The compatibility problem is to find a figure that can be tiled with each of a set of polyforms. Here I show minimal known compatibility figures for the Hexagon hexiamond with other polyiamonds. In other words, these are the smallest known polyhexes that can be tiled with given polyiamonds.
If you find a smaller solution or solve an unsolved case, please let me know.
Last revised 2023-12-22.