Changing the shape of the board can have unfortunate consequences - in Omega Chess endgames a Rook is not always sufficient mating force. That problem does not occur on Gustav III's board, however. In fact very little seems to have changed here for Knights and Bishops and Rooks.
White K(b3), N(c2), N(e1)
Black K(i1)
In this position White (to move) mates in 2 moves. This shows that a lone King may blunder into a quick checkmate by two Knights. But, in general, checkmate cannot be forced by a pair of knights. The same situation holds on the standard 8x8 board.
Changing the shape of the board can have unfortunate consequences - in Omega Chess endgames a Rook is not always sufficient mating force. That problem does not occur on Gustav III's board, however. In fact very little seems to have changed here for Knights and Bishops and Rooks.
White K(b3), N(c2), N(e1)
Black K(i1)
In this position White (to move) mates in 2 moves. This shows that a lone King may blunder into a quick checkmate by two Knights. But, in general, checkmate cannot be forced by a pair of knights. The same situation holds on the standard 8x8 board.