1.e4...This was an instructive game, showing the constant interplay between pawn structure and piece activity.1....c52.Nf3e63.b3Nf64.e5Nd55.Nc3!?Nc7?A double sin: Black falls behind in development, and places his knight on a poor square.5...Nxc36.dxc3would open the d-file to White's benefit.5...Nc6is probably best. Black never fears6.Nxd5exd5, since ... d7-d6 will soon undouble Black's pawns.6.Bb2Be77.Ne4O-O8.c4?!...8.d4!cxd49.Qxd4Nc610.Qd2leaves White much better.8....Nc69.Be2Ne8!?9...b610.O-OBb7is more natural.10.O-Of510...b6!?is perhaps stronger.11.exf6...Justifying Black's play.11.Nxc5!Bxc512.d4Be713.d5would put Black under serious pressure. He should give back the piece withNxe514.Nxe5d615.Nd3e5, but after16.f4!e417.Ne1!(with the idea of Nc2-e3) he remains strategically worse.11....Nxf612.Ng3Qc713.d4cxd414.Nxd4Nxd415.Qxd4d6?A poor structural decision. Black should keep the pawns on d7 and e6 and try to compensate his structural weaknesses with active piece play.15...b6!was indicated.16.Rad1e517.Qd2Be618.Bf3...White rushes to exploit the newly-weakened d5-square.18....Rad819.Ne4Kh820.Nxf6Rxf621.Bd5Rdf822.Bxe6Rxe623.Qd5Rg624.c5?!...Radically changing the character of the game, sacrificing White's static advantage for a temporary initiative. I would have preferred to build up the position slowly.24.Bc1!?comes to mind, bringing the bishop to e3. Then White will triple on the d-file and advance on the queenside; only after that will moves like c4-c5 come into consideration.24....h5?There is no hope for a kingside attack, so this move only ends up weakening Black's position.24...dxc5!25.Bxe5Qc8White's pieces are more active, but Black has no more structural worries and can hope to gradually equalize the position.25.cxd6Bxd626.Rc1...26.Rd2!is more accurate.26....Qe726...Qf7!Black does not mind transposing into an endgame.27.f4!?...A sharp move, which is immediately rewarded.27.Rfe1Qg528.g3is a more patient approach.27....exf4?After being on the defensive for a long time, Black blunders.27...Qe6!is fine for Black.28.Qxh5+Rh629.Qxh6+!...Black must have missed this move. The pin reigns supreme.29....Kg830.Bxg7!Qxg731.Qxd6Rf632.Rc8+Kh733.Qd3+Qg634.Qxg6+Kxg635.Rc4Kg536.Rcxf4Rxf437.Rxf4Kxf438.h41-0 White wins.1-0