Analysis of xx-ph-00975230-13_03-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..7..5..8....4.9....6...75.3....3....6....8.7..5..8..3...9.........2..7..1 initial

Autosolve

position: 98.7..6..7..5..8....4.98...6...75.3....3....6....8.7..5..8..3...9.........2..7..1 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 D6,F6: 6..:

* DIS # D6: 6 # B2: 1,3 => CTR => B2: 2
* PRF # D6: 6 + B2: 2 # C8: 1,3 => SOL
* STA # D6: 6 + B2: 2 + C8: 1,3
* CNT   2 HDP CHAINS /   6 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..8....4.9....6...75.3....3....6....8.7..5..8..3...9.........2..7..1 initial
98.7..6..7..5..8....4.98...6...75.3....3....6....8.7..5..8..3...9.........2..7..1 autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
C1,B3: 5.. / C1 = 5  =>  0 pairs (_) / B3 = 5  =>  3 pairs (_)
E8,E9: 5.. / E8 = 5  =>  1 pairs (_) / E9 = 5  =>  1 pairs (_)
D6,F6: 6.. / D6 = 6  =>  4 pairs (_) / F6 = 6  =>  0 pairs (_)
B3,D3: 6.. / B3 = 6  =>  3 pairs (_) / D3 = 6  =>  1 pairs (_)
H3,I3: 7.. / H3 = 7  =>  0 pairs (_) / I3 = 7  =>  2 pairs (_)
B5,C5: 7.. / B5 = 7  =>  0 pairs (_) / C5 = 7  =>  1 pairs (_)
B5,B7: 7.. / B5 = 7  =>  0 pairs (_) / B7 = 7  =>  1 pairs (_)
I4,H5: 8.. / I4 = 8  =>  1 pairs (_) / H5 = 8  =>  0 pairs (_)
C4,I4: 8.. / C4 = 8  =>  0 pairs (_) / I4 = 8  =>  1 pairs (_)
A9,H9: 8.. / A9 = 8  =>  0 pairs (_) / H9 = 8  =>  2 pairs (_)
I4,I8: 8.. / I4 = 8  =>  1 pairs (_) / I8 = 8  =>  0 pairs (_)
H2,I2: 9.. / H2 = 9  =>  0 pairs (_) / I2 = 9  =>  0 pairs (_)
F7,D9: 9.. / F7 = 9  =>  1 pairs (_) / D9 = 9  =>  1 pairs (_)
* DURATION: 0:00:07.727175  START: 07:02:22.840921  END: 07:02:30.568096 2021-01-05
* CP COUNT: (13)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
D6,F6: 6.. / D6 = 6 ==>  0 pairs (*) / F6 = 6  =>  0 pairs (X)
* DURATION: 0:00:11.919743  START: 07:02:30.568609  END: 07:02:42.488352 2021-01-05
* REASONING D6,F6: 6..
* DIS # D6: 6 # B2: 1,3 => CTR => B2: 2
* PRF # D6: 6 + B2: 2 # C8: 1,3 => SOL
* STA # D6: 6 + B2: 2 + C8: 1,3
* CNT   2 HDP CHAINS /   6 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

975230;13_03;GP;24;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for D6,F6: 6..:

* DIS # D6: 6 # B2: 1,3 => CTR => B2: 2
* INC # D6: 6 + B2: 2 # E2: 1,3 => UNS
* INC # D6: 6 + B2: 2 # F2: 1,3 => UNS
* INC # D6: 6 + B2: 2 # C6: 1,3 => UNS
* PRF # D6: 6 + B2: 2 # C8: 1,3 => SOL
* STA # D6: 6 + B2: 2 + C8: 1,3
* CNT   5 HDP CHAINS /   6 HYP OPENED