Another puzzle for an easy Reitstein day

Black to play and win

S Ernst v PH Nielsen 2005

Solution

I failed with this one, or at least didn't find the very best solution. I chose 1…Qa7! with the point being that once the rook moves, the queens are exchanged, and the Ne4 is then LPDO. However, I missed the defence 2 Rd6 (I shouldn't have, but was bamboozled by the difficulty of the position) when in fact black is still winning, 2…Rb8 3 Qa7 Ra7 and mops up, slowly. But in the game, black played the far stronger, similar idea, 1…Be4! when everything works: I had missed that from a7 the queen also looks at f2- so 2 Qe4[] Qa7! 3 Qc6 Ra1 and the queen is overloaded: it can't defend both rooks, and given that there is a back rank threat, the Rb6 drops off.

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