Analysis of xx-ph-00051935-12_10-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7.....6...5......4..89..4....76.....3...5.....2...1.4...67....71...3.........2 initial

Autosolve

position: 98.7.....6...5......4..89..4....76.....3...5.....2...1.4...67....71...3.....7...2 autosolve
Autosolve

Pair Reduction Variants

Pair Reduction Analysis

Pair Reduction Analysis

See Appendix: Full HDP Chains for full list of HDP chains.

Pair Reduction

Pair Reduction

See Appendix: Full HDP Chains for full list of HDP chains.

Deep Pair Reduction

Deep Pair Reduction

Time used: 0:00:09.272193

The following important HDP chains were detected:

* DIS # H3: 2,6 # E1: 1,3 => CTR => E1: 4,6
* CNT   1 HDP CHAINS /  25 HYP OPENED

See Appendix: Full HDP Chains for full list of HDP chains.

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000017

List of important HDP chains detected for D2,F2: 9..:

* DIS # F2: 9 # E5: 1,4 => CTR => E5: 6,8,9
* DIS # F2: 9 + E5: 6,8,9 # D6: 4,5 => CTR => D6: 6,8,9
* DIS # F2: 9 + E5: 6,8,9 + D6: 6,8,9 # B8: 2,5 => CTR => B8: 6,9
* CNT   3 HDP CHAINS /  54 HYP OPENED

List of important HDP chains detected for E7,F9: 3..:

* DIS # F9: 3 # D7: 8,9 => CTR => D7: 2,5
* DIS # F9: 3 + D7: 2,5 # C7: 8,9 => CTR => C7: 1,2,3,5
* PRF # F9: 3 + D7: 2,5 + C7: 1,2,3,5 # H7: 8,9 => SOL
* STA # F9: 3 + D7: 2,5 + C7: 1,2,3,5 + H7: 8,9
* CNT   3 HDP CHAINS /  17 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......4..89..4....76.....3...5.....2...1.4...67....71...3.........2 initial
98.7.....6...5......4..89..4....76.....3...5.....2...1.4...67....71...3.....7...2 autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* PAIRS (1)
D3: 2,6

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
H4,G5: 2.. / H4 = 2  =>  2 pairs (_) / G5 = 2  =>  2 pairs (_)
D7,F8: 2.. / D7 = 2  =>  2 pairs (_) / F8 = 2  =>  2 pairs (_)
I4,G6: 3.. / I4 = 3  =>  2 pairs (_) / G6 = 3  =>  2 pairs (_)
E7,F9: 3.. / E7 = 3  =>  2 pairs (_) / F9 = 3  =>  2 pairs (_)
E5,D6: 6.. / E5 = 6  =>  1 pairs (_) / D6 = 6  =>  2 pairs (_)
I8,H9: 6.. / I8 = 6  =>  1 pairs (_) / H9 = 6  =>  1 pairs (_)
B8,I8: 6.. / B8 = 6  =>  1 pairs (_) / I8 = 6  =>  1 pairs (_)
D3,D6: 6.. / D3 = 6  =>  1 pairs (_) / D6 = 6  =>  2 pairs (_)
I5,H6: 7.. / I5 = 7  =>  1 pairs (_) / H6 = 7  =>  1 pairs (_)
D2,F2: 9.. / D2 = 9  =>  2 pairs (_) / F2 = 9  =>  4 pairs (_)
* DURATION: 0:00:05.550579  START: 08:52:39.830621  END: 08:52:45.381200 2020-12-20
* CP COUNT: (10)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
D2,F2: 9.. / D2 = 9 ==>  2 pairs (_) / F2 = 9 ==>  7 pairs (_)
E7,F9: 3.. / E7 = 3 ==>  2 pairs (_) / F9 = 3 ==>  0 pairs (*)
* DURATION: 0:00:33.862818  START: 08:52:56.242355  END: 08:53:30.105173 2020-12-20
* REASONING D2,F2: 9..
* DIS # F2: 9 # E5: 1,4 => CTR => E5: 6,8,9
* DIS # F2: 9 + E5: 6,8,9 # D6: 4,5 => CTR => D6: 6,8,9
* DIS # F2: 9 + E5: 6,8,9 + D6: 6,8,9 # B8: 2,5 => CTR => B8: 6,9
* CNT   3 HDP CHAINS /  54 HYP OPENED
* REASONING E7,F9: 3..
* DIS # F9: 3 # D7: 8,9 => CTR => D7: 2,5
* DIS # F9: 3 + D7: 2,5 # C7: 8,9 => CTR => C7: 1,2,3,5
* PRF # F9: 3 + D7: 2,5 + C7: 1,2,3,5 # H7: 8,9 => SOL
* STA # F9: 3 + D7: 2,5 + C7: 1,2,3,5 + H7: 8,9
* CNT   3 HDP CHAINS /  17 HYP OPENED
* DCP COUNT: (2)
* SOLUTION FOUND

Header Info

51935;12_10;GP;22;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Pair Reduction Analysis

Full list of HDP chains traversed:

* INC # H3: 2,6 => UNS
* INC # H3: 1,7 => UNS
* CNT   2 HDP CHAINS /   2 HYP OPENED

A2. Pair Reduction

Full list of HDP chains traversed:

* INC # H3: 2,6 => UNS
* INC # H3: 1,7 => UNS
* CNT   2 HDP CHAINS /   2 HYP OPENED

A3. Deep Pair Reduction

Full list of HDP chains traversed:

* INC # H3: 2,6 => UNS
* INC # H3: 1,7 => UNS
* DIS # H3: 2,6 # E1: 1,3 => CTR => E1: 4,6
* INC # H3: 2,6 + E1: 4,6 # F1: 1,3 => UNS
* INC # H3: 2,6 + E1: 4,6 # F2: 1,3 => UNS
* INC # H3: 2,6 + E1: 4,6 # A3: 1,3 => UNS
* INC # H3: 2,6 + E1: 4,6 # B3: 1,3 => UNS
* INC # H3: 2,6 + E1: 4,6 # H1: 2,6 => UNS
* INC # H3: 2,6 + E1: 4,6 # H1: 1,4 => UNS
* INC # H3: 2,6 + E1: 4,6 # H1: 4,6 => UNS
* INC # H3: 2,6 + E1: 4,6 # I1: 4,6 => UNS
* INC # H3: 2,6 + E1: 4,6 # E5: 4,6 => UNS
* INC # H3: 2,6 + E1: 4,6 # E5: 1,8,9 => UNS
* INC # H3: 2,6 + E1: 4,6 # F1: 1,3 => UNS
* INC # H3: 2,6 + E1: 4,6 # F2: 1,3 => UNS
* INC # H3: 2,6 + E1: 4,6 # A3: 1,3 => UNS
* INC # H3: 2,6 + E1: 4,6 # B3: 1,3 => UNS
* INC # H3: 2,6 + E1: 4,6 # H1: 2,6 => UNS
* INC # H3: 2,6 + E1: 4,6 # H1: 1,4 => UNS
* INC # H3: 2,6 + E1: 4,6 => UNS
* INC # H3: 1,7 # H2: 1,7 => UNS
* INC # H3: 1,7 # H2: 2,4,8 => UNS
* INC # H3: 1,7 # A3: 1,7 => UNS
* INC # H3: 1,7 # B3: 1,7 => UNS
* INC # H3: 1,7 => UNS
* CNT  25 HDP CHAINS /  25 HYP OPENED

A4. Deep Constraint Pair Analysis

Full list of HDP chains traversed for D2,F2: 9..:

* INC # F2: 9 # F1: 2,4 => UNS
* INC # F2: 9 # F1: 1,3 => UNS
* INC # F2: 9 # G2: 2,4 => UNS
* INC # F2: 9 # H2: 2,4 => UNS
* INC # F2: 9 # H3: 2,6 => UNS
* INC # F2: 9 # H3: 1,7 => UNS
* DIS # F2: 9 # E5: 1,4 => CTR => E5: 6,8,9
* INC # F2: 9 + E5: 6,8,9 # F1: 1,4 => UNS
* INC # F2: 9 + E5: 6,8,9 # F1: 2,3 => UNS
* DIS # F2: 9 + E5: 6,8,9 # D6: 4,5 => CTR => D6: 6,8,9
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 # G2: 2,4 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 # H2: 2,4 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 # H3: 2,6 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 # H3: 1,7 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 # D7: 2,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 # D7: 8,9 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 # A8: 2,5 => UNS
* DIS # F2: 9 + E5: 6,8,9 + D6: 6,8,9 # B8: 2,5 => CTR => B8: 6,9
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # A8: 2,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # A8: 8 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # D7: 2,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # D7: 8,9 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # A8: 2,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # A8: 8 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # A9: 3,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # B9: 3,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # C9: 3,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # G2: 2,4 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # H2: 2,4 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # H3: 2,6 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # H3: 1,7 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # B9: 6,9 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # C9: 6,9 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # I8: 6,9 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # I8: 4,5,8 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # B5: 6,9 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # B6: 6,9 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # D7: 2,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # D7: 8,9 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # A8: 2,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # A8: 8 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # A9: 3,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # B9: 3,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 # C9: 3,5 => UNS
* INC # F2: 9 + E5: 6,8,9 + D6: 6,8,9 + B8: 6,9 => UNS
* INC # D2: 9 # H3: 2,6 => UNS
* INC # D2: 9 # H3: 1,7 => UNS
* INC # D2: 9 # D6: 5,8 => UNS
* INC # D2: 9 # D6: 4,6 => UNS
* INC # D2: 9 # C4: 5,8 => UNS
* INC # D2: 9 # C4: 1,2,3,9 => UNS
* INC # D2: 9 # D7: 5,8 => UNS
* INC # D2: 9 # D9: 5,8 => UNS
* INC # D2: 9 => UNS
* CNT  54 HDP CHAINS /  54 HYP OPENED

Full list of HDP chains traversed for E7,F9: 3..:

* INC # E7: 3 # H3: 2,6 => UNS
* INC # E7: 3 # H3: 1,7 => UNS
* INC # E7: 3 # E1: 1,6 => UNS
* INC # E7: 3 # E1: 4 => UNS
* INC # E7: 3 # H3: 1,6 => UNS
* INC # E7: 3 # H3: 2,7 => UNS
* INC # E7: 3 # E5: 1,6 => UNS
* INC # E7: 3 # E5: 4,8,9 => UNS
* INC # E7: 3 => UNS
* INC # F9: 3 # H3: 2,6 => UNS
* INC # F9: 3 # H3: 1,7 => UNS
* DIS # F9: 3 # D7: 8,9 => CTR => D7: 2,5
* INC # F9: 3 + D7: 2,5 # E8: 8,9 => UNS
* INC # F9: 3 + D7: 2,5 # D9: 8,9 => UNS
* DIS # F9: 3 + D7: 2,5 # C7: 8,9 => CTR => C7: 1,2,3,5
* PRF # F9: 3 + D7: 2,5 + C7: 1,2,3,5 # H7: 8,9 => SOL
* STA # F9: 3 + D7: 2,5 + C7: 1,2,3,5 + H7: 8,9
* CNT  16 HDP CHAINS /  17 HYP OPENED