7 6
(0,1) (2,3) (4,5) 
(0,2) (1,4) (5,6) 
(0,4) (1,5) (3,6) 
(0,5) (1,3) (2,6) 
(0,3) (1,6) (2,4) 
(0,6) (3,4) (2,5) 
(4,6) (1,2) (3,5) 
nodes: 126251   cpu: 1522367
0: F F F F F F E  changes: 0
1: F M M M M B M  changes: 1
2: M F B L L L M  changes: 1
3: M B L M F M L  changes: 1
4: L M F B L M F  changes: 1
5: L L M F B L L  changes: 1
6: B L L L M F F  changes: 1
total boat changes: 6