+ +
\ /
+ +
x\ /x
| \ / |
| \ / |
+-+ \ / +-+
x + x
+ | +
x\ + /x
| \ | / |
+x-=--+--+x---b---x+---+---------------------=-x+
\ ox + /
\ + a x /
\ + /
\ o /
\ +o-S---+---S-o+ /
\ o /
\ +-x+--+---+---+--+x-+ /
x /| | | | | x
+ || | | b | | +
x || | |x | | x
+ +|+--+---a---+--+ + +
| || o | |
+-o+=-------+--------+o-+
x /x
+-x-+ +
|\
+ \
| o
1 + \
| | +x-+-x+
maze-o--+
1 - Land of Chess - Chessboard
Here is Oyg's universal key.