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Game #166 by guest x mauro

20:44, December 12, 2007 by guest x mauro

Game #172 by gabrielozaki

01:33, December 17, 2007 by gabrielozaki

[Event "Chessmaster 10th Edition Rated Game"] [Site "?"] [Date "2007.12.14"] [Round "?"] [White "Gabriel Ozaki"] [Black "Miranda"] [Result "1-0"] [ECO "D07"] [Opening "QGD"] [Variation "Chigorin, 3.e3"] [TimeControl "300"] [Termination "normal"] [PlyCount "99"] [WhiteType "program"] [BlackType "program"] {Annotations by Chessmaster 10th Edition Auto-Annotator. 15 seconds per move. White Black Book Move 2 1 Leave Book 0 1 CMX Agrees 37 35 CMX Disagrees 11 13 Agreement Pct. 77% 73% Total Error 15.31 33.03 Relevant Error 11.57 20.31 Missed Mate 0 0 Moved Into Mate 0 0 } 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.} d5 {D00 Queen's Pawn Game 1.d4 d5. Black answers symmetrically, challenging the center directly.} 2.e3 {D00 Queen's Pawn Game 1.d4 d5. This is the start of the Stonewall Attack, a Black defense adapted to White's needs. With 2.e3 White makes difficult the development of the c1-Bishop, later playingBd2-e1-h4, but that will come much later in the game and require the movement of the f-pawn, which is part of the Stonewall Attack plan. In general, White creates more problems for himself than for Black.} Nc6 {Out of Opening Book. â€¡f6 would have been in the Queen's Pawn Game 1.d4 d5 opening line. } 3.c4 e5 4.dxe5 { White wins a pawn. White is ahead by a pawn.} Bb4+ {Checks White's king.} 5.Nc3 {Removes the threat on White's king.} Bxc3+ {Partially pins White's pawn at b2 and checks White's king.} 6.bxc3 {Removes the threat on White's king.} Be6 {Blocks White's pawn at e5.} 7.cxd5 {Forks Black's knight at c6 and Black's bishop.} Qxd5 {Pins White's pawn at g2, removes the threat on Black's knight at c6 and Black's bishop, isolates White's pawn at c3, and enables the long castle.} 8.Qxd5 {Disengages the pin on White's pawn at g2, removes the threat on White's pawn at e5, and hampers the opponent's ability to castle to the queenside.} Bxd5 {Pins White's pawn at g2, threatens White's pawn at e5, and clears the way for a queenside castle.} 9.e6 {Slightly better is f4.} Bxe6 { Black wins a queen, a knight, and two pawns for a queen, a bishop, and a pawn. Material is even.} 10.Nf3 Nf6 {Enables the short castle.} 11.Bd3 {Enables the short castle.} Ng4 12.O-O Nce5 {Attacks White's bishop at d3.} 13.Nxe5 {Protects White's bishop at d3.} Nxe5 {Attacks White's bishop at d3. Black wins a knight for a knight. Material is even.} 14.Be4 {Moves it to safety, pins Black's pawn at b7, and attacks Black's pawn at b7.} Nf3+ {Hangs the knight. Leads to 15.â€ xf3 O-O-O 16.a4 Ë†he8 17.Ë†d1 Ë†xd1+ 18.â€ xd1 Ë†d8 19.â€ e2 â€ f5 20.c4 â€ d3 21.â€ xd3 Ë†xd3 22.â€ b2, which wins a rook and a bishop for a rook, a bishop, and a knight. Better is O-O-O, leading to 15.f4 â€¡c4 16.Ë†b1 â€¡d6 17.â€ d3 c5 18.e4 â€ c4 19.â€ xc4 â€¡xc4 20.f5, which wins a bishop for a bishop.} 15.Bxf3 {Removes the threat on White's king and attacks Black's pawn at b7.} O-O {Slightly better is O-O-O.} 16.Bxb7 {Attacks Black's rook at a8 and isolates Black's pawn at a7 and Black's pawn at c7. White wins a knight and a pawn. White is up a bishop and a pawn in material.} Rab8 {Moves it to safety and attacks White's bishop at b7.} 17.Ba3 {Leads to 17...Ë†xb7 18.â€ xf8 â€¹xf8 19.Ë†fb1 Ë†b6 20.Ë†xb6 cxb6 21.a4 â€ b3 22.a5 b5 23.Ë†b1 â€ c4, which wins two rooks for a rook and two bishops. Better is â€ f3, leading to 17...Ë†b5 18.Ë†d1 f5 19.a4 Ë†b3 20.â€ a3 Ë†fb8 21.â€ b4 Ë†b2 22.â€ c5, which results in no captures.} Rxb7 18.Bxf8 Kxf8 { Black wins two bishops for a rook.} 19.f4 Rb2 20.a4 {Slightly better is Ë†f2.} Rb8 {Slightly better is â€ f5.} 21.f5 {Attacks Black's bishop.} Bd5 {Moves it to safety.} 22.g4 {Slightly better is Ë†ad1.} Rb2 23.Rf2 {Threatens Black's rook.} Rb8 {Moves it to safety.} 24.Rc1 Re8 {Threatens White's pawn at e3.} 25.Re2 {Leads to 25...â€ f3 26.Ë†ee1 â€ xg4 27.e4 â€ f3 28.e5 Ë†d8 29.e6 â€¹e7 30.â€¹f2 â€ g4 31.Ë†e5, which loses a pawn. Better is Ë†e1, leading to 25...Ë†b8 26.f6 gxf6 27.Ë†xf6 Ë†b3 28.Ë†f5 â€ e4 29.Ë†f4 â€ d3 30.c4, which wins a pawn for a pawn.} Re4 {Forks White's pawn at g4 and White's pawn at a4 and blocks White's pawn at e3.} 26.a5 {Slightly better is h3.} Re8 {Leads to 27.â€¹f2 Ë†e5 28.Ë†d1 h5 29.h3 â€ c6 30.a6 Ë†c5 31.Ë†d8+ â€¹e7 32.Ë†c8 hxg4 33.hxg4, which wins a pawn for a pawn. Better is Ë†xg4+, leading to 27.â€¹f2 Ë†a4 28.Ë†b1 Ë†xa5 29.e4 â€ c6 30.â€¹e3 Ë†a4 31.Ë†b4 Ë†a3, which wins two pawns.} 27.c4 {Slightly better is â€¹f2.} Re4 {Uh-oh! Leads to 28.cxd5 Ë†xg4+ 29.â€¹h1 Ë†b4 30.Ë†xc7 a6 31.d6 â€¹e8 32.Ë†e7+ â€¹f8 33.Ë†a7 â€¹e8 34.Ë†c2 Ë†b8 35.Ë†xa6, which wins a pawn for a bishop and two pawns. Much better is â€ f3, leading to 28.Ë†b2 â€ xg4 29.Ë†b7 a6 30.â€¹f2 c5 31.Ë†c7 Ë†e5 32.e4 Ë†xe4 33.Ë†xc5, which wins two pawns for a pawn. This was black's critical error in the game. Black did recover, but was later mated. } 28.c5 {Yikes! Leads to 28...Ë†xg4+ 29.â€¹f2 â€ e4 30.f6 gxf6 31.Ë†g1 Ë†h4 32.â€¹e1 Ë†h5 33.Ë†g4 â€ f3, which loses two pawns. Much better is cxd5, leading to 28...Ë†xg4+ 29.â€¹h1 Ë†b4 30.Ë†xc7 a6 31.d6 â€¹e8 32.Ë†e7+ â€¹f8 33.Ë†a7 â€¹e8 34.Ë†c2 Ë†b8 35.Ë†xa6, which wins a bishop and two pawns for a pawn. White had a won game before this error, but it was not costly; white was able to eventually mate. } Re8 {Leads to 29.â€¹f2 â€ c6 30.Ë†d2 â€¹e7 31.h3 â€¹f6 32.Ë†c4 h5 33.Ë†dd4 hxg4 34.hxg4, which wins a pawn for a pawn. Better is Ë†xg4+, leading to 29.â€¹f2 â€ e4 30.f6 gxf6 31.Ë†g1 Ë†h4 32.â€¹e1 Ë†h5 33.Ë†g4 â€ f3, which wins two pawns.} 29.Rd2 {Attacks Black's bishop.} Re4 {Leads to 30.Ë†xd5 Ë†xg4+ 31.â€¹h1 Ë†e4 32.Ë†d7 Ë†xe3 33.Ë†xc7 a6 34.Ë†a7 Ë†e5 35.f6 gxf6 36.Ë†xa6, which wins three pawns for a bishop and two pawns. Better is â€ c6, leading to 30.â€¹f2 Ë†b8 31.Ë†c4 Ë†b5 32.a6 Ë†a5 33.Ë†d8+ â€¹e7 34.Ë†c8 Ë†a2+ 35.â€¹g3 â€¹d7, which does not result in any captures.} 30.Rxd5 Rxg4+ {Checks White's king and isolates White's pawn at h2. White wins a bishop for a pawn. White is ahead by a rook in material.} 31.Kh1 {Moves it out of check.} Ke7 {Slightly better is Ë†e4.} 32.Rcd1 {Leads to 32...â€¹f6 33.Ë†d7 Ë†a4 34.Ë†xc7 Ë†xa5 35.Ë†dd7 â€¹xf5 36.Ë†xf7+ â€¹e4 37.Ë†xg7 â€¹xe3 38.Ë†xh7, which wins four pawns for three pawns. Better is c6, leading to 32...â€¹f6 33.Ë†d6+ â€¹e5 34.Ë†d7 Ë†g5 35.Ë†xf7 a6 36.Ë†xc7 â€¹e4 37.Ë†e7+ â€¹xf5, which wins two pawns for a pawn.} Kf6 {Blocks White's pawn at f5.} 33.c6 {Leads to 33...Ë†c4 34.Ë†b1 Ë†xc6 35.Ë†b7 a6 36.Ë†d7 Ë†c1+ 37.â€¹g2 Ë†c2+ 38.â€¹g3 Ë†e2 39.Ë†bxc7 Ë†xe3+ 40.â€¹f4, which wins a pawn for two pawns. Better is Ë†d7, leading to 33...Ë†a4 34.Ë†xc7 Ë†xa5 35.Ë†dd7 â€¹xf5 36.Ë†xf7+ â€¹e4 37.Ë†xg7 â€¹xe3 38.Ë†xh7, which wins four pawns for three pawns.} Rc4 {Attacks White's pawn at c6.} 34.e4 Rxe4 {Leads to 35.Ë†d7 Ë†a4 36.Ë†xc7 Ë†xa5 37.Ë†c1 Ë†xf5 38.Ë†xf7+ â€¹xf7 39.c7 a5 40.c8=â€° Ë†f2. Better is Ë†xc6, leading to 35.â€¹g2 Ë†c3 36.Ë†1d3 Ë†c2+ 37.â€¹g3 g6 38.Ë†f3 â€¹e7 39.Ë†f2 Ë†c3+ 40.â€¹f4, which gains a queen and two pawns and loses a rook and three pawns by comparison.} 35.R5d7 {Attacks Black's pawn at c7.} Rf4 {Leads to 36.Ë†c1 Ë†e4 37.Ë†xc7 Ë†e8 38.Ë†xa7 Ë†c8 39.Ë†d7 g6 40.fxg6 hxg6, which wins a pawn for three pawns. Better is a6, leading to 36.Ë†xc7 Ë†c4 37.Ë†dd7 â€¹g5 38.Ë†xf7 Ë†c1+ 39.â€¹g2 Ë†c2+ 40.â€¹f3 Ë†xh2 41.Ë†a7 g6, which wins a pawn for two pawns.} 36.Rxc7 {Attacks Black's pawn at a7 and creates a passed pawn on c6.} Rf2 {Leads to 37.Ë†c1 Ë†e2 38.Ë†d7 Ë†e8 39.c7 Ë†c8 40.Ë†d8 â€¹xf5 41.Ë†c5+ â€¹e6 42.Ë†xc8, which wins a pawn for a rook. Better is Ë†c4, leading to 37.Ë†dd7 g6 38.Ë†xf7+ â€¹g5 39.Ë†xa7 Ë†xc6 40.fxg6 hxg6 41.a6 Ë†d6, which wins two pawns for three pawns.} 37.Rxa7 {Creates a passed pawn on a5. White wins two pawns. White is up a rook and a pawn in material.} Re2 {Leads to 38.Ë†b7 Ë†e8 39.c7 Ë†a8 40.Ë†b8 Ë†xa5 41.c8=â€° Ë†e5 42.Ë†b6+ â€¹g5 43.Ë†g1+ â€¹f4 44.Ë†xg7 Ë†xf5 45.Ë†xh7. Better is Ë†c2, leading to 38.c7 â€¹xf5 39.a6 â€¹g4 40.Ë†b7 â€¹f3 41.a7 Ë†xc7 42.Ë†xc7 â€¹e2 43.Ë†a1, which gains a queen and two pawns and loses a rook and a pawn by comparison.} 38.c7 {Slightly better is Ë†b7.} Rc2 {Leads to 39.a6 â€¹xf5 40.Ë†b7 â€¹g4 41.a7 f5 42.a8=â€° â€¹h5 43.â€°e8+ g6 44.â€°a4 Ë†xc7 45.Ë†xc7. Better is Ë†e8, leading to 39.Ë†b7 Ë†c8 40.Ë†d8 Ë†xc7 41.Ë†xc7 â€¹xf5 42.Ë†xf7+ â€¹g6 43.Ë†dd7 h5 44.Ë†xg7+ â€¹f5, which gains a queen and loses three pawns by comparison.} 39.a6 {Advances the passed pawn.} Kxf5 {Creates a passed pawn on f7. Black wins a pawn. White is up a rook.} 40.Rb7 Kg5 41.a7 {Adds a promote threat at a7.} Kh6 42.a8=Q {White spots a mate in 6. Leads to 42...Ë†c5 43.c8=â€° Ë†xc8 44.â€°xc8 f5 45.â€°xf5 g6 46.â€°f8+ â€¹g5 47.Ë†g1+ â€¹h5 48.Ë†xh7# and checkmate.} Rc6 43.c8=Q {White has a mate in 5. Forks Black's rook and Black's pawn at f7. Leads to 43...Ë†c5 44.â€°h3+ Ë†h5 45.Ë†d6+ f6 46.Ë†xf6+ gxf6 47.â€°g8 Ë†xh3 48.Ë†xh7# and checkmate.} Re6 {Moves it out of immediate jeopardy and takes control of the open file.} 44.Rxf7 {White has a mate in 4. Threatens Black's rook. Leads to 44...Ë†e3 45.Ë†d6+ g6 46.Ë†xh7+ â€¹g5 47.â€°d5+ Ë†e5 48.â€°xe5# and checkmate.} Re3 {Moves it to safety.} 45.Qg2 {White has a mate in 4. Moves it out of the corner. Leads to 45...Ë†g3 46.â€°ch3+ Ë†xh3 47.â€°xg7+ â€¹h5 48.Ë†d5+ â€¹h4 49.Ë†f4# and checkmate.} Rg3 {Threatens White's queen at g2.} 46.Qxg3 {White has a mate in 2. Threatens checkmate (queen at c8 to h3). Leads to 46...g5 47.â€°d6+ â€¹h5 48.Ë†xh7# and mate.} g5 47.Qc5 {White has a mate in 2. Threatens checkmate (queen at g3 captures pawn). Leads to 47...â€¹g6 48.â€°f5+ â€¹h5 49.â€°fxg5# and mate.} Kg6 {Attacks White's rook at f7.} 48.Qf3 {White has a mate in 1. Threatens checkmate (rook to d6) and removes the threat on White's rook at f7. Leads to 48...g4 49.â€°f6# and checkmate.} g4 {Threatens White's queen at f3.} 49.Qf4 {Moves it to safety and threatens checkmate (rook to d6).White doesn't see the win. Better is â€°f6#, which checkmates Black's king.} g3 50.Qcg5# {Checkmates Black's king. } {Mate} 1-0

Game #173 by Noname

21:20, December 17, 2007 by Noname

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Game #172 by gabrielozaki

Game #173 by Noname