p.boxed
  | Captures turn the capturer into the captured piece.

p.
  Everything is the same as in orthodox rules, with one exception:
  after each capture, the capturer takes the nature of the captured piece.
  The goal is still to checkmate, and stalemate is a draw.

p.
  For example after 1.e4 e5 2.Nf3 b6 3.Nxe5, e5 is now a white pawn.
  This capture seems bad, but anything which capture e5 later
  will turn into a pawn...

figure.diagram-container
  .diagram.diag12
    | fen:rnbqkbnr/p1pp1ppp/1p6/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R:
  .diagram.diag22
    | fen:rnbqkbnr/p1pp1ppp/1p6/4P3/4P3/8/PPPP1PPP/RNBQKB1R:
  figcaption After 1.e4 e5 2.Nf3 b6 (left) with 3.Nxe5 (right)

p If the king captures, it transforms as well but stays royal.

h3 More information

p
  a(href="https://www.chessvariants.com/difftaking.dir/cannibal.html")
    | Cannibal Chess
  |  on chessvariants.com.