Tsarouhas, Konstantinos - Mastrovasilis, Dimitrios
GRE Team Ch 37th
[2009.07.05]
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39. ... f5! Another good defensive set up is attributed to the German GM Robert Huebner. It is similar to the Classical one, the only difference is that the f pawn is advanced two squares forth, in order to secure quick trades. It is very effective, especially if you have an active rook which keeps the opponent's king busy. 40.Kf3 Rb4 41.Rd6

[ Check is naturally answered: 41.Ra7+ Kf6 ]
41. ... Kf7 42.Rd4 White intends to advance his king on the weakened black squares, but... 42. ... Rb2! A key move, which does not allow the king abandon the f pawn. 43.e4
[ 43.Kf4 Rxf2+ 44.Ke5 Rf3 loses more than one pawn. ]
43. ... fxe4+ 44.Rxe4 The trade of the f5 for the e4 is extremely desirable for the defender, especially if the opponent does not create a passed pawn. Now the pawn scheleton is excellent for Black (he is ready for further trades), and this position is in fact known as a theoretical draw. 44. ... Kf6 45.Rc4
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