; O to move (search to depth 4)
;
;     +---------------+
;    6|               |
;    5|               |
;    4|               |
;    3|               |
;    2|       O       |
;    1|       X X     |
;     +---------------+
;       1 2 3 4 5 6 7
;       
(define b1 '("       |       |       |       |   O   |   XX  " 
	     (0 0 0 2 1 0 0)))

; O to move (search to depth 4)
;
;     +---------------+
;    6|               |
;    5|               |
;    4|               |
;    3|               |
;    2|       O O     |
;    1|     X X X     |
;     +---------------+
;       1 2 3 4 5 6 7

(define b2 '("       |       |       |       |   OO  |  XXX  "
	     (0 0 1 2 2 0 0)))

; O to move (search to depth 4)
;
;     +---------------+
;    6|               |
;    5|               |
;    4|       X       |
;    3|       O       |
;    2|     X X       |
;    1|   O X O       |
;     +---------------+
;       1 2 3 4 5 6 7
;       
(define b3 '("       |       |   X   |   O   |  XX   | OXO   " 
	     (0 1 2 4 0 0 0)))

; X to move (search to depth 4 and 6)
;
;     +---------------+
;    6|               |
;    5|   X   X O     |
;    4|   O   O X   O |
;    3|   X   X O   X |
;    2|   X   O X   O |
;    1|   O O X O   X |
;     +---------------+
;       1 2 3 4 5 6 7
;       
(define b4 '("       | X XO  | O OX O| X XO X| X OX O| OOXO X"
	     (0 5 1 5 5 0 4)))

; X to move (search to depth 4 and 6)
;
;     +---------------+
;    6|               |
;    5|       O       |
;    4|       X     O |
;    3|     O X     O |
;    2|     X O X   X |
;    1|     O X O   X |
;     +---------------+
;       1 2 3 4 5 6 7
;       
(define b5 '("       |   O   |   X  O|  OX  O|  XOX X|  OXO X"
	     (0 0 3 5 2 0 4)))