Related to Open Problem #1:
Logic
Level
2
Its white's turn.
White have to checkmate the black king in moves. Is it possible for white? Assume optimal play from both sides.
Yes
No
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1 solution
1. Ra4+, Kc5
2. Qa5+,Qb5
3. Ba3 MATE
OR
1. Ra4+, Kb3
2. Qb4+, Kc2
3. Qb2 MATE