Analysis of xx-ph-01054270-13_07-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..5...8..7...7..6...8......4..3.........5.6.9...59..48.....2.8..1....5.7.. initial

Autosolve

position: 98.7..6..5...8..7...7..6...89.....4..3.........5.6.9...59..48.....2.8..1..8.5.7.. 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 A7,E7: 7..:

* DIS # A7: 7 # E5: 1,2 => CTR => E5: 4,9
* PRF # A7: 7 + E5: 4,9 # F2: 3,9 => SOL
* STA # A7: 7 + E5: 4,9 + F2: 3,9
* CNT   2 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..5...8..7...7..6...8......4..3.........5.6.9...59..48.....2.8..1....5.7.. initial
98.7..6..5...8..7...7..6...89.....4..3.........5.6.9...59..48.....2.8..1..8.5.7.. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
G8,I9: 4.. / G8 = 4  =>  4 pairs (_) / I9 = 4  =>  1 pairs (_)
F1,D3: 5.. / F1 = 5  =>  0 pairs (_) / D3 = 5  =>  1 pairs (_)
G8,H8: 5.. / G8 = 5  =>  1 pairs (_) / H8 = 5  =>  2 pairs (_)
B2,C2: 6.. / B2 = 6  =>  1 pairs (_) / C2 = 6  =>  3 pairs (_)
D7,D9: 6.. / D7 = 6  =>  6 pairs (_) / D9 = 6  =>  1 pairs (_)
C4,I4: 6.. / C4 = 6  =>  2 pairs (_) / I4 = 6  =>  2 pairs (_)
E7,E8: 7.. / E7 = 7  =>  1 pairs (_) / E8 = 7  =>  8 pairs (_)
F4,I4: 7.. / F4 = 7  =>  0 pairs (_) / I4 = 7  =>  2 pairs (_)
A7,E7: 7.. / A7 = 7  =>  8 pairs (_) / E7 = 7  =>  1 pairs (_)
B6,B8: 7.. / B6 = 7  =>  1 pairs (_) / B8 = 7  =>  1 pairs (_)
H3,I3: 8.. / H3 = 8  =>  0 pairs (_) / I3 = 8  =>  0 pairs (_)
D5,D6: 8.. / D5 = 8  =>  0 pairs (_) / D6 = 8  =>  0 pairs (_)
E8,H8: 9.. / E8 = 9  =>  1 pairs (_) / H8 = 9  =>  3 pairs (_)
* DURATION: 0:00:09.376806  START: 15:27:32.413684  END: 15:27:41.790490 2021-01-10
* CP COUNT: (13)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
A7,E7: 7.. / A7 = 7 ==>  0 pairs (*) / E7 = 7  =>  0 pairs (X)
* DURATION: 0:00:32.746053  START: 15:27:41.791079  END: 15:28:14.537132 2021-01-10
* REASONING A7,E7: 7..
* DIS # A7: 7 # E5: 1,2 => CTR => E5: 4,9
* PRF # A7: 7 + E5: 4,9 # F2: 3,9 => SOL
* STA # A7: 7 + E5: 4,9 + F2: 3,9
* CNT   2 HDP CHAINS /  35 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

1054270;13_07;GP;24;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for A7,E7: 7..:

* INC # A7: 7 # G4: 1,2 => UNS
* INC # A7: 7 # H6: 1,2 => UNS
* INC # A7: 7 # A5: 1,2 => UNS
* INC # A7: 7 # C5: 1,2 => UNS
* DIS # A7: 7 # E5: 1,2 => CTR => E5: 4,9
* INC # A7: 7 + E5: 4,9 # F5: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # G2: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # G3: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # G4: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # H6: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # A5: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # C5: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # F5: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # G2: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # G3: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # I4: 5,6 => UNS
* INC # A7: 7 + E5: 4,9 # I5: 5,6 => UNS
* INC # A7: 7 + E5: 4,9 # A8: 4,6 => UNS
* INC # A7: 7 + E5: 4,9 # C8: 4,6 => UNS
* INC # A7: 7 + E5: 4,9 # B2: 4,6 => UNS
* INC # A7: 7 + E5: 4,9 # B2: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # A3: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # A5: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # A6: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # B2: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # B3: 1,2 => UNS
* INC # A7: 7 + E5: 4,9 # D7: 1,3 => UNS
* INC # A7: 7 + E5: 4,9 # D7: 6 => UNS
* INC # A7: 7 + E5: 4,9 # E1: 1,3 => UNS
* INC # A7: 7 + E5: 4,9 # E3: 1,3 => UNS
* INC # A7: 7 + E5: 4,9 # E4: 1,3 => UNS
* INC # A7: 7 + E5: 4,9 # D9: 3,9 => UNS
* INC # A7: 7 + E5: 4,9 # D9: 6 => UNS
* PRF # A7: 7 + E5: 4,9 # F2: 3,9 => SOL
* STA # A7: 7 + E5: 4,9 + F2: 3,9
* CNT  34 HDP CHAINS /  35 HYP OPENED