Print the pieces with spiral vase mode enabled, as well as sequential mode. In each color, you'll need:
Print the bases with no top, no infill, and 0.6mm of total bottom thickness. Use sequential mode and a total wall thickness of 1.2mm.
You'll need 4 bases in each color. Glue 2 pennies inside each base. Glue the sage, fool, and couriers on top of the pennies.
Combine this expansion set with the standard set of Chessmen in Spiral Vase Mode or with whatever standard chess set you already have.
Now all you need is an 8x12 checkerboard, and you're ready to play the extra-wide 12th-century game of Courier Chess! Or the 1821 variant, Courier-Spiel, if you prefer.
The author remixed this model.
I combined the pieces in sequential-mode prints.