Orthochess

Problems of this sort have been exhaustively dealt with for orthochess (see A Guide to Fairy Chess, p. 39, for tables of results); Haas here presents 59 positions showing his best results for all possible moves, type A.

Avalanche chess is the same as orthochess, except that every move consists of two parts: (1) a normal legal chess move; and (2) pushing an opponent's pawn one square straight toward you. That's all there is to it really.

In consequence, Italian domination of Progressive Chess was for many years comparable to that of Soviet domination of orthochess in times past.