[Event "Chessmaster: Grandmaster Edition Rated Game"]
[Site ""]
[Date "2012.10.29"]
[Round ""]
[White "Anders"]
[Black "Ricardo"]
[TimeControl "600"]
[Result "1-0"]
[ECO " "]
1.d4 d5 2.c4 dxc4 3.Nf3 Nc6 4.e3 Nf6 5.Bxc4 Bg4 6.Qb3 e6 7.Bd2 Bd6 8.Qxb7 Rb8 9.Qxc6+ Nd7 10.Qa6 Nb6 11.Ne5 Bxe5 12.Bb4 Qd7
13.Bb5 c6 14.Bc5 cxb5 15.b3 Bd6 16.b4 e5 17.f3 exd4 18.fxg4 d3 19.Bxd6 Qxd6 20.Qxa7 Nd7 21.Kd1 Qe5 22.h4 Qxa1 23.Kd2 Qxa2+
24.Qxa2 Ke7 25.Qd5 Rhc8 26.Na3 Rc7 27.Kxd3 Rbc8 28.Ke2 Rc1 29.Rd1 Nf6 30.Qe5+ Kf8 31.Rxc1 Rxc1 32.Qd6+ Ke8 33.Nxb5 Rb1 34.Nc7#
1-0
Post Game Analysis
White wins!
Defeats happen... This is the first time Anders defeated you - why don't you try a rematch?
Superb fight, despite a sad ending for you. It was deserved, though - you haven't fully exploited your chances.
Game type: Disputed
Number of leadership changes: 2
Longest black leadership: 13
Opening used: Queen's Gambit / Accepted / Accepted 2.c4 dxc4 3.Nf3
Worst move: 23, Qxa2+, Decrease: 17.02
Suggested opponent: Kendra (rating 790)
Your rating decreased by 9 points and is now 667.
Your Blitz rating decreased by 9 point(s) and is now 667.
[Event "Chessmaster: Grandmaster Edition Rated Game"]
[Site ""]
[Date "2012.10.29"]
[Round ""]
[White "Anders"]
[Black "Ricardo"]
[TimeControl "600"]
[Result "1-0"]
[ECO " "]
1.d4
{Book.}
1...d5
{Book.}
2.c4
{Book.}
2...dxc4
{Book.}
3.Nf3
{Score: 0.25 3...Nf6 4.Nc3 c5 5.e3 cxd4 6.Bxc4 Nc6 7.exd4 Bf5 (Time = 0:04, Depth = 1/9)}
3...Nc6
{Score: 0.61 4.d5 Na5 5.Qa4+ c6 6.Bd2 b6 7.e4 Bd7 8.Ne5 e6 9.dxc6 (Time = 0:02, Depth = 1/10)}
4.e3
{Score: 0.35 4...Be6 5.Nc3 Nf6 6.e4 Bg4 7.e5 Nd5 8.Bxc4 e6 9.Nxd5 exd5 (Time = 0:04, Depth = 1/9)}
4...Nf6
{Score: 0.57 5.Bxc4 e6 6.O-O Bd6 7.Nc3 O-O 8.e4 e5 9.Be3 exd4 10.Nxd4 (Time = 0:05, Depth = 1/10)}
5.Bxc4
{Score: 0.57 5...e6 6.O-O Bd6 7.Nc3 O-O 8.e4 e5 9.Be3 exd4 10.Nxd4 (Time = 0:04, Depth = 1/9)}
5...Bg4
{Score: 0.74 6.Qb3 e6 7.Qxb7 Na5 8.Bb5+ c6 9.Bxc6+ Nxc6 10.Qxc6+ Nd7 11.Nbd2 Rc8 12.Qb7 Bd6 13.Qxa7 (Time = 0:04,
Depth = 1/10)}
6.Qb3
{Score: 0.73 6...e6 7.Qxb7 Bxf3 8.gxf3 Na5 9.Bb5+ c6 10.Bxc6+ Nxc6 11.Qxc6+ Nd7 12.O-O Rc8 13.Qb7 a5 (Time = 0:04, Depth
= 1/10)}
6...e6
{Score: 0.86 7.Qxb7 Nb4 8.Bb5+ Ke7 9.Ne5 Rb8 10.Nc6+ Nxc6 11.Qxc6 Rb6 12.Qc5+ Qd6 13.Nc3 Qxc5 14.dxc5 (Time = 0:07,
Depth = 1/10)}
7.Bd2
{Score: 0.25 7...Rb8 8.O-O Be7 9.Nc3 O-O 10.Be2 e5 11.h3 Be6 (Time = 0:04, Depth = 1/9)}
7...Bd6
{Score: 0.79 8.Qxb7 Bxf3 9.gxf3 Ne7 10.O-O Rb8 11.Qxa7 Rxb2 12.Qa4+ c6 13.Bb3 (Time = 0:03, Depth = 1/9)}
8.Qxb7
{Score: 0.81 8...Bxf3 9.gxf3 Ne7 10.Qa6 c6 11.Nc3 Qb6 12.O-O-O Qxa6 13.Bxa6 O-O (Time = 0:03, Depth = 1/9)}
8...Rb8
{Score: 4.40 9.Qxc6+ Kf8 10.Bc3 Rb6 11.Qa4 Bxf3 12.gxf3 Nd5 13.Qxa7 Nxc3 14.bxc3 (Time = 0:03, Depth = 1/9)}
9.Qxc6+
{Score: 4.40 9...Kf8 10.Bc3 Rb6 11.Qa4 Bxf3 12.gxf3 Nd5 13.Qxa7 Nxc3 14.bxc3 (Time = 0:02, Depth = 1/9)}
9...Nd7
{Score: 4.67 10.Bc3 O-O 11.Nbd2 Nb6 12.O-O Nxc4 13.Nxc4 Qf6 14.Nfe5 (Time = 0:02, Depth = 1/9)}
10.Qa6
{Score: 3.48 10...Rxb2 11.Bb3 Bxf3 12.gxf3 Qa8 13.Rf1 O-O 14.Bc3 Rxb3 15.axb3 Qxf3 (Time = 0:03, Depth = 1/8)}
10...Nb6
{Score: 4.80 11.Bb5+ Nd7 12.Nc3 Rb6 13.Qxa7 c6 14.Ba4 Bxf3 15.gxf3 Rxb2 16.Bxc6 (Time = 0:03, Depth = 1/9)}
11.Ne5
{Score: 3.97 11...Bxe5 12.dxe5 O-O 13.Bb3 Nd7 14.Qxa7 Nxe5 15.O-O Rb6 16.Qa4 (Time = 0:04, Depth = 1/9)}
11...Bxe5
{Score: 3.97 12.dxe5 O-O 13.Bb3 Nd7 14.Qxa7 Nxe5 15.O-O Rb6 16.Qa4 (Time = 0:04, Depth = 1/9)}
12.Bb4
{Score: 0.54 12...Nxc4 13.Qxc4 Bd6 14.Bxd6 cxd6 15.f3 Bh5 16.Nc3 O-O 17.O-O-O (Time = 0:03, Depth = 1/9)}
12...Qd7
{Score: 1.23 13.Bd3 Bd6 14.Bxd6 Qxd6 15.O-O O-O 16.Qxa7 Bf5 17.Bxf5 exf5 (Time = 0:05, Depth = 1/9)}
13.Bb5
{Score: 0.95 13...c6 14.Be2 Bxe2 15.Qxe2 Na4 16.Ba3 Bd6 17.Bxd6 Qxd6 18.b3 (Time = 0:01, Depth = 1/9)}
13...c6
{Score: 0.98 14.Bd3 Nd5 15.Ba3 Bd6 16.O-O O-O 17.Nd2 Nb4 18.Qc4 Nxd3 19.Qxd3 (Time = 0:04, Depth = 1/10)}
14.Bc5
{Score: -1.09 14...cxb5 15.f3 Na4 16.b4 Nxc5 17.bxc5 Bxd4 18.exd4 Qxd4 19.Qd6 Qxd6 20.cxd6 (Time = 0:02, Depth = 1/9)}
14...cxb5
{Score: -0.96 15.f3 Na4 16.b4 Nxc5 17.bxc5 Bxd4 18.exd4 Qxd4 19.Qc6+ Kd8 20.Qd6+ Qxd6 21.cxd6 Bf5 22.Nd2 (Time =
0:05, Depth = 1/10)}
15.b3
{Score: -2.31 15...Rc8 16.b4 Nd5 17.f3 Nxb4 18.Bxb4 Rc1+ 19.Kf2 Rxh1 20.dxe5 (Time = 0:03, Depth = 1/8)}
15...Bd6
{Score: -1.36 16.Bxd6 Qxd6 17.Qxb5+ Kf8 18.Nd2 Qc7 19.O-O Nd5 20.Qd3 Qc3 21.Qxc3 Nxc3 22.Rfc1 (Time = 0:03, Depth =
1/10)}
16.b4
{Score: -2.77 16...O-O 17.Nc3 Bxc5 18.bxc5 Nd5 19.Nxd5 exd5 20.Qd6 Qb7 (Time = 0:04, Depth = 1/9)}
16...e5
{Score: -2.58 17.h3 Bh5 18.Na3 Nc8 19.Rc1 exd4 20.Bxd6 Nxd6 21.exd4 (Time = 0:04, Depth = 1/9)}
17.f3
{Score: -2.77 17...Bf5 18.Nc3 exd4 19.Rd1 Bxc5 20.bxc5 Qe7 21.Ne2 Qxc5 22.Qxa7 (Time = 0:04, Depth = 1/9)}
17...exd4
{Score: -2.40 18.fxg4 dxe3 19.a4 Bxc5 20.bxc5 O-O 21.cxb6 Rbd8 22.O-O e2 23.Nc3 exf1=Q+ 24.Rxf1 (Time = 0:03, Depth
= 1/9)}
18.fxg4
{Score: -2.67 18...dxe3 19.a4 Bxc5 20.bxc5 O-O 21.axb5 Rfd8 22.O-O e2 23.Re1 Qd4+ 24.Kh1 Qxc5 25.Qxa7 Qxb5 (Time =
0:03, Depth = 1/9)}
18...d3
{Score: -0.79 19.Nd2 O-O 20.O-O Bxc5 21.bxc5 Nd5 22.Rae1 Nc3 23.Qd6 Rbd8 24.Qxd7 Rxd7 (Time = 0:07, Depth = 1/10)}
19.Bxd6
{Score: -1.05 19...Qxd6 20.Nd2 Qxb4 21.Rb1 Qc3 22.Qxa7 O-O 23.Rf1 Nc4 24.Rf2 Nxd2 25.Rxd2 (Time = 0:03, Depth = 1/10)}
19...Qxd6
{Score: -1.01 20.Qxb5+ Nd7 21.Qg5 Qxb4+ 22.Nd2 O-O 23.Rd1 Rb5 24.Qf4 Qxf4 25.exf4 Re8+ 26.Kf2 Rb2 (Time = 0:05,
Depth = 1/10)}
20.Qxa7
{Score: -2.12 20...Qxb4+ 21.Nd2 O-O 22.a3 Qb2 23.Rd1 Nc4 24.Rf1 Rbe8 25.Rf3 Qc2 (Time = 0:03, Depth = 1/10)}
20...Nd7
{Score: 0.35 21.Qd4 Ke7 22.Nc3 Rhc8 23.Kd2 Ne5 24.Rhf1 Rd8 25.Rf5 f6 (Time = 0:04, Depth = 1/10)}
21.Kd1
{Score: -5.99 21...Qc6 22.Na3 Qxg2 23.Re1 Qxg4+ 24.Kd2 Qg2+ 25.Kd1 d2 26.Re2 Qh1+ 27.Kxd2 Qxa1 28.Nc2 Qe5 (Time = 0:03,
Depth = 1/11)}
21...Qe5
{Score: -0.39 22.Qd4 O-O 23.Nd2 Qe6 24.Rf1 Nf6 25.Rf5 Rbd8 26.Qf4 (Time = 0:01, Depth = 1/9)}
22.h4
{Score: -12.06 22...Qxa1 23.Qc7 Qxb1+ 24.Qc1 Qxa2 25.Qd2 Qb1+ 26.Qc1 Qxb4 27.Qd2 Qxg4+ 28.Kc1 Rc8+ 29.Kb1 Qe2 30.Rd1
Qxd2 31.Rxd2 (Time = 0:03, Depth = 1/11)}
22...Qxa1
{Score: -15.21 23.Qc7 Qxb1+ 24.Qc1 Qxa2 25.Qd2 Qa1+ 26.Qc1 Ra8 27.Rh3 Qa2 28.Qd2 Qb3+ 29.Ke1 Ra1+ 30.Kf2 Rd1 31.Qxd1
Qxd1 (Time = 0:05, Depth = 2/12)}
23.Kd2
{Score: -14.25 23...Qb2+ 24.Kxd3 Rd8 25.Qd4 Ne5+ 26.Ke4 Rxd4+ 27.exd4 Qe2+ 28.Kd5 Nd7 29.Kc6 Qxg2+ 30.Kxb5 Qd5+ 31.Ka6
Qxh1 (Time = 0:02, Depth = 1/9)}
23...Qxa2+
{Score: 4.65 24.Qxa2 O-O 25.Kxd3 Ne5+ 26.Ke2 Nxg4 27.Nc3 Rfe8 28.Nd5 Rbc8 29.Rf1 (Time = 0:01, Depth = 1/10)}
24.Qxa2
{Score: 4.67 24...Ne5 25.Qd5 Nc4+ 26.Kc3 O-O 27.Qxd3 Rfc8 28.Kb3 Re8 29.e4 Rbd8 30.Qe2 (Time = 0:04, Depth = 2/11)}
24...Ke7
{Score: 5.95 25.Qd5 f6 26.Na3 Ne5 27.Rc1 Rhe8 28.Nxb5 Red8 29.Rc7+ Kf8 30.Qe6 (Time = 0:05, Depth = 2/10)}
25.Qd5
{Score: 5.98 25...Rhd8 26.Rc1 Rb6 27.Rc7 Rg6 28.Qe5+ Kf8 29.Qxb5 Nf6 30.Qe5 (Time = 0:04, Depth = 1/9)}
25...Rhc8
{Score: 6.44 26.Nc3 Nf6 27.Qe5+ Kf8 28.g5 Ng4 29.Qf4 h5 30.gxh6ep Nxh6 31.Kxd3 (Time = 0:05, Depth = 1/9)}
26.Na3
{Score: 6.25 26...f6 27.Qxd3 Rd8 28.Ke2 g6 29.Qd4 Ne5 30.Qa7+ Nd7 31.Rd1 (Time = 0:05, Depth = 1/9)}
26...Rc7
{Score: 7.90 27.Nxb5 Rcb7 28.Rf1 f6 29.Nd4 Kf8 30.Nc6 Rc8 31.Qd6+ Kf7 32.Kxd3 (Time = 0:04, Depth = 2/10)}
27.Kxd3
{Score: 6.88 27...Rcb7 28.g5 f6 29.Ke2 Ne5 30.gxf6+ gxf6 31.Rd1 Kf8 32.Rf1 (Time = 0:04, Depth = 1/9)}
27...Rbc8
{Score: 10.16 28.Nxb5 Rc6 29.Ra1 Rc1 30.Qg5+ Nf6 31.Rxc1 Rxc1 32.e4 Rc6 33.e5 Kf8 34.exf6 Rxf6 (Time = 0:03, Depth =
2/10)}
28.Ke2
{Score: 7.21 28...Kf8 29.Nxb5 Rc2+ 30.Kf3 Nf6 31.Qf5 h6 32.Nd4 R2c3 33.Rd1 (Time = 0:05, Depth = 1/9)}
28...Rc1
{Score: 8.97 29.Rxc1 Rxc1 30.Qg5+ Ke8 31.Nxb5 Rc2+ 32.Kf3 Rc6 33.Qxg7 Rf6+ 34.Ke2 Rb6 35.Nc7+ Kd8 36.Nd5 (Time =
0:02, Depth = 2/10)}
29.Rd1
{Score: 7.71 29...Rxd1 30.Qxd1 h6 31.Nxb5 Rc6 32.Nd4 Rg6 33.Nf5+ Kd8 34.Qd4 h5 (Time = 0:02, Depth = 2/10)}
29...Nf6
{Score: 10.02 30.Qd6+ Ke8 31.Rxc1 Rxc1 32.Nxb5 Nxg4 33.Nc7+ Rxc7 34.Qxc7 Nf6 35.b5 Nd7 36.b6 Nxb6 37.Qb8+ Kd7 38.Qxb6
(Time = 0:03, Depth = 2/10)}
30.Qe5+
{Score: 7.88 30...Kf8 31.Qd6+ Ke8 32.Rxc1 Rxc1 33.Nxb5 (Time = 0:00, Depth = 1/2)}
30...Kf8
{Score: 10.02 31.Rxc1 Rxc1 32.Qd6+ Ke8 33.Nxb5 Nxg4 34.Nc7+ Rxc7 35.Qxc7 Nf6 36.b5 Nd7 37.b6 Nxb6 38.Qb8+ Kd7 39.Qxb6
(Time = 0:04, Depth = 2/11)}
31.Rxc1
{Score: 10.05 31...Rxc1 32.Qd6+ Ke8 33.Nxb5 Nxg4 34.Qb8+ Ke7 35.Qb7+ Kd8 36.Qd5+ Ke7 37.Qe4+ Kf8 38.Qxg4 Rc2+ 39.Kd3
Rc6 (Time = 0:02, Depth = 2/11)}
31...Rxc1
{Score: 10.48 32.Qd6+ Ke8 33.Nxb5 Nxg4 34.Nd4 Nh6 35.Nc6 Rc2+ 36.Kf3 Rxc6 37.Qxc6+ Ke7 38.Qe4+ Kf8 39.Qxh7 Ng8 (Time
= 0:05, Depth = 3/11)}
32.Qd6+
{Score: 8.00 32...Ke8 33.Nxb5 (Time = 0:00, Depth = 1/2)}
32...Ke8
{Score: 10.48 33.Nxb5 Nxg4 34.Nd4 Nh6 35.Nc6 Rc2+ 36.Kf3 Rxc6 37.Qxc6+ Ke7 38.Qe4+ Kf8 39.Qxh7 Ng8 (Time = 0:03,
Depth = 2/10)}
33.Nxb5
{Score: 10.51 33...Nxg4 34.Nd4 Nh6 35.Nc6 Rc2+ 36.Kf3 Rxc6 37.Qxc6+ Ke7 38.Qe4+ Kf8 39.Qxh7 Ng8 (Time = 0:02, Depth =
2/9)}
33...Rb1
{MATE IN 1. 34.Nc7# (Time = 0:00, Depth = 1/1)}
34.Nc7# 1-0
[Event "Chessmaster: Grandmaster Edition Rated Game"]
[Site ""]
[Date "2012.10.29"]
[Round ""]
[White "Anders"]
[Black "Ricardo"]
[TimeControl "600"]
[Result "1-0"]
[ECO " "]
{Annotations by Chessmaster: Grandmaster Edition Auto-Annotator. 5 seconds per move.
White Black
Book Move 3 2
Leave
Book 0 1
CMX Agrees 18 17
CMX Disagrees 13 14
Agreement Pct. 58% 55%
Total Error 31.36 41.44
Relevant
Error 26.27 32.44
Missed Mate 0 0
Moved Into Mate 0 1
}
1.d4
{A40 Queen's Pawn Opening. The Queen's Pawn opening move is somewhat slower than the popular e4, because White will not be
able to castle for three more moves. Its advantage is that it gives White more control over tactical surprises and often
provides more lasting initiative and pressure.}
1...d5
{D00 Queen's Pawn Game 1.d4 d5. Black answers symmetrically, challenging the center directly.}
2.c4
{D06 Queen's Gambit. The Queen's Gambit is the logical response to Black's symmetrical defense, challenging d5.}
2...dxc4
{D20 Queen's Gambit / Accepted. The Queen's Gambit Accepted opens a number of important variations in Queenside
openings. Rarely does Black try to hold the pawn. Instead, he attempts to make positional gains while White regains it.
Fianchettoing the Queen's Bishop is common.}
3.Nf3
{D21 Queen's Gambit / Accepted / Accepted 2.c4 dxc4 3.Nf3.}
3...Nc6
{Out of Opening Book. a6 would have been in the Queen's Gambit / Accepted / Alekhine Defense book opening.
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4.e3
{Threatens Black's pawn at c4.}
4...Nf6 5.Bxc4
{Enables the short castle. White wins a pawn. Material is even.}
5...Bg4
{Pins White's knight at f3.}
6.Qb3
{Frees White's knight at f3 from the pin and attacks Black's pawn at b7.}
6...e6 7.Bd2 Bd6
{Makes way for a castle to the kingside.}
8.Qxb7
{Attacks Black's knight at c6 and isolates Black's pawn at a7 and Black's pawn at c7.}
8...Rb8
{Leads to 9.Qxc6+ Kf8 10.Bc3 Rb6 11.Qa4 Bxf3 12.gxf3 Nd5 13.Qxa7 Nxc3 14.bxc3, which wins a bishop and a knight for a
bishop, two knights, and a pawn. Better is Bxf3, leading to 9.gxf3 Ne7 10.Qa6 c6 11.Nc3 Qb6 12.O-O-O Qxa6 13.Bxa6 O-O, which
wins a queen and a knight for a queen and a bishop.}
9.Qxc6+
{Checks Black's king and blocks Black's pawn at c7. White wins a knight and a pawn. White is ahead by a knight and a
pawn.}
9...Nd7
{Protects Black's king and threatens White's pawn at b2.}
10.Qa6
{Slightly better is Bc3.}
10...Nb6
{Slightly better is Rxb2.}
11.Ne5
{Slightly better is Bb5+.}
11...Bxe5
{Protects Black's bishop at g4. Black wins a knight. White is up a pawn.}
12.Bb4
{Leads to 12...Nxc4 13.Qxc4 Bd6 14.Bxd6 cxd6 15.f3 Bh5 16.Nc3 O-O 17.O-O-O, which wins a bishop and a knight for two
bishops. Better is dxe5, leading to 12...O-O 13.Bb3 Nd7 14.Qxa7 Nxe5 15.O-O Rb6 16.Qa4, which wins a bishop and a pawn for a
pawn.}
12...Qd7
{Slightly better is Nxc4.}
13.Bb5
{Pins Black's queen with a partial pin and attacks Black's queen.}
13...c6
{Frees Black's queen from the pin, protects Black's pawn at a7 and Black's queen, and threatens White's bishop at b5.}
14.Bc5
{Frees Black's pawn at c6 from the pin. Leads to 14...cxb5 15.f3 Na4 16.b4 Nxc5 17.bxc5 Bxd4 18.exd4 Qxd4 19.Qd6 Qxd6
20.cxd6, which wins a queen, a bishop, and a knight for a queen, two bishops, and two pawns. Better is Bd3, leading to 14...Nd5
15.Ba3 Bd6 16.O-O O-O 17.Nd2 Nb4 18.Qc4 Nxd3 19.Qxd3, which wins a knight for a bishop.}
14...cxb5
{ Black wins a bishop.}
15.b3
{Pins own pawn at d4. Leads to 15...Rc8 16.b4 Nd5 17.f3 Nxb4 18.Bxb4 Rc1+ 19.Kf2 Rxh1 20.dxe5, which wins a bishop and a
knight for a rook and a pawn. Better is f3, leading to 15...Na4 16.b4 Nxc5 17.bxc5 Bxd4 18.exd4 Qxd4 19.Qc6+ Kd8 20.Qd6+ Qxd6
21.cxd6 Bf5 22.Nd2, which wins a queen, a bishop, and a knight for a queen, a bishop, and two pawns.}
15...Bd6
{Slightly better is Rc8.}
16.b4
{Leads to 16...O-O 17.Nc3 Bxc5 18.bxc5 Nd5 19.Nxd5 exd5 20.Qd6 Qb7, which wins a bishop and a knight for a bishop and a
knight. Better is Bxd6, leading to 16...Qxd6 17.Qxb5+ Kf8 18.Nd2 Qc7 19.O-O Nd5 20.Qd3 Qc3 21.Qxc3 Nxc3 22.Rfc1, which wins a
queen, a bishop, and a pawn for a queen and a bishop.}
16...e5 17.f3
{Threatens Black's bishop at g4.}
17...exd4 18.fxg4 d3
{Leads to 19.Nd2 O-O 20.O-O Bxc5 21.bxc5 Nd5 22.Rae1 Nc3 23.Qd6 Rbd8 24.Qxd7 Rxd7, which wins a queen and
a bishop for a queen and a bishop. Better is dxe3, leading to 19.a4 Bxc5 20.bxc5 O-O 21.axb5 Rfd8 22.O-O e2 23.Re1 Qd4+ 24.Kh1
Qxc5 25.Qxa7 Qxb5, which wins a bishop and three pawns for a bishop and two pawns.}
19.Bxd6
{Attacks Black's rook at b8 and prevents the opponent's kingside castle.}
19...Qxd6
{Removes the threat on Black's rook at b8, attacks White's pawn at b4, and enables the short castle.}
20.Qxa7
{Slightly better is Qxb5+.}
20...Nd7
{Leads to 21.Qd4 Ke7 22.Nc3 Rhc8 23.Kd2 Ne5 24.Rhf1 Rd8 25.Rf5 f6, which results in no exchange of material. Better is
Qxb4+, leading to 21.Nd2 O-O 22.a3 Qb2 23.Rd1 Nc4 24.Rf1 Rbe8 25.Rf3 Qc2, which wins a pawn.}
21.Kd1
{Danger! Leads to 21...Qc6 22.Na3 Qxg2 23.Re1 Qxg4+ 24.Kd2 Qg2+ 25.Kd1 d2 26.Re2 Qh1+ 27.Kxd2 Qxa1 28.Nc2 Qe5, which
wins a pawn for a rook and two pawns. Much better is Qd4, leading to 21...Ke7 22.Nc3 Rhc8 23.Kd2 Ne5 24.Rhf1 Rd8 25.Rf5 f6,
which does not result in any captures.}
21...Qe5
{Ouch! Leads to 22.Qd4 O-O 23.Nd2 Qe6 24.Rf1 Nf6 25.Rf5 Rbd8 26.Qf4, which does not result in any captures. Much
better is Qc6, leading to 22.Na3 Qxg2 23.Re1 Qxg4+ 24.Kd2 Qg2+ 25.Kd1 d2 26.Re2 Qh1+ 27.Kxd2 Qxa1 28.Nc2 Qe5, which wins a rook
and two pawns for a pawn.}
22.h4
{Danger! Leads to 22...Qxa1 23.Qc7 Qxb1+ 24.Qc1 Qxa2 25.Qd2 Qb1+ 26.Qc1 Qxb4 27.Qd2 Qxg4+ 28.Kc1 Rc8+ 29.Kb1 Qe2 30.Rd1
Qxd2 31.Rxd2, which wins a queen for a queen, a rook, a knight, and three pawns. Much better is Qd4, leading to 22...O-O 23.Nd2
Qe6 24.Rf1 Nf6 25.Rf5 Rbd8 26.Qf4, which does not result in any captures. This was white's most serious mistake, but white was
able to recover from the error and later mated
black.
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22...Qxa1
{Pins White's knight and attacks White's knight.}
23.Kd2
{Protects White's knight, threatens Black's pawn at d3, and blocks Black's pawn at d3.}
23...Qxa2+
{Danger! Frees White's knight from the pin. Leads to 24.Qxa2 O-O 25.Kxd3 Ne5+ 26.Ke2 Nxg4 27.Nc3 Rfe8 28.Nd5 Rbc8
29.Rf1, which wins two pawns for a queen and a pawn. Much better is Qb2+, leading to 24.Kxd3 Rd8 25.Qd4 Ne5+ 26.Ke4 Rxd4+
27.exd4 Qe2+ 28.Kd5 Nd7 29.Kc6 Qxg2+ 30.Kxb5 Qd5+ 31.Ka6 Qxh1, which wins a queen, a rook, and a pawn for a rook and two pawns.
This was black's key error. Black was not able to regain the last ground and was eventually
mated.
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24.Qxa2
{Protects White's king. White wins a queen for a rook and a pawn.}
24...Ke7
{Slightly better is Ne5.}
25.Qd5 Rhc8 26.Na3 Rc7
{Leads to 27.Nxb5 Rcb7 28.Rf1 f6 29.Nd4 Kf8 30.Nc6 Rc8 31.Qd6+ Kf7 32.Kxd3, which loses two pawns.
Better is f6, leading to 27.Qxd3 Rd8 28.Ke2 g6 29.Qd4 Ne5 30.Qa7+ Nd7 31.Rd1, which loses a pawn.}
27.Kxd3
{Slightly better is Nxb5.}
27...Rbc8
{Hangs the pawn at b5. Leads to 28.Nxb5 Rc6 29.Ra1 Rc1 30.Qg5+ Nf6 31.Rxc1 Rxc1 32.e4 Rc6 33.e5 Kf8 34.exf6 Rxf6,
which wins a rook and a pawn for a rook, a knight, and a pawn. Better is Rcb7, leading to 28.g5 f6 29.Ke2 Ne5 30.gxf6+ gxf6
31.Rd1 Kf8 32.Rf1, which wins a pawn for a pawn.}
28.Ke2
{Leads to 28...Kf8 29.Nxb5 Rc2+ 30.Kf3 Nf6 31.Qf5 h6 32.Nd4 R2c3 33.Rd1, which wins a pawn. Better is Nxb5, leading to
28...Rc6 29.Ra1 Rc1 30.Qg5+ Nf6 31.Rxc1 Rxc1 32.e4 Rc6 33.e5 Kf8 34.exf6 Rxf6, which wins a rook, a knight, and a pawn for a
rook and a pawn.}
28...Rc1
{Leads to 29.Rxc1 Rxc1 30.Qg5+ Ke8 31.Nxb5 Rc2+ 32.Kf3 Rc6 33.Qxg7 Rf6+ 34.Ke2 Rb6 35.Nc7+ Kd8 36.Nd5, which wins a
rook for a rook and two pawns. Better is Kf8, leading to 29.Nxb5 Rc2+ 30.Kf3 Nf6 31.Qf5 h6 32.Nd4 R2c3 33.Rd1, which loses a
pawn.}
29.Rd1
{Slightly better is Rxc1.}
29...Nf6
{Leads to 30.Qd6+ Ke8 31.Rxc1 Rxc1 32.Nxb5 Nxg4 33.Nc7+ Rxc7 34.Qxc7 Nf6 35.b5 Nd7 36.b6 Nxb6 37.Qb8+ Kd7 38.Qxb6,
which wins a rook, a knight, and two pawns for two rooks, a knight, and a pawn. Better is Rxd1, leading to 30.Qxd1 h6 31.Nxb5
Rc6 32.Nd4 Rg6 33.Nf5+ Kd8 34.Qd4 h5, which wins a rook for a rook and a pawn.}
30.Qe5+
{Leads to 30...Kf8 31.Qd6+ Ke8 32.Rxc1 Rxc1 33.Nxb5, which wins a rook and a pawn for a rook. Better is Qd6+, leading
to 30...Ke8 31.Rxc1 Rxc1 32.Nxb5 Nxg4 33.Nc7+ Rxc7 34.Qxc7 Nf6 35.b5 Nd7 36.b6 Nxb6 37.Qb8+ Kd7 38.Qxb6, which wins two rooks, a
knight, and a pawn for a rook, a knight, and two pawns.}
30...Kf8
{Forced. Moves it out of check and threatens White's pawn at g4.}
31.Rxc1
{Threatens Black's rook at c8.}
31...Rxc1
{ Black wins a rook for a rook.}
32.Qd6+
{Removes the threat on White's pawn at g4, checks Black's king, and seizes the open file.}
32...Ke8
{Moves it out of check and attacks White's pawn at g4.}
33.Nxb5
{Creates a passed pawn on b4. White wins a pawn.}
33...Rb1
{Black gives White a forced mate opportunity. Much better is Nxg4. Rb1 leads to 34.Nc7# and mate.}
34.Nc7#
{Checkmates Black's king.
³
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