Analysis of xx-top500-268-base.sdk

Contents

Original Sudoku

level: medium

Original Sudoku

position: ....924..7.1................5....2.....81.......7.....54.3...........6.93......2. initial

Autosolve

position: ....924..7.143895.....71....5.94.2..2..81.......72....542369......2546393..187524 autosolve
Autosolve

Pair Reduction Variants

Pair Reduction Analysis

Pair Reduction Analysis

The following important HDP chains were detected:

* DIS # C1: 6,8 => CTR => C1: 3,5
* PRF # A4: 6,8 => SOL
* DIS # A4: 1 => CTR => A4: 6,8
* PRF # C1: 3,8 => SOL
* DIS # C1: 5,6 => CTR => C1: 3,8
* DIS # B6: 3,8 => CTR => B6: 1
* PRF # B6: 1 => SOL
* DIS # B3: 2,6 => CTR => B3: 9
* PRF # B3: 9 => SOL
* DIS # C3: 4,9 => CTR => C3: 5,6
* PRF # C3: 5,6 => SOL
* DIS # C1: 5,6 => CTR => C1: 3,8
* PRF # C1: 3,8 => SOL
* PRF # C3: 5,6 => SOL
* DIS # C3: 4,9 => CTR => C3: 5,6
* DIS # H4: 1,7 => CTR => H4: 6,8
* PRF # I3: 2,6 => SOL
* DIS # I3: 3,8 => CTR => I3: 2,6
* DIS # I3: 3,8 => CTR => I3: 2,6
* PRF # I3: 2,6 => SOL
* PRF # G6: 3,8 => SOL
* DIS # G6: 1 => CTR => G6: 3,8
* DIS # I3: 6,8 => CTR => I3: 2,3
* DIS # H4: 1,7 => CTR => H4: 6,8
* DIS # C4: 6,8 => CTR => C4: 3,7
* DIS # C3: 4,9 => CTR => C3: 5,6
* PRF # C3: 5,6 => SOL
* DIS # F6: 3,6 => CTR => F6: 5
* DIS # C4: 3,6 => CTR => C4: 7,8
* DIS # I4: 3,6 => CTR => I4: 1,7,8
* DIS # F6: 3 => CTR => F6: 5,6
* DIS # I6: 5,6 => CTR => I6: 1,3,8
* PRF # I6: 1,3,8 => SOL
* DIS # B8: 1,8 => CTR => B8: 7
* PRF # B8: 7 => SOL
* PRF # A4: 1,8 => SOL
* DIS # A4: 6 => CTR => A4: 1,8
* PRF # B8: 7,8 => SOL
* DIS # B8: 1 => CTR => B8: 7,8
* DIS # C4: 3,6 => CTR => C4: 7,8
* PRF # B3: 6,9 => SOL
* DIS # B3: 2 => CTR => B3: 6,9
* DIS # C3: 6,9 => CTR => C3: 4,5
* CNT  43 HDP CHAINS /  59 HYP OPENED

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

Pair Reduction

Pair Reduction

The following important HDP chains were detected:

* DIS # C1: 6,8 => CTR => C1: 3,5
* PRF C1: 3,5 # A4: 6,8 => SOL
* STA C1: 3,5 + A4: 6,8
* CNT   2 HDP CHAINS /   2 HYP OPENED

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

Details

Positions

....924..7.1................5....2.....81.......7.....54.3...........6.93......2. initial
....924..7.143895.....71....5.94.2..2..81.......72....542369......2546393..187524 autosolve
683592417721438956495671382857943261234816795916725843542369178178254639369187524 solved

Classification

level: medium

Pairing Analysis

--------------------------------------------------
* PAIRS (24)
A1: 6,8
B1: 3,8
B2: 2,6
A3: 4,9
D1: 5,6
D3: 5,6
H1: 1,7
I1: 1,7
I2: 2,6
G3: 3,8
H3: 6,8
B5: 3,7
C5: 4,9
A6: 4,9
F4: 3,6
F5: 5,6
G5: 3,7
H5: 4,9
I5: 5,6
H6: 4,9
A8: 1,8
C8: 7,8
B9: 6,9
C9: 6,9

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
H1,I1: 1.. / H1 = 1  => 24 pairs (_) / I1 = 1  => 24 pairs (_)
A4,B6: 1.. / A4 = 1  =>  0 pairs (X) / B6 = 1  =>  0 pairs (_)
A8,B8: 1.. / A8 = 1  =>  0 pairs (*) / B8 = 1  =>  0 pairs (X)
A4,A8: 1.. / A4 = 1  =>  0 pairs (X) / A8 = 1  =>  0 pairs (_)
B6,B8: 1.. / B6 = 1  =>  0 pairs (*) / B8 = 1  =>  0 pairs (X)
G6,G7: 1.. / G6 = 1  =>  0 pairs (X) / G7 = 1  =>  0 pairs (_)
B2,B3: 2.. / B2 = 2  =>  0 pairs (*) / B3 = 2  =>  0 pairs (X)
I2,I3: 2.. / I2 = 2  =>  0 pairs (X) / I3 = 2  =>  0 pairs (_)
B2,I2: 2.. / B2 = 2  =>  0 pairs (*) / I2 = 2  =>  0 pairs (X)
B3,I3: 2.. / B3 = 2  =>  0 pairs (X) / I3 = 2  =>  0 pairs (_)
B1,C1: 3.. / B1 = 3  =>  0 pairs (X) / C1 = 3  =>  0 pairs (_)
G3,I3: 3.. / G3 = 3  =>  0 pairs (*) / I3 = 3  =>  0 pairs (X)
F4,F6: 3.. / F4 = 3  => 24 pairs (_) / F6 = 3  =>  0 pairs (X)
B5,G5: 3.. / B5 = 3  =>  0 pairs (*) / G5 = 3  =>  0 pairs (X)
A3,C3: 4.. / A3 = 4  => 19 pairs (_) / C3 = 4  =>  0 pairs (X)
C5,A6: 4.. / C5 = 4  => 19 pairs (_) / A6 = 4  =>  0 pairs (X)
H5,H6: 4.. / H5 = 4  =>  0 pairs (X) / H6 = 4  => 19 pairs (_)
C5,H5: 4.. / C5 = 4  => 19 pairs (_) / H5 = 4  =>  0 pairs (X)
A6,H6: 4.. / A6 = 4  =>  0 pairs (X) / H6 = 4  => 19 pairs (_)
A3,A6: 4.. / A3 = 4  => 19 pairs (_) / A6 = 4  =>  0 pairs (X)
C3,C5: 4.. / C3 = 4  =>  0 pairs (X) / C5 = 4  => 19 pairs (_)
C1,C3: 5.. / C1 = 5  =>  0 pairs (X) / C3 = 5  =>  0 pairs (_)
D1,D3: 5.. / D1 = 5  =>  0 pairs (*) / D3 = 5  =>  0 pairs (X)
F5,F6: 5.. / F5 = 5  =>  0 pairs (X) / F6 = 5  => 21 pairs (_)
I5,I6: 5.. / I5 = 5  => 21 pairs (_) / I6 = 5  =>  0 pairs (X)
C1,D1: 5.. / C1 = 5  =>  0 pairs (X) / D1 = 5  =>  0 pairs (_)
C3,D3: 5.. / C3 = 5  =>  0 pairs (*) / D3 = 5  =>  0 pairs (X)
F5,I5: 5.. / F5 = 5  =>  0 pairs (X) / I5 = 5  => 21 pairs (_)
F6,I6: 5.. / F6 = 5  => 21 pairs (_) / I6 = 5  =>  0 pairs (X)
D1,D3: 6.. / D1 = 6  =>  0 pairs (X) / D3 = 6  =>  0 pairs (_)
B9,C9: 6.. / B9 = 6  =>  0 pairs (*) / C9 = 6  =>  0 pairs (X)
B2,I2: 6.. / B2 = 6  =>  0 pairs (X) / I2 = 6  =>  0 pairs (_)
F5,I5: 6.. / F5 = 6  => 21 pairs (_) / I5 = 6  =>  0 pairs (X)
A1,A4: 6.. / A1 = 6  =>  0 pairs (*) / A4 = 6  =>  0 pairs (X)
H3,H4: 6.. / H3 = 6  =>  0 pairs (X) / H4 = 6  =>  0 pairs (_)
H1,I1: 7.. / H1 = 7  => 24 pairs (_) / I1 = 7  => 24 pairs (_)
C4,B5: 7.. / C4 = 7  =>  0 pairs (*) / B5 = 7  =>  0 pairs (X)
B8,C8: 7.. / B8 = 7  =>  0 pairs (*) / C8 = 7  =>  0 pairs (X)
B5,G5: 7.. / B5 = 7  =>  0 pairs (X) / G5 = 7  =>  0 pairs (_)
B5,B8: 7.. / B5 = 7  =>  0 pairs (X) / B8 = 7  =>  0 pairs (_)
C4,C8: 7.. / C4 = 7  =>  0 pairs (*) / C8 = 7  =>  0 pairs (X)
G5,G7: 7.. / G5 = 7  =>  0 pairs (*) / G7 = 7  =>  0 pairs (X)
C5,A6: 9.. / C5 = 9  =>  0 pairs (X) / A6 = 9  => 19 pairs (_)
H5,H6: 9.. / H5 = 9  => 19 pairs (_) / H6 = 9  =>  0 pairs (X)
B9,C9: 9.. / B9 = 9  =>  0 pairs (X) / C9 = 9  =>  0 pairs (_)
C5,H5: 9.. / C5 = 9  =>  0 pairs (X) / H5 = 9  => 19 pairs (_)
A6,H6: 9.. / A6 = 9  => 19 pairs (_) / H6 = 9  =>  0 pairs (X)
A3,A6: 9.. / A3 = 9  =>  0 pairs (X) / A6 = 9  => 19 pairs (_)
B3,B9: 9.. / B3 = 9  =>  0 pairs (*) / B9 = 9  =>  0 pairs (X)
* DURATION: 0:01:48.652003  START: 12:02:20.819927  END: 12:04:09.471930 2017-05-04
* CP COUNT: (49)
* SOLUTION FOUND

--------------------------------------------------
* PREPARE PR GRAPH
* PAIR REDUCTION ..
* LEVEL 0 PASS 1 ROUND 1 (AUTO SOLVE) (A1,A3,A6,A8,B1,B2,B5,B9,C5,C8,C9,D1,D3,F4,F5,G3,G5,H1,H3,H5,H6,I1,I2,I5)
* ....924..7.143895.....71....5.94.2..2..81.......72....542369......2546393..187524
* PAIR A1: 6,8 BLK 1
C1: 6,8,3,5                              # reduction candidate for 6,8
C1: 6,8 => CTR
* .3.5924..7.143895...5671.8..5.94.26.2748163.....72....542369......2546393..187524
C1: 3,5                                  # 25 pairs
* PAIR A1: 6,8 COL A
A4: 6,8,1                                # reduction candidate for 6,8
A4: 6,8 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
A4: 1 => CTR
* 6..5924..72143895649567138215.9432672.4816.959.6725.4.542369...817254639369187524
* PAIR B1: 3,8 BLK 1
C1: 3,8,5,6                              # reduction candidate for 3,8
C1: 3,8 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
C1: 5,6 => CTR
* 83..924..7.143895.....7186365.9432..27.81.3...1.72....5423697....72546393..187524
* PAIR B1: 3,8 COL B
B6: 3,8,1                                # reduction candidate for 3,8
B6: 3,8 => CTR
* 6..5924..721438956.95671.8215.94.2672748163.....72....542369...8172546393..187524
B6: 1 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
* PAIR B2: 2,6 BLK 1
B3: 2,6,9                                # reduction candidate for 2,6
B3: 2,6 => CTR
* 8356924..7.143895....571.6.65.9432..27.81.....1.72....5423691..1..254639396187524
B3: 9 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
* PAIR A3: 4,9 BLK 1
C3: 4,9,5,6                              # reduction candidate for 4,9
C3: 4,9 => CTR
* ..56924..7.143895....571...65.9432..2..81.....1372.8..5423691..1..2546393.6187524
C3: 5,6 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
* PAIR D1: 5,6 ROW 1
C1: 5,6,3,8                              # reduction candidate for 5,6
C1: 5,6 => CTR
* 83..924..7.143895.....7186365.9432..27.81.3...1.72....5423697....72546393..187524
C1: 3,8 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
* PAIR D3: 5,6 ROW 3
C3: 5,6,4,9                              # reduction candidate for 5,6
C3: 5,6 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
C3: 4,9 => CTR
* ..56924..7.143895....571...65.9432..2..81.....1372.8..5423691..1..2546393.6187524
* PAIR H1: 1,7 COL H
H4: 1,7,6,8                              # reduction candidate for 1,7
H4: 1,7 => CTR
* 835692471761438952.2.571.6.6579432..2..81.....1.72....5423691871..254639396187524
H4: 6,8                                  # 26 pairs
H7: 1,7,8                                # reduction candidate for 1,7
H7: 1,7                                  # 26 pairs
* PAIR I1: 1,7 COL I
I4: 1,7,3,6,8                            # reduction candidate for 1,7
I4: 1,7                                  # 28 pairs
I7: 1,7,8                                # reduction candidate for 1,7
I7: 1,7                                  # 25 pairs
* PAIR I2: 2,6 BLK 3
I3: 2,6,3,8                              # reduction candidate for 2,6
I3: 2,6 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
I3: 3,8 => CTR
* 8356924..761438952.2.571.6.65.9432..27.81.....1.72....5423691..1..254639396187524
* PAIR G3: 3,8 BLK 3
I3: 3,8,2,6                              # reduction candidate for 3,8
I3: 3,8 => CTR
* 8356924..761438952.2.571.6.65.9432..27.81.....1.72....5423691..1..254639396187524
I3: 2,6 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
* PAIR G3: 3,8 COL G
G6: 3,8,1                                # reduction candidate for 3,8
G6: 3,8 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
G6: 1 => CTR
* 6..5924..721438956....71...15.94.2..27.81.3.....72.1..5423697..8172546393..187524
* PAIR H3: 6,8 BLK 3
I3: 6,8,2,3                              # reduction candidate for 6,8
I3: 6,8 => CTR
* ....924..7.1438952.2..713...5.94.2..23.81.7.....72....542369....78254639396187524
I3: 2,3                                  # 25 pairs
* PAIR H3: 6,8 COL H
H4: 6,8,1,7                              # reduction candidate for 6,8
H4: 1,7 => CTR
* 835692471761438952.2.571.6.6579432..2..81.....1.72....5423691871..254639396187524
H4: 6,8                                  # 26 pairs
* PAIR B5: 3,7 BLK 4
C4: 3,7,6,8                              # reduction candidate for 3,7
C4: 6,8 => CTR
* ...6924..761438952.2.571863.5.9432..27.81.3.....72.1..5423697...172546393..187524
C4: 3,7                                  # 27 pairs
* PAIR C5: 4,9 COL C
C3: 4,9,5,6                              # reduction candidate for 4,9
C3: 4,9 => CTR
* ..56924..7.143895....571...65.9432..2..81.....1372.8..5423691..1..2546393.6187524
C3: 5,6 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
* PAIR F4: 3,6 BLK 5
F6: 3,6,5                                # reduction candidate for 3,6
F6: 3,6 => CTR
* 8356924..761438952.2.571.6365.9432..27.815..6.1.726..55423691..1..254639396187524
F6: 5                                    # 21 pairs
* PAIR F4: 3,6 ROW 4
C4: 3,6,7,8                              # reduction candidate for 3,6
C4: 3,6 => CTR
* ...6924..761438952.2.571863.5.94.2..27.81.3.....72.1..5423697...172546393..187524
C4: 7,8                                  # 26 pairs
I4: 3,6,1,7,8                            # reduction candidate for 3,6
I4: 3,6 => CTR
* 6835924..721438956.95671.82.5.9462.3234815......72....542369......2546393..187524
I4: 1,7,8                                # 24 pairs
* PAIR F5: 5,6 BLK 5
F6: 5,6,3                                # reduction candidate for 5,6
F6: 3 => CTR
* ....924..7.143895.....71....5.94.2..2..815..6..6723..5542369......254639369187524
F6: 5,6                                  # 24 pairs
* PAIR G5: 3,7 BLK 6
I4: 3,7,1,6,8                            # reduction candidate for 3,7
I4: 3,7                                  # 26 pairs
I4: 1,6,8                                # 24 pairs
* PAIR I5: 5,6 BLK 6
I6: 5,6,1,3,8                            # reduction candidate for 5,6
I6: 5,6 => CTR
* 8356924..761438952.2.571.6365.9432..27.81.....1.72....5423691..1..254639396187524
I6: 1,3,8 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
* PAIR A8: 1,8 BLK 7
B8: 1,8,7                                # reduction candidate for 1,8
B8: 1,8 => CTR
* ...6924..761438952.2.571863.5.94.2..27.81.3.....72.1..5423697...172546393..187524
B8: 7 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
* PAIR A8: 1,8 COL A
A4: 1,8,6                                # reduction candidate for 1,8
A4: 1,8 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
A4: 6 => CTR
* 83..924..7.143895.....71.6.65.9432..27.81.....1.72....5423691..1..2546393..187524
* PAIR C8: 7,8 BLK 7
B8: 7,8,1                                # reduction candidate for 7,8
B8: 7,8 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
B8: 1 => CTR
* 6..5924..7.143895.....7186315.94.2..27.81.3.....72.1..5423697..8172546393..187524
* PAIR C8: 7,8 COL C
C4: 7,8,3,6                              # reduction candidate for 7,8
C4: 3,6 => CTR
* ...6924..761438952.2.571863.5.94.2..27.81.3.....72.1..5423697...172546393..187524
C4: 7,8                                  # 26 pairs
* PAIR B9: 6,9 COL B
B3: 6,9,2                                # reduction candidate for 6,9
B3: 6,9 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
B3: 2 => CTR
* 8356924..761438952.2.571.6.65.9432..27.81.....1.72....5423691..1..254639396187524
* PAIR C9: 6,9 COL C
C3: 6,9,4,5                              # reduction candidate for 6,9
C3: 6,9 => CTR
* ..56924..7.143895.4..571...65.9432..2.481..9.91372.84.5423691..1..2546393..187524
C3: 4,5                                  # 25 pairs
* INCONCLUSIVE
* SAVE PR GRAPH xx-top500-268-base-pr-000.dot
* REASONING
* DIS # C1: 6,8 => CTR => C1: 3,5
* PRF # A4: 6,8 => SOL
* DIS # A4: 1 => CTR => A4: 6,8
* PRF # C1: 3,8 => SOL
* DIS # C1: 5,6 => CTR => C1: 3,8
* DIS # B6: 3,8 => CTR => B6: 1
* PRF # B6: 1 => SOL
* DIS # B3: 2,6 => CTR => B3: 9
* PRF # B3: 9 => SOL
* DIS # C3: 4,9 => CTR => C3: 5,6
* PRF # C3: 5,6 => SOL
* DIS # C1: 5,6 => CTR => C1: 3,8
* PRF # C1: 3,8 => SOL
* PRF # C3: 5,6 => SOL
* DIS # C3: 4,9 => CTR => C3: 5,6
* DIS # H4: 1,7 => CTR => H4: 6,8
* PRF # I3: 2,6 => SOL
* DIS # I3: 3,8 => CTR => I3: 2,6
* DIS # I3: 3,8 => CTR => I3: 2,6
* PRF # I3: 2,6 => SOL
* PRF # G6: 3,8 => SOL
* DIS # G6: 1 => CTR => G6: 3,8
* DIS # I3: 6,8 => CTR => I3: 2,3
* DIS # H4: 1,7 => CTR => H4: 6,8
* DIS # C4: 6,8 => CTR => C4: 3,7
* DIS # C3: 4,9 => CTR => C3: 5,6
* PRF # C3: 5,6 => SOL
* DIS # F6: 3,6 => CTR => F6: 5
* DIS # C4: 3,6 => CTR => C4: 7,8
* DIS # I4: 3,6 => CTR => I4: 1,7,8
* DIS # F6: 3 => CTR => F6: 5,6
* DIS # I6: 5,6 => CTR => I6: 1,3,8
* PRF # I6: 1,3,8 => SOL
* DIS # B8: 1,8 => CTR => B8: 7
* PRF # B8: 7 => SOL
* PRF # A4: 1,8 => SOL
* DIS # A4: 6 => CTR => A4: 1,8
* PRF # B8: 7,8 => SOL
* DIS # B8: 1 => CTR => B8: 7,8
* DIS # C4: 3,6 => CTR => C4: 7,8
* PRF # B3: 6,9 => SOL
* DIS # B3: 2 => CTR => B3: 6,9
* DIS # C3: 6,9 => CTR => C3: 4,5
* CNT  43 HDP CHAINS /  59 HYP OPENED

--------------------------------------------------
* PREPARE PR GRAPH
* PAIR REDUCTION ..
* LEVEL 0 PASS 1 ROUND 1 (AUTO SOLVE) (A1,A3,A6,A8,B1,B2,B5,B9,C5,C8,C9,D1,D3,F4,F5,G3,G5,H1,H3,H5,H6,I1,I2,I5)
* ....924..7.143895.....71....5.94.2..2..81.......72....542369......2546393..187524
* PAIR A1: 6,8 BLK 1
C1: 6,8,3,5                              # reduction candidate for 6,8
C1: 6,8 => CTR
* .3.5924..7.143895...5671.8..5.94.26.2748163.....72....542369......2546393..187524
* PAIR A1: 6,8 COL A
A4: 6,8,1                                # reduction candidate for 6,8
A4: 6,8 => SOLVED
* 683592417721438956495671382857943261234816795916725843542369178178254639369187524
* DURATION: 0:00:04.850349  START: 12:05:26.923688  END: 12:05:31.774037 2017-05-04
* SOLUTION FOUND
* SAVE PR GRAPH xx-top500-268-base-pr-001.dot
* REASONING
* DIS # C1: 6,8 => CTR => C1: 3,5
* PRF C1: 3,5 # A4: 6,8 => SOL
* STA C1: 3,5 + A4: 6,8
* CNT   2 HDP CHAINS /   2 HYP OPENED

Header Info

Top 500 Minimum 17 268

solution: 683592417721438956495671382857943261234816795916725843542369178178254639369187524
info: 2142     FNBTHWY  S8.f     6692

http://www.sfsudoku.com/su17ExtremeDiff500.txt from http://www.minimumsudoku.com/

Solution

position: 683592417721438956495671382857943261234816795916725843542369178178254639369187524 solved
Solution

See section Pair Reduction for the HDP chains leading to this result.

Appendix: Full HDP Chains

A1. Pair Reduction Analysis

Full list of HDP chains traversed:

* DIS # C1: 6,8 => CTR => C1: 3,5
* INC # C1: 3,5 => UNS
* PRF # A4: 6,8 => SOL
* DIS # A4: 1 => CTR => A4: 6,8
* PRF # C1: 3,8 => SOL
* DIS # C1: 5,6 => CTR => C1: 3,8
* DIS # B6: 3,8 => CTR => B6: 1
* PRF # B6: 1 => SOL
* DIS # B3: 2,6 => CTR => B3: 9
* PRF # B3: 9 => SOL
* DIS # C3: 4,9 => CTR => C3: 5,6
* PRF # C3: 5,6 => SOL
* DIS # C1: 5,6 => CTR => C1: 3,8
* PRF # C1: 3,8 => SOL
* PRF # C3: 5,6 => SOL
* DIS # C3: 4,9 => CTR => C3: 5,6
* DIS # H4: 1,7 => CTR => H4: 6,8
* INC # H4: 6,8 => UNS
* INC # H7: 1,7 => UNS
* INC # I4: 1,7 => UNS
* INC # I7: 1,7 => UNS
* PRF # I3: 2,6 => SOL
* DIS # I3: 3,8 => CTR => I3: 2,6
* DIS # I3: 3,8 => CTR => I3: 2,6
* PRF # I3: 2,6 => SOL
* PRF # G6: 3,8 => SOL
* DIS # G6: 1 => CTR => G6: 3,8
* DIS # I3: 6,8 => CTR => I3: 2,3
* INC # I3: 2,3 => UNS
* INC # H4: 6,8 => UNS
* DIS # H4: 1,7 => CTR => H4: 6,8
* INC # C4: 3,7 => UNS
* DIS # C4: 6,8 => CTR => C4: 3,7
* DIS # C3: 4,9 => CTR => C3: 5,6
* PRF # C3: 5,6 => SOL
* DIS # F6: 3,6 => CTR => F6: 5
* INC # F6: 5 => UNS
* DIS # C4: 3,6 => CTR => C4: 7,8
* INC # C4: 7,8 => UNS
* DIS # I4: 3,6 => CTR => I4: 1,7,8
* INC # I4: 1,7,8 => UNS
* INC # F6: 5,6 => UNS
* DIS # F6: 3 => CTR => F6: 5,6
* INC # I4: 3,7 => UNS
* INC # I4: 1,6,8 => UNS
* DIS # I6: 5,6 => CTR => I6: 1,3,8
* PRF # I6: 1,3,8 => SOL
* DIS # B8: 1,8 => CTR => B8: 7
* PRF # B8: 7 => SOL
* PRF # A4: 1,8 => SOL
* DIS # A4: 6 => CTR => A4: 1,8
* PRF # B8: 7,8 => SOL
* DIS # B8: 1 => CTR => B8: 7,8
* INC # C4: 7,8 => UNS
* DIS # C4: 3,6 => CTR => C4: 7,8
* PRF # B3: 6,9 => SOL
* DIS # B3: 2 => CTR => B3: 6,9
* DIS # C3: 6,9 => CTR => C3: 4,5
* INC # C3: 4,5 => UNS
* CNT  59 HDP CHAINS /  59 HYP OPENED

A2. Pair Reduction

Full list of HDP chains traversed:

* DIS # C1: 6,8 => CTR => C1: 3,5
* PRF C1: 3,5 # A4: 6,8 => SOL
* STA C1: 3,5 + A4: 6,8
* CNT   2 HDP CHAINS /   2 HYP OPENED