Analysis of xx-ph-00033284-2012_04-base.sdk

Contents

Original Sudoku

level: deep

Original Sudoku

position: 98.7.....6.7...8......5.....4.....3...85..7.......2..1..68..9......3...4.....1.2. initial

Autosolve

position: 98.7.....6.7...8......58....4.....3...85..7.......2..1..68..9......3...4.....1.2. autosolve
Autosolve

Pair Reduction Variants

Deep Constraint Pair Analysis

Deep Constraint Pair Analysis

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 F5,D6: 3..:

* DIS # F5: 3 # E1: 4,6 => CTR => E1: 1,2
* DIS # F5: 3 + E1: 1,2 # D3: 4,6 => CTR => D3: 1,2,3,9
* DIS # F5: 3 + E1: 1,2 + D3: 1,2,3,9 # D2: 4,9 => CTR => D2: 1,2,3
* CNT   3 HDP CHAINS /  42 HYP OPENED

List of important HDP chains detected for B5,B6: 6..:

* DIS # B5: 6 # H6: 4,9 => CTR => H6: 5,6,8
* DIS # B5: 6 + H6: 5,6,8 # I4: 2,9 => CTR => I4: 5,6,8
* CNT   2 HDP CHAINS /  24 HYP OPENED

List of important HDP chains detected for E7,D8: 2..:

* PRF # E7: 2 # D4: 6,9 => SOL
* STA # E7: 2 + D4: 6,9
* CNT   1 HDP CHAINS /   6 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.....6.7...8......5.....4.....3...85..7.......2..1..68..9......3...4.....1.2. initial
98.7.....6.7...8......58....4.....3...85..7.......2..1..68..9......3...4.....1.2. autosolve

Classification

level: deep

Pairing Analysis

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
E7,D8: 2.. / E7 = 2  =>  1 pairs (_) / D8 = 2  =>  1 pairs (_)
F5,D6: 3.. / F5 = 3  =>  3 pairs (_) / D6 = 3  =>  2 pairs (_)
C1,B2: 5.. / C1 = 5  =>  1 pairs (_) / B2 = 5  =>  0 pairs (_)
F7,F8: 5.. / F7 = 5  =>  2 pairs (_) / F8 = 5  =>  2 pairs (_)
B5,B6: 6.. / B5 = 6  =>  2 pairs (_) / B6 = 6  =>  1 pairs (_)
H3,I3: 7.. / H3 = 7  =>  1 pairs (_) / I3 = 7  =>  1 pairs (_)
E4,E6: 8.. / E4 = 8  =>  0 pairs (_) / E6 = 8  =>  0 pairs (_)
I4,H6: 8.. / I4 = 8  =>  0 pairs (_) / H6 = 8  =>  0 pairs (_)
A8,A9: 8.. / A8 = 8  =>  0 pairs (_) / A9 = 8  =>  0 pairs (_)
H8,I9: 8.. / H8 = 8  =>  0 pairs (_) / I9 = 8  =>  0 pairs (_)
E4,I4: 8.. / E4 = 8  =>  0 pairs (_) / I4 = 8  =>  0 pairs (_)
E6,H6: 8.. / E6 = 8  =>  0 pairs (_) / H6 = 8  =>  0 pairs (_)
A8,H8: 8.. / A8 = 8  =>  0 pairs (_) / H8 = 8  =>  0 pairs (_)
A9,I9: 8.. / A9 = 8  =>  0 pairs (_) / I9 = 8  =>  0 pairs (_)
H6,H8: 8.. / H6 = 8  =>  0 pairs (_) / H8 = 8  =>  0 pairs (_)
I4,I9: 8.. / I4 = 8  =>  0 pairs (_) / I9 = 8  =>  0 pairs (_)
* DURATION: 0:00:09.739340  START: 12:45:11.892088  END: 12:45:21.631428 2020-12-12
* CP COUNT: (16)
* INCONCLUSIVE

--------------------------------------------------
* DEEP CONSTRAINT PAIRS (PAIR REDUCTION)
F5,D6: 3.. / F5 = 3 ==>  4 pairs (_) / D6 = 3 ==>  2 pairs (_)
F7,F8: 5.. / F7 = 5 ==>  2 pairs (_) / F8 = 5 ==>  2 pairs (_)
B5,B6: 6.. / B5 = 6 ==>  4 pairs (_) / B6 = 6 ==>  1 pairs (_)
H3,I3: 7.. / H3 = 7 ==>  1 pairs (_) / I3 = 7 ==>  1 pairs (_)
E7,D8: 2.. / E7 = 2 ==>  0 pairs (*) / D8 = 2  =>  0 pairs (X)
* DURATION: 0:00:58.919410  START: 12:45:21.631990  END: 12:46:20.551400 2020-12-12
* REASONING F5,D6: 3..
* DIS # F5: 3 # E1: 4,6 => CTR => E1: 1,2
* DIS # F5: 3 + E1: 1,2 # D3: 4,6 => CTR => D3: 1,2,3,9
* DIS # F5: 3 + E1: 1,2 + D3: 1,2,3,9 # D2: 4,9 => CTR => D2: 1,2,3
* CNT   3 HDP CHAINS /  42 HYP OPENED
* REASONING B5,B6: 6..
* DIS # B5: 6 # H6: 4,9 => CTR => H6: 5,6,8
* DIS # B5: 6 + H6: 5,6,8 # I4: 2,9 => CTR => I4: 5,6,8
* CNT   2 HDP CHAINS /  24 HYP OPENED
* REASONING E7,D8: 2..
* PRF # E7: 2 # D4: 6,9 => SOL
* STA # E7: 2 + D4: 6,9
* CNT   1 HDP CHAINS /   6 HYP OPENED
* DCP COUNT: (5)
* SOLUTION FOUND

Header Info

33284;2012_04;GP;21;11.30;1.20;1.20

Appendix: Full HDP Chains

A1. Deep Constraint Pair Analysis

Full list of HDP chains traversed for F5,D6: 3..:

* DIS # F5: 3 # E1: 4,6 => CTR => E1: 1,2
* DIS # F5: 3 + E1: 1,2 # D3: 4,6 => CTR => D3: 1,2,3,9
* DIS # F5: 3 + E1: 1,2 + D3: 1,2,3,9 # D2: 4,9 => CTR => D2: 1,2,3
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # E2: 4,9 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # E2: 4,9 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # E2: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # A4: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # C4: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # B5: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # A3: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # A7: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # A8: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # D2: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # E2: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # D3: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # C1: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # G1: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # E2: 4,9 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # E2: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # A4: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # C4: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # B5: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # A3: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # A7: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # A8: 1,2 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # E4: 7,9 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # E6: 7,9 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # F8: 7,9 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 # F8: 5 => UNS
* INC # F5: 3 + E1: 1,2 + D3: 1,2,3,9 + D2: 1,2,3 => UNS
* INC # D6: 3 # A4: 5,7 => UNS
* INC # D6: 3 # B6: 5,7 => UNS
* INC # D6: 3 # A7: 5,7 => UNS
* INC # D6: 3 # A8: 5,7 => UNS
* INC # D6: 3 # A9: 5,7 => UNS
* INC # D6: 3 # C4: 5,9 => UNS
* INC # D6: 3 # B6: 5,9 => UNS
* INC # D6: 3 # H6: 5,9 => UNS
* INC # D6: 3 # H6: 4,6,8 => UNS
* INC # D6: 3 # C8: 5,9 => UNS
* INC # D6: 3 # C9: 5,9 => UNS
* INC # D6: 3 => UNS
* CNT  42 HDP CHAINS /  42 HYP OPENED

Full list of HDP chains traversed for F7,F8: 5..:

* INC # F7: 5 # H8: 1,7 => UNS
* INC # F7: 5 # H8: 5,6,8 => UNS
* INC # F7: 5 # A7: 1,7 => UNS
* INC # F7: 5 # B7: 1,7 => UNS
* INC # F7: 5 # H3: 1,7 => UNS
* INC # F7: 5 # H3: 4,6,9 => UNS
* INC # F7: 5 # I9: 3,7 => UNS
* INC # F7: 5 # I9: 5,6,8 => UNS
* INC # F7: 5 # A7: 3,7 => UNS
* INC # F7: 5 # B7: 3,7 => UNS
* INC # F7: 5 # I3: 3,7 => UNS
* INC # F7: 5 # I3: 2,6,9 => UNS
* INC # F7: 5 => UNS
* INC # F8: 5 # E7: 4,7 => UNS
* INC # F8: 5 # E9: 4,7 => UNS
* INC # F8: 5 # A7: 4,7 => UNS
* INC # F8: 5 # A7: 1,2,3,5 => UNS
* INC # F8: 5 # H8: 1,6 => UNS
* INC # F8: 5 # H8: 7,8 => UNS
* INC # F8: 5 # G1: 1,6 => UNS
* INC # F8: 5 # G3: 1,6 => UNS
* INC # F8: 5 => UNS
* CNT  22 HDP CHAINS /  22 HYP OPENED

Full list of HDP chains traversed for B5,B6: 6..:

* DIS # B5: 6 # H6: 4,9 => CTR => H6: 5,6,8
* INC # B5: 6 + H6: 5,6,8 # E5: 4,9 => UNS
* INC # B5: 6 + H6: 5,6,8 # F5: 4,9 => UNS
* INC # B5: 6 + H6: 5,6,8 # H2: 4,9 => UNS
* INC # B5: 6 + H6: 5,6,8 # H3: 4,9 => UNS
* DIS # B5: 6 + H6: 5,6,8 # I4: 2,9 => CTR => I4: 5,6,8
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # I2: 2,9 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # I3: 2,9 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # E1: 1,4 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # E2: 1,4 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # D6: 3,4 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # D6: 6,9 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # F1: 3,4 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # F2: 3,4 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # H2: 4,9 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # H3: 4,9 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # I2: 2,9 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 # I3: 2,9 => UNS
* INC # B5: 6 + H6: 5,6,8 + I4: 5,6,8 => UNS
* INC # B6: 6 # H6: 4,5 => UNS
* INC # B6: 6 # H6: 8,9 => UNS
* INC # B6: 6 # G1: 4,5 => UNS
* INC # B6: 6 # G1: 1,2,3,6 => UNS
* INC # B6: 6 => UNS
* CNT  24 HDP CHAINS /  24 HYP OPENED

Full list of HDP chains traversed for H3,I3: 7..:

* INC # H3: 7 # G8: 1,5 => UNS
* INC # H3: 7 # H8: 1,5 => UNS
* INC # H3: 7 # A7: 1,5 => UNS
* INC # H3: 7 # B7: 1,5 => UNS
* INC # H3: 7 # H1: 1,5 => UNS
* INC # H3: 7 # H2: 1,5 => UNS
* INC # H3: 7 => UNS
* INC # I3: 7 # G9: 3,5 => UNS
* INC # I3: 7 # I9: 3,5 => UNS
* INC # I3: 7 # A7: 3,5 => UNS
* INC # I3: 7 # B7: 3,5 => UNS
* INC # I3: 7 # I1: 3,5 => UNS
* INC # I3: 7 # I2: 3,5 => UNS
* INC # I3: 7 => UNS
* CNT  14 HDP CHAINS /  14 HYP OPENED

Full list of HDP chains traversed for E7,D8: 2..:

* INC # E7: 2 # F8: 6,9 => UNS
* INC # E7: 2 # D9: 6,9 => UNS
* INC # E7: 2 # E9: 6,9 => UNS
* INC # E7: 2 # D3: 6,9 => UNS
* PRF # E7: 2 # D4: 6,9 => SOL
* STA # E7: 2 + D4: 6,9
* CNT   5 HDP CHAINS /   6 HYP OPENED