OK, I was not entirely correct. The variant that I referred to was called Losers Chess, not Losing Chess. Losers Chess is a variant played on ICC (chessclub.com), and perhaps also FICS (freechess.org), and supported by WinBoard, which acts as a client to these Internet Chess Servers. Rumor has it that it started as a failed attempt to implement Suicide, which would explain why there are no references to it outside these ICS. Some ofther variants on FICS/ICC seem not so much designed as well having accidentally occurred when someone did something strange on the server, e.g. TwoKings.
So there isn't really any contradiction. I just wanted to point out that a variant having both mandatory capture and the checking rule does exist.
BTW, I nowadays also often encounter the term Anti-Chess. Perhasp Suicide is called that way on LiChess or chess.com.
OK, I was not entirely correct. The variant that I referred to was called Losers Chess, not Losing Chess. Losers Chess is a variant played on ICC (chessclub.com), and perhaps also FICS (freechess.org), and supported by WinBoard, which acts as a client to these Internet Chess Servers. Rumor has it that it started as a failed attempt to implement Suicide, which would explain why there are no references to it outside these ICS. Some ofther variants on FICS/ICC seem not so much designed as well having accidentally occurred when someone did something strange on the server, e.g. TwoKings.
So there isn't really any contradiction. I just wanted to point out that a variant having both mandatory capture and the checking rule does exist.
BTW, I nowadays also often encounter the term Anti-Chess. Perhasp Suicide is called that way on LiChess or chess.com.