chessGMHow to win a won position: trade pieces, not pawns, take away your opponent's tricks, and simplify into an ending you can win. Then the other side: how to defend a worse position and set problems, right down to a stalemate save. This is a strategy course with 2 lessons and 5 interactive exercises, suited to players rated around 1300 (improving players). Every exercise is played on a real board with feedback after each move, there is nothing to install, and it is free.