Analysis of xx-ph-00016644-Kz1_b-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7..6....5.9..4......3..93..9......7...8.....2.5..6..5.....1...1...2.6....6.4.. initial

Autosolve

position: 98.7..6....5.9..4......3..93..9.....57...8.....2.5..6..5.....1...1...2.6....6.4.. autosolve
Autosolve

Pair Reduction Variants

Pair Reduction Analysis

Pair Reduction Analysis

See Appendix: Full HDP Chains for full list of HDP chains.

Pair Reduction

Pair Reduction

See Appendix: Full HDP Chains for full list of HDP chains.

Deep Pair Reduction

Deep Pair Reduction

Time used: 0:00:04.178120

See Appendix: Full HDP Chains for full list of HDP chains.

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000017

List of important HDP chains detected for F2,F4: 6..:

* DIS # F4: 6 # F1: 1,2 => CTR => F1: 4,5
* DIS # F4: 6 + F1: 4,5 # D2: 1,2 => CTR => D2: 6,8
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 # D3: 1,2 => CTR => D3: 4,5,6,8
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 # B2: 1,2 => CTR => B2: 3,6
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 # I2: 1,2 => CTR => I2: 3,7,8
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 # A2: 7 => CTR => A2: 1,2
* PRF # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # A6: 1 => SOL
* STA # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 + A6: 1
* CNT   7 HDP CHAINS /  27 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..93..9......7...8.....2.5..6..5.....1...1...2.6....6.4.. initial
98.7..6....5.9..4......3..93..9.....57...8.....2.5..6..5.....1...1...2.6....6.4.. autosolve

Classification

level: deep

Pairing Analysis

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* PAIRS (1)
C1: 3,4

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
D9,F9: 1.. / D9 = 1  =>  2 pairs (_) / F9 = 1  =>  3 pairs (_)
C1,B2: 3.. / C1 = 3  =>  1 pairs (_) / B2 = 3  =>  6 pairs (_)
F1,D3: 5.. / F1 = 5  =>  2 pairs (_) / D3 = 5  =>  1 pairs (_)
G3,G4: 5.. / G3 = 5  =>  2 pairs (_) / G4 = 5  =>  1 pairs (_)
F4,D5: 6.. / F4 = 6  =>  7 pairs (_) / D5 = 6  =>  2 pairs (_)
A7,C7: 6.. / A7 = 6  =>  1 pairs (_) / C7 = 6  =>  6 pairs (_)
C5,D5: 6.. / C5 = 6  =>  7 pairs (_) / D5 = 6  =>  2 pairs (_)
F2,F4: 6.. / F2 = 6  =>  2 pairs (_) / F4 = 6  =>  7 pairs (_)
C4,A6: 8.. / C4 = 8  =>  2 pairs (_) / A6 = 8  =>  4 pairs (_)
C5,B6: 9.. / C5 = 9  =>  4 pairs (_) / B6 = 9  =>  4 pairs (_)
B6,G6: 9.. / B6 = 9  =>  4 pairs (_) / G6 = 9  =>  4 pairs (_)
* DURATION: 0:00:08.569111  START: 22:53:53.842544  END: 22:54:02.411655 2020-12-04
* CP COUNT: (11)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
F2,F4: 6.. / F2 = 6  =>  0 pairs (X) / F4 = 6 ==>  0 pairs (*)
* DURATION: 0:00:28.179803  START: 22:54:08.780149  END: 22:54:36.959952 2020-12-04
* REASONING F2,F4: 6..
* DIS # F4: 6 # F1: 1,2 => CTR => F1: 4,5
* DIS # F4: 6 + F1: 4,5 # D2: 1,2 => CTR => D2: 6,8
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 # D3: 1,2 => CTR => D3: 4,5,6,8
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 # B2: 1,2 => CTR => B2: 3,6
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 # I2: 1,2 => CTR => I2: 3,7,8
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 # A2: 7 => CTR => A2: 1,2
* PRF # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # A6: 1 => SOL
* STA # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 + A6: 1
* CNT   7 HDP CHAINS /  27 HYP OPENED
* DCP COUNT: (1)
* SOLUTION FOUND

Header Info

16644;Kz1 b;GP;23;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Pair Reduction Analysis

Full list of HDP chains traversed:

* INC # C7: 3,4 => UNS
* INC # C7: 6,7,8,9 => UNS
* CNT   2 HDP CHAINS /   2 HYP OPENED

A2. Pair Reduction

Full list of HDP chains traversed:

* INC # C7: 3,4 => UNS
* INC # C7: 6,7,8,9 => UNS
* CNT   2 HDP CHAINS /   2 HYP OPENED

A3. Deep Pair Reduction

Full list of HDP chains traversed:

* INC # C7: 3,4 => UNS
* INC # C7: 6,7,8,9 => UNS
* INC # C7: 3,4 # B8: 3,4 => UNS
* INC # C7: 3,4 # B8: 9 => UNS
* INC # C7: 3,4 # D7: 3,4 => UNS
* INC # C7: 3,4 # E7: 3,4 => UNS
* INC # C7: 3,4 => UNS
* INC # C7: 6,7,8,9 => UNS
* CNT   8 HDP CHAINS /   8 HYP OPENED

A4. Deep Constraint Pair Analysis

Full list of HDP chains traversed for F2,F4: 6..:

* INC # F4: 6 # C7: 3,4 => UNS
* INC # F4: 6 # C7: 7,8,9 => UNS
* INC # F4: 6 # A3: 4,7 => UNS
* INC # F4: 6 # A3: 1,2 => UNS
* INC # F4: 6 # C7: 4,7 => UNS
* INC # F4: 6 # C7: 3,8,9 => UNS
* INC # F4: 6 # E1: 1,2 => UNS
* DIS # F4: 6 # F1: 1,2 => CTR => F1: 4,5
* DIS # F4: 6 + F1: 4,5 # D2: 1,2 => CTR => D2: 6,8
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 # D3: 1,2 => CTR => D3: 4,5,6,8
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 # E3: 1,2 => UNS
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 # A2: 1,2 => UNS
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 # B2: 1,2 => CTR => B2: 3,6
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 # I2: 1,2 => CTR => I2: 3,7,8
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 # A2: 1,2 => UNS
* DIS # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 # A2: 7 => CTR => A2: 1,2
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # E1: 1,2 => UNS
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # E3: 1,2 => UNS
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # A6: 1,4 => UNS
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # A6: 8 => UNS
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # E4: 1,4 => UNS
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # I4: 1,4 => UNS
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # B3: 1,4 => UNS
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # B3: 2,6 => UNS
* INC # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # A6: 4,8 => UNS
* PRF # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 # A6: 1 => SOL
* STA # F4: 6 + F1: 4,5 + D2: 6,8 + D3: 4,5,6,8 + B2: 3,6 + I2: 3,7,8 + A2: 1,2 + A6: 1
* CNT  26 HDP CHAINS /  27 HYP OPENED