fairypieces / fairypieces-engine

a simulation and verification engine for chess-like games

Fairy Pieces Engine

The Fairy Pieces Engine is a simulation and verification engine for chess-like games. Licensed under AGPL v3.0.

Goals

1. Provide data structures capable of representing chess and its many derivative variants.
2. Provide the ability to represent custom pieces with user-defined moves.

Which variants should the engine be capable of representing?

• variants with incomplete information:
  • kriegspiel (war game) -- cannot see enemy pieces;
  • dark chess (fog of war) -- can only see tiles reachable by a move;
• multimove variants:
  • progressive chess;
  • marseillais chess;
• variants with different victory conditions:
  • losing chess;
  • a variable number of royal pieces (including 0);
• custom (asymmetric) setup variants;
• variants with custom board size or shape:
  • infinite chess;
  • hexagonal chess;
  • triangular chess;
  • rhombic chess;
• multiplayer variants:
  • four-player chess;
  • team chess;
  • taking turns;
  • one player decides on piece (or piece type) to be moved, his teammate decides on the move;