Homayoun Mohtaat - Rolinde den Heijer (board 5)
analysis: Homayoun Mohtaat

1.d4 d5 2.Nf3 Nf6 3.g3 Realizing that I got a young aggressive opponent, I opted for a delayed Catalan setup (delaying c4 for a couple moves) to keep the position more closed with less tactical opportunities. 3...e6 4.Bg2 c5 Now with my opponent entering the sharp Tarrasch set up, unlike my plan, the play becomes more open and tactical. Practice has shown that the Bg2 fianchetto system is very strong against the Tarrasch opening. Now, black gets an isolated pawn on d5 that she has to play accurately to defend. 5.c4 Nc6 6.cxd5 exd5 7.0-0 Be7 8.Nc3 cxd4 9.Nxd4 0-0 Here I thought for a long time to draw up a plan on how to pressurize the black position. I was looking at ideas like Bg5, but then Ne4 kind of discouraged me as it gave black counterplay. I was also looking at Be3, but finally decided on the Qa4 move. This move forces black to make an immediate decision on how to defend d5. 10.Qa4 Qb6 11.Be3 Qxb2 I had calculated up to this point that if I capture on c6 and threatening her rook on a8, she has the strong resource Bb7 that will give her dynamic game and enough compensation for the pawn, so that is why I went for the safer option. 12.Nxd5 Nxd5 13.Bxd5 Qb4 14.Bxc6 bxc6 15.Qxc6 Rb8 The dust is settled now. Black for a pawn enjoys the pair of bishops in an open position. True I have a pawn, but I have some light square weaknesses around my king. But, when I gave up my light square bishop, I knew that as long as I could keep my pawn on e2, black would have difficulty in penetrating my kingside with her queen and bishop. But still, I am enjoying an extra pawn and also pressure against another pawn on a7. 16.Qc7 Rb7 17.Qc2 Bf6 18.Rab1 Qd6 19.Nb5 Qd5 20.Rfd1 Qh5 21.Nxa7 Now I have the advantage of two extra pawns, but the position is open and dynamic and the black bishop pair and open files and diagonals still pose some threats to my position. Here as I mentioned in my previous note I devised to mini-strategies: 1. to exchange as many pieces as possible 2. to keep the pawn on e2 defended as much as possible, as it is the key to my kingside defense. 21...Bf5 22.Qc5 Rxb1 23.Rxb1 g6 24.Re1! This quiet move actually wins the game in my opinion and is machine's first choice too. I was elated that my evalation of a strategic concept allowed me to find this subtle move. 24...Qg4 25.Qd6 Bc3 26.Bh6 Here I had to briefly see that on Ra8 I have Qc6 and on Bb4 I have Qf6 with deadly threats. 26...Bg7 27.Bxg7 Kxg7 28.e4 Now this pawn finally lunges forward and is the best move for one reason: it brings black's bishop to a vulnerable e6 square where I can threaten its exchange by a knight maneuver, secondly I saw that now I always have Re3 to repel black's queen attemps to stay close to my king for a possible Bh3 attacking maneuver. 28...Be6 29.Qd4+ Kg8 30.a3 Qf3 31.Nc6 h6 32.Re3 Qh5 33.Ne7+ Kh7 34.Nd5 Now after the exchange of the last minor pieces, I am left with two extra pawns and a safe king and the conversion did not seem too difficult to achieve. 34...Bxd5 35.Qxd5 Qg4 36.Kg2 h5 37.h3 Qc8 38.Rb3 Kg8 39.Rb6 Kh7 40.a4 Qc3 41.h4 Kg8 42.Rb7 Qf6 43.a5 Rc8 44.Rb6 Qe7 45.Rxg6+ *