Analysis of xx-ph-00019850-KZ1C-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6....5.4.......9...3.6.....9...3.....8...2.5...1.2..7.1....75.1........4..7 initial

Autosolve

position: 98.7..6....5.4.......9...3.6.....9...3.....8...2.5...1.2..7.1....75.1........4..7 autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000007

List of important HDP chains detected for H2,I2: 9..:

* DIS # H2: 9 # I8: 2,8 => CTR => I8: 3,4,6,9
* CNT   1 HDP CHAINS /  46 HYP OPENED

List of important HDP chains detected for C1,A2: 3..:

* DIS # A2: 3 # C3: 1,4 => CTR => C3: 6
* DIS # A2: 3 + C3: 6 # C4: 1,4 => CTR => C4: 8
* DIS # A2: 3 + C3: 6 + C4: 8 # C5: 9 => CTR => C5: 1,4
* DIS # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 # B3: 7 => CTR => B3: 1,4
* DIS # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 + B3: 1,4 # A7: 4,8 => CTR => A7: 5
* PRF # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 + B3: 1,4 + A7: 5 => SOL
* STA A2: 3
* CNT   6 HDP CHAINS /  16 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....5.4.......9...3.6.....9...3.....8...2.5...1.2..7.1....75.1........4..7 initial
98.7..6....5.4.......9...3.6.....9...3.....8...2.5...1.2..7.1....75.1........4..7 autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
H1,H2: 1.. / H1 = 1  =>  2 pairs (_) / H2 = 1  =>  2 pairs (_)
A2,A3: 2.. / A2 = 2  =>  4 pairs (_) / A3 = 2  =>  0 pairs (_)
C1,A2: 3.. / C1 = 3  =>  2 pairs (_) / A2 = 3  =>  3 pairs (_)
I4,G6: 3.. / I4 = 3  =>  1 pairs (_) / G6 = 3  =>  0 pairs (_)
F1,F3: 5.. / F1 = 5  =>  1 pairs (_) / F3 = 5  =>  1 pairs (_)
B4,A5: 5.. / B4 = 5  =>  0 pairs (_) / A5 = 5  =>  2 pairs (_)
B4,B9: 5.. / B4 = 5  =>  0 pairs (_) / B9 = 5  =>  2 pairs (_)
I5,H6: 6.. / I5 = 6  =>  1 pairs (_) / H6 = 6  =>  0 pairs (_)
C4,A6: 8.. / C4 = 8  =>  1 pairs (_) / A6 = 8  =>  2 pairs (_)
H2,I2: 9.. / H2 = 9  =>  4 pairs (_) / I2 = 9  =>  0 pairs (_)
C5,B6: 9.. / C5 = 9  =>  1 pairs (_) / B6 = 9  =>  2 pairs (_)
B6,F6: 9.. / B6 = 9  =>  2 pairs (_) / F6 = 9  =>  1 pairs (_)
* DURATION: 0:00:06.745824  START: 22:59:39.807866  END: 22:59:46.553690 2020-12-06
* CP COUNT: (12)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
H2,I2: 9.. / H2 = 9 ==>  4 pairs (_) / I2 = 9 ==>  0 pairs (_)
A2,A3: 2.. / A2 = 2 ==>  4 pairs (_) / A3 = 2 ==>  0 pairs (_)
C1,A2: 3.. / C1 = 3  =>  0 pairs (X) / A2 = 3 ==>  0 pairs (*)
* DURATION: 0:00:39.558146  START: 22:59:46.554298  END: 23:00:26.112444 2020-12-06
* REASONING H2,I2: 9..
* DIS # H2: 9 # I8: 2,8 => CTR => I8: 3,4,6,9
* CNT   1 HDP CHAINS /  46 HYP OPENED
* REASONING C1,A2: 3..
* DIS # A2: 3 # C3: 1,4 => CTR => C3: 6
* DIS # A2: 3 + C3: 6 # C4: 1,4 => CTR => C4: 8
* DIS # A2: 3 + C3: 6 + C4: 8 # C5: 9 => CTR => C5: 1,4
* DIS # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 # B3: 7 => CTR => B3: 1,4
* DIS # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 + B3: 1,4 # A7: 4,8 => CTR => A7: 5
* PRF # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 + B3: 1,4 + A7: 5 => SOL
* STA A2: 3
* CNT   6 HDP CHAINS /  16 HYP OPENED
* DCP COUNT: (3)
* SOLUTION FOUND

Header Info

19850;KZ1C;GP;23;11.30;11.30;10.10

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for H2,I2: 9..:

* INC # H2: 9 # C7: 3,4 => UNS
* INC # H2: 9 # C7: 6,8,9 => UNS
* INC # H2: 9 # F1: 2,3 => UNS
* INC # H2: 9 # D2: 2,3 => UNS
* INC # H2: 9 # F2: 2,3 => UNS
* INC # H2: 9 # E4: 2,3 => UNS
* INC # H2: 9 # E8: 2,3 => UNS
* INC # H2: 9 # E9: 2,3 => UNS
* INC # H2: 9 # G2: 2,8 => UNS
* INC # H2: 9 # G3: 2,8 => UNS
* INC # H2: 9 # I3: 2,8 => UNS
* INC # H2: 9 # D2: 2,8 => UNS
* INC # H2: 9 # F2: 2,8 => UNS
* DIS # H2: 9 # I8: 2,8 => CTR => I8: 3,4,6,9
* INC # H2: 9 + I8: 3,4,6,9 # G2: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # G3: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # I3: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # D2: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # F2: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # I4: 3,4 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # I4: 2,5 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # D6: 3,4 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # D6: 6,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # G8: 3,4 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # G8: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # C7: 3,4 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # C7: 6,8,9 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # F1: 2,3 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # D2: 2,3 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # F2: 2,3 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # E4: 2,3 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # E8: 2,3 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # E9: 2,3 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # G2: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # G3: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # I3: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # D2: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # F2: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # I4: 3,4 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # I4: 2,5 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # D6: 3,4 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # D6: 6,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # G8: 3,4 => UNS
* INC # H2: 9 + I8: 3,4,6,9 # G8: 2,8 => UNS
* INC # H2: 9 + I8: 3,4,6,9 => UNS
* INC # I2: 9 => UNS
* CNT  46 HDP CHAINS /  46 HYP OPENED

Full list of HDP chains traversed for A2,A3: 2..:

* INC # A2: 2 # E3: 1,2 => UNS
* INC # A2: 2 # E3: 6,8 => UNS
* INC # A2: 2 # H1: 1,2 => UNS
* INC # A2: 2 # H1: 4,5 => UNS
* INC # A2: 2 # E4: 1,2 => UNS
* INC # A2: 2 # E5: 1,2 => UNS
* INC # A2: 2 # F3: 2,5 => UNS
* INC # A2: 2 # F3: 6,8 => UNS
* INC # A2: 2 # H1: 2,5 => UNS
* INC # A2: 2 # I1: 2,5 => UNS
* INC # A2: 2 # G3: 7,8 => UNS
* INC # A2: 2 # G3: 2,5 => UNS
* INC # A2: 2 # I7: 8,9 => UNS
* INC # A2: 2 # I8: 8,9 => UNS
* INC # A2: 2 => UNS
* INC # A3: 2 => UNS
* CNT  16 HDP CHAINS /  16 HYP OPENED

Full list of HDP chains traversed for C1,A2: 3..:

* INC # A2: 3 # B3: 1,4 => UNS
* DIS # A2: 3 # C3: 1,4 => CTR => C3: 6
* INC # A2: 3 + C3: 6 # B3: 1,4 => UNS
* INC # A2: 3 + C3: 6 # B3: 7 => UNS
* INC # A2: 3 + C3: 6 # H1: 1,4 => UNS
* INC # A2: 3 + C3: 6 # H1: 2,5 => UNS
* DIS # A2: 3 + C3: 6 # C4: 1,4 => CTR => C4: 8
* INC # A2: 3 + C3: 6 + C4: 8 # C5: 1,4 => UNS
* INC # A2: 3 + C3: 6 + C4: 8 # C5: 1,4 => UNS
* DIS # A2: 3 + C3: 6 + C4: 8 # C5: 9 => CTR => C5: 1,4
* INC # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 # B3: 1,4 => UNS
* DIS # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 # B3: 7 => CTR => B3: 1,4
* INC # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 + B3: 1,4 # H1: 1,4 => UNS
* INC # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 + B3: 1,4 # H1: 2,5 => UNS
* DIS # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 + B3: 1,4 # A7: 4,8 => CTR => A7: 5
* PRF # A2: 3 + C3: 6 + C4: 8 + C5: 1,4 + B3: 1,4 + A7: 5 => SOL
* STA A2: 3
* CNT  16 HDP CHAINS /  16 HYP OPENED