Analysis of xx-ph-00057826-12_10-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..7..5..9....4....8.6..9..5...3..7........2....1....7..9.7..591.....1...6. initial

Autosolve

position: 98.7..6..7..5..9....4.9..8.6..9..5...3..7........2....1....7..9.7..591.....1...6. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000006

List of important HDP chains detected for E2,E7: 6..:

* DIS # E2: 6 # F3: 2,3 => CTR => F3: 1
* DIS # E2: 6 + F3: 1 # B9: 2,4 => CTR => B9: 5,9
* PRF # E2: 6 + F3: 1 + B9: 5,9 # B7: 5 => SOL
* STA # E2: 6 + F3: 1 + B9: 5,9 + B7: 5
* CNT   3 HDP CHAINS /  22 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..7........2....1....7..9.7..591.....1...6. initial
98.7..6..7..5..9....4.9..8.6..9..5...3..7........2....1....7..9.7..591.....1...6. autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
F5,F6: 5.. / F5 = 5  =>  0 pairs (_) / F6 = 5  =>  1 pairs (_)
H7,I9: 5.. / H7 = 5  =>  0 pairs (_) / I9 = 5  =>  1 pairs (_)
H1,H7: 5.. / H1 = 5  =>  1 pairs (_) / H7 = 5  =>  0 pairs (_)
I5,I6: 6.. / I5 = 6  =>  1 pairs (_) / I6 = 6  =>  0 pairs (_)
C8,D8: 6.. / C8 = 6  =>  0 pairs (_) / D8 = 6  =>  6 pairs (_)
E2,E7: 6.. / E2 = 6  =>  6 pairs (_) / E7 = 6  =>  0 pairs (_)
G3,I3: 7.. / G3 = 7  =>  0 pairs (_) / I3 = 7  =>  1 pairs (_)
C4,C6: 7.. / C4 = 7  =>  0 pairs (_) / C6 = 7  =>  0 pairs (_)
H4,H6: 7.. / H4 = 7  =>  0 pairs (_) / H6 = 7  =>  0 pairs (_)
G9,I9: 7.. / G9 = 7  =>  1 pairs (_) / I9 = 7  =>  0 pairs (_)
C4,H4: 7.. / C4 = 7  =>  0 pairs (_) / H4 = 7  =>  0 pairs (_)
C6,H6: 7.. / C6 = 7  =>  0 pairs (_) / H6 = 7  =>  0 pairs (_)
G3,G9: 7.. / G3 = 7  =>  0 pairs (_) / G9 = 7  =>  1 pairs (_)
I3,I9: 7.. / I3 = 7  =>  1 pairs (_) / I9 = 7  =>  0 pairs (_)
E2,F2: 8.. / E2 = 8  =>  1 pairs (_) / F2 = 8  =>  0 pairs (_)
H5,H6: 9.. / H5 = 9  =>  0 pairs (_) / H6 = 9  =>  0 pairs (_)
B9,C9: 9.. / B9 = 9  =>  2 pairs (_) / C9 = 9  =>  0 pairs (_)
C5,H5: 9.. / C5 = 9  =>  0 pairs (_) / H5 = 9  =>  0 pairs (_)
B6,B9: 9.. / B6 = 9  =>  0 pairs (_) / B9 = 9  =>  2 pairs (_)
* DURATION: 0:00:12.459137  START: 04:47:21.559323  END: 04:47:34.018460 2020-12-21
* CP COUNT: (19)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
E2,E7: 6.. / E2 = 6 ==>  0 pairs (*) / E7 = 6  =>  0 pairs (X)
* DURATION: 0:00:26.362272  START: 04:47:34.019062  END: 04:48:00.381334 2020-12-21
* REASONING E2,E7: 6..
* DIS # E2: 6 # F3: 2,3 => CTR => F3: 1
* DIS # E2: 6 + F3: 1 # B9: 2,4 => CTR => B9: 5,9
* PRF # E2: 6 + F3: 1 + B9: 5,9 # B7: 5 => SOL
* STA # E2: 6 + F3: 1 + B9: 5,9 + B7: 5
* CNT   3 HDP CHAINS /  22 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

57826;12_10;GP;24;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for E2,E7: 6..:

* INC # E2: 6 # C1: 1,2 => UNS
* INC # E2: 6 # C2: 1,2 => UNS
* INC # E2: 6 # H2: 1,2 => UNS
* INC # E2: 6 # I2: 1,2 => UNS
* INC # E2: 6 # F1: 2,3 => UNS
* DIS # E2: 6 # F3: 2,3 => CTR => F3: 1
* INC # E2: 6 + F3: 1 # F1: 2,3 => UNS
* INC # E2: 6 + F3: 1 # F1: 4 => UNS
* INC # E2: 6 + F3: 1 # A3: 2,3 => UNS
* INC # E2: 6 + F3: 1 # G3: 2,3 => UNS
* INC # E2: 6 + F3: 1 # I3: 2,3 => UNS
* INC # E2: 6 + F3: 1 # D7: 2,3 => UNS
* INC # E2: 6 + F3: 1 # D8: 2,3 => UNS
* INC # E2: 6 + F3: 1 # A5: 2,4 => UNS
* INC # E2: 6 + F3: 1 # A5: 5,8 => UNS
* INC # E2: 6 + F3: 1 # H4: 2,4 => UNS
* INC # E2: 6 + F3: 1 # I4: 2,4 => UNS
* INC # E2: 6 + F3: 1 # B7: 2,4 => UNS
* DIS # E2: 6 + F3: 1 # B9: 2,4 => CTR => B9: 5,9
* INC # E2: 6 + F3: 1 + B9: 5,9 # B7: 2,4 => UNS
* PRF # E2: 6 + F3: 1 + B9: 5,9 # B7: 5 => SOL
* STA # E2: 6 + F3: 1 + B9: 5,9 + B7: 5
* CNT  21 HDP CHAINS /  22 HYP OPENED