Analysis of xx-top500-276-base.sdk

Contents

Original Sudoku

level: medium

Original Sudoku

position: .3.7...4.1...9..............2.68.........21........5.98.1.........4...3.5........ initial

Autosolve

position: 23.7...4.1...94...4........925681.7.3749521..6183475298.1......7.24...3.5.3...... autosolve
Autosolve

Pair Reduction Variants

Pair Reduction Analysis

Pair Reduction Analysis

The following important HDP chains were detected:

* DIS # C3: 7 => CTR => C3: 6,9
* DIS # G1: 6,9 => CTR => G1: 8
* PRF # G1: 8 => SOL
* DIS # H2: 5,8 => CTR => H2: 6
* DIS # I2: 5,8 => CTR => I2: 2,3,6,7
* DIS # C3: 9 => CTR => C3: 6,7
* DIS # G2: 6,7 => CTR => G2: 2,3,8
* DIS # I2: 6,7 => CTR => I2: 2,3,5,8
* DIS # D3: 5,8 => CTR => D3: 1,2
* DIS # F3: 5,8 => CTR => F3: 3,6
* PRF # H3: 5,8 => SOL
* DIS # I3: 5,8 => CTR => I3: 1,2,6,7
* PRF # I1: 1,6 => SOL
* DIS # I1: 5,8 => CTR => I1: 1,6
* DIS # E7: 7 => CTR => E7: 2,3
* DIS # H3: 6,8 => CTR => H3: 1,5,9
* DIS # H9: 6,8 => CTR => H9: 1,9
* DIS # I1: 6,8 => CTR => I1: 1,5
* DIS # I2: 6,8 => CTR => I2: 2,3,5,7
* DIS # I8: 6,8 => CTR => I8: 1,5
* DIS # F8: 6,9 => CTR => F8: 5,8
* PRF # G8: 6,9 => SOL
* DIS # G8: 8 => CTR => G8: 6,9
* PRF # I7: 2,5 => SOL
* DIS # D3: 2,5 => CTR => D3: 1,8
* DIS # I8: 1,6 => CTR => I8: 5,8
* PRF # I8: 5,8 => SOL
* DIS # E7: 2,7 => CTR => E7: 3
* PRF # E7: 3 => SOL
* CNT  29 HDP CHAINS /  57 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 # C3: 7 => CTR => C3: 6,9
* DIS C3: 6,9 # H2: 5,8 => CTR => H2: 6
* DIS C3: 6,9 + H2: 6 # I2: 5,8 => CTR => I2: 2,3
* DIS C3: 6,9 + H2: 6 + I2: 2,3 # D2: 2 => CTR => D2: 5,8
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 # D3: 5,8 => CTR => D3: 1,2
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 # F3: 5,8 => CTR => F3: 3,6
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 # I3: 5,8 => CTR => I3: 1,7
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 # E7: 7 => CTR => E7: 2,3
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 # F8: 6,9 => CTR => F8: 5,8
* PRF C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 + F8: 5,8 # G8: 6,9 => SOL
* STA C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 + F8: 5,8 + G8: 6,9
* CNT  10 HDP CHAINS /  16 HYP OPENED

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

Details

Positions

.3.7...4.1...9..............2.68.........21........5.98.1.........4...3.5........ initial
23.7...4.1...94...4........925681.7.3749521..6183475298.1......7.24...3.5.3...... autosolve
239765841157894263486123957925681374374952186618347529841536792792418635563279418 solved

Classification

level: medium

Pairing Analysis

--------------------------------------------------
* PAIRS (14)
C1: 6,9
B2: 5,8
C2: 6,7
B3: 5,8
E1: 1,6
E3: 2,3
G4: 3,4
I4: 3,4
H5: 6,8
I5: 6,8
B8: 6,9
D7: 2,5
E8: 1,6
E9: 2,7

--------------------------------------------------
* CONSTRAINT PAIRS (AUTO SOLVE)
E1,D3: 1.. / E1 = 1  =>  0 pairs (X) / D3 = 1  =>  0 pairs (_)
E8,D9: 1.. / E8 = 1  =>  0 pairs (*) / D9 = 1  =>  0 pairs (X)
E1,I1: 1.. / E1 = 1  =>  0 pairs (X) / I1 = 1  =>  0 pairs (_)
E8,I8: 1.. / E8 = 1  =>  0 pairs (*) / I8 = 1  =>  0 pairs (X)
D3,D9: 1.. / D3 = 1  =>  0 pairs (*) / D9 = 1  =>  0 pairs (X)
E1,E8: 1.. / E1 = 1  =>  0 pairs (X) / E8 = 1  =>  0 pairs (_)
H3,H9: 1.. / H3 = 1  =>  0 pairs (X) / H9 = 1  =>  0 pairs (_)
E3,F3: 3.. / E3 = 3  =>  0 pairs (X) / F3 = 3  =>  0 pairs (_)
G2,I2: 3.. / G2 = 3  => 12 pairs (_) / I2 = 3  => 12 pairs (_)
G4,I4: 3.. / G4 = 3  => 12 pairs (_) / I4 = 3  => 12 pairs (_)
E7,F7: 3.. / E7 = 3  =>  0 pairs (*) / F7 = 3  =>  0 pairs (X)
E3,E7: 3.. / E3 = 3  =>  0 pairs (X) / E7 = 3  =>  0 pairs (_)
F3,F7: 3.. / F3 = 3  =>  0 pairs (*) / F7 = 3  =>  0 pairs (X)
G2,G4: 3.. / G2 = 3  => 12 pairs (_) / G4 = 3  => 12 pairs (_)
I2,I4: 3.. / I2 = 3  => 12 pairs (_) / I4 = 3  => 12 pairs (_)
G4,I4: 4.. / G4 = 4  => 12 pairs (_) / I4 = 4  => 12 pairs (_)
B7,B9: 4.. / B7 = 4  => 15 pairs (_) / B9 = 4  => 15 pairs (_)
B2,B3: 5.. / B2 = 5  => 16 pairs (_) / B3 = 5  => 16 pairs (_)
F1,I1: 5.. / F1 = 5  =>  0 pairs (*) / I1 = 5  =>  0 pairs (X)
F8,I8: 5.. / F8 = 5  =>  0 pairs (X) / I8 = 5  =>  0 pairs (_)
H5,I5: 6.. / H5 = 6  =>  0 pairs (X) / I5 = 6  => 13 pairs (_)
E1,E8: 6.. / E1 = 6  =>  0 pairs (*) / E8 = 6  =>  0 pairs (X)
C2,C3: 7.. / C2 = 7  => 15 pairs (_) / C3 = 7  =>  0 pairs (X)
E7,E9: 7.. / E7 = 7  =>  0 pairs (X) / E9 = 7  => 14 pairs (_)
B2,B3: 8.. / B2 = 8  => 16 pairs (_) / B3 = 8  => 16 pairs (_)
H5,I5: 8.. / H5 = 8  => 13 pairs (_) / I5 = 8  =>  0 pairs (X)
C1,C3: 9.. / C1 = 9  => 15 pairs (_) / C3 = 9  =>  0 pairs (X)
C1,G1: 9.. / C1 = 9  => 15 pairs (_) / G1 = 9  =>  0 pairs (X)
* DURATION: 0:00:45.234550  START: 12:22:08.002699  END: 12:22:53.237249 2017-05-04
* CP COUNT: (28)
* SOLUTION FOUND

--------------------------------------------------
* PREPARE PR GRAPH
* PAIR REDUCTION ..
* LEVEL 0 PASS 1 ROUND 1 (AUTO SOLVE) (B2,B3,B8,C1,C2,D7,E1,E3,E8,E9,G4,H5,I4,I5)
* 23.7...4.1...94...4........925681.7.3749521..6183475298.1......7.24...3.5.3......
* PAIR C1: 6,9 BLK 1
C3: 6,9,7                                # reduction candidate for 6,9
C3: 7 => CTR
* 239765841186294.5.457138...925681.7.3749521866183475298.15.3...7.241..355.38...1.
C3: 6,9                                  # 15 pairs
* PAIR C1: 6,9 ROW 1
G1: 6,9,8                                # reduction candidate for 6,9
G1: 6,9 => CTR
* 23.71..4.1...94...4...36.1.925681.7.3749521..6183475298.1..3...7924658315.31.....
G1: 8 => SOLVED
* 239765841157894263486123957925681374374952186618347529841536792792418635563279418
* PAIR B2: 5,8 ROW 2
D2: 5,8,2                                # reduction candidate for 5,8
D2: 5,8                                  # 18 pairs
H2: 5,8,6                                # reduction candidate for 5,8
H2: 5,8 => CTR
* 23.765.411..294...4..138...925681.7.3749521.86183475298.15.3...7.241.8355.38...1.
H2: 6                                    # 15 pairs
I2: 5,8,2,3,6,7                          # reduction candidate for 5,8
I2: 5,8 => CTR
* 23.7.5.4.15729436848.136...9256814733749521866183475298.15.3.9.7.24...355.3....1.
I2: 2,3,6,7                              # 14 pairs
* PAIR C2: 6,7 BLK 1
C3: 6,7,9                                # reduction candidate for 6,7
C3: 9 => CTR
* 23671.94.1.7.94...4.9..6...925681.7.3749521..6183475298.1..3...7.246.8315.31.8...
C3: 6,7                                  # 15 pairs
* PAIR C2: 6,7 ROW 2
G2: 6,7,2,3,8                            # reduction candidate for 6,7
G2: 6,7 => CTR
* 23.765.411..294..34..138...9256813743749521.86183475298.15.3...7.241.8355.38...1.
G2: 2,3,8                                # 14 pairs
I2: 6,7,2,3,5,8                          # reduction candidate for 6,7
I2: 6,7 => CTR
* 23.765.411..2943..4..138...9256814733749521.86183475298.15.3...7.241.8355.38...1.
I2: 2,3,5,8                              # 14 pairs
* PAIR B3: 5,8 ROW 3
D3: 5,8,1,2                              # reduction candidate for 5,8
D3: 5,8 => CTR
* 23.71..4.1...94...4......1.925681.7.3749521..6183475298.1......7924658315.31.8...
D3: 1,2                                  # 15 pairs
F3: 5,8,3,6                              # reduction candidate for 5,8
F3: 5,8 => CTR
* 2397.58411...94...4..138...925681.7.3749521..6183475298.15.3...7.241..355.38...1.
F3: 3,6                                  # 15 pairs
H3: 5,8,1,6,9                            # reduction candidate for 5,8
H3: 5,8 => SOLVED
* 239765841157894263486123957925681374374952186618347529841536792792418635563279418
H3: 1,6,9                                # 14 pairs
I3: 5,8,1,2,6,7                          # reduction candidate for 5,8
I3: 5,8 => CTR
* 23.7.8945187594.6.459..6718925681.7.3749521866183475298.12...5.7.24.5.3.5.3......
I3: 1,2,6,7                              # 14 pairs
* PAIR E1: 1,6 ROW 1
I1: 1,6,5,8                              # reduction candidate for 1,6
I1: 1,6 => SOLVED
* 239765841157894263486123957925681374374952186618347529841536792792418635563279418
I1: 5,8 => CTR
* 23.71..4.1...94...4......1.925681.7.3749521..6183475298.1......7924658315.31.8...
* PAIR E3: 2,3 COL E
E7: 2,3,7                                # reduction candidate for 2,3
E7: 7 => CTR
* 23.765.411..294...4..138...925681.7.3749521..6183475298.1573...7.241.8355.382..1.
E7: 2,3                                  # 14 pairs
* PAIR H5: 6,8 COL H
H2: 6,8,5                                # reduction candidate for 6,8
H2: 6,8                                  # 17 pairs
H3: 6,8,1,5,9                            # reduction candidate for 6,8
H3: 6,8 => CTR
* 23976584118.294.5.45.138962925681.7.3749521866183475298.15.3.9.7.241.6355.38.6.1.
H3: 1,5,9                                # 14 pairs
H9: 6,8,1,9                              # reduction candidate for 6,8
H9: 6,8 => CTR
* 23.71..4.1...94.5.45.....1.925681.7.3749521..6183475298.15...9.7.246..3.5.31.....
H9: 1,9                                  # 15 pairs
* PAIR I5: 6,8 COL I
I1: 6,8,1,5                              # reduction candidate for 6,8
I1: 6,8 => CTR
* 23.715.4.1...94...4....6...925681.7.3749521..6183475298.15.3...7.246..3.5.3......
I1: 1,5                                  # 15 pairs
I2: 6,8,2,3,5,7                          # reduction candidate for 6,8
I2: 6,8 => CTR
* 23.765.411.72943..4.6138...9256814733749521..6183475298.15.3...7.241.8355.38...1.
I2: 2,3,5,7                              # 14 pairs
I3: 6,8,1,2,5,7                          # reduction candidate for 6,8
I3: 6,8                                  # 18 pairs
I8: 6,8,1,5                              # reduction candidate for 6,8
I8: 6,8 => CTR
* 23.7...4.1...94...4........925681.7.3749521..6183475298.1......7.2415.3.5.3......
I8: 1,5                                  # 15 pairs
I9: 6,8,1,2,4,7                          # reduction candidate for 6,8
I9: 6,8                                  # 18 pairs
* PAIR B8: 6,9 BLK 7
B7: 6,9,4                                # reduction candidate for 6,9
B7: 6,9                                  # 15 pairs
B9: 6,9,4                                # reduction candidate for 6,9
B9: 6,9                                  # 15 pairs
* PAIR B8: 6,9 ROW 8
F8: 6,9,5,8                              # reduction candidate for 6,9
F8: 6,9 => CTR
* 23.7.5.4.1...94...4........925681.7.3749521..6183475298.15.....7.241.8355.3......
F8: 5,8                                  # 15 pairs
G8: 6,9,8                                # reduction candidate for 6,9
G8: 6,9 => SOLVED
* 239765841157894263486123957925681374374952186618347529841536792792418635563279418
G8: 8 => CTR
* 23.71..4.1...94...4....6...925681.7.3749521..6183475298.1..3...7.246.8315.31.8...
* PAIR D7: 2,5 ROW 7
I7: 2,5,4,6,7                            # reduction candidate for 2,5
I7: 2,5 => SOLVED
* 239765841157894263486123957925681374374952186618347529841536792792418635563279418
I7: 4,6,7                                # 14 pairs
* PAIR D7: 2,5 COL D
D2: 2,5,8                                # reduction candidate for 2,5
D2: 2,5                                  # 17 pairs
D3: 2,5,1,8                              # reduction candidate for 2,5
D3: 2,5 => CTR
* 23.71..4.1..894...48.....1.925681.7.3749521..6183475298.1......7924658315.31.8...
D3: 1,8                                  # 15 pairs
* PAIR E8: 1,6 ROW 8
I8: 1,6,5,8                              # reduction candidate for 1,6
I8: 1,6 => CTR
* 23.718.451..594...4........925681.7.3749521..6183475298.12...5.7924.583.5.3.7....
I8: 5,8 => SOLVED
* 239765841157894263486123957925681374374952186618347529841536792792418635563279418
* PAIR E9: 2,7 BLK 8
E7: 2,7,3                                # reduction candidate for 2,7
E7: 2,7 => CTR
* 23.765.411..294...4..138...925681.7.3749521..6183475298.15.3...7.241.8355.38...1.
E7: 3 => SOLVED
* 239765841157894263486123957925681374374952186618347529841536792792418635563279418
* PAIR E9: 2,7 ROW 9
G9: 2,7,4,6,8,9                          # reduction candidate for 2,7
G9: 2,7                                  # 16 pairs
I9: 2,7,1,4,6,8                          # reduction candidate for 2,7
I9: 2,7                                  # 16 pairs
* INCONCLUSIVE
* SAVE PR GRAPH xx-top500-276-base-pr-000.dot
* REASONING
* DIS # C3: 7 => CTR => C3: 6,9
* DIS # G1: 6,9 => CTR => G1: 8
* PRF # G1: 8 => SOL
* DIS # H2: 5,8 => CTR => H2: 6
* DIS # I2: 5,8 => CTR => I2: 2,3,6,7
* DIS # C3: 9 => CTR => C3: 6,7
* DIS # G2: 6,7 => CTR => G2: 2,3,8
* DIS # I2: 6,7 => CTR => I2: 2,3,5,8
* DIS # D3: 5,8 => CTR => D3: 1,2
* DIS # F3: 5,8 => CTR => F3: 3,6
* PRF # H3: 5,8 => SOL
* DIS # I3: 5,8 => CTR => I3: 1,2,6,7
* PRF # I1: 1,6 => SOL
* DIS # I1: 5,8 => CTR => I1: 1,6
* DIS # E7: 7 => CTR => E7: 2,3
* DIS # H3: 6,8 => CTR => H3: 1,5,9
* DIS # H9: 6,8 => CTR => H9: 1,9
* DIS # I1: 6,8 => CTR => I1: 1,5
* DIS # I2: 6,8 => CTR => I2: 2,3,5,7
* DIS # I8: 6,8 => CTR => I8: 1,5
* DIS # F8: 6,9 => CTR => F8: 5,8
* PRF # G8: 6,9 => SOL
* DIS # G8: 8 => CTR => G8: 6,9
* PRF # I7: 2,5 => SOL
* DIS # D3: 2,5 => CTR => D3: 1,8
* DIS # I8: 1,6 => CTR => I8: 5,8
* PRF # I8: 5,8 => SOL
* DIS # E7: 2,7 => CTR => E7: 3
* PRF # E7: 3 => SOL
* CNT  29 HDP CHAINS /  57 HYP OPENED

--------------------------------------------------
* PREPARE PR GRAPH
* PAIR REDUCTION ..
* LEVEL 0 PASS 1 ROUND 1 (AUTO SOLVE) (B2,B3,B8,C1,C2,D7,E1,E3,E8,E9,G4,H5,I4,I5)
* 23.7...4.1...94...4........925681.7.3749521..6183475298.1......7.24...3.5.3......
* PAIR C1: 6,9 BLK 1
C3: 6,9,7                                # reduction candidate for 6,9
C3: 7 => CTR
* 239765841186294.5.457138...925681.7.3749521866183475298.15.3...7.241..355.38...1.
* PAIR B2: 5,8 ROW 2
D2: 5,8,2                                # reduction candidate for 5,8
D2: 5,8                                  # 18 pairs
H2: 5,8,6                                # reduction candidate for 5,8
H2: 5,8 => CTR
* 23.765.411.7294...4.6138.9.925681.7.3749521.86183475298.15.3.6.7.241..355.38.....
I2: 5,8,2,3                              # reduction candidate for 5,8
I2: 5,8 => CTR
* 23.7.5.4.15729436848.136...9256814733749521866183475298.15.3.9.7.24...355.3....1.
* RESTART
* PAIR B2: 5,8 ROW 2
D2: 5,8,2                                # reduction candidate for 5,8
D2: 2 => CTR
* 23.7...4.15729486348..3....9256813743749521866183475298.15.3.9.7.24..6355.38.6...
* PAIR RESTART
* PAIR B3: 5,8 ROW 3
D3: 5,8,1,2                              # reduction candidate for 5,8
D3: 5,8 => CTR
* 23.716.451.7.94.6.4.6.23917925681.7.3749521866183475298.123.7547924658315.317..9.
F3: 5,8,3,6                              # reduction candidate for 5,8
F3: 5,8 => CTR
* 2397..84.1.7.94.6.4.623....925681.7.3749521866183475298.15.3.9.7.24..6355.31.....
I3: 5,8,1,7                              # reduction candidate for 5,8
I3: 5,8 => CTR
* 23.7.8945187594.6.459..6718925681.7.3749521866183475298.12...5.7.24.5.3.5.3......
* RESTART
* PAIR RESTART
* PAIR E3: 2,3 COL E
E7: 2,3,7                                # reduction candidate for 2,3
E7: 7 => CTR
* 23.7...4.1.7.94.6.4...36...925681.7.3749521866183475298.1.73...7.246..315.312..9.
* PAIR RESTART
* PAIR B8: 6,9 BLK 7
B7: 6,9,4                                # reduction candidate for 6,9
B7: 6,9                                  # 26 pairs
B9: 6,9,4                                # reduction candidate for 6,9
B9: 6,9                                  # 23 pairs
* PAIR B8: 6,9 ROW 8
F8: 6,9,5,8                              # reduction candidate for 6,9
F8: 6,9 => CTR
* 23.7.5.4.157894.6.48.....5.925681.7.3749521866183475298.15...9.7.241.8355.3278.14
G8: 6,9,8                                # reduction candidate for 6,9
G8: 6,9 => SOLVED
* 239765841157894263486123957925681374374952186618347529841536792792418635563279418
* DURATION: 0:00:19.544284  START: 12:23:44.593660  END: 12:24:04.137944 2017-05-04
* SOLUTION FOUND
* SAVE PR GRAPH xx-top500-276-base-pr-001.dot
* REASONING
* DIS # C3: 7 => CTR => C3: 6,9
* DIS C3: 6,9 # H2: 5,8 => CTR => H2: 6
* DIS C3: 6,9 + H2: 6 # I2: 5,8 => CTR => I2: 2,3
* DIS C3: 6,9 + H2: 6 + I2: 2,3 # D2: 2 => CTR => D2: 5,8
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 # D3: 5,8 => CTR => D3: 1,2
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 # F3: 5,8 => CTR => F3: 3,6
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 # I3: 5,8 => CTR => I3: 1,7
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 # E7: 7 => CTR => E7: 2,3
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 # F8: 6,9 => CTR => F8: 5,8
* PRF C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 + F8: 5,8 # G8: 6,9 => SOL
* STA C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 + F8: 5,8 + G8: 6,9
* CNT  10 HDP CHAINS /  16 HYP OPENED

Header Info

Top 500 Minimum 17 276

solution: 239765841157894263486123957925681374374952186618347529841536792792418635563279418
info: 2205     FNBTHWY  S8.f     18054

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

Solution

position: 239765841157894263486123957925681374374952186618347529841536792792418635563279418 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:

* INC # C3: 6,9 => UNS
* DIS # C3: 7 => CTR => C3: 6,9
* DIS # G1: 6,9 => CTR => G1: 8
* PRF # G1: 8 => SOL
* INC # D2: 5,8 => UNS
* DIS # H2: 5,8 => CTR => H2: 6
* INC # H2: 6 => UNS
* DIS # I2: 5,8 => CTR => I2: 2,3,6,7
* INC # I2: 2,3,6,7 => UNS
* INC # C3: 6,7 => UNS
* DIS # C3: 9 => CTR => C3: 6,7
* DIS # G2: 6,7 => CTR => G2: 2,3,8
* INC # G2: 2,3,8 => UNS
* DIS # I2: 6,7 => CTR => I2: 2,3,5,8
* INC # I2: 2,3,5,8 => UNS
* DIS # D3: 5,8 => CTR => D3: 1,2
* INC # D3: 1,2 => UNS
* DIS # F3: 5,8 => CTR => F3: 3,6
* INC # F3: 3,6 => UNS
* PRF # H3: 5,8 => SOL
* INC # H3: 1,6,9 => UNS
* DIS # I3: 5,8 => CTR => I3: 1,2,6,7
* INC # I3: 1,2,6,7 => UNS
* PRF # I1: 1,6 => SOL
* DIS # I1: 5,8 => CTR => I1: 1,6
* INC # E7: 2,3 => UNS
* DIS # E7: 7 => CTR => E7: 2,3
* INC # H2: 6,8 => UNS
* DIS # H3: 6,8 => CTR => H3: 1,5,9
* INC # H3: 1,5,9 => UNS
* DIS # H9: 6,8 => CTR => H9: 1,9
* INC # H9: 1,9 => UNS
* DIS # I1: 6,8 => CTR => I1: 1,5
* INC # I1: 1,5 => UNS
* DIS # I2: 6,8 => CTR => I2: 2,3,5,7
* INC # I2: 2,3,5,7 => UNS
* INC # I3: 6,8 => UNS
* DIS # I8: 6,8 => CTR => I8: 1,5
* INC # I8: 1,5 => UNS
* INC # I9: 6,8 => UNS
* INC # B7: 6,9 => UNS
* INC # B9: 6,9 => UNS
* DIS # F8: 6,9 => CTR => F8: 5,8
* INC # F8: 5,8 => UNS
* PRF # G8: 6,9 => SOL
* DIS # G8: 8 => CTR => G8: 6,9
* PRF # I7: 2,5 => SOL
* INC # I7: 4,6,7 => UNS
* INC # D2: 2,5 => UNS
* DIS # D3: 2,5 => CTR => D3: 1,8
* INC # D3: 1,8 => UNS
* DIS # I8: 1,6 => CTR => I8: 5,8
* PRF # I8: 5,8 => SOL
* DIS # E7: 2,7 => CTR => E7: 3
* PRF # E7: 3 => SOL
* INC # G9: 2,7 => UNS
* INC # I9: 2,7 => UNS
* CNT  57 HDP CHAINS /  57 HYP OPENED

A2. Pair Reduction

Full list of HDP chains traversed:

* INC # C3: 6,9 => UNS
* DIS # C3: 7 => CTR => C3: 6,9
* INC C3: 6,9 # D2: 5,8 => UNS
* DIS C3: 6,9 # H2: 5,8 => CTR => H2: 6
* DIS C3: 6,9 + H2: 6 # I2: 5,8 => CTR => I2: 2,3
* INC C3: 6,9 + H2: 6 + I2: 2,3 # D2: 5,8 => UNS
* DIS C3: 6,9 + H2: 6 + I2: 2,3 # D2: 2 => CTR => D2: 5,8
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 # D3: 5,8 => CTR => D3: 1,2
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 # F3: 5,8 => CTR => F3: 3,6
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 # I3: 5,8 => CTR => I3: 1,7
* INC C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 # E7: 2,3 => UNS
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 # E7: 7 => CTR => E7: 2,3
* INC C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 # B7: 6,9 => UNS
* INC C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 # B9: 6,9 => UNS
* DIS C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 # F8: 6,9 => CTR => F8: 5,8
* PRF C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 + F8: 5,8 # G8: 6,9 => SOL
* STA C3: 6,9 + H2: 6 + I2: 2,3 + D2: 5,8 + D3: 1,2 + F3: 3,6 + I3: 1,7 + E7: 2,3 + F8: 5,8 + G8: 6,9
* CNT  16 HDP CHAINS /  16 HYP OPENED