24 May, 2015

Endgame Queens

This isn't a difficult problem, but I believe I solved it without thinking why it worked.

A few minutes thinking about it afterwards has, I hope, cemented the reasons behind it, which are not just the threat of checkmate from White, but equally avoiding the checks from Black.

White to play
Solution if required [ 1.Qc3 Qb7 2. Qa1