9 8
(0,1) (2,3) (4,5) (6,7) 
(0,2) (1,3) (4,6) (7,8) 
(0,3) (1,2) (4,7) (5,8) 
(0,4) (1,5) (2,6) (3,8) 
(0,5) (1,4) (3,7) (6,8) 
(0,7) (1,6) (2,5) (4,8) 
(1,7) (2,8) (3,4) (5,6) 
(1,8) (0,6) (3,5) (2,7) 
(3,6) (0,8) (2,4) (5,7) 
nodes: 497121   cpu: 3600116
0: F F F F F F B M M  changes: 1
1: F M M M M M F F E  changes: 0
2: M F M M B M M L M  changes: 1
3: M M F L M B M M F  changes: 1
4: M M M F M L M B M  changes: 1
5: M B L M F M L M L  changes: 1
6: L M B M L M L M F  changes: 1
7: L L M B M F F L L  changes: 1
8: B L L L L L M F M  changes: 1
total boat changes: 8