Pieces for one side of a chess game, which lie flat and interlock with each other.

Print two copies at a scale appropriate for the board you intend to use (you may also need to adjust $gap to be the minimum distance you can print two things next to each other without them sticking together). Either print the two copies in different colors, or paint one or both in different colors. I printed in white ABS and painted one copy with black nail polish. It may be necessary to sand the bottom of some pieces to get them to stand upright.