Heptalion additional boards

This expansion includes all the additional boards that have been or will be released for the original game Heptalion. All the boards share the same constraints: a) Each symbol is shown exactly 8 times. b) Each domino is shown exactly 3 times. c) There are exactly 56 squares; the same number of squares that compose the 28 tiles. The first distribution (the one used in the base game) was found by Néstor Romeral Andrés on Jun-21-2012 and has the shape of a diamond. The second distribution was found by Grant Fikes on Sep-18-2012 and it's rounded. The third distribution is a 'n' and was found by Mark Tilford.