A B C D E F G H I J K L M N O
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  1 └┴┴┴┴┴┴┴┴┴┴┴┴┴┘ 

[ 1]● ==> H8	[ 2]○ ==> H7	[ 3]● ==> G6	[ 4]○ ==> G7	[ 5]● ==> F8
[ 6]○ ==> F7	[ 7]● ==> E7	[ 8]○ ==> I7	[ 9]● ==> J7	[10]○ ==> G9
[11]● ==> D8	[12]○ ==> G8	[13]● ==> F6	[14]○ ==> G5	[15]● ==> D6
[16]○ ==> H6	[17]● ==> C6	[18]○ ==> E6	[19]● ==> C5	[20]○ ==> B4
[21]● ==> C9	[22]○ ==> B10	[23]● ==> C7	[24]○ ==> C8	[25]● ==> F4
[26]○ ==> E5	[27]● ==> B6	[28]○ ==> E9	[29]● ==> D4	[30]○ ==> E3
[31]● ==> E4	[32]○ ==> G4	[33]● ==> D5	[34]○ ==> B7	[35]● ==> D7