11 ... Bd7 ? 11 ... g6 was necessary here .
12 . Rxf6 ! Bxf6 13 . Qh5 Re8 14 . Bh7 + Kh8 15 . Nxf7 #
Emil Josef Diemer Stefan Weinmann Baden Baden , 1980
The BDG almost always lends itself to a quick kingside attack for White . This game is a good example of how White ’ s knights can wreak havoc in the BDG . Take note in this game how White ’ s knights have command of the board and are in complete control of the game .
1 . d4 Nf6 2 . Nc3 d5 3 . e4 dxe4 4 . f3 exf3 5 . Nxf3 g6 6 . Bc4 Bg7 7.0 – 0 0 – 0 8 . Qe1 b6 9 . Qh4 Qd7 10 . h3 Ba6 11 . Ne5 Qe8 12 . Bxa6 Nxa6 13 . Bh6 Nh5 14 . Bxg7 Nxg7 15 . Nd5 f6 ? 16 . Nc6
16 ... Rf7 ? 17 . Ncxe7 + Kh8 18 . Nxg6 + Kg8 19 . Nge7 + Kh8 20 . Nxf6 1-0
Charles Diebert John F . Burke US Amateur Team , 1987
1 . d4 Nf6 2 . Nc3 d5 3 . e4 dxe4 After Diemer breathed new life into the BDG with 3 . Nc3 , a veritable cornucopia of defenses emerged . Black steers clear of the Hubsch Gambit ( 3 … Nxe4 4 . Nxe4 dxe4 ) in order to keep an important defender on the board .
4 . f3 exf3 5 . Nxf3 e6 Black selects the Euwe Defense .
13
6 . Bg5 Be7 7 . Bd3 Nbd7 8.0 – 0 h6 9 . Bf4 c6 10 . Kh1 0 – 0 11 . Qd2 Re8 Black ’ s position is cramped ; his bishop on c8 , which is locked in by the pawns on e6 and c6 , looks particularly dismal . At the cost of a mere pawn , White has completed his development and his pieces have scope and mobility . This is a position that BDGers are born for .
12 . Bxh6 It doesn ’ t take much prompting for White to start sacrificing material in order to launch a swift and dangerous attack . Objectively , any computer worth its megabytes will rate this move as unsound , but that totally misses the swashbuckling spirit of the BDG .
12 … gxh6 13 . Qxh6 As with most BDG games , White has now come to the point of no return and must continue the attack by striking first before Black has a chance to consolidate his pieces and benefit from his huge material advantage .
13 ... Bf8 14 . Qh4 Bg7 15 . Ne5 Qe7 ? 15 ... c5 was Black ’ s last opportunity for counterplay as after 16 . Ne4 Nxe4 ( 16 ... cxd4 ? does not work because of 17 . Nxf6 + Nxf6 18 . Rf3 ) 17 . Qxe4 Nxe5 18 . dxe5 Qg5 not only has White ’ s attack dissipated , he is down material and must defend against numerous threats .
16 . Rf3 Nf8 16 … c5 now would not work because 17 . Rg3 Ne4 18 . Qxe4 f5 19 . Qf4 cxd4 20 . Qxd4 Qc5 21 . Qxc5 Nxc5 22 . Bc4 Kf8 23 . Ng6 + Kf7 24 . Rf1 Bxc3 25 . Rxf5 + wins .
17 . Rh3 c5 18 . Rf1 cxd4 19 . Rff3 White intuitively presses on with his attack knowing his positional advantage is his only chance to secure the win .
19 ... dxc3 ? Objectively , Black must forego winning more material and concentrate on keeping the position as level as possible with 19 ... Ne4 20 . Qxe4 dxc3 21 . Qh7 + Nxh7 22 . Bxh7 + Kh8 23 . Nxf7 + Qxf7 24 . Bg6 + Kg8 25 . Bxf7 + Kf8 26 . Bh5 + Ke7 27 . Rf7 + Kd6 28 . Rd3 + Ke5 29 . Rxg7 cxb2 and although White still has an advantage , his initial attack has been repelled .
20 . Rfg3 Ng6 21 . Bxg6 Qd6 22 . Bd3 Not 22 . Bxf7 +? because the pawn is poisoned and after 22 ... Kf8 23 . Re3 cxb2 leads to a winning position for Black .
22 ... Kf8 23 . Qg5 Ng4 ? If 23 … Ke7 24 . bxc3 Rh8 and Black can at least play on .
24 . Ng6 Black must have been hoping to swindle White into playing 24 . Nxg4 ?? when capturing this knight would cost White the game after 24 ... cxb2 25 . Rf3 b1 ( Q )+ 26 . Rf1 Qxf1 + 27 . Bxf1 e5 and Black ’ s material advantage should be enough to win .
24 ... fxg6 ?? This move opened the floodgates . 24 … Kg8 would have been no better as the science of computer technology shows us 19 forced moves leading , mercifully , to checkmate : 24 ... Kg8 25 . Rxg4 cxb2 ( 25 ... fxg6 ?? leads to instant demise in 4 26 . Qxg6 Qxh2 + 27 . Rxh2 Re7 28 . Rh8 + Kxh8 29 . Qh7 #) 26 . Rh8 + Bxh8 27 . Nxh8 + Kf8 28 . Ng6 + Kg8 29 . Ne5 + Kf8 30 . Qh6 + Ke7 31 . Qh4 + f6 32 . Rg7 + Kd8 33 . Nf7 + Kd7 34 . Nxd6 + Re7 35 . Qa4 + Kc7 36 . Qc4 + Kd8 37 . Rg8 + Kd7 38 . Qb5 + Kxd6 39 . Qb4 + Kd5 40 . Bc4 + Kc6 41 . Bb5 + Kd5 42 . Qc4 + Ke5 43 . Qc5 + Kf4 44 . Qd4 + Kf5 45 . Bd3 #.