A lovely problem....
As one commentator at ChessTempo remarked, the tactic is so simple to see, but it doesn't work.
The trick ( or perhaps more accurately, the skill ) is to find the moves that make it work !
A recent purchase ( Nieman - "Chess Tactics Antenna" ) would classify this as either "Unprotected Piece" or more likely "Alignment", two of the 'Seven Signals' that he uses to describe patterns/situations that should trigger your 'tactics antenna'.
White to play |