Chisel decorative, easy to move chess pieces out of etched (patterned) tarstone and cloudstone.
Playing chess itself is currently almost entirely manual; no chess engines, rules, or other aids are programmed into the mod. The pieces can be used for anything: playing chess on a server, setting up chess puzzles, or just as decoration. Board design/building is left entirely up to the players.
Placing a chess piece atop any other (placed) piece will "capture" that piece: the new piece replaces the original one, and the original piece is put into the capturing player's inventory (or ejected above if there is no room).
Uncanny yet useful mod
The peices clash very uncannily with the nodecore world, but on the bright side, at least they allow you to play the game of chess without having to create a copious amount of tools to represent the set peices, overall its a good quality of life mod even if the respective peices can be a bit jarring.