The formula
Explore one material
Material on the board
Design a different game
What if chess had more piece types, more copies of each, or a different board? Change anything below and the whole page, including the formula, the board and the totals, recalculates for your game.
| Letter | Piece | Per side | Pawns promote to it | Remove |
|---|
Each side always has one king. Pawns can stand on any square except the first and last ranks.
Choosing which pieces are left
Before any squares are chosen, the bound needs to know which pieces can still be on the board. Ignore kings, pawns and promotions for a moment. Each column below is one kind of piece in the current game, for both colours. Click a cell to choose how many of that piece remain; click the top kept cell again to remove one.