N chess

Chess.jschess.js is a Javascript chess library that is used for chess move generation/validation,piece placement/movement, and check/checkmate/stalemate detection - basically everythingbut the AI.Using chess.js in a browser is straight-forward: var chess = new Chess(); ...Using chess.js in node.js is equally easy:var ch = require('/chess.js')var chess = new ch.Chess();...Example CodeThe code below plays a complete game of chess ... randomly.var sys = require('sys'), ch = require('./chess');var chess = new ch.Chess();while (!chess.game_over()) { sys.puts('position: ' + chess.fen()); var moves = chess.moves(); var move = moves[Math.floor(Math.random() * moves.length)]; chess.move(move); sys.puts('move: ' + move);}APIConstructor: Chess([ fen ])The Chess() constructor takes a optional parameter which specifies the board configurationin Forsyth-Edwards Notation.// board defaults to the starting position when called with no parametersvar chess = new Chess();// pass in a FEN string to load a particular positionvar chess = new Chess('r1k4r/p2nb1p1/2b4p/1p1n1p2/2PP4/3Q1NB1/1P3PPP/R5K1 b - c3 0 19');.ascii()Returns a string containing an ASCII diagram of the current position.var chess = new Chess();// make some moveschess.move('e4');chess.move('e5');chess.move('f4');chess.ascii();// -> ' +------------------------+// 8 | r n b q k b n r |// 7 | p p p p . p p p |// 6 | . . . . . . . . |// 5 | . . . . p . . . |// 4 | . . . . P P . . |// 3 | . . . . . . . . |// 2 | P P P P . . P P |// 1 | R N B Q K B N R |// +------------------------+// a b

Move object (only the 'to', 'from', and when necessary'promotion', fields are needed):var chess = new Chess();chess.move({ from: 'g2', to: 'g3' });// -> { color: 'w', from: 'g2', to: 'g3', flags: 'n', piece: 'p', san: 'g3' }.moves([ options ])Returns a list of all legal moves from the current position. The function be passed a options hash which controls the verbosity of the return values (this may change in the future).var chess = new Chess();chess.moves();// -> ['a3', 'a4', 'b3', 'b4', 'c3', 'c4', 'd3', 'd4', 'e3', 'e4', 'f3', 'f4', 'g3', 'g4', 'h3', 'h4', 'Na3', 'Nc3', 'Nf3', 'Nh3']chess.moves({ verbose: true });// -> [{ color: 'w', from: 'a2', to: 'a3', flags: 'n', piece: 'p', san 'a3' # a captured: key is included when the move is a capture # a promotion: key is included when the move is a promotion }, ... ]The piece, captured, and promotion fields contain the lowercaserepresentation of the applicable piece.The flags field in verbose mode may contain one or more of the following values:'n' - a non-capture'b' - a pawn push of two squares'e' - an en passant capture'c' - a standard capture'p' - a promotion'k' - kingside castling'q' - queenside castlingA flag of 'pc' would mean that a pawn captured a piece on the 8th rank and promoted..pgn([ options ])Returns the game in PGN format. Options is an optional parameter which may includemax width and/or a newline character settings.var chess = new Chess();chess.info('White', 'Plunky', 'Black', 'Plinkie');chess.move('e4');chess.move('e5');chess.move('Nc3');chess.move('Nc6');chess.pgn({ max_width: 5, newline_char: '' });// -> '[White "Plunky"][Black "Plinkie"]1. e4 e52. Nc3 Nc6'.put(piece,

Overview Credits Reviews Covers Screenshots Videos Promos Trivia Specs Releases Patches Prices Forum Contribute Moby Score n/a Collected By 4 players Wanted: We need a MobyGames approved description! Contribute Description (+4 points) Official Description (Ad Blurb) It took 2,000 years for someone to make chess better! The most challenging game on earth comes to life in Battle Chess. An entire medieval world at war is reflected on the checkered field. Everyone who's ever had a knight take a pawn has seen that capture as more than one piece replacing another on the board. In player's minds, the bold knight, resplendent in his armor of silver or ebon, sallies forth and slays the foul footsoldier. Combat, mortal combat, is the heart and soul of chess, but this aspect of it can only live in the mind's eye... until now! Lots of computer chess games capture the basics of chess. Only Battle Chess brings chess to life by combining a magnificent chess logic system with colorful, humorous, and dramatic three-dimensional animations. Battle Chess: Game of Kings A new version of the classic animated chess game for Windows Vista, 7 and 8 is in development! Updated with all new animations and features, this is the ultimate version of Battle Chess. Turn-based Multiplayer: Play against the computer with scalable difficulty or against live opponents via the internet.Skill Challenge: Test your Chess skills by completing game play scenario challenges in a certain number of moves.Battleground Training: Control your environment. Place pieces strategically on the chess

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Is drawn (50-move rule or insufficient material).var chess = new Chess('4k3/4P3/4K3/8/8/8/8/8 b - - 0 78');chess.in_draw();// -> true.in_stalemate()Returns true or false if the side to move has been stalemated.var chess = new Chess('4k3/4P3/4K3/8/8/8/8/8 b - - 0 78');chess.in_stalemate();// -> true.in_threefold_repetition()Returns true or false if the current board position has occurred three or moretimes.var chess = new Chess('rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1');// -> true// rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq occurs 1st timechess.in_threefold_repetition();// -> falsechess.move('Nf3'); chess.move('Nf6') chess.move('Ng1'); chess.move('Ng8');// rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq occurs 2nd timechess.in_threefold_repetition();// -> falsechess.move('Nf3'); chess.move('Nf6') chess.move('Ng1'); chess.move('Ng8');// rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq occurs 3rd timechess.in_threefold_repetition();// -> true.header()Allows header information to be added to PGN output. Any number of key/valuepairs can be passed to .header().chess.header('White', 'Robert James Fischer');chess.header('Black', 'Mikhail Tal');// orchess.header('White', 'Morphy', 'Black', 'Anderssen', 'Date', '1858-??-??');.insufficient_material()Returns true if the game is drawn due to insufficient material (K vs. K,K vs. KB, or K vs. KN); otherwise false.var chess = new Chess('k7/8/n7/8/8/8/8/7K b - - 0 1');chess.insufficient_material()// -> true.load(fen)The board is cleared and the FEN string is loaded. Returns true if position wassuccessfully loaded, otherwise false.var chess = new Chess();chess.load('4r3/8/2p2PPk/1p6/pP2p1R1/P1B5/2P2K2/3r4 w - - 1 45');// -> truechess.load('4r3/8/X12XPk/1p6/pP2p1R1/P1B5/2P2K2/3r4 w - - 1 45');// -> false, bad piece X.load_pgn(pgn, [ options ])Load the moves of a game stored inPortal Game Notation.Options is a optional parameter that contains a 'newline_char' denoting the linedelimiter (the default delimiter is '\n'). Returns true if the PGN was parsedsuccessfully, otherwise false.var chess = new Chess();pgn = ['[Event "Casual Game"]', '[Site "Berlin GER"]', '[Date "1852.??.??"]', '[EventDate "?"]', '[Round "?"]', '[Result "1-0"]', '[White "Adolf