minichess package

Package minichess is an on-chain chess game (standard 8x8 board).

Two ways to play:

• Solo: NewSoloGame starts a game against the built-in bot. The bot replies inside the same transaction as your move.
• Two players: Challenge creates a game (open to anyone, or for one invited address); AcceptChallenge takes the empty seat.

Moves use coordinate notation: "e2e4", "g1f3", castling as the king's move ("e1g1"), en passant as the pawn's move to the target square, and promotion as "e7e8" (queen) or "e7e8n" (under-promotion). Visit the realm in gnoweb to see the board and click legal moves.