[Event "Groningen"] [Site "?"] [Round "0"] [White "Steiner"] [Black "Botvinnik"] [Result "0-1"] [ECO "A40"] [Opening "Queen's Pawn: 1...e6 2.c4"] 1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 Bb4+ 5. Bd2 Be7 6. Nc3 O-O 7. Qc2 d5 8. Nf3 c6 {The Stonewall Dutch is a fighting opening for Black, who slowly transfers pieces to the kingside and then attacks.} 9. O-O Qe8 10. Bf4 Qh5 11. Rae1 Nbd7 12. Nd2 g5 13. Bc7 Ne8 { The bishop is an important defender of the kingside, so it must be eliminated.} 14. Be5 Nxe5 15. dxe5 f4 {Now the dark squares are more vulnerable. Notice the importance of Black's pawn at d5, which controls the e4-square so that it cannot be used by the White knights.} 16. gxf4 gxf4 17. Nf3 Kh8 { The g-file is needed for rooks.} 18. Kh1 Ng7 19. Qc1 { If 19.e4 then 19...fxe3 20.fxe3 Nf5 21.Qf2 Rg8 22.Ne2 Qh6} 19... Bd7 20. a3 Rf7 21. b4 Rg8 22. Rg1 Nf5 23. Nd1 {23.Qxf4 Ng3+ 24.fxg3 Rxf4 25.gxf4 Be8} 23... Rfg7 24. Qxf4 {24.Bf1 Qxf3+ 25.exf3 Rxg1++} 24... Rg4 25. Qd2 Nh4 {The knight t f3 is the key to White's defense. By eliminating it, Black secures the victory.} 26. Ne3 Nxf3 27. exf3 Rh4 28. Nf1 Bg5 {Botvinnik wa s convinced that this victory was due to Denker's lack of understanding of the ideas of the Dutch Defense, and this game stands as a model of appropriate play by Black.} 0-1