How to play
Remove the board two tiles at a time. A tile can be taken when
nothing sits on top of it and either its left or its right side
is clear.
Matching tiles are identical, with two exceptions:
any flower matches any other flower, and
any season matches any other season. Flowers carry a small
F, seasons a small S.
Every deal here is built so it can be cleared, but a careless
match can still strand the board, so undo is unlimited.