https://threewaychessorg.datajug.com/Principles%20behind%20points%20awarded%20in%203WC_v2b.pdf
3 player chess

[Date "07/07/2021 08:57上午"]
[FEN rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1]
[White "linojim (597)"]
[Black "sksshooter (636)"]
[Result "sksshooter赢了(对手弃赛)"]
1.a4 {15:10} e5 {15:05} 2.b3 {15:17} d5 {15:12} 3.Bb2 {15:25} Nc6 {15:19} 4.h4 {15:34} Nf6 {15:26} 5.f3 {15:39} d4 {15:35} 6.d3 {15:43} g6 {15:36} 7.Nd2 {15:24} Bg7 {15:40} 8.Nc4 {15:32} O-O {15:47} 9.g4 {15:37} b5 {15:46} 10.Na3 {15:41} bxa4 {15:54} 11.bxa4 {15:49} Nb4 {16:00} 12.Nb5 {15:52} c6 {16:03} 13.Na3 {15:57} a5 {16:06} 14.c3 {16:02} dxc3 {16:13} 15.Bxc3 {16:11} Rb8 {16:17} 16.Bxe5 {16:17} Rb7 {16:16} 17.Nc4 {16:23} Re7 {15:52} 18.Nd6 {16:17} Rxe5 {15:43} 19.Nc4 {16:13} Ree8 {15:44} 20.h5 {16:03} gxh5 {15:27} 21.g5 {16:05} Nd7 {15:32} 22.Rxh5 {16:13} Bxa1 {15:33} 23.Qxa1 {16:19} Re6 {15:41} 24.Bh3 {16:20} Re7 {15:37} {sksshooter赢了(对手弃赛)}

It is already a popular variant https://youtu.be/9OGP8GZUpho !
I'm not sure I'm getting the joke.
https://en.wikipedia.org/wiki/Three-player_chess