If you use chess.com, downloadd the official custom peices extension and then export all of the costumes in the sprite. Click the extension in the jigsaw button on chrome and then set each peice to the corresponding costume. all of the costumes will be set to pngs as long as you dont export the entire sprite! hope this helps! ps if anyone knows a great board custom board that would be great bc i cant import the one from the game because its too small 8^) remix it and make spamton shorter if you want but i perfer him being a bit too big for the square. all other peices fit in their squares perfectly though. Feel free to switch around which character is which peice! [[I didnt use king because hes ugly and i like ralsei]]
all costumes made by me! 8^)