Joseph Bertin (1695-1736) was a chess author and a Captain in the English army (he served in the West Indies). In 1735 he published The Noble Game of Chess, Containing Rules and Instructions for the Use of those who have already a little Knowledge of this Game. It was the first worthwhile chess book in English and, at the time, only available at Slaughter’s Coffee House (founded by John Slauter in 1692). Bertin had 19 rules to follow during play. One of them was: to free your game, take off some of your adversary’s men, if possible for nothing.