dear Erik, > Does the number include symmetrical positions (rotations / mirroring / color > reversal)?
Yes, of course. This is also apparent from the table at the bottom listing 57 legal 2x2 positions. Figure 4 on page 5 of our paper http://tromp.github.io/go/gostate.pdf shows how these 57 positions form 13 equivalence classes with respect to mirroring/reflection which further reduces to 7 classes when considering color symmetry as well. regards, -John _______________________________________________ Computer-go mailing list Computer-go@computer-go.org http://computer-go.org/mailman/listinfo/computer-go