Tactic 0190

[Event "3rd NH Chess Tournament"]
[Site "Amsterdam NED"]
[Date "2009.08.29"]
[Round "8"]
[White "Caruana, F."]
[Black "Nielsen, PH."]
[Result "1/2-1/2"]
[EventDate "2009.08.20"]
[Annotator "JB"]
[SetUp "1"]
[FEN "5r1k/4Q3/1p1p3p/8/3P1q1P/3b2p1/PP4P1/2R3RK b - - 0 28"]

{Black to move, white just played Rg1. }
{Second best is Ba6 (0.00), best is Be4 (-0.66) }
1... Be4
2. Rcf1 {The threat is Bxg2+, for example: }
(2. d5 Bxg2+
3. Rxg2 {Kxg2 is worse: }
(3. Kxg2 Qf2+
4. Kh3 Rg8 {Threatening mate. }
5. Qf6+ Qxf6
)
3... Qxc1+
)
2... Qxf1
3. Qxe4 Qf4
4. Qxf4 Rxf4
5. Rd1 Rf2
6. a3 Rxb2
*