I am sure there are other more subtle ways to go about it but this seems about as fast as I can make it for a general brute-force solution (0.11s)
This one seems to work for the large test case, too, although it is not a general solution [for size(p,1)>100 it only tests corner points].
Factorize THIS, buddy
Implement simple rotation cypher
Magic is simple (for beginners)
convert matrix to single column
Slitherlink I: Trivial
PONG 001: Player vs Wall, 4 Lives, Interactive download
GJam 2011 Africa Qualifier C: House, maximum area rectangle
PACMAT 09 - Awesome Tunnelling Ghosts, Equal Speed, 20 Lives, Game Download
String Find with Wildcards of a Cell array
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