[Event "Germany, 2013"] [White "Sebastian Siebrecht"] [Black "Gawain Jones"] [FEN "r2B1bk1/1p5p/2p2p2/p1n5/4P1BP/P1Nb4/KPn3PN/3R3R b - - 0 1"] %Hidden=1 1... Nb4+ 2. axb4 axb4+ 3. Ba5 Rxa5+ 4. Na4 Rxa4#