Analysis of xx-ph-00001099-L107-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 1....6..9.5.7.........3..4..7..4......9..8..28....29........8..6.....2.1.3.....5. initial

Autosolve

position: 1....6..9.5.7.........3..4..7..4......9..8..28....29........8..6.....2.1.3.....5. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000010

List of important HDP chains detected for H4,I4: 8..:

* PRF # I4: 8 # F2: 1,9 => SOL
* STA # I4: 8 + F2: 1,9
* CNT   1 HDP CHAINS /   3 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

1....6..9.5.7.........3..4..7..4......9..8..28....29........8..6.....2.1.3.....5. initial
1....6..9.5.7.........3..4..7..4......9..8..28....29........8..6.....2.1.3.....5. autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
H1,H2: 2.. / H1 = 2  =>  5 pairs (_) / H2 = 2  =>  0 pairs (_)
A4,C4: 2.. / A4 = 2  =>  1 pairs (_) / C4 = 2  =>  1 pairs (_)
D1,F2: 4.. / D1 = 4  =>  2 pairs (_) / F2 = 4  =>  0 pairs (_)
G5,I6: 4.. / G5 = 4  =>  3 pairs (_) / I6 = 4  =>  2 pairs (_)
G5,G9: 4.. / G5 = 4  =>  3 pairs (_) / G9 = 4  =>  2 pairs (_)
E5,E6: 7.. / E5 = 7  =>  0 pairs (_) / E6 = 7  =>  0 pairs (_)
H4,I4: 8.. / H4 = 8  =>  0 pairs (_) / I4 = 8  =>  6 pairs (_)
D4,F4: 9.. / D4 = 9  =>  0 pairs (_) / F4 = 9  =>  2 pairs (_)
H7,H8: 9.. / H7 = 9  =>  1 pairs (_) / H8 = 9  =>  2 pairs (_)
* DURATION: 0:00:06.774353  START: 02:51:15.974249  END: 02:51:22.748602 2020-11-25
* CP COUNT: (9)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
H4,I4: 8.. / H4 = 8  =>  0 pairs (X) / I4 = 8 ==>  0 pairs (*)
* DURATION: 0:00:11.225338  START: 02:51:22.749604  END: 02:51:33.974942 2020-11-25
* REASONING H4,I4: 8..
* PRF # I4: 8 # F2: 1,9 => SOL
* STA # I4: 8 + F2: 1,9
* CNT   1 HDP CHAINS /   3 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

1099;L107;elev;21;11.30;11.30;2.60

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for H4,I4: 8..:

* INC # I4: 8 # E2: 1,9 => UNS
* PRF # I4: 8 # F2: 1,9 => SOL
* STA # I4: 8 + F2: 1,9
* CNT   2 HDP CHAINS /   3 HYP OPENED