In an unusual queen pawn game where neither player ever pushed their c pawn both sides had doubled d pawns. After 3 of the 4 d pawns were liquidated Black threatened a pawn fork on d4 with the last d pawn. White blundered an exchange in an effort to stop this pawn fork on move 22. Black proceeds to trade off a pair of rooks and queens to establish a won exchange up endgame. White missed one final knight fork on move 42 that would have turned the tables. Up 2 pawns and the exchange Black pushes his h pawn for a decisive touchdown.

1.d4 Nf6 2.Nc3 d5 White's queen knight is blocking the advance c2-c4, so therefore black move controls the e4 square. 3.Bf4 Nc6 Developing the knight here does not allow black to strike at the center with c7-c5 and it allows white to have a cheap attack on the c7 square with Nb5. 4.Nf3 [4.Nb5 e5 5.dxe5 a6 6.Nc3 Ng4 7.Nxd5 White wins a central pawn as a result of the attack on the c7 square.] 4...Bf5 5.e3 Nb4 White has 2 other ways to stop the c2 fork by Black. Bb5+ followed by Ba4 or simply Rc1. Rc1 would be better because if black trades on c2 the 2 minor pieces are more useful in the middle game than a rook. 6.Bd3 White doubles his d pawns to stop Black's fork on c2. Black has a slight advantage now. 6...Nxd3+ 7.cxd3 e6 8.0-0 Bd6 9.Re1 0-0 Black should capture on f4 and leave white with isolated double d pawns. 10.Bxd6 cxd6

Q:d6 to keep a better pawn structure is not possible because of the pawn fork maneuver e4 following by e5. 11.e4 Bg4 12.h3 Bh5 13.Rc1 dxe4 14.dxe4 d5 15.Qd3 White should advance e5 to avoid having an isolated d pawn. 15...Rc8 [15...dxe4 16.Nxe4 Nxe4 17.Qxe4 not Rxe4 then Bg6 wins the exchange. 17...Bxf3 18.Qxf3 Qxd4 wins the isolated d pawn immediately.] 16.e5 Nd7 17.g4 Bg6 18.Qd2 f6 19.Re3 [19.exf6 Rxf6 20.Qe3 White will keep slight advantage by controlling e5 square.] 19...fxe5 20.dxe5 Nb6 Black threatens a knight fork on c4. White pushes pawn to stop it. 21.b3 Rf4

Black is threatening the pawn fork d4. White should block the d4 square with Nd4. 22.Rd3 Bxd3 Qf8 to keep up pressure on f file is a little stronger here. 23.Qxd3? White blunders the exchange. Qxf4 holds the material balance. 23...d4 24.Ne2 Rxc1+ Up in material, Black wisely forces more trades. 25.Nxc1 Qd5 26.Nd2 Ng5 would cause black some problems. [26.Ng5 g6 ( or 26...Qxe5 27.Qxh7+ Kf8 28.Qh8+ Ke7 29.Nd3 Qxg5 30.Nxf4 Qxf4 31.Qxg7+ Ke8 32.Qxb7 d3 black is winning but his king is not safe from checks. ) 27.Ne2 Rf8 28.Qxd4] 26...Qxe5 27.Nf3 Qd5 28.Nd2 Qc5 29.Ne2 Rf7 30.Qxd4 Qxd4 Black gladly trades queens while ahead in material. 31.Nxd4 e5 32.N4f3 e4 33.Ne1 Not Nxe4 Rxf3. More defense would be provided for white with Ng5. [33.Ng5 Rc7 34.Ngxe4 Rc2 35.a3 Nd5 36.Kg2] 33...Re7 34.Kg2 Nd5 35.Kg3 g5 36.Ng2 e3 Black forces more trades. Soon his exchange advantage will be decisive. 37.Nxe3 Nxe3 38.fxe3 Rxe3+ 39.Kf2 [39.Nf3 Rc3 White does not have any good moves. 40.Kf2 h6 41.h4 gxh4 42.Nxh4 Rc2+ wins the a pawn.] 39...Rxh3 40.Ne4 Rd3 With h6 black could avoid pawn trades and still win one of white's queenside pawns. 41.Ke2 Rd5?

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