Analysis of xx-ph-00025617-KC40b-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6..7...96.....68.....5..4...3..2......1..9.8.5....5.7.8.....1...4......3..2 initial

Autosolve

position: 98.7..6..7...96.....68.....5..4...3..2......1..9.8.5....5.7.8.....1.8.4......3..2 autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000005

List of important HDP chains detected for E8,I8: 5..:

* DIS # E8: 5 # H3: 1,2 => CTR => H3: 7,9
* PRF # E8: 5 + H3: 7,9 # D5: 6,9 => SOL
* STA # E8: 5 + H3: 7,9 + D5: 6,9
* CNT   2 HDP CHAINS /  23 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...96.....68.....5..4...3..2......1..9.8.5....5.7.8.....1...4......3..2 initial
98.7..6..7...96.....68.....5..4...3..2......1..9.8.5....5.7.8.....1.8.4......3..2 autosolve

Classification

level: deep

Pairing Analysis

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* CONSTRAINT PAIRS (AUTO SOLVE)
G4,H6: 2.. / G4 = 2  =>  2 pairs (_) / H6 = 2  =>  4 pairs (_)
G5,I6: 4.. / G5 = 4  =>  1 pairs (_) / I6 = 4  =>  2 pairs (_)
F7,E9: 4.. / F7 = 4  =>  1 pairs (_) / E9 = 4  =>  1 pairs (_)
B2,B3: 5.. / B2 = 5  =>  1 pairs (_) / B3 = 5  =>  0 pairs (_)
I8,H9: 5.. / I8 = 5  =>  2 pairs (_) / H9 = 5  =>  4 pairs (_)
E8,I8: 5.. / E8 = 5  =>  4 pairs (_) / I8 = 5  =>  2 pairs (_)
H2,I2: 8.. / H2 = 8  =>  1 pairs (_) / I2 = 8  =>  0 pairs (_)
I4,H5: 8.. / I4 = 8  =>  1 pairs (_) / H5 = 8  =>  0 pairs (_)
A9,C9: 8.. / A9 = 8  =>  0 pairs (_) / C9 = 8  =>  1 pairs (_)
C4,I4: 8.. / C4 = 8  =>  0 pairs (_) / I4 = 8  =>  1 pairs (_)
A5,A9: 8.. / A5 = 8  =>  1 pairs (_) / A9 = 8  =>  0 pairs (_)
H2,H5: 8.. / H2 = 8  =>  1 pairs (_) / H5 = 8  =>  0 pairs (_)
I2,I4: 8.. / I2 = 8  =>  0 pairs (_) / I4 = 8  =>  1 pairs (_)
* DURATION: 0:00:07.805159  START: 20:39:06.777602  END: 20:39:14.582761 2020-12-08
* CP COUNT: (13)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
E8,I8: 5.. / E8 = 5 ==>  0 pairs (*) / I8 = 5  =>  0 pairs (X)
* DURATION: 0:00:18.849476  START: 20:39:14.583306  END: 20:39:33.432782 2020-12-08
* REASONING E8,I8: 5..
* DIS # E8: 5 # H3: 1,2 => CTR => H3: 7,9
* PRF # E8: 5 + H3: 7,9 # D5: 6,9 => SOL
* STA # E8: 5 + H3: 7,9 + D5: 6,9
* CNT   2 HDP CHAINS /  23 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

25617;KC40b;GP;24;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for E8,I8: 5..:

* INC # E8: 5 # G2: 1,2 => UNS
* INC # E8: 5 # H2: 1,2 => UNS
* INC # E8: 5 # G3: 1,2 => UNS
* DIS # E8: 5 # H3: 1,2 => CTR => H3: 7,9
* INC # E8: 5 + H3: 7,9 # C1: 1,2 => UNS
* INC # E8: 5 + H3: 7,9 # E1: 1,2 => UNS
* INC # E8: 5 + H3: 7,9 # F1: 1,2 => UNS
* INC # E8: 5 + H3: 7,9 # G2: 1,2 => UNS
* INC # E8: 5 + H3: 7,9 # H2: 1,2 => UNS
* INC # E8: 5 + H3: 7,9 # G3: 1,2 => UNS
* INC # E8: 5 + H3: 7,9 # C1: 1,2 => UNS
* INC # E8: 5 + H3: 7,9 # E1: 1,2 => UNS
* INC # E8: 5 + H3: 7,9 # F1: 1,2 => UNS
* INC # E8: 5 + H3: 7,9 # D5: 3,6 => UNS
* INC # E8: 5 + H3: 7,9 # D6: 3,6 => UNS
* INC # E8: 5 + H3: 7,9 # A5: 3,6 => UNS
* INC # E8: 5 + H3: 7,9 # A5: 4,8 => UNS
* INC # E8: 5 + H3: 7,9 # D7: 6,9 => UNS
* INC # E8: 5 + H3: 7,9 # D7: 2 => UNS
* INC # E8: 5 + H3: 7,9 # B9: 6,9 => UNS
* INC # E8: 5 + H3: 7,9 # B9: 1,4,7 => UNS
* PRF # E8: 5 + H3: 7,9 # D5: 6,9 => SOL
* STA # E8: 5 + H3: 7,9 + D5: 6,9
* CNT  22 HDP CHAINS /  23 HYP OPENED