Avast! This be another puzzle that's recently had suggestions for it. Mine be below. Smithing will be accessable by clicking on the anvil at the Ironmonger, and is needed to produce cannonballs of all sizes, and all of those shiny swords yer pirate may use.

Here's a puzzle idea myself and a few other pirates drafted on the forums.

Coals gradually heat pieces around them to a hotter temperature, and these hot pieces in turn heat other pieces around them to a slightly lower temperature. As the whole board heats up there's a risk of explosion.

Seeing there's a certain limit to the amount of tokens you can remove, the objective is to try and "merge" as large a group as possible, without exploding it and without attaching too many scrap pieces.

Not shown here is that when you've got scrap pieces attached to your slab, and move in a gold piece, it destroys the scrap, and vice versa for the opposite situation.

Although explosions warm a large amount of nearby pieces very hot, they also remove coals, which can end your puzzle prematurely with less than the (100?) piece limit. Uncontrolled explosions are the easiest way to booch this puzzle.