Analysis of xx-ph-00034768-12_05-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7.....6...5.9...........5...8.6.....4...3......2..7.9..1.5....5..3..2..1....4. initial

Autosolve

position: 98.7.....6...5.9...5.......5...8.6.....4...3......2..7.9..1.5....5..3..2..1....4. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

Time used: 0:00:00.000006

List of important HDP chains detected for G8,H8: 1..:

* DIS # H8: 1 # G6: 8 => CTR => G6: 1,4
* DIS # H8: 1 + G6: 1,4 # A7: 2,8 => CTR => A7: 3,4,7
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 # C7: 3,4,7 => CTR => C7: 2,8
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 + C7: 2,8 # G9: 3 => CTR => G9: 7,8
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 + C7: 2,8 + G9: 7,8 # A6: 1,8 => CTR => A6: 3
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 + C7: 2,8 + G9: 7,8 + A6: 3 => CTR => H8: 6,7,8,9
* STA H8: 6,7,8,9
* CNT   6 HDP CHAINS /  20 HYP OPENED

List of important HDP chains detected for H8,I9: 9..:

* DIS # H8: 9 # D9: 6,8 => CTR => D9: 2,5,9
* CNT   1 HDP CHAINS /  51 HYP OPENED

List of important HDP chains detected for F7,E8: 4..:

* DIS # E8: 4 # A7: 7,8 => CTR => A7: 2,3,4
* PRF # E8: 4 + A7: 2,3,4 # B9: 6,7 => SOL
* STA # E8: 4 + A7: 2,3,4 + B9: 6,7
* CNT   2 HDP CHAINS /  22 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...........5...8.6.....4...3......2..7.9..1.5....5..3..2..1....4. initial
98.7.....6...5.9...5.......5...8.6.....4...3......2..7.9..1.5....5..3..2..1....4. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
B2,A3: 1.. / B2 = 1  =>  1 pairs (_) / A3 = 1  =>  0 pairs (_)
G8,H8: 1.. / G8 = 1  =>  2 pairs (_) / H8 = 1  =>  4 pairs (_)
H4,G5: 2.. / H4 = 2  =>  1 pairs (_) / G5 = 2  =>  1 pairs (_)
I4,G6: 4.. / I4 = 4  =>  1 pairs (_) / G6 = 4  =>  1 pairs (_)
F7,E8: 4.. / F7 = 4  =>  2 pairs (_) / E8 = 4  =>  2 pairs (_)
H1,I1: 5.. / H1 = 5  =>  0 pairs (_) / I1 = 5  =>  0 pairs (_)
F5,D6: 5.. / F5 = 5  =>  0 pairs (_) / D6 = 5  =>  0 pairs (_)
I5,H6: 5.. / I5 = 5  =>  0 pairs (_) / H6 = 5  =>  0 pairs (_)
D9,F9: 5.. / D9 = 5  =>  0 pairs (_) / F9 = 5  =>  0 pairs (_)
F5,I5: 5.. / F5 = 5  =>  0 pairs (_) / I5 = 5  =>  0 pairs (_)
D6,H6: 5.. / D6 = 5  =>  0 pairs (_) / H6 = 5  =>  0 pairs (_)
D6,D9: 5.. / D6 = 5  =>  0 pairs (_) / D9 = 5  =>  0 pairs (_)
F5,F9: 5.. / F5 = 5  =>  0 pairs (_) / F9 = 5  =>  0 pairs (_)
H1,H6: 5.. / H1 = 5  =>  0 pairs (_) / H6 = 5  =>  0 pairs (_)
I1,I5: 5.. / I1 = 5  =>  0 pairs (_) / I5 = 5  =>  0 pairs (_)
H8,I9: 9.. / H8 = 9  =>  4 pairs (_) / I9 = 9  =>  1 pairs (_)
* DURATION: 0:00:10.743314  START: 03:45:32.543186  END: 03:45:43.286500 2020-12-15
* CP COUNT: (16)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
G8,H8: 1.. / G8 = 1  =>  2 pairs (_) / H8 = 1 ==>  0 pairs (X)
H8,I9: 9.. / H8 = 9 ==>  4 pairs (_) / I9 = 9 ==>  1 pairs (_)
F7,E8: 4.. / F7 = 4 ==>  2 pairs (_) / E8 = 4 ==>  0 pairs (*)
* DURATION: 0:00:52.263146  START: 03:45:43.287072  END: 03:46:35.550218 2020-12-15
* REASONING G8,H8: 1..
* DIS # H8: 1 # G6: 8 => CTR => G6: 1,4
* DIS # H8: 1 + G6: 1,4 # A7: 2,8 => CTR => A7: 3,4,7
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 # C7: 3,4,7 => CTR => C7: 2,8
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 + C7: 2,8 # G9: 3 => CTR => G9: 7,8
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 + C7: 2,8 + G9: 7,8 # A6: 1,8 => CTR => A6: 3
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 + C7: 2,8 + G9: 7,8 + A6: 3 => CTR => H8: 6,7,8,9
* STA H8: 6,7,8,9
* CNT   6 HDP CHAINS /  20 HYP OPENED
* REASONING H8,I9: 9..
* DIS # H8: 9 # D9: 6,8 => CTR => D9: 2,5,9
* CNT   1 HDP CHAINS /  51 HYP OPENED
* REASONING F7,E8: 4..
* DIS # E8: 4 # A7: 7,8 => CTR => A7: 2,3,4
* PRF # E8: 4 + A7: 2,3,4 # B9: 6,7 => SOL
* STA # E8: 4 + A7: 2,3,4 + B9: 6,7
* CNT   2 HDP CHAINS /  22 HYP OPENED
* DCP COUNT: (3)
* SOLUTION FOUND

Header Info

34768;12_05;GP;21;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for G8,H8: 1..:

* INC # H8: 1 # C4: 2,9 => UNS
* INC # H8: 1 # C4: 3,4,7 => UNS
* INC # H8: 1 # G6: 1,4 => UNS
* DIS # H8: 1 # G6: 8 => CTR => G6: 1,4
* INC # H8: 1 + G6: 1,4 # B4: 1,4 => UNS
* INC # H8: 1 + G6: 1,4 # B4: 2,3,7 => UNS
* INC # H8: 1 + G6: 1,4 # I1: 1,4 => UNS
* INC # H8: 1 + G6: 1,4 # I2: 1,4 => UNS
* INC # H8: 1 + G6: 1,4 # I3: 1,4 => UNS
* INC # H8: 1 + G6: 1,4 # D9: 2,8 => UNS
* INC # H8: 1 + G6: 1,4 # D9: 5,6 => UNS
* DIS # H8: 1 + G6: 1,4 # A7: 2,8 => CTR => A7: 3,4,7
* INC # H8: 1 + G6: 1,4 + A7: 3,4,7 # C7: 2,8 => UNS
* INC # H8: 1 + G6: 1,4 + A7: 3,4,7 # C7: 2,8 => UNS
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 # C7: 3,4,7 => CTR => C7: 2,8
* INC # H8: 1 + G6: 1,4 + A7: 3,4,7 + C7: 2,8 # G9: 7,8 => UNS
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 + C7: 2,8 # G9: 3 => CTR => G9: 7,8
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 + C7: 2,8 + G9: 7,8 # A6: 1,8 => CTR => A6: 3
* DIS # H8: 1 + G6: 1,4 + A7: 3,4,7 + C7: 2,8 + G9: 7,8 + A6: 3 => CTR => H8: 6,7,8,9
* INC H8: 6,7,8,9 # G8: 1 => UNS
* STA H8: 6,7,8,9
* CNT  20 HDP CHAINS /  20 HYP OPENED

Full list of HDP chains traversed for H8,I9: 9..:

* INC # H8: 9 # B4: 1,2 => UNS
* INC # H8: 9 # B4: 3,4,7 => UNS
* INC # H8: 9 # H1: 1,2 => UNS
* INC # H8: 9 # H2: 1,2 => UNS
* INC # H8: 9 # H3: 1,2 => UNS
* INC # H8: 9 # A5: 2,8 => UNS
* INC # H8: 9 # C5: 2,8 => UNS
* INC # H8: 9 # G3: 2,8 => UNS
* INC # H8: 9 # G3: 3,4,7 => UNS
* INC # H8: 9 # A6: 4,8 => UNS
* INC # H8: 9 # C6: 4,8 => UNS
* INC # H8: 9 # G3: 4,8 => UNS
* INC # H8: 9 # G3: 2,3,7 => UNS
* INC # H8: 9 # D7: 6,8 => UNS
* INC # H8: 9 # F7: 6,8 => UNS
* DIS # H8: 9 # D9: 6,8 => CTR => D9: 2,5,9
* INC # H8: 9 + D9: 2,5,9 # F9: 6,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # D3: 6,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # D3: 1,2,3,9 => UNS
* INC # H8: 9 + D9: 2,5,9 # D7: 6,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # F7: 6,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # F9: 6,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # D3: 6,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # D3: 1,2,3,9 => UNS
* INC # H8: 9 + D9: 2,5,9 # B4: 1,2 => UNS
* INC # H8: 9 + D9: 2,5,9 # B4: 3,4,7 => UNS
* INC # H8: 9 + D9: 2,5,9 # H1: 1,2 => UNS
* INC # H8: 9 + D9: 2,5,9 # H2: 1,2 => UNS
* INC # H8: 9 + D9: 2,5,9 # H3: 1,2 => UNS
* INC # H8: 9 + D9: 2,5,9 # A5: 2,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # C5: 2,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # G3: 2,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # G3: 3,4,7 => UNS
* INC # H8: 9 + D9: 2,5,9 # A6: 4,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # C6: 4,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # G3: 4,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # G3: 2,3,7 => UNS
* INC # H8: 9 + D9: 2,5,9 # D7: 6,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # F7: 6,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # F9: 6,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # D3: 6,8 => UNS
* INC # H8: 9 + D9: 2,5,9 # D3: 1,2,3,9 => UNS
* INC # H8: 9 + D9: 2,5,9 => UNS
* INC # I9: 9 # G6: 1,4 => UNS
* INC # I9: 9 # G6: 8 => UNS
* INC # I9: 9 # B4: 1,4 => UNS
* INC # I9: 9 # B4: 2,3,7 => UNS
* INC # I9: 9 # I1: 1,4 => UNS
* INC # I9: 9 # I2: 1,4 => UNS
* INC # I9: 9 # I3: 1,4 => UNS
* INC # I9: 9 => UNS
* CNT  51 HDP CHAINS /  51 HYP OPENED

Full list of HDP chains traversed for F7,E8: 4..:

* INC # F7: 4 # D3: 1,6 => UNS
* INC # F7: 4 # F3: 1,6 => UNS
* INC # F7: 4 # H1: 1,6 => UNS
* INC # F7: 4 # I1: 1,6 => UNS
* INC # F7: 4 # F5: 1,6 => UNS
* INC # F7: 4 # F5: 5,7,9 => UNS
* INC # F7: 4 # D2: 1,8 => UNS
* INC # F7: 4 # D3: 1,8 => UNS
* INC # F7: 4 # F3: 1,8 => UNS
* INC # F7: 4 # H2: 1,8 => UNS
* INC # F7: 4 # I2: 1,8 => UNS
* INC # F7: 4 => UNS
* DIS # E8: 4 # A7: 7,8 => CTR => A7: 2,3,4
* INC # E8: 4 + A7: 2,3,4 # C7: 7,8 => UNS
* INC # E8: 4 + A7: 2,3,4 # A9: 7,8 => UNS
* INC # E8: 4 + A7: 2,3,4 # G8: 7,8 => UNS
* INC # E8: 4 + A7: 2,3,4 # H8: 7,8 => UNS
* INC # E8: 4 + A7: 2,3,4 # A5: 7,8 => UNS
* INC # E8: 4 + A7: 2,3,4 # A5: 1,2 => UNS
* INC # E8: 4 + A7: 2,3,4 # C7: 6,7 => UNS
* PRF # E8: 4 + A7: 2,3,4 # B9: 6,7 => SOL
* STA # E8: 4 + A7: 2,3,4 + B9: 6,7
* CNT  21 HDP CHAINS /  22 HYP OPENED