[Event "Live Chess"]
[Site "Chess.com"]
[Date "2014.01.07"]
[Round ""]
[White "dougvall"]
[Black "lapaget"]
[TimeControl "30"]
[Result "0-1"]
[ECO " "]
[WhiteELO "1420"]
[BlackELO "1441"]

1.e4 
{B00 King's Pawn Opening. The King's Pawn opening move is both popular and logical. It controls the center, opens lines
for both the Queen and the Bishop, and usually leads to an open game in which tactics, rather than slow maneuvering,
predominates.} 
1...d5 
{B01 Center Counter Game. The Center Counter Defense is an open invitation to tactics - an immediate decision in the
center.} 
2.exd5 
{B01 Center Counter Game. By capturing the d-pawn, White either forces an early Queen development or a gambit, both of
which are favorable to White.} 
2...Nf6 
{B01 Center Counter Game / 2 ...Nf6. Black can afford to delay the recapture, since any attempt to hold the pawn with
c4 can be met with an aggressive gambit.} 
3.c4 
{B01 Center Counter Game / 2 ...Nf6.} 
3...e6 
{B01 Center Counter Game / Icelandic Gambit.} 
4.Nc3 
{Out of Opening Book. d4 would have been in the Center Counter Game / Icelandic Gambit book opening} 
4...exd5 5.cxd5 Nxd5 6.Nxd5 Qxd5 
{Pins White's pawn at g2. Black wins a knight and two pawns for a knight and a pawn. Material
is even.} 
7.Qe2{+} 
{Checks Black's king.} 
7...Be6 
{Protects Black's king.} 
8.Nf3 
{Frees the pin on White's pawn at g2.} 
8...Bd6 
{Enables the short castle.} 
9.Qb5{+} 
{Checks Black's king.} 
9...Qxb5 
{Slightly better is Nc6.} 
10.Bxb5{+} 
{Checks Black's king and makes way for a castle to the kingside. White wins a queen for a queen. Material is even.} 
10...c6 
{Removes the threat on Black's king and threatens White's bishop at b5.} 
11.Be2 
{Moves it to safety.} 
11...O-O 12.O-O Nd7 13.Re1 Nf6 14.d4 c5 15.dxc5 
{Threatens Black's bishop at d6.} 
15...Bxc5 
{ Black wins a pawn for a pawn. Material is even.} 
16.Ng5 Bg4 17.Bd3 g6 
{Slightly better is Bb4.} 
18.Bd2 Rae8 19.Bc3 
{Attacks Black's knight.} 
19...Rxe1{+} 
{Protects Black's knight and forks White's king and White's rook at a1.} 
20.Rxe1 
{Protects White's king and attacks Black's knight. White wins a rook for a rook. Material is even.} 
20...Nd5 
{Moves it to safety.} 
21.Bd2 Bd4 
{E7 TO FLIP THE BOARD.   Leads to 22.Re4 Bxb2 23.Rxg4 Bc3 24.Bc1 Rd8 25.Bc2 Re8 26.Re4 Rc8 27.Bb3, which wins a pawn for a bishop. Better is
Rc8, leading to 22.h3 Bd7 23.Rc1 Nb6 24.Ne4 Be7 25.Rxc8+ Bxc8 26.Be3 Bf5, which wins a rook for a rook. 
THIS WAS BLACK'S MOST SIGNIFICANT ERROR, but the game remained within reach of either player. White eventually
resigned.} 
22.Re4 
{Forks Black's bishop at g4 and Black's bishop at d4.} 
22...Bxf2{+} 
{Slightly better is Bxb2.} 
23.Kxf2 
{Attacks Black's bishop at g4. White wins a bishop for a pawn.} 
23...Nf6 
{Slightly better is Bf5.} 
24.Re7 
{Moves it to safety and attacks Black's pawn at b7.} 
24...Rd8 
{Pins White's bishop at d3 and attacks White's bishop at d3.} 
25.Bc3 
{Frees White's bishop at d3 from the pin and attacks Black's knight.} 
25...Nd5 
{Moves it to safety and attacks White's rook.} 
26.Re4 
{Leads to 26...Nxc3 27.bxc3 Bf5 28.Ke3 Bxe4 29.Nxe4 Kg7 30.Bc4 h6 31.Nc5 b6 32.Ne4, which wins a bishop and a knight for
a rook and a bishop. Better is Rxf7, leading to 26...Nxc3 27.Bc4 Rd4 28.Rf4+ Rxc4 29.Rxc4 Nd1+ 30.Ke1 Ne3 31.Re4 h6 32.Re8+ Kg7
33.Rxe3 hxg5 34.Re7+ Kf6 35.Rxb7, which wins a rook, a knight, and two pawns for two bishops and a knight.} 
26...Nxc3 
{Triple-forks White's bishop at d3, White's rook, and White's pawn at a2.} 
27.bxc3 
{Protects White's rook and White's pawn at a2. White wins a knight for a bishop.} 
27...Bf5 
{Moves it to safety and attacks White's rook.} 
28.Ke3 
{Protects White's bishop.} 
28...Bxe4 
{Attacks White's pawn at g2.} 
29.Bxe4 
{Removes the threat on White's pawn at g2 and attacks Black's pawn at b7. Black wins the exchange (Rook for Bishop).
Material is even.} 
29...Re8 
{Pins White's bishop and protects Black's pawn at b7.} 
30.Kd4 
{Frees the pin on White's bishop and attacks Black's pawn at b7.} 
30...Rd8{+} 
{Removes the threat on Black's pawn at b7 and checks White's king.} 
31.Kc4 
{Moves it out of check and attacks Black's pawn at b7.} 
31...b6 
{Slightly better is Rc8+.} 
32.Kb5 
{Leads to 32...Re8 33.Ka6 h6 34.Bc6 Re2 35.Ne4 Rxa2+ 36.Kb7 Ra3 37.Be8 f5 38.Nd6 Kh7 39.Bb5, which loses a pawn. Better
is Bd5, leading to 32...Rc8+ 33.Kb4 Kg7 34.Bxf7 a5+ 35.Kb3 Kf6 36.h4 Rc7 37.Bc4 h6 38.Nf3 a4+ 39.Kb4 Rc8, which wins a pawn.} 
32...Rd2 
{Slightly better is Re8.} 
33.a4 
{Moves it to safety.} 
33...h6 
{Attacks White's knight.} 
34.Nh3 
{Moves it to safety.} 
34...Re2 
{Threatens White's bishop.} 
35.Bf3 
{Moves it to safety and attacks Black's rook.} 
35...Re5{+} 
{Moves it to safety and checks White's king.} 
36.Ka6 
{Slightly better is Kb4.} 
36...Ra5{+} 
{Removes the threat on Black's pawn at a7, forks White's king and White's pawn at a4, and blocks White's pawn at a4.}

37.Kb7 
{Forced. Moves it out of check.} 
37...Rxa4 
{Creates a passed pawn on a7. Black wins a pawn.} 
38.Bd1 
{Attacks Black's rook.} 
38...Ra1 
{Moves it to safety and threatens White's bishop.} 
39.Nf2 
{Protects White's bishop.} 
39...Ra2 
{Attacks White's knight.} 
40.Ne4 
{Moves it to safety.} 
40...Rxg2 
{Attacks White's pawn at h2, creates a passed pawn on f7, and isolates White's pawn at h2.} 
41.Kxa7 
{Threatens Black's pawn at b6 and isolates Black's pawn at b6.} 
41...Rxh2 
{Creates passed pawns on g6 and h6.} 
42.Kxb6 
{Creates a passed pawn on c3. White wins two pawns for two pawns.} 
42...f5 
{Attacks White's knight and advances the passed pawn.} 
43.Nd6 
{Moves it to safety.} 
43...Rd2 
{Forks White's knight and White's bishop.} 
44.Bb3{+} 
{Moves it to safety, removes the threat on White's knight, and checks Black's king.} 
44...Kg7 
{Moves it out of check and attacks White's knight.} 
45.Nb5 
{Moves it to safety.} 
45...h5 
{Advances the passed pawn.} 
46.c4 
{Pushes the passed pawn.} 
46...f4 
{Leads to 47.c5 f3 48.c6 f2 49.Bc4 Rc2 50.Bf1 h4 51.c7 h3 52.Bxh3 g5 53.Nd4 Rc3 54.Nf3. BETTER IS h4, leading to 47.c5
h3 48.c6 h2 49.c7 h1=Q 50.c8=Q Qf3 51.Bc4 Qe4 52.Qc6 Qf4 53.Qb7+ Kh6 54.Qc7, which gains a queen and a pawn and loses a queen by
comparison.} 
47.c5 
{Advances the passed pawn.} 
47...f3 
{Advances the passed pawn.} 
48.c6 
{Pushes the passed pawn.} 
48...f2 
{Adds a promote threat at f2.} 
49.Bc4 Rc2 
{Attacks White's bishop and moves it behind the passed pawn at c6.} 
50.Kc5 
{White steps into the forced mate. Much better is Bf1. Kc5 leads to 50...f1=Q 51.Nd6 Qf2+ 52.Kb4 Qd4 53.Ka5 Qxd6 54.Bb5
Qc5 55.Ka6 Ra2+ 56.Kb7 Ra7+ 57.Kb8 Qb6+ 58.Kc8 Qc7# and mate. This was white's most critical error. Even though black did not
exploit the mate, white eventually resigned.} 
50...Rxc4{+} 
{Black's asleep at the switch and doesn't see the forced mate. MUCH BETTER is f1=Q, leading to 51.Nd6 Qf2+ 52.Kb4
Qd4 53.Ka5 Qxd6 54.Bb5 Qc5 55.Ka6 Ra2+ 56.Kb7 Ra7+ 57.Kb8 Qb6+ 58.Kc8 Qc7# and mate.} 
51.Kxc4 f1=Q{+} 
{Skewers White's king and checks White's king. Black wins a bishop for a rook. In addition, Black gains a queen
through promotion.} 
52.Kc5 
{Moves it out of check. White resigns.} 
0-1

Rook fork

White to move and win one Bishop, while losing the game later. E7 to flip board. C8 to get PGN.
This fork #12.3 is explained in ebook Fork, a common chess pattern on Amazon.com , by Rodolfo Pardi.

For additional training on patterns, you can visit this page of mine: Patterns

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