External Link: Doublecannon Chess

The Doublecannon slides like a rook. Following the orthogonal move, it can make a capture by jumping diagonally over a piece of any colour, and land on an enemy piece positioned anywhere on the diagonal behind the jumped piece, provided that any intermediate squares are empty. The jump is performed in the prolonged movement direction only (two direction alternatives). While the Doublecannon slides along an orthogonal, several diagonals (in the prolonged movement direction) could be chosen. This makes it a quite dangerous cannon piece. The Doublecannon's value is 4, that is, between bishop and rook (preliminary estimate). The tactical capability of this piece is breathtaking. It is much more valuable than the Chinese Cannon. Therefore it is easily integrable with the powerful pieces of the Western piece set. Doublecannon Chess is played on a 68-square Gustavian board, with four extra corner squares. A Zillions program and more information is here.

External Link: http://www.two-paths.com/bg/doublecannon.htm

Last revised by H. G. Muller.