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@dexygen dexygen/ng-chess
Created Dec 19, 2014

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<!DOCTYPE html>
<html lang="en">
<head>
<style type="text/css">
td.activePly {background-color:yellow;}
td.darkSquare {
background-color:silver;
width:40pt;
height:40pt;
border-collapse:collapse;
border-color: black;
border-style: solid;
border-width: 1pt 0pt 0pt 1pt;
font-size: 300%
}
td.lightSquare{
width:40pt;
height:40pt;
border-collapse:collapse;
border-color: black;
border-style: solid;
border-width: 1pt 0pt 0pt 1pt;
font-size: 300%
}
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.7/angular.min.js"></script>
<script>
"use strict";
/*! Copyright (c) 2014, Jeff Hlywa (jhlywa@gmail.com)
* Released under the BSD license
* https://github.com/jhlywa/chess.js/blob/master/LICENSE
*/
;var Chess=function(ao){var p="b";var k="w";var E=-1;var X="p";var S="n";var s="b";var H="r";var j="q";var ad="k";var f="pnbrqkPNBRQK";var an="rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";var B=["1-0","0-1","1/2-1/2","*"];var u={b:[16,32,17,15],w:[-16,-32,-17,-15]};var J={n:[-18,-33,-31,-14,18,33,31,14],b:[-17,-15,17,15],r:[-16,1,16,-1],q:[-17,-16,-15,1,17,16,15,-1],k:[-17,-16,-15,1,17,16,15,-1]};var ac=[20,0,0,0,0,0,0,24,0,0,0,0,0,0,20,0,0,20,0,0,0,0,0,24,0,0,0,0,0,20,0,0,0,0,20,0,0,0,0,24,0,0,0,0,20,0,0,0,0,0,0,20,0,0,0,24,0,0,0,20,0,0,0,0,0,0,0,0,20,0,0,24,0,0,20,0,0,0,0,0,0,0,0,0,0,20,2,24,2,20,0,0,0,0,0,0,0,0,0,0,0,2,53,56,53,2,0,0,0,0,0,0,24,24,24,24,24,24,56,0,56,24,24,24,24,24,24,0,0,0,0,0,0,2,53,56,53,2,0,0,0,0,0,0,0,0,0,0,0,20,2,24,2,20,0,0,0,0,0,0,0,0,0,0,20,0,0,24,0,0,20,0,0,0,0,0,0,0,0,20,0,0,0,24,0,0,0,20,0,0,0,0,0,0,20,0,0,0,0,24,0,0,0,0,20,0,0,0,0,20,0,0,0,0,0,24,0,0,0,0,0,20,0,0,20,0,0,0,0,0,0,24,0,0,0,0,0,0,20];var o=[17,0,0,0,0,0,0,16,0,0,0,0,0,0,15,0,0,17,0,0,0,0,0,16,0,0,0,0,0,15,0,0,0,0,17,0,0,0,0,16,0,0,0,0,15,0,0,0,0,0,0,17,0,0,0,16,0,0,0,15,0,0,0,0,0,0,0,0,17,0,0,16,0,0,15,0,0,0,0,0,0,0,0,0,0,17,0,16,0,15,0,0,0,0,0,0,0,0,0,0,0,0,17,16,15,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0,0,0,-15,-16,-17,0,0,0,0,0,0,0,0,0,0,0,0,-15,0,-16,0,-17,0,0,0,0,0,0,0,0,0,0,-15,0,0,-16,0,0,-17,0,0,0,0,0,0,0,0,-15,0,0,0,-16,0,0,0,-17,0,0,0,0,0,0,-15,0,0,0,0,-16,0,0,0,0,-17,0,0,0,0,-15,0,0,0,0,0,-16,0,0,0,0,0,-17,0,0,-15,0,0,0,0,0,0,-16,0,0,0,0,0,0,-17];var av={p:0,n:1,b:2,r:3,q:4,k:5};var aj={NORMAL:"n",CAPTURE:"c",BIG_PAWN:"b",EP_CAPTURE:"e",PROMOTION:"p",KSIDE_CASTLE:"k",QSIDE_CASTLE:"q"};var D={NORMAL:1,CAPTURE:2,BIG_PAWN:4,EP_CAPTURE:8,PROMOTION:16,KSIDE_CASTLE:32,QSIDE_CASTLE:64};var W=7;var T=6;var Q=5;var P=4;var O=3;var N=2;var M=1;var K=0;var v={a8:0,b8:1,c8:2,d8:3,e8:4,f8:5,g8:6,h8:7,a7:16,b7:17,c7:18,d7:19,e7:20,f7:21,g7:22,h7:23,a6:32,b6:33,c6:34,d6:35,e6:36,f6:37,g6:38,h6:39,a5:48,b5:49,c5:50,d5:51,e5:52,f5:53,g5:54,h5:55,a4:64,b4:65,c4:66,d4:67,e4:68,f4:69,g4:70,h4:71,a3:80,b3:81,c3:82,d3:83,e3:84,f3:85,g3:86,h3:87,a2:96,b2:97,c2:98,d2:99,e2:100,f2:101,g2:102,h2:103,a1:112,b1:113,c1:114,d1:115,e1:116,f1:117,g1:118,h1:119};var V={w:[{square:v.a1,flag:D.QSIDE_CASTLE},{square:v.h1,flag:D.KSIDE_CASTLE}],b:[{square:v.a8,flag:D.QSIDE_CASTLE},{square:v.h8,flag:D.KSIDE_CASTLE}]};var C=new Array(128);var ak={w:E,b:E};var t=k;var d={w:0,b:0};var x=E;var n=0;var g=1;var Z=[];var ab={};if(typeof ao==="undefined"){h(an)}else{h(ao)}function ae(){C=new Array(128);ak={w:E,b:E};t=k;d={w:0,b:0};x=E;n=0;g=1;Z=[];ab={};q(z())}function Y(){h(an)}function h(ay){var aD=ay.split(/\s+/);var aw=aD[0];var aC=0;var aB=f+"12345678/";if(!aa(ay).valid){return false}ae();for(var az=0;az<aw.length;az++){var aA=aw.charAt(az);if(aA==="/"){aC+=8}else{if(r(aA)){aC+=parseInt(aA,10)}else{var ax=(aA<"a")?k:p;aq({type:aA.toLowerCase(),color:ax},m(aC));aC++}}}t=aD[1];if(aD[2].indexOf("K")>-1){d.w|=D.KSIDE_CASTLE}if(aD[2].indexOf("Q")>-1){d.w|=D.QSIDE_CASTLE}if(aD[2].indexOf("k")>-1){d.b|=D.KSIDE_CASTLE}if(aD[2].indexOf("q")>-1){d.b|=D.QSIDE_CASTLE}x=(aD[3]==="-")?E:v[aD[3]];n=parseInt(aD[4],10);g=parseInt(aD[5],10);q(z());return true}function aa(ay){var aD={0:"No errors.",1:"FEN string must contain six space-delimited fields.",2:"6th field (move number) must be a positive integer.",3:"5th field (half move counter) must be a non-negative integer.",4:"4th field (en-passant square) is invalid.",5:"3rd field (castling availability) is invalid.",6:"2nd field (side to move) is invalid.",7:"1st field (piece positions) does not contain 8 '/'-delimited rows.",8:"1st field (piece positions) is invalid [consecutive numbers].",9:"1st field (piece positions) is invalid [invalid piece].",10:"1st field (piece positions) is invalid [row too large]."};var aC=ay.split(/\s+/);if(aC.length!==6){return{valid:false,error_number:1,error:aD[1]}}if(isNaN(aC[5])||(parseInt(aC[5],10)<=0)){return{valid:false,error_number:2,error:aD[2]}}if(isNaN(aC[4])||(parseInt(aC[4],10)<0)){return{valid:false,error_number:3,error:aD[3]}}if(!/^(-|[abcdefgh][36])$/.test(aC[3])){return{valid:false,error_number:4,error:aD[4]}}if(!/^(KQ?k?q?|Qk?q?|kq?|q|-)$/.test(aC[2])){return{valid:false,error_number:5,error:aD[5]}}if(!/^(w|b)$/.test(aC[1])){return{valid:false,error_number:6,error:aD[6]}}var aB=aC[0].split("/");if(aB.length!==8){return{valid:false,error_number:7,error:aD[7]}}for(var az=0;az<aB.length;az++){var aw=0;var aA=false;for(var ax=0;ax<aB[az].length;ax++){if(!isNaN(aB[az][ax])){if(aA){return{valid:false,error_number:8,error:aD[8]}}aw+=parseInt(aB[az][ax],10);aA=true}else{if(!/^[prnbqkPRNBQK]$/.test(aB[az][ax])){return{valid:false,error_number:9,error:aD[9]}}aw+=1;aA=false}}if(aw!==8){return{valid:false,error_number:10,error:aD[10]}}}return{valid:true,error_number:0,error:aD[0]}}function z(){var aC=0;var ay="";for(var aA=v.a8;aA<=v.h1;aA++){if(C[aA]==null){aC++}else{if(aC>0){ay+=aC;aC=0}var ax=C[aA].color;var aB=C[aA].type;ay+=(ax===k)?aB.toUpperCase():aB.toLowerCase()}if((aA+1)&136){if(aC>0){ay+=aC}if(aA!==v.h1){ay+="/"}aC=0;aA+=8}}var az="";if(d[k]&D.KSIDE_CASTLE){az+="K"}if(d[k]&D.QSIDE_CASTLE){az+="Q"}if(d[p]&D.KSIDE_CASTLE){az+="k"}if(d[p]&D.QSIDE_CASTLE){az+="q"}az=az||"-";var aw=(x===E)?"-":m(x);return[ay,t,az,aw,n,g].join(" ")}function at(aw){for(var ax=0;ax<aw.length;ax+=2){if(typeof aw[ax]==="string"&&typeof aw[ax+1]==="string"){ab[aw[ax]]=aw[ax+1]}}return ab}function q(aw){if(Z.length>0){return}if(aw!==an){ab.SetUp="1";ab.FEN=aw}else{delete ab.SetUp;delete ab.FEN}}function ag(ax){var aw=C[v[ax]];return(aw)?{type:aw.type,color:aw.color}:null}function aq(aw,ay){if(!("type" in aw&&"color" in aw)){return false}if(f.indexOf(aw.type.toLowerCase())===-1){return false}if(!(ay in v)){return false}var ax=v[ay];if(aw.type==ad&&!(ak[aw.color]==E||ak[aw.color]==ax)){return false}C[ax]={type:aw.type,color:aw.color};if(aw.type===ad){ak[aw.color]=ax}q(z());return true}function F(ax){var aw=ag(ax);C[v[ax]]=null;if(aw&&aw.type===ad){ak[aw.color]=E}q(z());return aw}function am(ay,aB,aA,ax,az){var aw={color:t,from:aB,to:aA,flags:ax,piece:ay[aB].type};if(az){aw.flags|=D.PROMOTION;aw.promotion=az}if(ay[aA]){aw.captured=ay[aA].type}else{if(ax&D.EP_CAPTURE){aw.captured=X}}return aw}function b(ay){function aN(aT,aR,aW,aV,aQ){if(aT[aW].type===X&&(U(aV)===K||U(aV)===W)){var aU=[j,H,s,S];for(var aS=0,aP=aU.length;aS<aP;aS++){aR.push(am(aT,aW,aV,aQ,aU[aS]))}}else{aR.push(am(aT,aW,aV,aQ))}}var aO=[];var aA=t;var aK=au(aA);var aL={b:M,w:T};var aF=v.a8;var aC=v.h1;var aD=false;var aB=(typeof ay!=="undefined"&&"legal" in ay)?ay.legal:true;if(typeof ay!=="undefined"&&"square" in ay){if(ay.square in v){aF=aC=v[ay.square];aD=true}else{return[]}}for(var aH=aF;aH<=aC;aH++){if(aH&136){aH+=7;continue}var ax=C[aH];if(ax==null||ax.color!==aA){continue}if(ax.type===X){var aE=aH+u[aA][0];if(C[aE]==null){aN(C,aO,aH,aE,D.NORMAL);var aE=aH+u[aA][1];if(aL[aA]===U(aH)&&C[aE]==null){aN(C,aO,aH,aE,D.BIG_PAWN)}}for(aG=2;aG<4;aG++){var aE=aH+u[aA][aG];if(aE&136){continue}if(C[aE]!=null&&C[aE].color===aK){aN(C,aO,aH,aE,D.CAPTURE)}else{if(aE===x){aN(C,aO,aH,x,D.EP_CAPTURE)}}}}else{for(var aG=0,aI=J[ax.type].length;aG<aI;aG++){var az=J[ax.type][aG];var aE=aH;while(true){aE+=az;if(aE&136){break}if(C[aE]==null){aN(C,aO,aH,aE,D.NORMAL)}else{if(C[aE].color===aA){break}aN(C,aO,aH,aE,D.CAPTURE);break}if(ax.type==="n"||ax.type==="k"){break}}}}}if((!aD)||aC===ak[aA]){if(d[aA]&D.KSIDE_CASTLE){var aM=ak[aA];var aJ=aM+2;if(C[aM+1]==null&&C[aJ]==null&&!af(aK,ak[aA])&&!af(aK,aM+1)&&!af(aK,aJ)){aN(C,aO,ak[aA],aJ,D.KSIDE_CASTLE)}}if(d[aA]&D.QSIDE_CASTLE){var aM=ak[aA];var aJ=aM-2;if(C[aM-1]==null&&C[aM-2]==null&&C[aM-3]==null&&!af(aK,ak[aA])&&!af(aK,aM-1)&&!af(aK,aJ)){aN(C,aO,ak[aA],aJ,D.QSIDE_CASTLE)}}}if(!aB){return aO}var aw=[];for(var aH=0,aI=aO.length;aH<aI;aH++){al(aO[aH]);if(!L(aA)){aw.push(aO[aH])}G()}return aw}function ar(ax){var ay="";if(ax.flags&D.KSIDE_CASTLE){ay="O-O"}else{if(ax.flags&D.QSIDE_CASTLE){ay="O-O-O"}else{var aw=c(ax);if(ax.piece!==X){ay+=ax.piece.toUpperCase()+aw}if(ax.flags&(D.CAPTURE|D.EP_CAPTURE)){if(ax.piece===X){ay+=m(ax.from)[0]}ay+="x"}ay+=m(ax.to);if(ax.flags&D.PROMOTION){ay+="="+ax.promotion.toUpperCase()}}}al(ax);if(R()){if(I()){ay+="#"}else{ay+="+"}}G();return ay}function af(ax,aD){for(var aA=v.a8;aA<=v.h1;aA++){if(aA&136){aA+=7;continue}if(C[aA]==null||C[aA].color!==ax){continue}var aE=C[aA];var aw=aA-aD;var aC=aw+119;if(ac[aC]&(1<<av[aE.type])){if(aE.type===X){if(aw>0){if(aE.color===k){return true}}else{if(aE.color===p){return true}}continue}if(aE.type==="n"||aE.type==="k"){return true}var ay=o[aC];var az=aA+ay;var aB=false;while(az!==aD){if(C[az]!=null){aB=true;break}az+=ay}if(!aB){return true}}}return false}function L(aw){return af(au(aw),ak[aw])}function R(){return L(t)}function I(){return R()&&b().length===0}function ah(){return !R()&&b().length===0}function A(){var aC={};var aB=[];var ax=0;var aD=0;for(var ay=v.a8;ay<=v.h1;ay++){aD=(aD+1)%2;if(ay&136){ay+=7;continue}var aA=C[ay];if(aA){aC[aA.type]=(aA.type in aC)?aC[aA.type]+1:1;if(aA.type===s){aB.push(aD)}ax++}}if(ax===2){return true}else{if(ax===3&&(aC[s]===1||aC[S]===1)){return true}else{if(ax===aC[s]+2){var az=0;var aw=aB.length;for(var ay=0;ay<aw;ay++){az+=aB[ay]}if(az===0||az===aw){return true}}}}return false}function i(){var ay=[];var ax={};var aA=false;while(true){var aw=G();if(!aw){break}ay.push(aw)}while(true){var az=z().split(" ").slice(0,4).join(" ");ax[az]=(az in ax)?ax[az]+1:1;if(ax[az]>=3){aA=true}if(!ay.length){break}al(ay.pop())}return aA}function e(aw){Z.push({move:aw,kings:{b:ak.b,w:ak.w},turn:t,castling:{b:d.b,w:d.w},ep_square:x,half_moves:n,move_number:g})}function al(ax){var aB=t;var aC=au(aB);e(ax);C[ax.to]=C[ax.from];C[ax.from]=null;if(ax.flags&D.EP_CAPTURE){if(t===p){C[ax.to-16]=null}else{C[ax.to+16]=null}}if(ax.flags&D.PROMOTION){C[ax.to]={type:ax.promotion,color:aB}}if(C[ax.to].type===ad){ak[C[ax.to].color]=ax.to;if(ax.flags&D.KSIDE_CASTLE){var az=ax.to-1;var aA=ax.to+1;C[az]=C[aA];C[aA]=null}else{if(ax.flags&D.QSIDE_CASTLE){var az=ax.to+1;var aA=ax.to-2;C[az]=C[aA];C[aA]=null}}d[aB]=""}if(d[aB]){for(var ay=0,aw=V[aB].length;ay<aw;ay++){if(ax.from===V[aB][ay].square&&d[aB]&V[aB][ay].flag){d[aB]^=V[aB][ay].flag;break}}}if(d[aC]){for(var ay=0,aw=V[aC].length;ay<aw;ay++){if(ax.to===V[aC][ay].square&&d[aC]&V[aC][ay].flag){d[aC]^=V[aC][ay].flag;break}}}if(ax.flags&D.BIG_PAWN){if(t==="b"){x=ax.to-16}else{x=ax.to+16}}else{x=E}if(ax.piece===X){n=0}else{if(ax.flags&(D.CAPTURE|D.EP_CAPTURE)){n=0}else{n++}}if(t===p){g++}t=au(t)}function G(){var ax=Z.pop();if(ax==null){return null}var aw=ax.move;ak=ax.kings;t=ax.turn;d=ax.castling;x=ax.ep_square;n=ax.half_moves;g=ax.move_number;var aB=t;var aC=au(t);C[aw.from]=C[aw.to];C[aw.from].type=aw.piece;C[aw.to]=null;if(aw.flags&D.CAPTURE){C[aw.to]={type:aw.captured,color:aC}}else{if(aw.flags&D.EP_CAPTURE){var ay;if(aB===p){ay=aw.to-16}else{ay=aw.to+16}C[ay]={type:X,color:aC}}}if(aw.flags&(D.KSIDE_CASTLE|D.QSIDE_CASTLE)){var az,aA;if(aw.flags&D.KSIDE_CASTLE){az=aw.to+1;aA=aw.to-1}else{if(aw.flags&D.QSIDE_CASTLE){az=aw.to-2;aA=aw.to+1}}C[az]=C[aA];C[aA]=null}return aw}function c(ax){var aw=b();var aE=ax.from;var aF=ax.to;var aI=ax.piece;var aH=0;var aD=0;var aB=0;for(var az=0,aC=aw.length;az<aC;az++){var aA=aw[az].from;var ay=aw[az].to;var aG=aw[az].piece;if(aI===aG&&aE!==aA&&aF===ay){aH++;if(U(aE)===U(aA)){aD++}if(y(aE)===y(aA)){aB++}}}if(aH>0){if(aD>0&&aB>0){return m(aE)}else{if(aB>0){return m(aE).charAt(1)}else{return m(aE).charAt(0)}}}return""}function a(){var az=" +------------------------+\n";for(var ax=v.a8;ax<=v.h1;ax++){if(y(ax)===0){az+=" 87654321"[U(ax)]+" |"}if(C[ax]==null){az+=" . "}else{var ay=C[ax].type;var aw=C[ax].color;var aA=(aw===k)?ay.toUpperCase():ay.toLowerCase();az+=" "+aA+" "}if((ax+1)&136){az+="|\n";ax+=8}}az+=" +------------------------+\n";az+=" a b c d e f g h\n";return az}function U(aw){return aw>>4}function y(aw){return aw&15}function m(aw){var ay=y(aw),ax=U(aw);return"abcdefgh".substring(ay,ay+1)+"87654321".substring(ax,ax+1)}function au(aw){return aw===k?p:k}function r(aw){return"0123456789".indexOf(aw)!==-1}function l(az){var ay=w(az);ay.san=ar(ay);ay.to=m(ay.to);ay.from=m(ay.from);var ax="";for(var aw in D){if(D[aw]&ay.flags){ax+=aj[aw]}}ay.flags=ax;return ay}function w(ay){var aw=(ay instanceof Array)?[]:{};for(var ax in ay){if(typeof ax==="object"){aw[ax]=w(ay[ax])}else{aw[ax]=ay[ax]}}return aw}function ap(aw){return aw.replace(/^\s+|\s+$/g,"")}function ai(aC){var ax=b({legal:false});var az=0;var ay=t;for(var aA=0,aw=ax.length;aA<aw;aA++){al(ax[aA]);if(!L(ay)){if(aC-1>0){var aB=ai(aC-1);az+=aB}else{az++}}G()}return az}return{WHITE:k,BLACK:p,PAWN:X,KNIGHT:S,BISHOP:s,ROOK:H,QUEEN:j,KING:ad,SQUARES:(function(){var ax=[];for(var aw=v.a8;aw<=v.h1;aw++){if(aw&136){aw+=7;continue}ax.push(m(aw))}return ax})(),FLAGS:aj,load:function(aw){return h(aw)},reset:function(){return Y()},moves:function(az){var ay=b(az);var ax=[];for(var aA=0,aw=ay.length;aA<aw;aA++){if(typeof az!=="undefined"&&"verbose" in az&&az.verbose){ax.push(l(ay[aA]))}else{ax.push(ar(ay[aA]))}}return ax},in_check:function(){return R()},in_checkmate:function(){return I()},in_stalemate:function(){return ah()},in_draw:function(){return n>=100||ah()||A()||i()},insufficient_material:function(){return A()},in_threefold_repetition:function(){return i()},game_over:function(){return n>=100||I()||ah()||A()||i()},validate_fen:function(aw){return aa(aw)},fen:function(){return z()},pgn:function(aG){var az=(typeof aG==="object"&&typeof aG.newline_char==="string")?aG.newline_char:"\n";var aF=(typeof aG==="object"&&typeof aG.max_width==="number")?aG.max_width:0;var aH=[];var aD=false;for(var aB in ab){aH.push("["+aB+' "'+ab[aB]+'"]'+az);aD=true}if(aD&&Z.length){aH.push(az)}var aE=[];while(Z.length>0){aE.push(G())}var ax=[];var ay="";var aw=1;while(aE.length>0){var aA=aE.pop();if(aw===1&&aA.color==="b"){ay="1. ...";aw++}else{if(aA.color==="w"){if(ay.length){ax.push(ay)}ay=aw+".";aw++}}ay=ay+" "+ar(aA);al(aA)}if(ay.length){ax.push(ay)}if(typeof ab.Result!=="undefined"){ax.push(ab.Result)}if(aF===0){return aH.join("")+ax.join(" ")}var aC=0;for(var aB=0;aB<ax.length;aB++){if(aC+ax[aB].length>aF&&aB!==0){if(aH[aH.length-1]===" "){aH.pop()}aH.push(az);aC=0}else{if(aB!==0){aH.push(" ");aC++}}aH.push(ax[aB]);aC+=ax[aB].length}return aH.join("")},load_pgn:function(aG,aK){function aL(aM){return aM.replace(/\\/g,"\\")}function az(aO){var aN=b();for(var aP=0,aM=aN.length;aP<aM;aP++){if(aO.replace(/[+#?!=]+$/,"")==ar(aN[aP]).replace(/[+#?!=]+$/,"")){return aN[aP]}}return null}function aE(aM){return az(ap(aM))}function aw(aM){var aO=false;for(var aN in aM){aO=true}return aO}function aI(aT,aM){var aR=(typeof aM==="object"&&typeof aM.newline_char==="string")?aM.newline_char:"\r?\n";var aQ={};var aS=aT.split(new RegExp(aL(aR)));var aO="";var aP="";for(var aN=0;aN<aS.length;aN++){aO=aS[aN].replace(/^\[([A-Z][A-Za-z]*)\s.*\]$/,"$1");aP=aS[aN].replace(/^\[[A-Za-z]+\s"(.*)"\]$/,"$1");if(ap(aO).length>0){aQ[aO]=aP}}return aQ}var aB=(typeof aK==="object"&&typeof aK.newline_char==="string")?aK.newline_char:"\r?\n";var aH=new RegExp("^(\\[(.|"+aL(aB)+")*\\])("+aL(aB)+")*1.("+aL(aB)+"|.)*$","g");var aD=aG.replace(aH,"$1");if(aD[0]!=="["){aD=""}Y();var aA=aI(aD,aK);for(var aJ in aA){at([aJ,aA[aJ]])}var ay=aG.replace(aD,"").replace(new RegExp(aL(aB),"g")," ");ay=ay.replace(/(\{[^}]+\})+?/g,"");ay=ay.replace(/\d+\./g,"");var ax=ap(ay).split(new RegExp(/\s+/));ax=ax.join(",").replace(/,,+/g,",").split(",");var aC="";for(var aF=0;aF<ax.length-1;aF++){aC=aE(ax[aF]);if(aC==null){return false}else{al(aC)}}aC=ax[ax.length-1];if(B.indexOf(aC)>-1){if(aw(ab)&&typeof ab.Result==="undefined"){at(["Result",aC])}}else{aC=aE(aC);if(aC==null){return false}else{al(aC)}}return true},header:function(){return at(arguments)},ascii:function(){return a()},turn:function(){return t},move:function(aA){var az=null;var ay=b();if(typeof aA==="string"){for(var aB=0,ax=ay.length;aB<ax;aB++){if(aA===ar(ay[aB])){az=ay[aB];break}}}else{if(typeof aA==="object"){for(var aB=0,ax=ay.length;aB<ax;aB++){if(aA.from===m(ay[aB].from)&&aA.to===m(ay[aB].to)&&(!("promotion" in ay[aB])||aA.promotion===ay[aB].promotion)){az=ay[aB];break}}}}if(!az){return null}var aw=l(az);al(az);return aw},undo:function(){var aw=G();return(aw)?l(aw):null},clear:function(){return ae()},put:function(aw,ax){return aq(aw,ax)},get:function(aw){return ag(aw)},remove:function(aw){return F(aw)},perft:function(aw){return ai(aw)},square_color:function(ax){if(ax in v){var aw=v[ax];return((U(aw)+y(aw))%2===0)?"light":"dark"}return null},history:function(ay){var aA=[];var az=[];var ax=(typeof ay!=="undefined"&&"verbose" in ay&&ay.verbose);while(Z.length>0){aA.push(G())}while(aA.length>0){var aw=aA.pop();if(ax){az.push(l(aw))}else{az.push(ar(aw))}al(aw)}return az}}};if(typeof exports!=="undefined"){exports.Chess=Chess}if(typeof define!=="undefined"){define(function(){return Chess})};
</script>
</head>
<body>
<div ng-app="myapp" ng-controller='ChessBoardController'>
<table></tr>
<td><table>
<tr ng-repeat="rank in model.board">
<td ng-class="styles.square($index, 'A')" ng-click="actions.move($index, 'a')"><span ng-bind-html="rank.A"></span></td>
<td ng-class="styles.square($index, 'B')" ng-click="actions.move($index, 'b')"><span ng-bind-html="rank.B"></span></td>
<td ng-class="styles.square($index, 'C')" ng-click="actions.move($index, 'c')"><span ng-bind-html="rank.C"></span></td>
<td ng-class="styles.square($index, 'D')" ng-click="actions.move($index, 'd')"><span ng-bind-html="rank.D"></span></td>
<td ng-class="styles.square($index, 'E')" ng-click="actions.move($index, 'e')"><span ng-bind-html="rank.E"></span></td>
<td ng-class="styles.square($index, 'F')" ng-click="actions.move($index, 'f')"><span ng-bind-html="rank.F"></span></td>
<td ng-class="styles.square($index, 'G')" ng-click="actions.move($index, 'g')"><span ng-bind-html="rank.G"></span></td>
<td ng-class="styles.square($index, 'H')" ng-click="actions.move($index, 'h')"><span ng-bind-html="rank.H"></span></td>
</td>
</tr>
</table></td>
<td valign="top">
<div style="height: 468px; overflow:scroll;">
<table>
<tr ng-repeat="move in model.score">
<td>{{$index + 1}}.</td>
<td>{{move.wh}}</td>
<td>{{move.bl}}</td>
</tr>
</table>
</div>
<div>
<input type="button" value="<<" ng-click="actions.undoAll()">
<input type="button" value="<" ng-click="actions.undoLast()">
</div>
</td>
</tr></table>
</div>
<script>
angular.module("myapp", [])
.controller("ChessBoardController", ['$scope', '$sce', function($scope, $sce) {
var chess = new Chess();
$scope.model = (function() {
return {
board: fenToBoard(chess.fen()),
score: []
}
})();
$scope.styles = (function() {
return {
square: function(index, file) {
if ((index + (file.charCodeAt() % 2)) % 2) {
return 'lightSquare';
}
else {
return 'darkSquare';
}
}
}
})();
$scope.actions = (function() {
return {
move: (function() {
var moveFrom;
return function(index, file) {
var square = file + (8-index);
var move;
if (moveFrom) {
move = chess.move({
from: moveFrom,
to: square
});
if (move) {
updateBoardAndScore();
respond();
}
moveFrom = null;
}
else {
moveFrom = square;
}
}
})(),
undoAll: function() {
chess.reset();
updateBoardAndScore()
},
undoLast: function() {
chess.undo();
updateBoardAndScore()
}
}
})();
function updateBoardAndScore() {
$scope.model.board = fenToBoard(chess.fen());
$scope.model.score = historyToScore(chess.history());
}
function respond() {
var move = mateNextMove(chess.fen());
if (!move) {
move = makeMove(chess.moves());
}
chess.move(move);
updateBoardAndScore();
}
function mateNextMove(fen) {
var moves = chess.moves();
var chessInstance = new Chess();
chessInstance.load(fen);
for (var i=0, n=moves.length; i<n; i++) {
chessInstance.move(moves[i]);
if (chessInstance.in_checkmate()) {
return moves[i];
}
chessInstance.undo();
}
}
function makeMove(candidates) {
return makeRandomMove(candidates);
}
function makeRandomMove(candidates) {
return candidates[Math.floor(Math.random() * candidates.length)]
}
function fenToBoard(fen) {
var fenRanks = fen.split(/\s+/)[0].split('/').reverse();
var board = {};
var rankRepr;
for (var i=0, n=fenRanks.length; i<n; i++) {
rankRepr = fenRanks[i].replace(/\d/g, function(d) {
return " ".substr(0, d);
});
board[-(i-8)] = rankSquares(rankRepr);
}
return board;
function rankSquares(rankRepr) {
var rankSquares = {}, square;
var rankHtmlEntities = {
K: '&#9812;',
Q: '&#9813;',
R: '&#9814;',
B: '&#9815;',
N: '&#9816;',
P: '&#9817;',
' ': '&nbsp;',
k: '&#9818;',
q: '&#9819;',
r: '&#9820;',
b: '&#9821;',
n: '&#9822;',
p: '&#9823;'
};
for (var i=0; i<=7; i++) {
square = $sce.trustAsHtml(rankHtmlEntities[rankRepr[i]]);
rankSquares[String.fromCharCode(i + 65)] = square;
}
return rankSquares;
}
}
function historyToScore(history) {
var score = [];
var move;
var black;
for (var i=0, n=Math.ceil(history.length/2); i<n; i++) {
move = {
wh: history[i*2]
};
black = history[i*2+1];
if (black) {
move.bl = black;
}
score.push(move);
}
return score;
}
}]);
</script>
</body>
</html>
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