Analysis of xx-ph-00975683-13_03-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..75.....8...6.....75...4......89...5.......3..2.98...7..1......2..56...9. initial

Autosolve

position: 98.7..6..75.....8...6.....75...4......89...5.......3..2.98...7..1......2..56...9. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000008

List of important HDP chains detected for I1,I7: 5..:

* PRF # I7: 5 # B6: 4,7 => SOL
* STA # I7: 5 + B6: 4,7
* CNT   1 HDP CHAINS /  35 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..75.....8...6.....75...4......89...5.......3..2.98...7..1......2..56...9. initial
98.7..6..75.....8...6.....75...4......89...5.......3..2.98...7..1......2..56...9. autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
E9,F9: 2.. / E9 = 2  =>  0 pairs (_) / F9 = 2  =>  0 pairs (_)
I1,G3: 5.. / I1 = 5  =>  0 pairs (_) / G3 = 5  => 14 pairs (_)
I1,I7: 5.. / I1 = 5  =>  0 pairs (_) / I7 = 5  => 14 pairs (_)
E2,F2: 6.. / E2 = 6  =>  0 pairs (_) / F2 = 6  =>  0 pairs (_)
B7,A8: 6.. / B7 = 6  =>  1 pairs (_) / A8 = 6  =>  6 pairs (_)
I7,H8: 6.. / I7 = 6  =>  6 pairs (_) / H8 = 6  =>  1 pairs (_)
B7,I7: 6.. / B7 = 6  =>  1 pairs (_) / I7 = 6  =>  6 pairs (_)
A8,H8: 6.. / A8 = 6  =>  6 pairs (_) / H8 = 6  =>  1 pairs (_)
G4,G5: 7.. / G4 = 7  =>  2 pairs (_) / G5 = 7  =>  0 pairs (_)
C8,B9: 7.. / C8 = 7  =>  4 pairs (_) / B9 = 7  =>  3 pairs (_)
E3,F3: 8.. / E3 = 8  =>  0 pairs (_) / F3 = 8  =>  0 pairs (_)
A8,A9: 8.. / A8 = 8  =>  3 pairs (_) / A9 = 8  =>  2 pairs (_)
A8,G8: 8.. / A8 = 8  =>  3 pairs (_) / G8 = 8  =>  2 pairs (_)
E3,E6: 8.. / E3 = 8  =>  0 pairs (_) / E6 = 8  =>  0 pairs (_)
B4,B6: 9.. / B4 = 9  =>  0 pairs (_) / B6 = 9  =>  0 pairs (_)
E8,F8: 9.. / E8 = 9  =>  0 pairs (_) / F8 = 9  =>  0 pairs (_)
B6,I6: 9.. / B6 = 9  =>  0 pairs (_) / I6 = 9  =>  0 pairs (_)
* DURATION: 0:00:11.847826  START: 19:37:39.016696  END: 19:37:50.864522 2021-01-05
* CP COUNT: (17)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
I1,I7: 5.. / I1 = 5  =>  0 pairs (X) / I7 = 5 ==>  0 pairs (*)
* DURATION: 0:00:35.311673  START: 19:37:50.865281  END: 19:38:26.176954 2021-01-05
* REASONING I1,I7: 5..
* PRF # I7: 5 # B6: 4,7 => SOL
* STA # I7: 5 + B6: 4,7
* CNT   1 HDP CHAINS /  35 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

975683;13_03;GP;24;11.30;11.30;8.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for I1,I7: 5..:

* INC # I7: 5 # H1: 1,4 => UNS
* INC # I7: 5 # I2: 1,4 => UNS
* INC # I7: 5 # H3: 1,4 => UNS
* INC # I7: 5 # C1: 1,4 => UNS
* INC # I7: 5 # F1: 1,4 => UNS
* INC # I7: 5 # I5: 1,4 => UNS
* INC # I7: 5 # I6: 1,4 => UNS
* INC # I7: 5 # G4: 2,9 => UNS
* INC # I7: 5 # G4: 7 => UNS
* INC # I7: 5 # E6: 6,8 => UNS
* INC # I7: 5 # F6: 6,8 => UNS
* INC # I7: 5 # H6: 1,2 => UNS
* INC # I7: 5 # H6: 4 => UNS
* INC # I7: 5 # C4: 1,2 => UNS
* INC # I7: 5 # D4: 1,2 => UNS
* INC # I7: 5 # H1: 1,2 => UNS
* INC # I7: 5 # H3: 1,2 => UNS
* INC # I7: 5 # I6: 6,8 => UNS
* INC # I7: 5 # I6: 1,4,9 => UNS
* INC # I7: 5 # G4: 2,7 => UNS
* INC # I7: 5 # G4: 9 => UNS
* INC # I7: 5 # B5: 2,7 => UNS
* INC # I7: 5 # E5: 2,7 => UNS
* INC # I7: 5 # F5: 2,7 => UNS
* INC # I7: 5 # A8: 4,8 => UNS
* INC # I7: 5 # A8: 3 => UNS
* INC # I7: 5 # G9: 4,8 => UNS
* INC # I7: 5 # G9: 1 => UNS
* INC # I7: 5 # C8: 4,7 => UNS
* INC # I7: 5 # C8: 3 => UNS
* INC # I7: 5 # F9: 4,7 => UNS
* INC # I7: 5 # F9: 1,2 => UNS
* INC # I7: 5 # B5: 4,7 => UNS
* PRF # I7: 5 # B6: 4,7 => SOL
* STA # I7: 5 + B6: 4,7
* CNT  34 HDP CHAINS /  35 HYP OPENED