[Event "?"]
[Site "ZSG_4480"]
[White "Nieuwe partij invoeren"]
[Black "?"]
[Result "*"]
[FEN "6k1/ppp1qppp/2n4r/8/3Pr3/P2QP1P1/1P2B2P/2R2RK1 w - - 0 20"]

20. Rf3 *