initial
98.76.5..7...8..9...5..9...57...6.8...497.3......2....45...7.6.....5...4......1.. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
B2,B3: 4.. / B2 = 4  =>  1 pairs (_) / B3 = 4  =>  1 pairs (_)
F1,H1: 4.. / F1 = 4  =>  1 pairs (_) / H1 = 4  =>  1 pairs (_)
D2,F2: 5.. / D2 = 5  =>  0 pairs (_) / F2 = 5  =>  1 pairs (_)
H9,I9: 5.. / H9 = 5  =>  1 pairs (_) / I9 = 5  =>  0 pairs (_)
D2,D6: 5.. / D2 = 5  =>  0 pairs (_) / D6 = 5  =>  1 pairs (_)
D8,D9: 6.. / D8 = 6  =>  0 pairs (_) / D9 = 6  =>  0 pairs (_)
C8,C9: 7.. / C8 = 7  =>  3 pairs (_) / C9 = 7  =>  0 pairs (_)
G3,I3: 8.. / G3 = 8  =>  1 pairs (_) / I3 = 8  =>  0 pairs (_)
A5,F5: 8.. / A5 = 8  =>  1 pairs (_) / F5 = 8  =>  0 pairs (_)
E7,E9: 9.. / E7 = 9  =>  2 pairs (_) / E9 = 9  =>  1 pairs (_)
* DURATION: 0:00:06.454590  START: 00:16:41.023955  END: 00:16:47.478545 2020-10-05
* CP COUNT: (10)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
C8,C9: 7.. / C8 = 7 ==>  3 pairs (_) / C9 = 7 ==>  0 pairs (_)
E7,E9: 9.. / E7 = 9 ==>  0 pairs (*) / E9 = 9  =>  0 pairs (X)
* DURATION: 0:00:17.468852  START: 00:16:47.479168  END: 00:17:04.948020 2020-10-05
* REASONING E7,E9: 9..
* PRF # E7: 9 # G8: 2,8 => SOL
* STA # E7: 9 + G8: 2,8
* CNT   1 HDP CHAINS /   7 HYP OPENED
* DCP COUNT: (2)
* SOLUTION FOUND

Header Info

1269956;13_12;GP;25;11.50;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for C8,C9: 7..:

* INC # C8: 7 # I7: 2,3 => UNS
* INC # C8: 7 # I7: 8,9 => UNS
* INC # C8: 7 # A8: 2,3 => UNS
* INC # C8: 7 # B8: 2,3 => UNS
* INC # C8: 7 # D8: 2,3 => UNS
* INC # C8: 7 # F8: 2,3 => UNS
* INC # C8: 7 # H1: 2,3 => UNS
* INC # C8: 7 # H3: 2,3 => UNS
* INC # C8: 7 # H6: 5,7 => UNS
* INC # C8: 7 # H6: 1,4 => UNS
* INC # C8: 7 # I6: 5,7 => UNS
* INC # C8: 7 # I6: 1,6,9 => UNS
* INC # C8: 7 => UNS
* INC # C9: 7 => UNS
* CNT  14 HDP CHAINS /  14 HYP OPENED

Full list of HDP chains traversed for E7,E9: 9..:

* INC # E7: 9 # D9: 3,4 => UNS
* INC # E7: 9 # F9: 3,4 => UNS
* INC # E7: 9 # E3: 3,4 => UNS
* INC # E7: 9 # E4: 3,4 => UNS
* INC # E7: 9 # I7: 2,8 => UNS
* PRF # E7: 9 # G8: 2,8 => SOL
* STA # E7: 9 + G8: 2,8
* CNT   6 HDP CHAINS /   7 HYP OPENED