Square Tiles solutions

Square Tiles was solved using F# by 6 contestants. Solution sizes: average 1883 bytes (shortest: 1398; longest: 2254).

588.

LOST (S, L) (1435 B)
1009.

Lanfeust (S, L) (2197 B)
1319.

Kha (S, L) (1398 B)
1636.

lightstar (S, L)
2388.

rd1 (S, L) (2254 B)

2982.

DeexPP (S, L) (2137 B)