Solved it. Very nice twin. I, too, agree with transference of BTB powers. I am sure a two-solution setting could…
About castling and the 50-move rule: There was a time when castling would restart the count. Later, the FIDE rules…
Maybe Popeye accepts the null move here, because it involves a capture. To what level does that make a difference?…
Dmitri has given the genuine motivation for the existence of the rule. Unfortunately, the formulation of the rule is not…
Dmitri, maybe you are right, I don't know. But then, any pawn move in Phantom chess has the potential of…
On that, it would be interesting to see if switching the two conditions' order on the Condition row finds the…
Interesting, white does take a pass, in effect a null move, on his first. I suppose one could debate the…
Popeye finds the solution for the following: White Kc6 Pc4 Qa2 Pc2 Black Ka4 Bb4 Qa3 Bb3 Stipulation H#2 Condition…
A null move by a pawn is still a pawn move and restarts the count. A move (null or not)…
Allowing null moves opens up other questions. One is the 50-move draw rule (50 moves without a pawn move or…