🕸Fergus Duniho wrote on Mon, May 4, 2020 11:28 PM UTC:
What the two versions of Fusion Chess taught me is that there are multiple ways of handling complications due to multiple pieces being affected by being attacked. With that in mind, I propose keeping the definitions of attack simple but adding a footnote for the complications that may arise in some games. So, here is what I propose:
1. A piece is attacked (or under attack) when the opponent has a piece that could legally capture it on his turn.*
2. A space is under attack for a particular piece when moving there without any other changes to the position would allow an enemy piece to legally capture it on the next move.*
3. Colloquially, "to attack" can also mean to play a move that creates one of the above situations.
* In games in which multiple moves are allowed or in which the state or threat of being attacked affects the movement of multiple pieces, the determination of whether a piece is attacked can become less straightforward. When this happens, it is up to the designer to spell out in detail what does and does not count as an attack.
What the two versions of Fusion Chess taught me is that there are multiple ways of handling complications due to multiple pieces being affected by being attacked. With that in mind, I propose keeping the definitions of attack simple but adding a footnote for the complications that may arise in some games. So, here is what I propose:
1. A piece is attacked (or under attack) when the opponent has a piece that could legally capture it on his turn.*
2. A space is under attack for a particular piece when moving there without any other changes to the position would allow an enemy piece to legally capture it on the next move.*
3. Colloquially, "to attack" can also mean to play a move that creates one of the above situations.
* In games in which multiple moves are allowed or in which the state or threat of being attacked affects the movement of multiple pieces, the determination of whether a piece is attacked can become less straightforward. When this happens, it is up to the designer to spell out in detail what does and does not count as an attack.