Rang (<=16) ? S (0 = . 1 = : 2 = / 3 = - 4 = x 5 = o 6 = + 7 = *) 1. LĪsung: Sym.-Gruppe full . . . . o o . . . . . . o . . . . o . . . o . . . . . . o . . . . o . . o . . . o . . . . . . . . o o . . . . . . . . o . . . o . . o . . . . o . . . . . . o . . . o . . . . o . . . . . . o o . . . . N=10(ort1) 1 solutions found 608 positions in 1220 cases checked average number of stones on board 10