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grondilu/chess-card.html Secret

Last active August 18, 2023 06:32
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Anki card to display chess positions from FEN field
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chess-card.html
<svg viewBox="0 0 80 80" width="400px" xmlns="http://www.w3.org/2000/svg">
<style type=text/css >
.black-square {
fill: darkgray;
}
.light-square {
fill: lightgray;
}
</style>
<defs>
<pattern id="checkboard" viewBox="0,0,2,2" width="25%" height="25%" >
<rect width=1 height=1 x=1 class=black-square />
<rect width=1 height=1 y=1 class=black-square />
<rect width=1 height=1 x=1 y=1 class=light-square />
<rect width=1 height=1 class=light-square />
</pattern>
<!-- https://commons.wikimedia.org/wiki/File:Chess_Pieces_Sprite.svg -->
<symbol id="K" fill="none" fill-rule="evenodd"
stroke="#000" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5"
viewBox="0 0 45 45">
<path stroke-linejoin="miter" d="M22.5 11.63V6M20 8h5"/>
<path fill="#fff" stroke-linecap="butt" stroke-linejoin="miter" d="M22.5 25s4.5-7.5 3-10.5c0 0-1-2.5-3-2.5s-3 2.5-3 2.5c-1.5 3 3 10.5 3 10.5"/>
<path fill="#fff" d="M12.5 37c5.5 3.5 14.5 3.5 20 0v-7s9-4.5 6-10.5c-4-6.5-13.5-3.5-16 4V27v-3.5c-2.5-7.5-12-10.5-16-4-3 6 6 10.5 6 10.5v7"/>
<path d="M12.5 30c5.5-3 14.5-3 20 0m-20 3.5c5.5-3 14.5-3 20 0m-20 3.5c5.5-3 14.5-3 20 0"/>
</symbol>
<symbol id="Q" viewBox="0 0 45 45" style="fill:#ffffff;stroke:#000000;stroke-width:1.5;stroke-linejoin:round">
<path d="M 9,26 C 17.5,24.5 30,24.5 36,26 L 38.5,13.5 L 31,25 L 30.7,10.9 L 25.5,24.5 L 22.5,10 L 19.5,24.5 L 14.3,10.9 L 14,25 L 6.5,13.5 L 9,26 z"/>
<path d="M 9,26 C 9,28 10.5,28 11.5,30 C 12.5,31.5 12.5,31 12,33.5 C 10.5,34.5 11,36 11,36 C 9.5,37.5 11,38.5 11,38.5 C 17.5,39.5 27.5,39.5 34,38.5 C 34,38.5 35.5,37.5 34,36 C 34,36 34.5,34.5 33,33.5 C 32.5,31 32.5,31.5 33.5,30 C 34.5,28 36,28 36,26 C 27.5,24.5 17.5,24.5 9,26 z"/>
<path d="M 11.5,30 C 15,29 30,29 33.5,30" style="fill:none"/>
<path d="M 12,33.5 C 18,32.5 27,32.5 33,33.5" style="fill:none"/>
<circle cx="6" cy="12" r="2" />
<circle cx="14" cy="9" r="2" />
<circle cx="22.5" cy="8" r="2" />
<circle cx="31" cy="9" r="2" />
<circle cx="39" cy="12" r="2" />
</symbol>
<symbol id="B" viewBox="0 0 45 45" style="opacity:1; fill:none; fill-rule:evenodd; fill-opacity:1; stroke:#000000; stroke-width:1.5; stroke-linecap:round; stroke-linejoin:round; stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;">
<g style="fill:#ffffff; stroke:#000000; stroke-linecap:butt;">
<path d="M 9,36 C 12.39,35.03 19.11,36.43 22.5,34 C 25.89,36.43 32.61,35.03 36,36 C 36,36 37.65,36.54 39,38 C 38.32,38.97 37.35,38.99 36,38.5 C 32.61,37.53 25.89,38.96 22.5,37.5 C 19.11,38.96 12.39,37.53 9,38.5 C 7.646,38.99 6.677,38.97 6,38 C 7.354,36.06 9,36 9,36 z" />
<path d="M 15,32 C 17.5,34.5 27.5,34.5 30,32 C 30.5,30.5 30,30 30,30 C 30,27.5 27.5,26 27.5,26 C 33,24.5 33.5,14.5 22.5,10.5 C 11.5,14.5 12,24.5 17.5,26 C 17.5,26 15,27.5 15,30 C 15,30 14.5,30.5 15,32 z" />
<path d="M 25 8 A 2.5 2.5 0 1 1 20,8 A 2.5 2.5 0 1 1 25 8 z" />
</g>
<path d="M 17.5,26 L 27.5,26 M 15,30 L 30,30 M 22.5,15.5 L 22.5,20.5 M 20,18 L 25,18" style="fill:none; stroke:#000000; stroke-linejoin:miter;" />
</symbol>
<symbol id="N" viewBox="0 0 45 45" style="opacity:1; fill:none; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;">
<path d="M 22,10 C 32.5,11 38.5,18 38,39 L 15,39 C 15,30 25,32.5 23,18" style="fill:#ffffff; stroke:#000000;" />
<path d="M 24,18 C 24.38,20.91 18.45,25.37 16,27 C 13,29 13.18,31.34 11,31 C 9.958,30.06 12.41,27.96 11,28 C 10,28 11.19,29.23 10,30 C 9,30 5.997,31 6,26 C 6,24 12,14 12,14 C 12,14 13.89,12.1 14,10.5 C 13.27,9.506 13.5,8.5 13.5,7.5 C 14.5,6.5 16.5,10 16.5,10 L 18.5,10 C 18.5,10 19.28,8.008 21,7 C 22,7 22,10 22,10" style="fill:#ffffff; stroke:#000000;" />
<path d="M 9.5 25.5 A 0.5 0.5 0 1 1 8.5,25.5 A 0.5 0.5 0 1 1 9.5 25.5 z" style="fill:#000000; stroke:#000000;" />
<path d="M 15 15.5 A 0.5 1.5 0 1 1 14,15.5 A 0.5 1.5 0 1 1 15 15.5 z" transform="matrix(0.866,0.5,-0.5,0.866,9.693,-5.173)" style="fill:#000000; stroke:#000000;" />
</symbol>
<symbol id="R" viewBox="0 0 45 45" style="opacity:1; fill:#ffffff; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;">
<path d="M 9,39 L 36,39 L 36,36 L 9,36 L 9,39 z " style="stroke-linecap:butt;" />
<path d="M 12,36 L 12,32 L 33,32 L 33,36 L 12,36 z " style="stroke-linecap:butt;" />
<path d="M 11,14 L 11,9 L 15,9 L 15,11 L 20,11 L 20,9 L 25,9 L 25,11 L 30,11 L 30,9 L 34,9 L 34,14" style="stroke-linecap:butt;" />
<path d="M 34,14 L 31,17 L 14,17 L 11,14" />
<path d="M 31,17 L 31,29.5 L 14,29.5 L 14,17" style="stroke-linecap:butt; stroke-linejoin:miter;" />
<path d="M 31,29.5 L 32.5,32 L 12.5,32 L 14,29.5" />
<path d="M 11,14 L 34,14" style="fill:none; stroke:#000000; stroke-linejoin:miter;" />
</symbol>
<symbol id="P" viewBox="0 0 45 45" >
<path d="M 22,9 C 19.79,9 18,10.79 18,13 C 18,13.89 18.29,14.71 18.78,15.38 C 16.83,16.5 15.5,18.59 15.5,21 C 15.5,23.03 16.44,24.84 17.91,26.03 C 14.91,27.09 10.5,31.58 10.5,39.5 L 33.5,39.5 C 33.5,31.58 29.09,27.09 26.09,26.03 C 27.56,24.84 28.5,23.03 28.5,21 C 28.5,18.59 27.17,16.5 25.22,15.38 C 25.71,14.71 26,13.89 26,13 C 26,10.79 24.21,9 22,9 z " style="opacity:1; fill:#ffffff; fill-opacity:1; fill-rule:nonzero; stroke:#000000; stroke-width:1.5; stroke-linecap:round; stroke-linejoin:miter; stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;" />
</symbol>
<symbol id="k" viewBox="0 0 45 45"
style="fill:none; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;"
>
<path d="M 22.5,11.63 L 22.5,6" style="fill:none; stroke:#000000; stroke-linejoin:miter;" />
<path d="M 22.5,25 C 22.5,25 27,17.5 25.5,14.5 C 25.5,14.5 24.5,12 22.5,12 C 20.5,12 19.5,14.5 19.5,14.5 C 18,17.5 22.5,25 22.5,25" style="fill:#000000;fill-opacity:1; stroke-linecap:butt; stroke-linejoin:miter;" />
<path d="M 11.5,37 C 17,40.5 27,40.5 32.5,37 L 32.5,30 C 32.5,30 41.5,25.5 38.5,19.5 C 34.5,13 25,16 22.5,23.5 L 22.5,27 L 22.5,23.5 C 19,16 9.5,13 6.5,19.5 C 3.5,25.5 11.5,29.5 11.5,29.5 L 11.5,37 z " style="fill:#000000; stroke:#000000;" />
<path d="M 20,8 L 25,8" style="fill:none; stroke:#000000; stroke-linejoin:miter;" />
<path d="M 32,29.5 C 32,29.5 40.5,25.5 38.03,19.85 C 34.15,14 25,18 22.5,24.5 L 22.51,26.6 L 22.5,24.5 C 20,18 9.906,14 6.997,19.85 C 4.5,25.5 11.85,28.85 11.85,28.85" style="fill:none; stroke:#ffffff;" />
<path d="M 11.5,30 C 17,27 27,27 32.5,30 M 11.5,33.5 C 17,30.5 27,30.5 32.5,33.5 M 11.5,37 C 17,34 27,34 32.5,37" style="fill:none; stroke:#ffffff;" />
</symbol>
<symbol id="q" viewBox="0 0 45 45" style="opacity:1; fill:000000; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;">
<g style="fill:#000000; stroke:none;">
<circle cx="6" cy="12" r="2.75" />
<circle cx="14" cy="9" r="2.75" />
<circle cx="22.5" cy="8" r="2.75" />
<circle cx="31" cy="9" r="2.75" />
<circle cx="39" cy="12" r="2.75" />
</g>
<path d="M 9,26 C 17.5,24.5 30,24.5 36,26 L 38.5,13.5 L 31,25 L 30.7,10.9 L 25.5,24.5 L 22.5,10 L 19.5,24.5 L 14.3,10.9 L 14,25 L 6.5,13.5 L 9,26 z" style="stroke-linecap:butt; stroke:#000000;" />
<path d="M 9,26 C 9,28 10.5,28 11.5,30 C 12.5,31.5 12.5,31 12,33.5 C 10.5,34.5 10.5,36 10.5,36 C 9,37.5 11,38.5 11,38.5 C 17.5,39.5 27.5,39.5 34,38.5 C 34,38.5 35.5,37.5 34,36 C 34,36 34.5,34.5 33,33.5 C 32.5,31 32.5,31.5 33.5,30 C 34.5,28 36,28 36,26 C 27.5,24.5 17.5,24.5 9,26 z" style="stroke-linecap:butt;" />
<path d="M 11,38.5 A 35,35 1 0 0 34,38.5" style="fill:none; stroke:#000000; stroke-linecap:butt;" />
<path d="M 11,29 A 35,35 1 0 1 34,29" style="fill:none; stroke:#ffffff;" />
<path d="M 12.5,31.5 L 32.5,31.5" style="fill:none; stroke:#ffffff;" />
<path d="M 11.5,34.5 A 35,35 1 0 0 33.5,34.5" style="fill:none; stroke:#ffffff;" />
<path d="M 10.5,37.5 A 35,35 1 0 0 34.5,37.5" style="fill:none; stroke:#ffffff;" />
</symbol>
<symbol id="b" viewBox="0 0 45 45" style="opacity:1; fill:none; fill-rule:evenodd; fill-opacity:1; stroke:#000000; stroke-width:1.5; stroke-linecap:round; stroke-linejoin:round; stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;">
<g style="fill:#000000; stroke:#000000; stroke-linecap:butt;">
<path d="M 9,36 C 12.39,35.03 19.11,36.43 22.5,34 C 25.89,36.43 32.61,35.03 36,36 C 36,36 37.65,36.54 39,38 C 38.32,38.97 37.35,38.99 36,38.5 C 32.61,37.53 25.89,38.96 22.5,37.5 C 19.11,38.96 12.39,37.53 9,38.5 C 7.646,38.99 6.677,38.97 6,38 C 7.354,36.06 9,36 9,36 z" />
<path d="M 15,32 C 17.5,34.5 27.5,34.5 30,32 C 30.5,30.5 30,30 30,30 C 30,27.5 27.5,26 27.5,26 C 33,24.5 33.5,14.5 22.5,10.5 C 11.5,14.5 12,24.5 17.5,26 C 17.5,26 15,27.5 15,30 C 15,30 14.5,30.5 15,32 z" />
<path d="M 25 8 A 2.5 2.5 0 1 1 20,8 A 2.5 2.5 0 1 1 25 8 z" />
</g>
<path d="M 17.5,26 L 27.5,26 M 15,30 L 30,30 M 22.5,15.5 L 22.5,20.5 M 20,18 L 25,18" style="fill:none; stroke:#ffffff; stroke-linejoin:miter;" />
</symbol>
<symbol id="n" viewBox="0 0 45 45" style="opacity:1; fill:none; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;">
<path d="M 22,10 C 32.5,11 38.5,18 38,39 L 15,39 C 15,30 25,32.5 23,18" style="fill:#000000; stroke:#000000;" />
<path d="M 24,18 C 24.38,20.91 18.45,25.37 16,27 C 13,29 13.18,31.34 11,31 C 9.958,30.06 12.41,27.96 11,28 C 10,28 11.19,29.23 10,30 C 9,30 5.997,31 6,26 C 6,24 12,14 12,14 C 12,14 13.89,12.1 14,10.5 C 13.27,9.506 13.5,8.5 13.5,7.5 C 14.5,6.5 16.5,10 16.5,10 L 18.5,10 C 18.5,10 19.28,8.008 21,7 C 22,7 22,10 22,10" style="fill:#000000; stroke:#000000;" />
<path d="M 9.5 25.5 A 0.5 0.5 0 1 1 8.5,25.5 A 0.5 0.5 0 1 1 9.5 25.5 z" style="fill:#ffffff; stroke:#ffffff;" />
<path d="M 15 15.5 A 0.5 1.5 0 1 1 14,15.5 A 0.5 1.5 0 1 1 15 15.5 z" transform="matrix(0.866,0.5,-0.5,0.866,9.693,-5.173)" style="fill:#ffffff; stroke:#ffffff;" />
<path d="M 24.55,10.4 L 24.1,11.85 L 24.6,12 C 27.75,13 30.25,14.49 32.5,18.75 C 34.75,23.01 35.75,29.06 35.25,39 L 35.2,39.5 L 37.45,39.5 L 37.5,39 C 38,28.94 36.62,22.15 34.25,17.66 C 31.88,13.17 28.46,11.02 25.06,10.5 L 24.55,10.4 z " style="fill:#ffffff; stroke:none;" />
</symbol>
<symbol id="r" viewBox="0 0 45 45" style="opacity:1; fill:000000; fill-opacity:1; fill-rule:evenodd; stroke:#000000; stroke-width:1.5; stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;">
<path d="M 9,39 L 36,39 L 36,36 L 9,36 L 9,39 z " style="stroke-linecap:butt;" />
<path d="M 12.5,32 L 14,29.5 L 31,29.5 L 32.5,32 L 12.5,32 z " style="stroke-linecap:butt;" />
<path d="M 12,36 L 12,32 L 33,32 L 33,36 L 12,36 z " style="stroke-linecap:butt;" />
<path d="M 14,29.5 L 14,16.5 L 31,16.5 L 31,29.5 L 14,29.5 z " style="stroke-linecap:butt;stroke-linejoin:miter;" />
<path d="M 14,16.5 L 11,14 L 34,14 L 31,16.5 L 14,16.5 z " style="stroke-linecap:butt;" />
<path d="M 11,14 L 11,9 L 15,9 L 15,11 L 20,11 L 20,9 L 25,9 L 25,11 L 30,11 L 30,9 L 34,9 L 34,14 L 11,14 z " style="stroke-linecap:butt;" />
<path d="M 12,35.5 L 33,35.5 L 33,35.5" style="fill:none; stroke:#ffffff; stroke-width:1; stroke-linejoin:miter;" />
<path d="M 13,31.5 L 32,31.5" style="fill:none; stroke:#ffffff; stroke-width:1; stroke-linejoin:miter;" />
<path d="M 14,29.5 L 31,29.5" style="fill:none; stroke:#ffffff; stroke-width:1; stroke-linejoin:miter;" />
<path d="M 14,16.5 L 31,16.5" style="fill:none; stroke:#ffffff; stroke-width:1; stroke-linejoin:miter;" />
<path d="M 11,14 L 34,14" style="fill:none; stroke:#ffffff; stroke-width:1; stroke-linejoin:miter;" />
</symbol>
<symbol id="p" viewBox="0 0 45 45">
<path d="M 22,9 C 19.79,9 18,10.79 18,13 C 18,13.89 18.29,14.71 18.78,15.38 C 16.83,16.5 15.5,18.59 15.5,21 C 15.5,23.03 16.44,24.84 17.91,26.03 C 14.91,27.09 10.5,31.58 10.5,39.5 L 33.5,39.5 C 33.5,31.58 29.09,27.09 26.09,26.03 C 27.56,24.84 28.5,23.03 28.5,21 C 28.5,18.59 27.17,16.5 25.22,15.38 C 25.71,14.71 26,13.89 26,13 C 26,10.79 24.21,9 22,9 z " style="opacity:1; fill:#000000; fill-opacity:1; fill-rule:nonzero; stroke:#000000; stroke-width:1.5; stroke-linecap:round; stroke-linejoin:miter; stroke-miterlimit:4; stroke-dasharray:none; stroke-opacity:1;" />
</symbol>
</defs>
<rect width="80" height="80" fill="url(#checkboard)" />
</svg>
<script>{
"use strict";
const fen = "{{FEN}}";
const turn = fen.split(' ')[1];
const board = fen
.split(" ")[0]
.replaceAll("8","71")
.replaceAll("7","61")
.replaceAll("6","51")
.replaceAll("5","41")
.replaceAll("4","31")
.replaceAll("3","21")
.replaceAll("2","11")
.split("/")
.map(x => x.split(''));
const svgNamespace = "http://www.w3.org/2000/svg";
const xlinkNamespace = "http://www.w3.org/1999/xlink";
const svg = document.getElementsByTagName('svg')[0];
for (let i = 0; i<8; i++)
for (let j = 0; j<8; j++) {
let [u,v] = [i,j];
if (turn == "b") {
[u,v] = [7-u,7-v];
}
if (board[i][j].match(/[KQBNRP]/i)) {
let piece = document.createElementNS(svgNamespace, "use");
piece.setAttributeNS(xlinkNamespace, "xlink:href","#"+board[i][j]);
piece.setAttribute("x", (v*10).toString());
piece.setAttribute("y", (u*10).toString());
piece.setAttribute("width", "10");
piece.setAttribute("height", "10");
svg.appendChild(piece);
}
}
}</script>
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