2 | Win by giving three checks (or a single checkmate).
5 Orthodox rules apply, but giving three checks win the game.
6 Since it is easier than checkmate, most games would end in this way.
9 In the diagram position, 2.Bb5+ c6 3.Bxc6+ is an excellent
10 sacrifice because now only one check will give white victory.
12 figure.diagram-container
14 | fen:rnbqkbnr/ppp1pppp/3p4/8/4P3/8/PPPP1PPP/RNBQKBNR:
16 After the moves 1.e4 d6??
21 | Old variant, playable at several locations including
22 a(href="https://lichess.org/variant/threeCheck") lichess