Mongredien Chess

This variation is referred to as "Mongredien chess" after amateur chess master Augustus Mongredien. Augustus was the sponsor of a competition that was conducted in London in 1868 under the supervision of the British Chess Association and in which Joseph Henry Blackburne and other top British players at the time competed.

David Pritchard - British chess player and author of The Encyclopaedia of Chess Variants - claimed that this is one of the most popular variations of D-chess.