Ah .......... the broomstick offcuts!! A truly Proustian "madeleine moment".
I recall once when I was an irresponsible cheating Plt Off slipping a couple of extra men of the opponent's colour onto the board ... and he didn't notice until he realised he had nowhere to put the 9th hacked man ..... he can't have been that dull though - he retired as a 2-star!