Jogo de Xadrez Gratuito | DYNSEO<\/title> <\/p>\n<style> * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: 'Segoe UI', sans-serif; background: #f8f9fa; color: #333; } .container { max-width: 500px; margin: 0 auto; padding: 15px; }  .header { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 20px 15px; text-align: center; border-radius: 0 0 20px 20px; margin-bottom: 15px; } .header h1 { font-size: 1.4rem; }  .game-box { background: white; border-radius: 15px; padding: 15px; box-shadow: 0 5px 20px rgba(0,0,0,0.08); }  .players { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 12px; } .player { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: #f0f0f0; border-radius: 10px; flex: 1; font-size: 0.8rem; } .player.active { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; }  .levels { display: flex; gap: 4px; justify-content: center; margin-bottom: 12px; flex-wrap: wrap; } .lvl { padding: 5px 8px; border: 2px solid #ddd; background: white; border-radius: 12px; font-size: 0.65rem; cursor: pointer; transition: all 0.2s; } .lvl:hover { border-color: #667eea; } .lvl.active { border-color: #667eea; background: #667eea; color: white; }  .msg { text-align: center; padding: 8px; background: #f8f9fa; border-radius: 8px; font-size: 0.85rem; margin-bottom: 12px; }  .board-wrap { display: flex; justify-content: center; margin-bottom: 12px; } .board { display: grid; grid-template-columns: repeat(8, 1fr); width: 100%; max-width: 340px; border: 3px solid #333; border-radius: 4px; } .sq { aspect-ratio: 1; display: flex; align-items: center; justify-content: center; cursor: pointer; position: relative; } .sq.l { background: #f0d9b5; } .sq.d { background: #b58863; } .sq.sel { background: #7fc97f !important; } .sq.last { background: #cdd26a !important; } .sq.dot::after { content: ''; position: absolute; width: 26%; height: 26%; background: rgba(0,0,0,0.2); border-radius: 50%; } .sq.cap { box-shadow: inset 0 0 0 3px rgba(0,0,0,0.3); } .sq.chk { background: #e74c3c !important; } .pc { font-size: clamp(1.6rem, 8vw, 2.5rem); user-select: none; }  .btns { display: flex; gap: 8px; justify-content: center; } .btn { padding: 10px 16px; border: none; border-radius: 10px; font-size: 0.8rem; font-weight: 600; cursor: pointer; } .btn.pr { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; } .btn.sc { background: #f0f0f0; }  .modal-bg { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); display: none; align-items: center; justify-content: center; z-index: 100; } .modal-bg.show { display: flex; } .modal { background: white; padding: 25px; border-radius: 20px; text-align: center; max-width: 300px; } .modal h2 { color: #667eea; margin-bottom: 10px; } .promo-row { display: flex; justify-content: center; gap: 10px; margin-top: 15px; } .promo-pc { font-size: 2.2rem; cursor: pointer; padding: 8px; border-radius: 8px; background: #f0f0f0; } .promo-pc:hover { background: #667eea; }  .cta-banner { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); border-radius: 15px; padding: 15px; color: white; text-align: center; margin-bottom: 15px; } .cta-banner h3 { font-size: 0.95rem; margin-bottom: 6px; } .cta-banner p { font-size: 0.75rem; opacity: 0.9; margin-bottom: 8px; } .apps-row { display: flex; justify-content: center; gap: 6px; } .app-badge { background: white; color: #667eea; padding: 5px 10px; border-radius: 12px; font-weight: 600; text-decoration: none; font-size: 0.7rem; }  .seo-content { background: white; border-radius: 15px; padding: 15px; box-shadow: 0 5px 20px rgba(0,0,0,0.08); margin-top: 15px; } .seo-content h2 { color: #667eea; font-size: 1rem; margin-bottom: 8px; } .seo-content p { font-size: 0.8rem; color: #555; line-height: 1.5; } <\/style>\n<p><\/head><body> <\/p>\n<div class=\"header\">\n<h1>\u265f\ufe0f Jogo de Xadrez Gratuito<\/h1>\n<\/div>\n<p> <\/p>\n<div class=\"container\"> <\/p>\n<div class=\"cta-banner\"> <\/p>\n<h3>\ud83e\udde0 Treine o seu c\u00e9rebro!<\/h3>\n<p> <pee>30+ jogos cognitivos nas nossas apps<\/pee> <\/p>\n<div class=\"apps-row\"> <a href=\"https:\/\/www.dynseo.com\/pt-pt\/coco-pensa-e-coco-se-mexe\/\" class=\"app-badge\">\ud83d\udc76 COCO<\/a> <a href=\"https:\/\/www.dynseo.com\/pt-pt\/o-programa-dos-treinadores\/fernando-o-seu-treinador-de-cerebro\/\" class=\"app-badge\">\ud83e\uddd1 JOE<\/a> <a href=\"https:\/\/www.dynseo.com\/pt-pt\/dynseo-3\/carmen\/\" class=\"app-badge\">\ud83d\udc74 EDITH<\/a> <\/div>\n<p> <\/div>\n<p>  <\/p>\n<div class=\"game-box\"> <\/p>\n<div class=\"players\"> <\/p>\n<div class=\"player\" id=\"pb\">\ud83e\udd16 Computador<\/div>\n<p> <\/p>\n<div class=\"player active\" id=\"pw\">\ud83d\udc64 Voc\u00ea<\/div>\n<p> <\/div>\n<p> <\/p>\n<div class=\"levels\"> <button class=\"lvl\" data-d=\"1\">\ud83d\udfe2 F\u00e1cil<\/button> <button class=\"lvl active\" data-d=\"2\">\ud83d\udfe1 Normal<\/button> <button class=\"lvl\" data-d=\"3\">\ud83d\udfe0 Dif\u00edcil<\/button> <button class=\"lvl\" data-d=\"4\">\ud83d\udd34 Especialista<\/button> <button class=\"lvl\" data-d=\"5\">\ud83d\udc51 Campe\u00e3o<\/button> <\/div>\n<p> <\/p>\n<div class=\"msg\" id=\"msg\">A sua vez de jogar!<\/div>\n<p> <\/p>\n<div class=\"board-wrap\">\n<div class=\"board\" id=\"brd\"><\/div>\n<\/div>\n<p> <\/p>\n<div class=\"btns\"> <button class=\"btn pr\" id=\"newg\">\ud83d\udd04 Nova partida<\/button> <button class=\"btn sc\" id=\"flip\">\ud83d\udd03 Inverter<\/button> <\/div>\n<p> <\/div>\n<p>  <\/p>\n<div class=\"seo-content\"> <\/p>\n<h2>Jogue xadrez gratuitamente<\/h2>\n<p> <pee>O xadrez estimula o pensamento estrat\u00e9gico e a concentra\u00e7\u00e3o. 5 n\u00edveis de dificuldade para evoluir ao seu ritmo!<\/pee> <\/div>\n<p> <\/div>\n<p>  <\/p>\n<div class=\"modal-bg\" id=\"pm\">\n<div class=\"modal\">\n<h2>Promo\u00e7\u00e3o<\/h2>\n<div class=\"promo-row\" id=\"ppc\"><\/div>\n<\/div>\n<\/div>\n<p> <\/p>\n<div class=\"modal-bg\" id=\"em\">\n<div class=\"modal\">\n<h2 id=\"et\"><\/h2>\n<pee id=\"ex\"><\/pee><button class=\"btn pr\" id=\"rstb\" style=\"margin-top:15px\">\ud83d\udd04 Jogar de novo<\/button><\/div>\n<\/div>\n<p>  <script> (function(){ var P={wK:'\u2654',wQ:'\u2655',wR:'\u2656',wB:'\u2657',wN:'\u2658',wP:'\u2659',bK:'\u265a',bQ:'\u265b',bR:'\u265c',bB:'\u265d',bN:'\u265e',bP:'\u265f'}; var V={P:100,N:320,B:330,R:500,Q:900,K:20000}; \/\/ Tabelas de posi\u00e7\u00e3o para avalia\u00e7\u00e3o avan\u00e7ada (piece-square tables) var PST={ P:[0,0,0,0,0,0,0,0,50,50,50,50,50,50,50,50,10,10,20,30,30,20,10,10,5,5,10,25,25,10,5,5,0,0,0,20,20,0,0,0,5,-5,-10,0,0,-10,-5,5,5,10,10,-20,-20,10,10,5,0,0,0,0,0,0,0,0], N:[-50,-40,-30,-30,-30,-30,-40,-50,-40,-20,0,0,0,0,-20,-40,-30,0,10,15,15,10,0,-30,-30,5,15,20,20,15,5,-30,-30,0,15,20,20,15,0,-30,-30,5,10,15,15,10,5,-30,-40,-20,0,5,5,0,-20,-40,-50,-40,-30,-30,-30,-30,-40,-50], B:[-20,-10,-10,-10,-10,-10,-10,-20,-10,0,0,0,0,0,0,-10,-10,0,5,10,10,5,0,-10,-10,5,5,10,10,5,5,-10,-10,0,10,10,10,10,0,-10,-10,10,10,10,10,10,10,-10,-10,5,0,0,0,0,5,-10,-20,-10,-10,-10,-10,-10,-10,-20], R:[0,0,0,0,0,0,0,0,5,10,10,10,10,10,10,5,-5,0,0,0,0,0,0,-5,-5,0,0,0,0,0,0,-5,-5,0,0,0,0,0,0,-5,-5,0,0,0,0,0,0,-5,-5,0,0,0,0,0,0,-5,0,0,0,5,5,0,0,0], Q:[-20,-10,-10,-5,-5,-10,-10,-20,-10,0,0,0,0,0,0,-10,-10,0,5,5,5,5,0,-10,-5,0,5,5,5,5,0,-5,0,0,5,5,5,5,0,-5,-10,5,5,5,5,5,0,-10,-10,0,5,0,0,0,0,-10,-20,-10,-10,-5,-5,-10,-10,-20], K:[-30,-40,-40,-50,-50,-40,-40,-30,-30,-40,-40,-50,-50,-40,-40,-30,-30,-40,-40,-50,-50,-40,-40,-30,-30,-40,-40,-50,-50,-40,-40,-30,-20,-30,-30,-40,-40,-30,-30,-20,-10,-20,-20,-20,-20,-20,-20,-10,20,20,0,0,0,0,20,20,20,30,10,0,0,10,30,20] }; var b,sel,trn,over,flip,dep,last,cast,ep,ppromo;  function init(){ document.querySelectorAll('.lvl').forEach(function(x){ x.onclick=function(){ document.querySelectorAll('.lvl').forEach(function(y){y.classList.remove('active');}); this.classList.add('active'); dep=+this.dataset.d; newG(); }; }); document.getElementById('newg').onclick=newG; document.getElementById('flip').onclick=function(){flip=!flip;draw();}; document.getElementById('rstb').onclick=function(){document.getElementById('em').classList.remove('show');newG();}; document.getElementById('brd').onclick=function(e){var s=e.target.closest('.sq');if(s)click(+s.dataset.r,+s.dataset.c);}; dep=2;newG(); }  function newG(){ b=[['bR','bN','bB','bQ','bK','bB','bN','bR'],['bP','bP','bP','bP','bP','bP','bP','bP'],['','','','','','','',''],['','','','','','','',''],['','','','','','','',''],['','','','','','','',''],['wP','wP','wP','wP','wP','wP','wP','wP'],['wR','wN','wB','wQ','wK','wB','wN','wR']]; sel=null;trn='w';over=false;last=null;cast={wK:1,wQ:1,bK:1,bQ:1};ep=null; document.getElementById('msg').textContent='A sua vez de jogar!'; document.getElementById('pw').classList.add('active'); document.getElementById('pb').classList.remove('active'); draw(); }  function draw(){ var el=document.getElementById('brd');el.innerHTML=''; for(var ri=0;ri<8;ri++)for(var ci=0;ci<8;ci++){ var r=flip?7-ri:ri,c=flip?7-ci:ci; var sq=document.createElement('div'); sq.className='sq '+((r+c)%2?'d':'l'); sq.dataset.r=r;sq.dataset.c=c; if(b[r][c]){var s=document.createElement('span');s.className='pc';s.textContent=P[b[r][c]];sq.appendChild(s);} if(sel&&sel.r===r&&sel.c===c)sq.classList.add('sel'); if(last&&((last.fr===r&&last.fc===c)||(last.tr===r&&last.tc===c)))sq.classList.add('last'); if(b[r][c]&&b[r][c][1]==='K'&&chk(b[r][c][0]))sq.classList.add('chk'); if(sel){var mv=legal(sel.r,sel.c);for(var i=0;i<mv.length;i++)if(mv[i].r===r&&mv[i].c===c)sq.classList.add(b[r][c]?'cap':'dot');} el.appendChild(sq); } }  function click(r,c){ if(over||trn==='b')return; if(sel){var mv=legal(sel.r,sel.c);for(var i=0;i<mv.length;i++)if(mv[i].r===r&&mv[i].c===c){doMv(sel.r,sel.c,r,c);sel=null;draw();return;}} if(b[r][c]&&b[r][c][0]==='w')sel={r:r,c:c};else sel=null; draw(); }  function doMv(fr,fc,tr,tc,pro){ var pc=b[fr][fc]; if(pc[1]==='P'&&tc!==fc&&!b[tr][tc])b[pc[0]==='w'?tr+1:tr-1][tc]=''; if(pc[1]==='K'&&Math.abs(tc-fc)===2){if(tc>fc){b[fr][5]=b[fr][7];b[fr][7]='';}else{b[fr][3]=b[fr][0];b[fr][0]='';}} if(pc[1]==='K'){cast[pc[0]+'K']=0;cast[pc[0]+'Q']=0;} if(pc[1]==='R'){if(fr===7&&fc===0)cast.wQ=0;if(fr===7&&fc===7)cast.wK=0;if(fr===0&&fc===0)cast.bQ=0;if(fr===0&&fc===7)cast.bK=0;} ep=(pc[1]==='P'&&Math.abs(tr-fr)===2)?{r:(fr+tr)\/2,c:tc}:null; b[tr][tc]=pc;b[fr][fc]=''; if(pc[1]==='P'&&(tr===0||tr===7)){if(pro)b[tr][tc]=pc[0]+pro;else if(trn==='w'){ppromo={r:tr,c:tc,col:pc[0]};showPro(pc[0]);return;}else b[tr][tc]=pc[0]+'Q';} finMv(fr,fc,tr,tc); }  function finMv(fr,fc,tr,tc){ last={fr:fr,fc:fc,tr:tr,tc:tc};trn=trn==='w'?'b':'w'; document.getElementById('pw').classList.toggle('active',trn==='w'); document.getElementById('pb').classList.toggle('active',trn==='b'); if(mate(trn)){over=true;document.getElementById('et').textContent=trn==='w'?'Derrota':'Vit\u00f3ria!';document.getElementById('ex').textContent='Xeque-mate';document.getElementById('em').classList.add('show');return;} if(stale(trn)){over=true;document.getElementById('et').textContent='Afogamento';document.getElementById('ex').textContent='Empate';document.getElementById('em').classList.add('show');return;} draw(); if(trn==='b'){document.getElementById('msg').textContent='O computador est\u00e1 a pensar...';setTimeout(ai,100);} else document.getElementById('msg').textContent=chk('w')?'\u26a0\ufe0f Xeque!':'A sua vez!'; }  function showPro(col){ var pcs=col==='w'?['\u2655','\u2656','\u2657','\u2658']:['\u265b','\u265c','\u265d','\u265e'],ts=['Q','R','B','N']; var ct=document.getElementById('ppc');ct.innerHTML=''; for(var i=0;i<4;i++){var x=document.createElement('span');x.className='promo-pc';x.textContent=pcs[i];x.dataset.t=ts[i];x.onclick=function(){b[ppromo.r][ppromo.c]=ppromo.col+this.dataset.t;document.getElementById('pm').classList.remove('show');finMv(0,0,ppromo.r,ppromo.c);};ct.appendChild(x);} document.getElementById('pm').classList.add('show'); }  function legal(r,c){var pc=b[r][c];if(!pc)return[];var mv=pseudo(r,c),ok=[];for(var i=0;i<mv.length;i++)if(!wouldChk(r,c,mv[i].r,mv[i].c,pc[0]))ok.push(mv[i]);return ok;}  function pseudo(r,c){ var pc=b[r][c];if(!pc)return[];var t=pc[1],col=pc[0],m=[]; if(t==='P'){var d=col==='w'?-1:1,st=col==='w'?6:1;if(b[r+d]&&!b[r+d][c]){m.push({r:r+d,c:c});if(r===st&&!b[r+2*d][c])m.push({r:r+2*d,c:c});}for(var dc=-1;dc<=1;dc+=2){var nc=c+dc,nr=r+d;if(nc>=0&&nc<8&&nr>=0&&nr<8){if(b[nr][nc]&&b[nr][nc][0]!==col)m.push({r:nr,c:nc});if(ep&&ep.r===nr&&ep.c===nc)m.push({r:nr,c:nc});}}} else if(t==='N'){[[-2,-1],[-2,1],[-1,-2],[-1,2],[1,-2],[1,2],[2,-1],[2,1]].forEach(function(k){var nr=r+k[0],nc=c+k[1];if(nr>=0&&nr<8&&nc>=0&&nc<8&&(!b[nr][nc]||b[nr][nc][0]!==col))m.push({r:nr,c:nc});});} else if(t==='B')m=sld(r,c,col,[[-1,-1],[-1,1],[1,-1],[1,1]]); else if(t==='R')m=sld(r,c,col,[[-1,0],[1,0],[0,-1],[0,1]]); else if(t==='Q')m=sld(r,c,col,[[-1,-1],[-1,1],[1,-1],[1,1],[-1,0],[1,0],[0,-1],[0,1]]); else if(t==='K'){for(var dr=-1;dr<=1;dr++)for(var dc=-1;dc<=1;dc++){if(!dr&&!dc)continue;var nr=r+dr,nc=c+dc;if(nr>=0&&nr<8&&nc>=0&&nc<8&&(!b[nr][nc]||b[nr][nc][0]!==col))m.push({r:nr,c:nc});}var rw=col==='w'?7:0;if(r===rw&&c===4){if(cast[col+'K']&&!b[rw][5]&&!b[rw][6]&&b[rw][7]===(col+'R')&&!chk(col)&&!att(rw,5,col==='w'?'b':'w')&&!att(rw,6,col==='w'?'b':'w'))m.push({r:rw,c:6});if(cast[col+'Q']&&!b[rw][1]&&!b[rw][2]&&!b[rw][3]&&b[rw][0]===(col+'R')&&!chk(col)&&!att(rw,2,col==='w'?'b':'w')&&!att(rw,3,col==='w'?'b':'w'))m.push({r:rw,c:2});}} return m; }  function sld(r,c,col,dirs){var m=[];dirs.forEach(function(d){var nr=r+d[0],nc=c+d[1];while(nr>=0&&nr<8&&nc>=0&&nc<8){if(!b[nr][nc])m.push({r:nr,c:nc});else{if(b[nr][nc][0]!==col)m.push({r:nr,c:nc});break;}nr+=d[0];nc+=d[1];}});return m;} function fK(col){for(var r=0;r<8;r++)for(var c=0;c<8;c++)if(b[r][c]===col+'K')return{r:r,c:c};return null;} function att(r,c,by){for(var rr=0;rr<8;rr++)for(var cc=0;cc<8;cc++)if(b[rr][cc]&&b[rr][cc][0]===by){var mv=pseudo(rr,cc);for(var i=0;i<mv.length;i++)if(mv[i].r===r&&mv[i].c===c)return true;}return false;} function chk(col){var k=fK(col);return k?att(k.r,k.c,col==='w'?'b':'w'):false;} function wouldChk(fr,fc,tr,tc,col){var a=b[fr][fc],x=b[tr][tc];b[tr][tc]=a;b[fr][fc]='';var c=chk(col);b[fr][fc]=a;b[tr][tc]=x;return c;} function hasLeg(col){for(var r=0;r<8;r++)for(var c=0;c<8;c++)if(b[r][c]&&b[r][c][0]===col&&legal(r,c).length)return true;return false;} function mate(col){return chk(col)&&!hasLeg(col);} function stale(col){return !chk(col)&&!hasLeg(col);}  function ai(){ var mvs=getAllMoves('b'); if(!mvs.length)return; \/\/ Embaralhar para variedade mvs.sort(function(){return Math.random()-0.5;}); \/\/ Ordena\u00e7\u00e3o MVV-LVA para melhorar alpha-beta (capturas primeiro) mvs.sort(function(a,x){return (b[x.tr][x.tc]?V[b[x.tr][x.tc][1]]:0)-(b[a.tr][a.tc]?V[b[a.tr][a.tc][1]]:0);});  var best=null,bestV=-999999; for(var i=0;i<mvs.length;i++){ var m=mvs[i],a=b[m.fr][m.fc],x=b[m.tr][m.tc]; b[m.tr][m.tc]=a;b[m.fr][m.fc]=''; var v=-mini(dep-1,-999999,999999,true); b[m.fr][m.fc]=a;b[m.tr][m.tc]=x; if(v>bestV){bestV=v;best=m;} } if(best)doMv(best.fr,best.fc,best.tr,best.tc,'Q'); }  function getAllMoves(col){ var mvs=[]; for(var r=0;r<8;r++)for(var c=0;c<8;c++)if(b[r][c]&&b[r][c][0]===col){var mv=legal(r,c);for(var i=0;i<mv.length;i++)mvs.push({fr:r,fc:c,tr:mv[i].r,tc:mv[i].c});} return mvs; }  function mini(d,alpha,beta,isMax){ if(d===0)return evl(); var col=isMax?'w':'b',mvs=getAllMoves(col); if(!mvs.length)return chk(col)?(isMax?-90000:90000):0; \/\/ Ordena\u00e7\u00e3o para melhorar a poda alpha-beta mvs.sort(function(a,x){return (b[x.tr][x.tc]?V[b[x.tr][x.tc][1]]:0)-(b[a.tr][a.tc]?V[b[a.tr][a.tc][1]]:0);});  if(isMax){ var mx=-999999; for(var i=0;i<mvs.length;i++){ var m=mvs[i],a=b[m.fr][m.fc],x=b[m.tr][m.tc]; b[m.tr][m.tc]=a;b[m.fr][m.fc]=''; var v=mini(d-1,alpha,beta,false); b[m.fr][m.fc]=a;b[m.tr][m.tc]=x; if(v>mx)mx=v; if(v>alpha)alpha=v; if(beta<=alpha)break; } return mx; }else{ var mn=999999; for(var i=0;i<mvs.length;i++){ var m=mvs[i],a=b[m.fr][m.fc],x=b[m.tr][m.tc]; b[m.tr][m.tc]=a;b[m.fr][m.fc]=''; var v=mini(d-1,alpha,beta,true); b[m.fr][m.fc]=a;b[m.tr][m.tc]=x; if(v<mn)mn=v; if(v<beta)beta=v; if(beta<=alpha)break; } return mn; } }  function evl(){ var s=0; for(var r=0;r<8;r++)for(var c=0;c<8;c++){ var pc=b[r][c]; if(pc){ var t=pc[1],col=pc[0]; var v=V[t]||0; \/\/ B\u00f3nus de posi\u00e7\u00e3o (Piece-Square Tables) if(PST[t]){ var idx=col==='w'?r*8+c:(7-r)*8+c; v+=PST[t][idx]; } 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{"id":486984,"date":"2026-01-19T13:22:36","date_gmt":"2026-01-19T12:22:36","guid":{"rendered":"https:\/\/www.dynseo.com\/jogo-de-xadrez-online\/"},"modified":"2026-02-08T12:06:07","modified_gmt":"2026-02-08T11:06:07","slug":"jogo-de-xadrez-online","status":"publish","type":"page","link":"https:\/\/www.dynseo.com\/pt-pt\/jogo-de-xadrez-online\/","title":{"rendered":"Jogo de Xadrez Online"},"content":{"rendered":"

[et_pb_section fb_built=”1″ _builder_version=”4.27.5″ _module_preset=”default” custom_padding=”0px|||||” global_colors_info=”{}”][et_pb_row _builder_version=”4.27.5″ _module_preset=”default” width=”100%” max_width=”1426px” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.5″ _module_preset=”default” global_colors_info=”{}”][et_pb_code _builder_version=”4.27.5″ _module_preset=”default” hover_enabled=”0″ sticky_enabled=”0″] Jogo de Xadrez Gratuito | DYNSEO<\/title> <\/p>\n<style> * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: 'Segoe UI', sans-serif; background: #f8f9fa; color: #333; } .container { max-width: 500px; margin: 0 auto; padding: 15px; }  .header { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 20px 15px; text-align: center; border-radius: 0 0 20px 20px; margin-bottom: 15px; } .header h1 { font-size: 1.4rem; }  .game-box { background: white; border-radius: 15px; padding: 15px; box-shadow: 0 5px 20px rgba(0,0,0,0.08); }  .players { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 12px; } .player { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: #f0f0f0; border-radius: 10px; flex: 1; font-size: 0.8rem; } .player.active { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; }  .levels { display: flex; gap: 4px; justify-content: center; margin-bottom: 12px; flex-wrap: wrap; } .lvl { padding: 5px 8px; border: 2px solid #ddd; background: white; border-radius: 12px; font-size: 0.65rem; cursor: pointer; transition: all 0.2s; } .lvl:hover { border-color: #667eea; } .lvl.active { border-color: #667eea; background: #667eea; color: white; }  .msg { text-align: center; padding: 8px; background: #f8f9fa; border-radius: 8px; font-size: 0.85rem; margin-bottom: 12px; }  .board-wrap { display: flex; justify-content: center; margin-bottom: 12px; } .board { display: grid; grid-template-columns: repeat(8, 1fr); 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font-weight: 600; text-decoration: none; font-size: 0.7rem; }  .seo-content { background: white; border-radius: 15px; padding: 15px; box-shadow: 0 5px 20px rgba(0,0,0,0.08); margin-top: 15px; } .seo-content h2 { color: #667eea; font-size: 1rem; margin-bottom: 8px; } .seo-content p { font-size: 0.8rem; color: #555; line-height: 1.5; } <\/style>\n<p><\/head><body> <\/p>\n<div class=\"header\">\n<h1>\u265f\ufe0f Jogo de Xadrez Gratuito<\/h1>\n<\/div>\n<p> <\/p>\n<div class=\"container\"> <\/p>\n<div class=\"cta-banner\"> <\/p>\n<h3>\ud83e\udde0 Treine o seu c\u00e9rebro!<\/h3>\n<p> <pee>30+ jogos cognitivos nas nossas apps<\/pee> <\/p>\n<div class=\"apps-row\"> <a href=\"https:\/\/www.dynseo.com\/pt-pt\/coco-pensa-e-coco-se-mexe\/\" class=\"app-badge\">\ud83d\udc76 COCO<\/a> <a href=\"https:\/\/www.dynseo.com\/pt-pt\/o-programa-dos-treinadores\/fernando-o-seu-treinador-de-cerebro\/\" class=\"app-badge\">\ud83e\uddd1 JOE<\/a> <a href=\"https:\/\/www.dynseo.com\/pt-pt\/dynseo-3\/carmen\/\" class=\"app-badge\">\ud83d\udc74 EDITH<\/a> <\/div>\n<p> <\/div>\n<p>  <\/p>\n<div class=\"game-box\"> <\/p>\n<div class=\"players\"> <\/p>\n<div class=\"player\" id=\"pb\">\ud83e\udd16 Computador<\/div>\n<p> <\/p>\n<div class=\"player active\" id=\"pw\">\ud83d\udc64 Voc\u00ea<\/div>\n<p> <\/div>\n<p> <\/p>\n<div class=\"levels\"> <button class=\"lvl\" data-d=\"1\">\ud83d\udfe2 F\u00e1cil<\/button> <button class=\"lvl active\" data-d=\"2\">\ud83d\udfe1 Normal<\/button> <button class=\"lvl\" data-d=\"3\">\ud83d\udfe0 Dif\u00edcil<\/button> <button class=\"lvl\" data-d=\"4\">\ud83d\udd34 Especialista<\/button> <button class=\"lvl\" data-d=\"5\">\ud83d\udc51 Campe\u00e3o<\/button> <\/div>\n<p> <\/p>\n<div class=\"msg\" id=\"msg\">A sua vez de jogar!<\/div>\n<p> <\/p>\n<div class=\"board-wrap\">\n<div class=\"board\" id=\"brd\"><\/div>\n<\/div>\n<p> <\/p>\n<div class=\"btns\"> <button class=\"btn pr\" id=\"newg\">\ud83d\udd04 Nova partida<\/button> <button class=\"btn sc\" id=\"flip\">\ud83d\udd03 Inverter<\/button> <\/div>\n<p> <\/div>\n<p>  <\/p>\n<div class=\"seo-content\"> <\/p>\n<h2>Jogue xadrez gratuitamente<\/h2>\n<p> <pee>O xadrez estimula o pensamento estrat\u00e9gico e a concentra\u00e7\u00e3o. 5 n\u00edveis de dificuldade para evoluir ao seu ritmo!<\/pee> <\/div>\n<p> <\/div>\n<p>  <\/p>\n<div class=\"modal-bg\" id=\"pm\">\n<div class=\"modal\">\n<h2>Promo\u00e7\u00e3o<\/h2>\n<div class=\"promo-row\" id=\"ppc\"><\/div>\n<\/div>\n<\/div>\n<p> <\/p>\n<div class=\"modal-bg\" id=\"em\">\n<div class=\"modal\">\n<h2 id=\"et\"><\/h2>\n<pee id=\"ex\"><\/pee><button class=\"btn pr\" id=\"rstb\" style=\"margin-top:15px\">\ud83d\udd04 Jogar de novo<\/button><\/div>\n<\/div>\n<p>  <script> (function(){ var P={wK:'\u2654',wQ:'\u2655',wR:'\u2656',wB:'\u2657',wN:'\u2658',wP:'\u2659',bK:'\u265a',bQ:'\u265b',bR:'\u265c',bB:'\u265d',bN:'\u265e',bP:'\u265f'}; var V={P:100,N:320,B:330,R:500,Q:900,K:20000}; \/\/ Tabelas de posi\u00e7\u00e3o para avalia\u00e7\u00e3o avan\u00e7ada (piece-square tables) var PST={ P:[0,0,0,0,0,0,0,0,50,50,50,50,50,50,50,50,10,10,20,30,30,20,10,10,5,5,10,25,25,10,5,5,0,0,0,20,20,0,0,0,5,-5,-10,0,0,-10,-5,5,5,10,10,-20,-20,10,10,5,0,0,0,0,0,0,0,0], N:[-50,-40,-30,-30,-30,-30,-40,-50,-40,-20,0,0,0,0,-20,-40,-30,0,10,15,15,10,0,-30,-30,5,15,20,20,15,5,-30,-30,0,15,20,20,15,0,-30,-30,5,10,15,15,10,5,-30,-40,-20,0,5,5,0,-20,-40,-50,-40,-30,-30,-30,-30,-40,-50], B:[-20,-10,-10,-10,-10,-10,-10,-20,-10,0,0,0,0,0,0,-10,-10,0,5,10,10,5,0,-10,-10,5,5,10,10,5,5,-10,-10,0,10,10,10,10,0,-10,-10,10,10,10,10,10,10,-10,-10,5,0,0,0,0,5,-10,-20,-10,-10,-10,-10,-10,-10,-20], R:[0,0,0,0,0,0,0,0,5,10,10,10,10,10,10,5,-5,0,0,0,0,0,0,-5,-5,0,0,0,0,0,0,-5,-5,0,0,0,0,0,0,-5,-5,0,0,0,0,0,0,-5,-5,0,0,0,0,0,0,-5,0,0,0,5,5,0,0,0], Q:[-20,-10,-10,-5,-5,-10,-10,-20,-10,0,0,0,0,0,0,-10,-10,0,5,5,5,5,0,-10,-5,0,5,5,5,5,0,-5,0,0,5,5,5,5,0,-5,-10,5,5,5,5,5,0,-10,-10,0,5,0,0,0,0,-10,-20,-10,-10,-5,-5,-10,-10,-20], K:[-30,-40,-40,-50,-50,-40,-40,-30,-30,-40,-40,-50,-50,-40,-40,-30,-30,-40,-40,-50,-50,-40,-40,-30,-30,-40,-40,-50,-50,-40,-40,-30,-20,-30,-30,-40,-40,-30,-30,-20,-10,-20,-20,-20,-20,-20,-20,-10,20,20,0,0,0,0,20,20,20,30,10,0,0,10,30,20] }; var b,sel,trn,over,flip,dep,last,cast,ep,ppromo;  function init(){ document.querySelectorAll('.lvl').forEach(function(x){ x.onclick=function(){ document.querySelectorAll('.lvl').forEach(function(y){y.classList.remove('active');}); this.classList.add('active'); dep=+this.dataset.d; newG(); }; }); document.getElementById('newg').onclick=newG; document.getElementById('flip').onclick=function(){flip=!flip;draw();}; document.getElementById('rstb').onclick=function(){document.getElementById('em').classList.remove('show');newG();}; document.getElementById('brd').onclick=function(e){var s=e.target.closest('.sq');if(s)click(+s.dataset.r,+s.dataset.c);}; dep=2;newG(); }  function newG(){ b=[['bR','bN','bB','bQ','bK','bB','bN','bR'],['bP','bP','bP','bP','bP','bP','bP','bP'],['','','','','','','',''],['','','','','','','',''],['','','','','','','',''],['','','','','','','',''],['wP','wP','wP','wP','wP','wP','wP','wP'],['wR','wN','wB','wQ','wK','wB','wN','wR']]; sel=null;trn='w';over=false;last=null;cast={wK:1,wQ:1,bK:1,bQ:1};ep=null; document.getElementById('msg').textContent='A sua vez de jogar!'; document.getElementById('pw').classList.add('active'); document.getElementById('pb').classList.remove('active'); draw(); }  function draw(){ var el=document.getElementById('brd');el.innerHTML=''; for(var ri=0;ri<8;ri++)for(var ci=0;ci<8;ci++){ var r=flip?7-ri:ri,c=flip?7-ci:ci; var sq=document.createElement('div'); sq.className='sq '+((r+c)%2?'d':'l'); sq.dataset.r=r;sq.dataset.c=c; if(b[r][c]){var s=document.createElement('span');s.className='pc';s.textContent=P[b[r][c]];sq.appendChild(s);} if(sel&&sel.r===r&&sel.c===c)sq.classList.add('sel'); if(last&&((last.fr===r&&last.fc===c)||(last.tr===r&&last.tc===c)))sq.classList.add('last'); if(b[r][c]&&b[r][c][1]==='K'&&chk(b[r][c][0]))sq.classList.add('chk'); if(sel){var mv=legal(sel.r,sel.c);for(var i=0;i<mv.length;i++)if(mv[i].r===r&&mv[i].c===c)sq.classList.add(b[r][c]?'cap':'dot');} el.appendChild(sq); } }  function click(r,c){ if(over||trn==='b')return; if(sel){var mv=legal(sel.r,sel.c);for(var i=0;i<mv.length;i++)if(mv[i].r===r&&mv[i].c===c){doMv(sel.r,sel.c,r,c);sel=null;draw();return;}} if(b[r][c]&&b[r][c][0]==='w')sel={r:r,c:c};else sel=null; draw(); }  function doMv(fr,fc,tr,tc,pro){ var pc=b[fr][fc]; if(pc[1]==='P'&&tc!==fc&&!b[tr][tc])b[pc[0]==='w'?tr+1:tr-1][tc]=''; if(pc[1]==='K'&&Math.abs(tc-fc)===2){if(tc>fc){b[fr][5]=b[fr][7];b[fr][7]='';}else{b[fr][3]=b[fr][0];b[fr][0]='';}} if(pc[1]==='K'){cast[pc[0]+'K']=0;cast[pc[0]+'Q']=0;} if(pc[1]==='R'){if(fr===7&&fc===0)cast.wQ=0;if(fr===7&&fc===7)cast.wK=0;if(fr===0&&fc===0)cast.bQ=0;if(fr===0&&fc===7)cast.bK=0;} ep=(pc[1]==='P'&&Math.abs(tr-fr)===2)?{r:(fr+tr)\/2,c:tc}:null; b[tr][tc]=pc;b[fr][fc]=''; if(pc[1]==='P'&&(tr===0||tr===7)){if(pro)b[tr][tc]=pc[0]+pro;else if(trn==='w'){ppromo={r:tr,c:tc,col:pc[0]};showPro(pc[0]);return;}else b[tr][tc]=pc[0]+'Q';} finMv(fr,fc,tr,tc); }  function finMv(fr,fc,tr,tc){ last={fr:fr,fc:fc,tr:tr,tc:tc};trn=trn==='w'?'b':'w'; document.getElementById('pw').classList.toggle('active',trn==='w'); document.getElementById('pb').classList.toggle('active',trn==='b'); if(mate(trn)){over=true;document.getElementById('et').textContent=trn==='w'?'Derrota':'Vit\u00f3ria!';document.getElementById('ex').textContent='Xeque-mate';document.getElementById('em').classList.add('show');return;} if(stale(trn)){over=true;document.getElementById('et').textContent='Afogamento';document.getElementById('ex').textContent='Empate';document.getElementById('em').classList.add('show');return;} draw(); if(trn==='b'){document.getElementById('msg').textContent='O computador est\u00e1 a pensar...';setTimeout(ai,100);} else document.getElementById('msg').textContent=chk('w')?'\u26a0\ufe0f Xeque!':'A sua vez!'; }  function showPro(col){ var pcs=col==='w'?['\u2655','\u2656','\u2657','\u2658']:['\u265b','\u265c','\u265d','\u265e'],ts=['Q','R','B','N']; var ct=document.getElementById('ppc');ct.innerHTML=''; for(var i=0;i<4;i++){var x=document.createElement('span');x.className='promo-pc';x.textContent=pcs[i];x.dataset.t=ts[i];x.onclick=function(){b[ppromo.r][ppromo.c]=ppromo.col+this.dataset.t;document.getElementById('pm').classList.remove('show');finMv(0,0,ppromo.r,ppromo.c);};ct.appendChild(x);} document.getElementById('pm').classList.add('show'); }  function legal(r,c){var pc=b[r][c];if(!pc)return[];var mv=pseudo(r,c),ok=[];for(var i=0;i<mv.length;i++)if(!wouldChk(r,c,mv[i].r,mv[i].c,pc[0]))ok.push(mv[i]);return ok;}  function pseudo(r,c){ var pc=b[r][c];if(!pc)return[];var t=pc[1],col=pc[0],m=[]; if(t==='P'){var d=col==='w'?-1:1,st=col==='w'?6:1;if(b[r+d]&&!b[r+d][c]){m.push({r:r+d,c:c});if(r===st&&!b[r+2*d][c])m.push({r:r+2*d,c:c});}for(var dc=-1;dc<=1;dc+=2){var nc=c+dc,nr=r+d;if(nc>=0&&nc<8&&nr>=0&&nr<8){if(b[nr][nc]&&b[nr][nc][0]!==col)m.push({r:nr,c:nc});if(ep&&ep.r===nr&&ep.c===nc)m.push({r:nr,c:nc});}}} else if(t==='N'){[[-2,-1],[-2,1],[-1,-2],[-1,2],[1,-2],[1,2],[2,-1],[2,1]].forEach(function(k){var nr=r+k[0],nc=c+k[1];if(nr>=0&&nr<8&&nc>=0&&nc<8&&(!b[nr][nc]||b[nr][nc][0]!==col))m.push({r:nr,c:nc});});} else if(t==='B')m=sld(r,c,col,[[-1,-1],[-1,1],[1,-1],[1,1]]); else if(t==='R')m=sld(r,c,col,[[-1,0],[1,0],[0,-1],[0,1]]); else if(t==='Q')m=sld(r,c,col,[[-1,-1],[-1,1],[1,-1],[1,1],[-1,0],[1,0],[0,-1],[0,1]]); else if(t==='K'){for(var dr=-1;dr<=1;dr++)for(var dc=-1;dc<=1;dc++){if(!dr&&!dc)continue;var nr=r+dr,nc=c+dc;if(nr>=0&&nr<8&&nc>=0&&nc<8&&(!b[nr][nc]||b[nr][nc][0]!==col))m.push({r:nr,c:nc});}var rw=col==='w'?7:0;if(r===rw&&c===4){if(cast[col+'K']&&!b[rw][5]&&!b[rw][6]&&b[rw][7]===(col+'R')&&!chk(col)&&!att(rw,5,col==='w'?'b':'w')&&!att(rw,6,col==='w'?'b':'w'))m.push({r:rw,c:6});if(cast[col+'Q']&&!b[rw][1]&&!b[rw][2]&&!b[rw][3]&&b[rw][0]===(col+'R')&&!chk(col)&&!att(rw,2,col==='w'?'b':'w')&&!att(rw,3,col==='w'?'b':'w'))m.push({r:rw,c:2});}} return m; }  function sld(r,c,col,dirs){var m=[];dirs.forEach(function(d){var nr=r+d[0],nc=c+d[1];while(nr>=0&&nr<8&&nc>=0&&nc<8){if(!b[nr][nc])m.push({r:nr,c:nc});else{if(b[nr][nc][0]!==col)m.push({r:nr,c:nc});break;}nr+=d[0];nc+=d[1];}});return m;} function fK(col){for(var r=0;r<8;r++)for(var c=0;c<8;c++)if(b[r][c]===col+'K')return{r:r,c:c};return null;} function att(r,c,by){for(var rr=0;rr<8;rr++)for(var cc=0;cc<8;cc++)if(b[rr][cc]&&b[rr][cc][0]===by){var mv=pseudo(rr,cc);for(var i=0;i<mv.length;i++)if(mv[i].r===r&&mv[i].c===c)return true;}return false;} function chk(col){var k=fK(col);return k?att(k.r,k.c,col==='w'?'b':'w'):false;} function wouldChk(fr,fc,tr,tc,col){var a=b[fr][fc],x=b[tr][tc];b[tr][tc]=a;b[fr][fc]='';var c=chk(col);b[fr][fc]=a;b[tr][tc]=x;return c;} function hasLeg(col){for(var r=0;r<8;r++)for(var c=0;c<8;c++)if(b[r][c]&&b[r][c][0]===col&&legal(r,c).length)return true;return false;} function mate(col){return chk(col)&&!hasLeg(col);} function stale(col){return !chk(col)&&!hasLeg(col);}  function ai(){ var mvs=getAllMoves('b'); if(!mvs.length)return; \/\/ Embaralhar para variedade mvs.sort(function(){return Math.random()-0.5;}); \/\/ Ordena\u00e7\u00e3o MVV-LVA para melhorar alpha-beta (capturas primeiro) mvs.sort(function(a,x){return (b[x.tr][x.tc]?V[b[x.tr][x.tc][1]]:0)-(b[a.tr][a.tc]?V[b[a.tr][a.tc][1]]:0);});  var best=null,bestV=-999999; for(var i=0;i<mvs.length;i++){ var m=mvs[i],a=b[m.fr][m.fc],x=b[m.tr][m.tc]; b[m.tr][m.tc]=a;b[m.fr][m.fc]=''; var v=-mini(dep-1,-999999,999999,true); b[m.fr][m.fc]=a;b[m.tr][m.tc]=x; if(v>bestV){bestV=v;best=m;} } if(best)doMv(best.fr,best.fc,best.tr,best.tc,'Q'); }  function getAllMoves(col){ var mvs=[]; for(var r=0;r<8;r++)for(var c=0;c<8;c++)if(b[r][c]&&b[r][c][0]===col){var mv=legal(r,c);for(var i=0;i<mv.length;i++)mvs.push({fr:r,fc:c,tr:mv[i].r,tc:mv[i].c});} return mvs; }  function mini(d,alpha,beta,isMax){ if(d===0)return evl(); var col=isMax?'w':'b',mvs=getAllMoves(col); if(!mvs.length)return chk(col)?(isMax?-90000:90000):0; \/\/ Ordena\u00e7\u00e3o para melhorar a poda alpha-beta mvs.sort(function(a,x){return (b[x.tr][x.tc]?V[b[x.tr][x.tc][1]]:0)-(b[a.tr][a.tc]?V[b[a.tr][a.tc][1]]:0);});  if(isMax){ var mx=-999999; for(var i=0;i<mvs.length;i++){ var m=mvs[i],a=b[m.fr][m.fc],x=b[m.tr][m.tc]; b[m.tr][m.tc]=a;b[m.fr][m.fc]=''; var v=mini(d-1,alpha,beta,false); b[m.fr][m.fc]=a;b[m.tr][m.tc]=x; if(v>mx)mx=v; if(v>alpha)alpha=v; if(beta<=alpha)break; } return mx; }else{ var mn=999999; for(var i=0;i<mvs.length;i++){ var m=mvs[i],a=b[m.fr][m.fc],x=b[m.tr][m.tc]; b[m.tr][m.tc]=a;b[m.fr][m.fc]=''; var v=mini(d-1,alpha,beta,true); b[m.fr][m.fc]=a;b[m.tr][m.tc]=x; if(v<mn)mn=v; if(v<beta)beta=v; if(beta<=alpha)break; } return mn; } }  function evl(){ var s=0; for(var r=0;r<8;r++)for(var c=0;c<8;c++){ var pc=b[r][c]; if(pc){ var t=pc[1],col=pc[0]; var v=V[t]||0; \/\/ B\u00f3nus de posi\u00e7\u00e3o (Piece-Square Tables) if(PST[t]){ var idx=col==='w'?r*8+c:(7-r)*8+c; v+=PST[t][idx]; } s+=col==='b'?v:-v; } } \/\/ B\u00f3nus de mobilidade para n\u00edveis altos (Especialista e Campe\u00e3o) if(dep>=4){ s+=getAllMoves('b').length*3; s-=getAllMoves('w').length*3; } \/\/ B\u00f3nus de controlo do centro para Campe\u00e3o if(dep>=5){ for(var r=3;r<=4;r++)for(var c=3;c<=4;c++){ if(b[r][c]){s+=b[r][c][0]==='b'?15:-15;} } } return s; }  if(document.readyState==='loading')document.addEventListener('DOMContentLoaded',init);else init(); })(); <\/script><\/body><\/html>[\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":4,"featured_media":130227,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-486984","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\n<title>Jogo de Xadrez Online - DYNSEO - Aplica\u00e7\u00f5es educativas e jogos de mem\u00f3ria<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dynseo.com\/pt-pt\/jogo-de-xadrez-online\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jogo de Xadrez Online - DYNSEO - 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