Tactic 0042

[Event "ICC Blitz"]
[White "Blunderbucket"]
[Black "jbennett"]
[Result "*"]
[Annotator "JB"]
[SetUp "1"]
[FEN "6k1/8/2bR3p/2P2pp1/p7/4B2P/5P1K/6r1 b - - 0 41"]

{Black to move, white just played Kh2. }
{Second best is Rh1+ (0.00), best is Rg2+ }
1... Rg2+ {Rh1+ leads to a perpetual check, with 2. Kg3 Rg1+ 3. Kh2, }
{but black can do better. }
2. Kh1 Bf3 {Move the bishop to a safe square before }
{using the discovered check. }
3. c6 Kh7 {The discovered check isn't going away. }
4. c7 Rxf2+ {Now we have to use it. }
5. Kg1 Rg2+
6. Kf1 Rc2
*