A new chess variant has seen the light of day!
Combo Chess is invented by IM Silas Esben Lund. It follows the rules of classical chess, but with the addition that 2 pieces can be merged on a square and their powers added up.
Download this PDF Brochure and read all about the rules and the notation. You can also enjoy my annotations to the first official game of Combo Chess. The above position is from that game.
Furthermore, go to this page to try to solve 6 Combo Chess puzzles. Solutions are added too.