This version of Squarematch features

In the first, we look at the 18 tiles which have at least three different colors and no two adjacent the same.

A 9 tile subset of this set is available at

Kadon Enterprises

In the second, we look at the 24 "aabc" tiles: those with one side in one color and the other side in two other colors.

Click on the ranges below to see them.

The 5x5 arrangements start with some very nice symmetric solutions.

The images take a few seconds to be generated. You'll need web colors turned on to see the results.

114

172

279

233

Spec1: Torus (6), Corners + Vert Wrap (3), Vert Wrap (4), Corners + Horiz. Wrap

101

Spec2: Corners/Horiz Wrap

197