Thanks Ben for the questions, here it should be clearer in the description (although it is already described between the lines, but that is probably not enough).
When capturing on a switch, first assume that there can be only one piece on a switch (here I differ from Fergus Duniho's Reroute66, a variant of my idea). So, for example, if a rook or queen starts from a1...a3 or from rank 4 and the switch is not occupied, then either square 4 or square a4 can be occupied in the switch.
But there is no choice if the switch is occupied by a piece. If a rook or a queen moves from a1...a3 or from rank 4 into the switch, then the piece in the switch must be captured (because two pieces on the switch are not possible). If the piece was on square 4, then the opponent's piece is on square 4 after the move has been executed (applies to a4 in the same way).
Furthermore, an occupied switch cannot be jumped over and a direct change from 4 to a4 (vice versa a4 to 4) is not possible - differently in Reroute66.
Have I understood the question correctly and hopefully answered it correctly? I would be glad.
Thanks Ben for the questions, here it should be clearer in the description (although it is already described between the lines, but that is probably not enough).
When capturing on a switch, first assume that there can be only one piece on a switch (here I differ from Fergus Duniho's Reroute66, a variant of my idea). So, for example, if a rook or queen starts from a1...a3 or from rank 4 and the switch is not occupied, then either square 4 or square a4 can be occupied in the switch.
But there is no choice if the switch is occupied by a piece. If a rook or a queen moves from a1...a3 or from rank 4 into the switch, then the piece in the switch must be captured (because two pieces on the switch are not possible). If the piece was on square 4, then the opponent's piece is on square 4 after the move has been executed (applies to a4 in the same way).
Furthermore, an occupied switch cannot be jumped over and a direct change from 4 to a4 (vice versa a4 to 4) is not possible - differently in Reroute66.
Have I understood the question correctly and hopefully answered it correctly? I would be glad.