Analysis of xx-ph-00033141-2012_04-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7.....6...5.9....4....3..9..8.7....2..4.1....6......5.8..6.......1..3........2 initial

Autosolve

position: 98.7.....6...5.9....4....3..9..8.7....2..4.1....6......5.8..6.......1..3........2 autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000008

List of important HDP chains detected for G5,G6: 3..:

* DIS # G5: 3 # E6: 7,9 => CTR => E6: 1,2,3
* CNT   1 HDP CHAINS /  38 HYP OPENED

List of important HDP chains detected for B5,I5: 6..:

* DIS # I5: 6 # F2: 2,3 => CTR => F2: 8
* PRF # I5: 6 + F2: 8 # F7: 2,3 => SOL
* STA # I5: 6 + F2: 8 + F7: 2,3
* CNT   2 HDP CHAINS /   7 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...5.9....4....3..9..8.7....2..4.1....6......5.8..6.......1..3........2 initial
98.7.....6...5.9....4....3..9..8.7....2..4.1....6......5.8..6.......1..3........2 autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
D4,E6: 1.. / D4 = 1  =>  1 pairs (_) / E6 = 1  =>  0 pairs (_)
I7,G9: 1.. / I7 = 1  =>  0 pairs (_) / G9 = 1  =>  0 pairs (_)
G5,G6: 3.. / G5 = 3  =>  3 pairs (_) / G6 = 3  =>  1 pairs (_)
E1,D2: 4.. / E1 = 4  =>  0 pairs (_) / D2 = 4  =>  0 pairs (_)
C1,A3: 5.. / C1 = 5  =>  1 pairs (_) / A3 = 5  =>  1 pairs (_)
C4,B5: 6.. / C4 = 6  =>  3 pairs (_) / B5 = 6  =>  0 pairs (_)
B5,I5: 6.. / B5 = 6  =>  0 pairs (_) / I5 = 6  =>  3 pairs (_)
H1,H4: 6.. / H1 = 6  =>  1 pairs (_) / H4 = 6  =>  1 pairs (_)
F2,F3: 8.. / F2 = 8  =>  0 pairs (_) / F3 = 8  =>  1 pairs (_)
* DURATION: 0:00:05.362117  START: 12:46:37.640562  END: 12:46:43.002679 2020-10-20
* CP COUNT: (9)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
G5,G6: 3.. / G5 = 3 ==>  3 pairs (_) / G6 = 3 ==>  1 pairs (_)
B5,I5: 6.. / B5 = 6  =>  0 pairs (X) / I5 = 6 ==>  0 pairs (*)
* DURATION: 0:00:25.228199  START: 12:46:43.003422  END: 12:47:08.231621 2020-10-20
* REASONING G5,G6: 3..
* DIS # G5: 3 # E6: 7,9 => CTR => E6: 1,2,3
* CNT   1 HDP CHAINS /  38 HYP OPENED
* REASONING B5,I5: 6..
* DIS # I5: 6 # F2: 2,3 => CTR => F2: 8
* PRF # I5: 6 + F2: 8 # F7: 2,3 => SOL
* STA # I5: 6 + F2: 8 + F7: 2,3
* CNT   2 HDP CHAINS /   7 HYP OPENED
* DCP COUNT: (2)
* SOLUTION FOUND

Header Info

33141;2012_04;GP;21;11.40;11.40;10.60

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for G5,G6: 3..:

* INC # G5: 3 # B8: 6,7 => UNS
* INC # G5: 3 # B9: 6,7 => UNS
* INC # G5: 3 # F6: 5,9 => UNS
* INC # G5: 3 # F6: 2,3,7 => UNS
* INC # G5: 3 # I5: 5,9 => UNS
* INC # G5: 3 # I5: 6,8 => UNS
* INC # G5: 3 # D8: 5,9 => UNS
* INC # G5: 3 # D9: 5,9 => UNS
* DIS # G5: 3 # E6: 7,9 => CTR => E6: 1,2,3
* INC # G5: 3 + E6: 1,2,3 # F6: 7,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # F6: 7,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # F6: 2,3,5 => UNS
* INC # G5: 3 + E6: 1,2,3 # E7: 7,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # E8: 7,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # E9: 7,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # B8: 6,7 => UNS
* INC # G5: 3 + E6: 1,2,3 # B9: 6,7 => UNS
* INC # G5: 3 + E6: 1,2,3 # F6: 5,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # F6: 2,3,7 => UNS
* INC # G5: 3 + E6: 1,2,3 # I5: 5,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # I5: 6,8 => UNS
* INC # G5: 3 + E6: 1,2,3 # D8: 5,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # D9: 5,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # F6: 7,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # F6: 2,3,5 => UNS
* INC # G5: 3 + E6: 1,2,3 # E7: 7,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # E8: 7,9 => UNS
* INC # G5: 3 + E6: 1,2,3 # E9: 7,9 => UNS
* INC # G5: 3 + E6: 1,2,3 => UNS
* INC # G6: 3 # I5: 5,8 => UNS
* INC # G6: 3 # H6: 5,8 => UNS
* INC # G6: 3 # I6: 5,8 => UNS
* INC # G6: 3 # A5: 5,8 => UNS
* INC # G6: 3 # A5: 3,7 => UNS
* INC # G6: 3 # G3: 5,8 => UNS
* INC # G6: 3 # G8: 5,8 => UNS
* INC # G6: 3 # G9: 5,8 => UNS
* INC # G6: 3 => UNS
* CNT  38 HDP CHAINS /  38 HYP OPENED

Full list of HDP chains traversed for B5,I5: 6..:

* INC # I5: 6 # E1: 2,3 => UNS
* INC # I5: 6 # D2: 2,3 => UNS
* DIS # I5: 6 # F2: 2,3 => CTR => F2: 8
* INC # I5: 6 + F2: 8 # F4: 2,3 => UNS
* INC # I5: 6 + F2: 8 # F6: 2,3 => UNS
* PRF # I5: 6 + F2: 8 # F7: 2,3 => SOL
* STA # I5: 6 + F2: 8 + F7: 2,3
* CNT   6 HDP CHAINS /   7 HYP OPENED