(Note: I have edited my answer below to improve the example.)
You make an excellent point, H.G. I will adjust the rule for threefold repetition to state that the positions are only considered equivalent if the entire state of the game is the same (e.g. if a position occurs half-way through a two move turn for Black and the same position is repeated later at the start of a turn for Black, those two positions would not be considered equivalent).
Your second point is thought provoking. The existence of the threefold repetition rule in international chess does provide a target for a player who is behind to still achieve a draw. My goal with Two Move Chess is to alter the game as little as possible while eliminating (or at least reducing) White's first move advantage, so I think we need to keep the rule.
(Note: I have edited my answer below to improve the example.)
You make an excellent point, H.G. I will adjust the rule for threefold repetition to state that the positions are only considered equivalent if the entire state of the game is the same (e.g. if a position occurs half-way through a two move turn for Black and the same position is repeated later at the start of a turn for Black, those two positions would not be considered equivalent).
Your second point is thought provoking. The existence of the threefold repetition rule in international chess does provide a target for a player who is behind to still achieve a draw. My goal with Two Move Chess is to alter the game as little as possible while eliminating (or at least reducing) White's first move advantage, so I think we need to keep the rule.
Thanks.
Ted