2 | Win by eliminating all opponent pieces of the same type.
7 li Chessboard: standard.
9 li Non-capturing moves: standard.
10 li Special moves: standard.
11 li Captures: standard.
12 li End of game: pieces extinction.
17 | Standard rules apply, but the game ends when all pieces of a kind disappeared.
18 | Kings are treated as normal pieces (no royal power), but may castle -
19 | without any concern about checks.
20 | Pawns may promote into king.
21 | If all pieces of a kind disappear, the game is lost; except it's a pawns extinction
22 | which results in a non-pawn extinction by capturing and promoting on the last rank.
27 Win by eliminating all enemy pawns, or rooks, or knights, or bishops, or queen(s),
28 or king(s) (there may be several if promotions happened).
30 figure.diagram-container
32 | fen:n3brk1/5ppp/3q4/8/8/8/1Q3PPP/K1R1B1N1:
33 figcaption White can win in 2 moves: 1.Qb7, 2.QxN
38 a(href="https://www.chessvariants.com/winning.dir/extinction.html") Extinction chess
39 | on chessvariants.com.