Analysis of xx-ph-00019514-KZ1C-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7.....7...6......5..87..8....54....43...2.....4...1.7...49.....1...6.....2...3 initial

Autosolve

position: 98.7.....7...6......5..87..8....54....43...2.....4...1.7...49.....1...6.....2...3 autosolve
Autosolve

Pair Reduction Variants

Deep Pair Reduction

Deep Pair Reduction

Time used: 0:00:00.159735

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000013

List of important HDP chains detected for C4,C6: 7..:

* DIS # C4: 7 # E5: 1,9 => CTR => E5: 7,8
* DIS # C4: 7 + E5: 7,8 # B4: 1,9 => CTR => B4: 2,3,6
* DIS # C4: 7 + E5: 7,8 + B4: 2,3,6 # H6: 3,9 => CTR => H6: 5,7,8
* DIS # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 # I5: 6,9 => CTR => I5: 5,7,8
* DIS # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 # E8: 3,5 => CTR => E8: 7,8,9
* PRF # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 + E8: 7,8,9 # E7: 8 => SOL
* STA # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 + E8: 7,8,9 + E7: 8
* CNT   6 HDP CHAINS /  18 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.....7...6......5..87..8....54....43...2.....4...1.7...49.....1...6.....2...3 initial
98.7.....7...6......5..87..8....54....43...2.....4...1.7...49.....1...6.....2...3 autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* PAIRS (2)
I8: 4,7
H9: 4,7

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
H7,G9: 1.. / H7 = 1  =>  4 pairs (_) / G9 = 1  =>  3 pairs (_)
I7,G8: 2.. / I7 = 2  =>  4 pairs (_) / G8 = 2  =>  3 pairs (_)
D2,D3: 4.. / D2 = 4  =>  4 pairs (_) / D3 = 4  =>  2 pairs (_)
H1,I1: 4.. / H1 = 4  =>  2 pairs (_) / I1 = 4  =>  5 pairs (_)
I8,H9: 4.. / I8 = 4  =>  2 pairs (_) / H9 = 4  =>  5 pairs (_)
B2,D2: 4.. / B2 = 4  =>  2 pairs (_) / D2 = 4  =>  4 pairs (_)
H1,H9: 4.. / H1 = 4  =>  2 pairs (_) / H9 = 4  =>  5 pairs (_)
I1,I8: 4.. / I1 = 4  =>  5 pairs (_) / I8 = 4  =>  2 pairs (_)
E1,D2: 5.. / E1 = 5  =>  3 pairs (_) / D2 = 5  =>  4 pairs (_)
C4,C6: 7.. / C4 = 7  =>  5 pairs (_) / C6 = 7  =>  2 pairs (_)
I8,H9: 7.. / I8 = 7  =>  5 pairs (_) / H9 = 7  =>  2 pairs (_)
F9,H9: 7.. / F9 = 7  =>  5 pairs (_) / H9 = 7  =>  2 pairs (_)
E5,D6: 8.. / E5 = 8  =>  4 pairs (_) / D6 = 8  =>  3 pairs (_)
* DURATION: 0:00:10.981533  START: 19:06:21.493362  END: 19:06:32.474895 2020-12-06
* CP COUNT: (13)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
F9,H9: 7.. / F9 = 7 ==>  5 pairs (_) / H9 = 7 ==>  2 pairs (_)
I8,H9: 7.. / I8 = 7 ==>  5 pairs (_) / H9 = 7 ==>  2 pairs (_)
C4,C6: 7.. / C4 = 7 ==>  0 pairs (*) / C6 = 7  =>  0 pairs (X)
* DURATION: 0:01:08.963877  START: 19:06:33.414522  END: 19:07:42.378399 2020-12-06
* REASONING C4,C6: 7..
* DIS # C4: 7 # E5: 1,9 => CTR => E5: 7,8
* DIS # C4: 7 + E5: 7,8 # B4: 1,9 => CTR => B4: 2,3,6
* DIS # C4: 7 + E5: 7,8 + B4: 2,3,6 # H6: 3,9 => CTR => H6: 5,7,8
* DIS # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 # I5: 6,9 => CTR => I5: 5,7,8
* DIS # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 # E8: 3,5 => CTR => E8: 7,8,9
* PRF # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 + E8: 7,8,9 # E7: 8 => SOL
* STA # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 + E8: 7,8,9 + E7: 8
* CNT   6 HDP CHAINS /  18 HYP OPENED
* DCP COUNT: (3)
* SOLUTION FOUND

Header Info

19514;KZ1C;GP;23;11.30;11.30;2.80

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for F9,H9: 7..:

* INC # F9: 7 # F6: 2,9 => UNS
* INC # F9: 7 # F6: 6 => UNS
* INC # F9: 7 # B4: 2,9 => UNS
* INC # F9: 7 # C4: 2,9 => UNS
* INC # F9: 7 # D2: 2,9 => UNS
* INC # F9: 7 # D3: 2,9 => UNS
* INC # F9: 7 # F5: 1,9 => UNS
* INC # F9: 7 # F5: 6 => UNS
* INC # F9: 7 # B4: 1,9 => UNS
* INC # F9: 7 # C4: 1,9 => UNS
* INC # F9: 7 # E3: 1,9 => UNS
* INC # F9: 7 # E3: 3 => UNS
* INC # F9: 7 # I5: 6,9 => UNS
* INC # F9: 7 # I5: 5,8 => UNS
* INC # F9: 7 # B4: 6,9 => UNS
* INC # F9: 7 # C4: 6,9 => UNS
* INC # F9: 7 # I3: 6,9 => UNS
* INC # F9: 7 # I3: 2 => UNS
* INC # F9: 7 # D9: 5,6 => UNS
* INC # F9: 7 # D9: 9 => UNS
* INC # F9: 7 # A7: 5,6 => UNS
* INC # F9: 7 # A7: 1,2,3 => UNS
* INC # F9: 7 # E8: 3,9 => UNS
* INC # F9: 7 # E8: 5,8 => UNS
* INC # F9: 7 # B8: 3,9 => UNS
* INC # F9: 7 # C8: 3,9 => UNS
* INC # F9: 7 # F2: 3,9 => UNS
* INC # F9: 7 # F2: 1,2 => UNS
* INC # F9: 7 => UNS
* INC # H9: 7 # H6: 3,9 => UNS
* INC # H9: 7 # H6: 5,8 => UNS
* INC # H9: 7 # B4: 3,9 => UNS
* INC # H9: 7 # C4: 3,9 => UNS
* INC # H9: 7 # H2: 3,9 => UNS
* INC # H9: 7 # H3: 3,9 => UNS
* INC # H9: 7 # D9: 6,9 => UNS
* INC # H9: 7 # D9: 5,8 => UNS
* INC # H9: 7 # B9: 6,9 => UNS
* INC # H9: 7 # C9: 6,9 => UNS
* INC # H9: 7 # F5: 6,9 => UNS
* INC # H9: 7 # F6: 6,9 => UNS
* INC # H9: 7 => UNS
* CNT  42 HDP CHAINS /  42 HYP OPENED

Full list of HDP chains traversed for I8,H9: 7..:

* INC # I8: 7 # F6: 2,9 => UNS
* INC # I8: 7 # F6: 6 => UNS
* INC # I8: 7 # B4: 2,9 => UNS
* INC # I8: 7 # C4: 2,9 => UNS
* INC # I8: 7 # D2: 2,9 => UNS
* INC # I8: 7 # D3: 2,9 => UNS
* INC # I8: 7 # F5: 1,9 => UNS
* INC # I8: 7 # F5: 6 => UNS
* INC # I8: 7 # B4: 1,9 => UNS
* INC # I8: 7 # C4: 1,9 => UNS
* INC # I8: 7 # E3: 1,9 => UNS
* INC # I8: 7 # E3: 3 => UNS
* INC # I8: 7 # I5: 6,9 => UNS
* INC # I8: 7 # I5: 5,8 => UNS
* INC # I8: 7 # B4: 6,9 => UNS
* INC # I8: 7 # C4: 6,9 => UNS
* INC # I8: 7 # I3: 6,9 => UNS
* INC # I8: 7 # I3: 2 => UNS
* INC # I8: 7 # D9: 5,6 => UNS
* INC # I8: 7 # D9: 9 => UNS
* INC # I8: 7 # A7: 5,6 => UNS
* INC # I8: 7 # A7: 1,2,3 => UNS
* INC # I8: 7 # E8: 3,9 => UNS
* INC # I8: 7 # E8: 5,8 => UNS
* INC # I8: 7 # B8: 3,9 => UNS
* INC # I8: 7 # C8: 3,9 => UNS
* INC # I8: 7 # F2: 3,9 => UNS
* INC # I8: 7 # F2: 1,2 => UNS
* INC # I8: 7 => UNS
* INC # H9: 7 # H6: 3,9 => UNS
* INC # H9: 7 # H6: 5,8 => UNS
* INC # H9: 7 # B4: 3,9 => UNS
* INC # H9: 7 # C4: 3,9 => UNS
* INC # H9: 7 # H2: 3,9 => UNS
* INC # H9: 7 # H3: 3,9 => UNS
* INC # H9: 7 # D9: 6,9 => UNS
* INC # H9: 7 # D9: 5,8 => UNS
* INC # H9: 7 # B9: 6,9 => UNS
* INC # H9: 7 # C9: 6,9 => UNS
* INC # H9: 7 # F5: 6,9 => UNS
* INC # H9: 7 # F6: 6,9 => UNS
* INC # H9: 7 => UNS
* CNT  42 HDP CHAINS /  42 HYP OPENED

Full list of HDP chains traversed for C4,C6: 7..:

* DIS # C4: 7 # E5: 1,9 => CTR => E5: 7,8
* INC # C4: 7 + E5: 7,8 # F5: 1,9 => UNS
* INC # C4: 7 + E5: 7,8 # F5: 1,9 => UNS
* INC # C4: 7 + E5: 7,8 # F5: 6,7 => UNS
* DIS # C4: 7 + E5: 7,8 # B4: 1,9 => CTR => B4: 2,3,6
* DIS # C4: 7 + E5: 7,8 + B4: 2,3,6 # H6: 3,9 => CTR => H6: 5,7,8
* INC # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 # H2: 3,9 => UNS
* INC # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 # H3: 3,9 => UNS
* DIS # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 # I5: 6,9 => CTR => I5: 5,7,8
* INC # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 # I3: 6,9 => UNS
* INC # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 # I3: 2 => UNS
* INC # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 # G1: 3,5 => UNS
* INC # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 # H1: 3,5 => UNS
* INC # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 # E7: 3,5 => UNS
* DIS # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 # E8: 3,5 => CTR => E8: 7,8,9
* INC # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 + E8: 7,8,9 # E7: 3,5 => UNS
* PRF # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 + E8: 7,8,9 # E7: 8 => SOL
* STA # C4: 7 + E5: 7,8 + B4: 2,3,6 + H6: 5,7,8 + I5: 5,7,8 + E8: 7,8,9 + E7: 8
* CNT  17 HDP CHAINS /  18 HYP OPENED