From Charles Chevrey:
On a grid of 8x8 (with 4 missing squares) 60 pieces are scrambled. You take one out and try to organize the reste in 4, 5 or 6 groups according to your initial option. To move around, you follow 3 simple rules and, at the end, to score anything, you must get the "outcast" back. Yet it gets tricky if you want a good score, which means finishing in a minimum number of moves, specially if the randomness is not on your side.