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The Omega-Delta Gambit In 1985 I had discovered the Omega Gambit (1.d4 Nf6 2.e4) and played my first tournament game with the Omega Gambit in a tournament game against Scott Roods. The basic idea of the Omega Gambit was to sacrifice the e-pawn for quick development, two half open files, and a quick strike on the opponents Kingside castled position. See my article on the Omega Gambit here at Chessville. I later realized that the Omega Gambit could also be played from the Black side. The story on this gambit started after the 2nd Hawaii International Chess Tournament in 1995. I got crushed by GM Eduard Gufeld at 2nd Hawaii International in a tournament game and I almost felt like throwing gold pieces at the board at the end of that game because I was brilliantly crushed. Gufeld opened with 1.Nf3 d5 2.g3 and I had no gambit to play against this line. I really had no counter play in that game and got destroyed at the end. I would have loved to play a gambit against GM Gufeld. At least I would have made it a contest. After the game I had thought about 2 possible gambits against 1.Nf3 d5 2.g3. The first idea was to play 2…g5 a reversed Gibbins-Weidenhagen Gambit. The second idea was to play 2…e5 a gambit very similar to the Omega Gambit (1.d4 Nf6 2.e4), but a reversed form of the Omega Gambit. Thus was born the Omega-Delta Gambit (1.Nf3 d5 2.g3 e5). The Omega-Delta Gambit is a second generation Omega Gambit and I was very fascinated with playing this reversed form of the Omega Gambit. I had played many Omega Gambit games already, so I was very familiar with the strategy and tactics of an Omega Gambit from either the White side or Black side of the board. I experimented with this gambit against the chess programs Chess Genius, Chessica and MChess Pro to find out what it's strategic and tactical ideas were. My friend Stanley Leong (who is about 1900 strength) played the devil's advocate by defending the White side of this gambit in his two test games against the chess program Fritz2.
The position on the top left occurred in the Omega-Delta Gambit after 1.Nf3 d5 2.g3 e5 3.Nxe5 Nc6 4.Nxc6 bxc6. When you compare this position with the position on the top right, which occurred in the Omega Gambit after 1.d4 Nf6 2.e4 Nxe4 3.Nc3 Nxc3 4.bxc3, you will notice that the two positions are almost identical. The only difference is that the position on the top right does not have a kingside fianchetto. In the Omega-Delta Gambit White plays to put direct pressure on Black’s pawns at d5 and c6 with Bg2, c4, Nc3 and Qa4 or Qb3. In the Omega-Delta Gambit position on the top left, White has captured the pawn at e5 and the Knight at c6, therefore making his kingside vulnerable for a Black kingside attack because White has one less minor piece to guard the kingside castled position. THE GAMES All of the games have been analyzed by myself or by the chess engine Deep Junior 10 or a combination of myself and Deep Junior 10. GAMBIT ACCEPTED LINES Accepted Lines - Black’s goals: (after White castles Kingside)
Accepted Lines – White’s goals: (after White castles Kingside)
Genius2-Clyde Nakamura Omega-Delta Gambit Game 1996 1.Nf3 d5 2.g3 e5 {Omega-Delta Gambit} 3.Nxe5 Nd7 4.Nf3 Bd6 5.Bg2 h5 6.O-O h4 7.Nxh4 Rxh4!{a beautiful R exchange sacrifice.} 8.gxh4 Qxh4 9.h3 Ndf6 (9...Qf4 {I could have play this other move.} 10.Re1 Qh2+ 11.Kf1 Ne5 12.e4 Bxh3 13.Bxh3 Qxh3+ 14.Ke2 Qg4+ 15.Kf1 Nf3 16.Ke2 dxe4 17.d3 Nd4+ 18.Kd2 Bb4+ 19.c3 Qf4+ 20.Re3 Qxf2+ 21.Qe2 -+ 8.41 (21.Re2 e3#))
Chessica-Clyde Nakamura Omega-Delta Gambit Game 8/30/96 1.Nf3 d5 2.g3 {last book move.} e5 3.Nxe5 Bd6 {Black threatens to win material: Bd6xe5} 4.Nf3 h5 {White has a cramped position. White's piece can't move: c1} 5.Bg2 h4 6.Nxh4 Rxh4 7.gxh4 Qxh4 8.Bxd5? {White has no time to waste on pawn captures. He has to develop & castle very quickly.. White wins the exchange} Nf6 {Black threatens to win material: Nf6xd5} (8... Nf6 =/+) 9.Bf3 Ng4 10.Bxg4 Bxg4 11.d4 {White has a cramped position} Nc6 12.Qd3 {White should quickly conclude development.} O-O-O (12... O-O-O 13. Nc3 Nb4 -+ ) {White is in very real trouble here. His 2 rooks, bishop and knight are not active and his king is not in a safe position.} 13.Qe4 f5 14.Qe6+ Kb8 15.c3 f4 16.Qg6 Bh5 17.Qxg7 {It is really unbelievable. White is still snatching pawns. White's king is in very real danger of being checkmated.} Re8 18.O-O [diagram]
1.Nf3 d5 2.g3 e5
{Omega-Delta Gambit} 3.Nxe5 Bd6 4.Nf3 Nf6 5.Bg2 O-O 6.O-O Bg4 7.d4 Re8 8.Bg5 Nbd7 9.Nbd2 b5 10.e3 {Controls f4} Qb8 11.Qc1 a5
12.b3 b4 {This push gains space} 13.c4 bxc3 14.Qxc3 Bf5 15.Qc6
Bd3 16.Rfd1 h6 17.Bxf6 Nxf6 18.Ne5 Bb5 ({Worse is} 18...Bxe5 19.dxe5 Bb5 20.Qc3 +-) 19.Qc3 c5 20.f4 (20.Nd3!? {should be
considered} Bxd3 21.Qxd3 cxd4 22.exd4 +/= ) 20...cxd4 =/+ 21.exd4 Qb6 22.Ndc4 Qc7 23.a4 Bb4 {The black bishop is well posted.}
24.Qf3 Ba6 ({Inferior is} 24...dxc4 25.axb5 c3 26.Qc6 +/-) 25.Ne3 Bb7 26.Rac1 Qb6 27.Qe2 Rab8 28.Bf3 Ba3 29.Rb1 Bd6 30.Qd3 Ba6 31.Qc3 Rbc8 32.Qe1 Bb4 33.Qf2 Bb7 34.Qg2 Bc3 35.Nc2 Ne4 36.Bg4 Rc7 37.Bf5
Nf6 38.Qe2 Ba6 39.Qe3 Qb8 40.Qf3 Bc8 41.Ne3 Qa7 42.Bxc8 Rexc8 43.Nf5
Qa6 44.Ne3 Qb6 45.Nxd5 Bxd4+ 46.Kh1 Nxd5 47.Qxd5 Bxe5 48.Qxe5 Rc2 49.Qd4?? ({better is} 49.Rd4 =/+ {this is the best way to fight back})
49...Qe6 -+ 50.Qd3 Rf2 51.Kg1 (51.f5 {no good, but what
else?} Qc6+ 52.Qd5 -+) 51...Rcc2 52.Qd8+ Kh7 53.Qd3+ g6 54.f5 Rg2+
55.Kh1 Rxh2+ 56.Kg1 gxf5 57.Re1 Rcg2+ 58.Kf1 Rf2+ 59.Kg1 Qg6 60.Qf3
(60.Re4 {is not the saving move} fxe4 61.Qxe4 Qxe4 62.Rb2 Qh1#)
60...Rxf3 61.Kxh2 Qxg3+ (61...Qxg3+ 62.Kh1 Qh4+ 63.Kg2 Rf2+ 64.Kg1
Qh2#) (61...Rf2+ 62.Kh1 Qh5+ 63.Kg1 Qh2#)
0-1 MchessPro 3.5-Clyde Nakamura(2100) Omega-Delta Gambit Game 1996 1.Nf3 d5 2.g3 e5 {Omega-Delta Gambit} 3.Nxe5 Bd6 4.d4 {White plays to block the center by locking on to the e5 square with the N} Nd7 5.Bg2 Ngf6 6.Bf4 O-O 7.e3 Qe7 8.Nd3 c6 {over protecting the d5 pawn} 9.Bxd6 Qxd6 10.O-O Re8 11.Nc3 Ne4 12.Nxe4 dxe4 13.Nf4 Nf6 14.c4 Bf5 15.Qd2 g5 16.Ne2 Bg4 17.Nc3 Re7 18.h3 Bh5 19.a3 Rd8 20.b4 Rde8 21.Rfe1 Qe6 22.g4? {More king side pawn weaknesses.} Bg6 23.Qa2 {Nimzovich had said that you should over protect your weak point. Black's e4 pawn is guarded 5 times.} h5 24.gxh5 Bxh5 25.b5 Bf3 26.bxc6 bxc6 27.Rab1 g4 28.h4 Kg7 29.Ne2 Rh8 30.Nf4 Qf5 31.a4 Rxh4 32.Ne2 Qh7 {threatening Ra1+ with checkmate in 2 moves} 33.Ng3 Nh5 34.Qa3 [diagram]
1.Nf3 d5 2.g3 e5 3.Nxe5 Bd6 4.d4 Nd7 5.Nxd7 Qxd7 5...Bxd7 {5...Qd7 is not good because it blocks the development of the
Black B at c8} 6.c4 dxc4 7.e4 Nf6 8.Nc3 Bb4 9.Bxc4 Bxc3+ 10.bxc3 Nxe4
11.O-O O-O {+/= 0.41 Deep Junior 10} 6.Bg2 Nf6 7.c3 Controls b4
24.Bxc5 Qe8 25.Qxe4 {White is up 3 pawns and should win the endgame
easily} Qxe4 26.Bxe4 Rab8 27.Rd7 Rd8 28.R1d4 Rxd7 29.Rxd7 Be5 30.Bd5
h6 31.Rxf7 Kh7 32.b3 Kg6 33.Ra7 Bc8 34.Rxa5 Bc3 35.Ra7 Kh5 36.Kg2 1-0 Stanley Leong – Fritz2 Omega-Delta Gambit Game 1996
{A07: Réti
Opening: New York and Capablanca Systems} 1.Nf3 d5 2.g3 {last book
move} e5 3.Nxe5 Bd6 4.d4 Nd7 5.Nxd7 Bxd7 6.Bg2 c6 {Secures d5}
7.O-O {White castles and improves king safety} Nf6 8.Re1 O-O 9.Nc3
Bg4 10.Bf3 Bxf3 11.exf3 {White has new doubled pawns: f2+f3} Re8
12.Ne2 Re6 13.Bf4 Bxf4 14.Nxf4 ({Less advisable is} 14.gxf4 Nh5 15.f5 Qg5+ 16.Ng3 Ree8 =) 14...Rxe1+ 15.Qxe1 Qb6 {Black threatens to
win material: Qb6xd4} 16.Qc3 Re8 17.Kf1 Re7 (17...h6 18.a3 +/= )
18.a4 (18.Re1 Qa6+ 19.Kg2 Rxe1 20.Qxe1 Kf8 +-) 18...Qc7 19.b4 b6 (19...Qb6 20.Re1 Rxe1+ 21.Kxe1 +/-) 20.a5 h6 21.axb6 Qxb6
22.Qc5 Kf8 23.Qxb6 axb6 24.Ra6 Rb7 25.Nd3 Nd7 26.f4 Ke7 27.Ne5 Nxe5
28.fxe5 f6 29.f4 Ke6 30.Kf2 g5 (30...Kf5 31.Kf3 h5 32.Ra8 +-)
31.Kf3 Rb8 (31...gxf4 32.gxf4 Kf5 33.Ra8 +-) 32.Kg4 ({better
is} 32.Ra7!? {makes it even easier for White} gxf4 33.gxf4 c5 34.bxc5
fxe5 35.dxe5 bxc5 36.Ra6+ Ke7 +-) 32...gxf4 33.gxf4 fxe5 (33...h5+ 34.Kf3 +-) 34.fxe5 (34.dxe5 {keeps an even firmer grip} d4 +-)
34...Rg8+ 35.Kf4 Kd7?! {puts up no fight} (35...Rb8 +-) 36.Ra7+ Ke8 (36...Ke6 {otherwise it's curtains at once} 37.Rc7 Rg2 38.Rxc6+ Ke7 39.Rxh6 Rxc2 +-) 37.Ra8+ Kf7 38.Rxg8 Kxg8 39.Kf5 Kf7 40.h4
Ke7 {Black threatens to counter with b5} 41.e6 h5 (41...b5
{desperation} 42.Ke5 Kd8 +-) 42.c3 Kf8 43.Kf6 Ke8 44.e7 c5 45.dxc5
bxc5 (45...Kd7 {doesn't get the cat off the tree} 46.Kf7 bxc5 47.b5
Kc7 48.e8=Q Kb6 49.Qc6+ Ka7 50.Qc7+ Ka8 51.b6 d4 52.Qc8#) 46.bxc5
(46.Ke6 cxb4 47.cxb4 d4 48.b5 d3 49.b6 d2 50.b7 d1=Q 51.b8=Q+ Qd8
52. Qxd8#) 46... Kd7 47. Kf7 Kc6 48. e8=Q+ Kxc5 49. Qa4 Kd6 50. Qd4 Kc6
51. Ke7 (51. Ke6 Kc7 52.Qc5+ Kb7 53.Kd7 d4 54.Qb5+ Ka7 55.Qc6 Kb8
56.Qc7+ Ka8 57.Kc8 dxc3 58.Qb8#) 51...Kc7 52.Qc5+ Kb8 (52...Kb7
{doesn't change anything anymore} 53.Kd7 d4 54.Qc7+ Ka6 55.Kc6 dxc3 56.Qb6#) 53.Qb6+ Ka8 (53...Kc8 {cannot undo what has already been
done} 54.Kd6 d4 55.Qc7#) 54.Kd6 d4 55.Kc7 dxc3 56.Qb7# (56.Qa5#) 1-0 Accepted Line 4.Nxc6 bxc6 White Accepts the Exchange of Knights at c6 Granpa Lomer 1933 – Evilone (1886) Playchess.com Game 5 min. 8/11/05
1.Nf3 d5 2.g3 e5
{Omega-Delta Gambit} 3.Nxe5 Nc6 4.Nxc6 bxc6 {Black now has the
classic Omega Gambit type of pawn structure. In the Omega Gambit Accepted
the pawns are on c2, c3 & d4 but here we have a reversed type of pawn
structure with the pawns on c7, c6 and d5.} 5.d4 Be6 6.Bg2 Qd7 7.Bf4
Nf6 8.Nd2 Bd6 9.Bxd6 cxd6 10.O-O Bh3 {Black will exchange off the
White squared B to weaken the White castled position.} 11.b3 h5 12.Nf3
h4 13.Nxh4? {this loses to Rxh4} Rxh4 14.gxh4 Qg4 {White cannot
prevent check mate.} 15.e4 Qxg2# 0-1 Rex20 (1793) – Evilone (1869) Playchess.com Game 5 min. 9/4/05
1.Nf3 d5 2.g3 e5
{Omega-Delta
Gambit, Black sacs a pawn for the initiative and a quick attack.} 3.Nxe5
Nc6 4.Nxc6 bxc6 5.Bg2 Be6 6.d4 Qd7 7.O-O Bh3 {Black will exchange
off his B at h3 to weaken the White castled position} 8.c3 h5 9.Re1
Bxg2 10.Kxg2 h4 11.Bf4 g5 12.Bxg5 (12.Be5 f6 13.Bxc7 Qxc7 14.e4
O-O-O 15.Nd2 hxg3 16.hxg3 dxe4 17.Rxe4 c5 18.Qa4 f5 19.Re6 Ne7 20.Qb5
cxd4 21.Nf3 dxc3 22.bxc3 Qd7 23.Qc5+ Kb8 24.Ra6 Rh6 25.Rxh6 Bxh6 -+
1.67 ) 12...hxg3 13.hxg3 Qh3+ 14.Kf3 (14.Kg1 Qh1#) 14...Qf5+
15.Bf4 {? White now
falls into a mating net.} Qe4+ 16.Kg4 Nf6+ 17.Kg5 Qg6# 0-1 JustinSane (1987) – Evilone (2013) Internet Chess Club Game 15min. 4/11/99
1.Nf3 d5 2.g3 e5
{The
Omega-Delta Gambit. It is a second generation Omega Gambit.} 3.Nxe5 Nc6
4.Nxc6 bxc6 5.Bg2 Bd6 6.O-O h5 7.c4 h4 8.cxd5 hxg3 9.fxg3 Rxh2
{This sac is sound. After
10.Kxh2 Qh4+ 11.Kg1 Bxg3 threatening mate. If 12.Rf3 Bh3 13.Bxh3 Qh1+mate.
White needs to give back the R with 23.Rxg3 Qxg3 24.Bxh3 Qxh3 & the
position is equal since White cannot escape perpetual check..} 10.Qe1
Rh8 11.Qf2 Nf6 12.dxc6 Bh3 13.Nc3 Qc8 14.d4 Bxg2 15.Qxg2 Qg4 16.Bf4
O-O-O {It is risky to castle Q side with a White pawn at c6 but I needed
to coordinate the mobility of my pieces.} 17.e4 Nh5 18.Bxd6 Rxd6 19.e5
Rxd4 20.Rxf7 Nxg3 {White resigns} 0-1 Glaurung 2.0.1 – Bright 0.3a 7/25/08 Omega-Delta Gambit Engine Tourn. Game 5min. 1.Nf3 d5 2.g3 {last book move} e5 {Omega-Delta Gambit} 3.Nxe5 Nc6 4.Nxc6 bxc6 5.Bg2 Nf6 6.O-O Be7 {White has a cramped position. White's piece can't move: c1} 7.c4! {Deflection: d5} O-O (7...dxc4 8. Bxc6+ {Double attack} (8.Bxc6+ {Pinning}) (8.Bxc6+ {Deflection}) (8.Qa4 Decoy)) 8.Nc3 Re8 9.Qa4 {White threatens to win material: Qa4xc6} d4 {Black threatens to win material: d4xc3} 10.Ne4 Bf5 11.Nxf6+ Bxf6 12.Re1 d3 13.e3 {Covers d4} Be4 14.f3 {White threatens to win material: f3xe4} Bf5 15.f4 Be4 16.Bxe4 Rxe4 17.Qxc6 Qe8 {Black threatens to win material: Qe8xc6} 18.Qxc7 {White has a new passed pawn: c4. White's piece can't move: c1} Qa4 {Black threatens to win material: Qa4xc4} (18...Rc8!? {must definitely be considered} 19.Qxa7 Rexc4 =/+) 19.Qb7 +/= Rae8 20.Qb3 {White threatens to win material: Qb3xa4} Qc6 21.Qxd3 Rxc4 22.Rb1 {White has a cramped position. White's piece can't move: c1} Rd8 {Black threatens to win material: Rd8xd3} 23.Qa3 (23.Qf1!? =+{is worth looking at}) 23...Qe4 -/+ 24.Ra1 {White has a cramped position. White's piece can't move: c1} Rc2 25.Qa5 h6 26.a3 ({better is} 26.Rb1!? -/+) 26...Rd3 -+ 27.Re2 Qc6 28.Qxa7 (28.Kf2 Rxc1 29.Rxc1 Qxc1 30.Qa4 Rxd2 31.Qe8+ Kh7 32.Qxf7 Rxe2+ 33.Kxe2 Qxb2+ 34.Kf3 Qxa3 35.Qd5 Qc1 36.e4 Be7 37.Qf5+ Kh8 38.e5 Qd1+ 39.Kg2 Qd5+ 40.Kh3 a5 41.Qc8+ Bd8 42.Qa6 Qd7+ 43.Kg2 a4 -+ 3.05) 28...Rxc1+ 29.Rxc1 Qxc1+ 30.Kf2 Rxd2 31.Qa8+ Kh7 32.Qb7 Rxe2+ 33.Kxe2 Qg1 34.b3 Qxh2+ 35.Kd3 Qh5 36.Kd2 Qa5+ 37.Ke2 Qxa3 38.Qxf7 Qa8 39.Kf2 Qa2+ 40.Kf3 Qd2 41.Qc4 Bc3 (41...Qd1+ 42.Kf2 -+) 42.Qe4+ g6 43.Qb7+ Bg7 44.Qb5 (44.b4 Qe1 45.Qb5 Qh1+ 46.Kf2 h5 -+) 44...h5 45.Qc4 Bc3 46.Qf7+ Kh6 47.Qf8+ Bg7 48.Qf7 Qe1 49.Qc4 Bc3 50.Qb5 Bf6 51.Qa6 Be7 52.Qb5 Qd1+ 53.Kf2 Qc2+ 54.Kf3 Bc5 55.Qe8 Qd1+ 56.Ke4 Qh1+ 57.Kd3 Qf1+ 58.Kc3 Qc1+ 59.Kd3 Qb2 60.Qb5 Be7 61.Qb6 Qb1+ 62.Kd2 Bf8 63.Ke2 Qg1 64.Qd8 Qg2+ 65.Kd3 Qf1+ 66.Kc2 Bg7 67.Qg5+ Kh7 68.Kd2 Bf8 69.Qa5 Qg2+ 70.Kd3 Qxg3 71.Qa8
77...Qd5+ 78.Ke2 h2 0-1
Merlin One (1812)-Evilone (1951) Playchess.com Game 5min. 4/9/04 1.Nf3 d5 2.g3 e5 3.Bg2 {White declines the gambit pawn at e4} e4 4.Nd4 c5 5.Nb3 Nc6 6.O-O Be6 7.d3 f5 {the position has transposed into a reversed Alekhines Four Pawns Attack} 8.dxe4 fxe4 9.Nc3 Qd7 10.Bf4 O-O-O 11.h4 h6 12.Nb5 a6 13.Nc7 Bf7 (13...Qf7 14.Nxe6 Qxe6 15.c3 Nf6 16.Be3 Nd7 17.Qd2 b6 18.Kh2 g5 19.f3 gxh4 20.Bh3 hxg3+ 21.Kg2 exf3+ 22.Rxf3 Qe4 23.Bf4 -/+ 1.03) 14.a4 Be7 15.Qd2 g5 16.hxg5 hxg5 17.Bxg5? {White had better} (17.Na8 gxf4 18.Nb6+ +- 1.90) 17...Qxc7 18.Bxe7 Qxe7 19.c4 d4 20.Qf4 Nf6 21.Bxe4 (21.Nxc5 Qxc5 22.Qxf6 Qh5 23.Rfc1 Qh2+ 24.Kf1 Be8 25.Qf5+ Bd7 26.Qxe4 Rde8 27.Qd5 Bg4 28.Rc2 Re5 29.Qf7 Bh3 30.Bxh3+ Qxh3+ 31.Ke1 Qh1+ 32.Kd2 Qxa1 -+ 17.36) 21...Be6 (21...Qxe4 22.Qxe4 Nxe4 -+ 9.31) 22.Bf3 Qh7 23.Rfc1 Qh2+ 24.Kf1 Nh5 25.Qg5 d3 26.Nxc5 [diagram]
Reylinchx (1957)-Evilone (1898) Playchess.com Game 5min. 6/13/05
1.Nf3 d5 2.g3 e5 3.Bg2
{White
declines the gambit pawn at e5} e4 4.Nd4 c5 5.Nb3 Nc6 6.d3 f5 7.O-O
{a transposition into a reversed form of the Alekhines Defense Four
Pawns attack} Nf6 8.Bg5 Be6 9.dxe4 fxe4 10.f3 exf3 11.exf3 Be7 12.Re1 Qd7 13.Bxf6 gxf6 14.Qe2 Kf7 15.f4 c4 16.Qh5+ Kg7 17.N3d2 Rad8 18.Nc3 d4 19.Nce4 Bg4 20.Qh4
h6 (20...f5 21.Ng5 h6 22.Ne6+ Kf7 23.Nxd8+ Bxd8 24.Nxc4 Bxh4 (24...d3 25.Qxd8 Rxd8 -+ 5.15)) 21.h3 f5 22.Ng5 hxg5 23.Qxh8+ Rxh8 24.hxg4
gxf4 (24...Bb4 25.Rad1 fxg4 26.c3 dxc3 27.Ne4 Qf5 28.bxc3 Bc5+ 29.Nxc5 Qxc5+ 30.Kf1 gxf4 31.Rd5 Qf8 -+ 8.31) 25.Nxc4 fxg3 26.Ne5 Nxe5
27.Rxe5 fxg4 28.Rae1 Bf6 29.Rd5 Qc7 30.Re4 Qxc2 31.Rd7+ Kf8 32.Rf4
Qc1+ -+ [and it is mate in 3 after 33.Bf1 Qe3+ (34.Kg2 Rh2+ mate) 34.Rf2
Qxf2+ mate} 0-1 This transposes back into normal orthodox chess opening lines, however Black can still conduct a Kingside attack AS in the Accepted lines. See Black’s goals in the Accepted Lines above. B.Adithya (2040)-G. Yogesh (2268) Ch-Commonwealth, Mumbai 1/12/04 {A07: Réti Opening: New York and Capablanca Systems} 1.Nf3 d5 2.g3 e5 3.d3 {last book move} Be7 (3...Nc6 4. c3 =/+) 4.Bg2 c6 5.O-O Be6 6.e4 h5 (6...Nd7 7.d4 dxe4 8.Nxe5 =) 7.h4 Bg4 8.d4?? {not a good decision, because now the opponent is right back in the game} (8.Qe1 Bxf3 9.Bxf3 dxe4 10.dxe4 Nd7 +/=) 8...Nd7?? {forfeits the clear win} ({better is} 8...dxe4 {secures the win} 9.Nbd2 exf3 -+ (9...Bxf3?! 10.Bxf3 exf3 11.dxe5 -+)) 9.Qd3 Bxf3 (9...dxe4 10.Qxe4 Ngf6 11.Qe3 exd4 12.Qxd4 =/+) 10.Bxf3 g5? (10...dxe4 11.Qxe4 Ngf6 12.Qe2 +/=) 11.Bxg5 ({better is} 11.exd5!? cxd5 12.dxe5 Nxe5 13.Qb5+ Kf8 14.Bxd5 +-) 11...Bxg5 +/= 12.hxg5 Qxg5 13.Nd2 ({better is} 13.exd5!? Ne7 14.dxc6 bxc6 15.Nd2 +/-) 13...h4 = {Black threatens to win material: h4xg3} 14.Kg2 {White king safety dropped} (14.exd5!? {hxg3 15.Bg2 cxd5 16.Nf3 =) 14...Ne7 -/+ 15.Nc4?? {strolling merrily down the path to disaster} ({better is} 15.Rh1 O-O-O 16.Qe3 Qxe3 17.fxe3 -/+) 15...Ng6 ({better is} 15...dxc4 {seems even better} 16. Qxc4 O-O-O 17. Rh1 -+) 16. Nd6+ Kf8 17. Qb3?? { leading to a quick end} (17.Qa3 Nf4+ 18.Kg1 hxg3 19.Nf5+ c5 20.Nxg3 -+)
(21.Nc4 g2 22.Qxf7+ Kxf7 23.Bh5+ Kf8 24.Rfe1 Qxh5 25.f3 Qh2+ 26.Kf2 g1=Q#) 21...g2 Black resigns in anticipation of 22.Qh5 Rxh5 23.Bxh5 Qh4 24.f3 gxf1=Q+ 25.Kxf1 Qh1+ 26.Kf2 Qg2+ 27.Ke1 Qe2# 0-1 BigDario(1949)-Evilone(1922) Playchess.com Game 5min. 5/1/05
1.Nf3 d5 2.g3 e5
{Omega-Delta
Gambit} 3.d3 {White declines the gambit pawn at e5} Bd6 4.Bg2
Bg4 5.Nbd2 Qd7 6.O-O Bh3 {preparing to exchange off the Bishops to
weaken the White castled position} 7.e4 d4 8.c3 c5 9.cxd4 cxd4 10.Nc4
Bxg2 11.Kxg2 Nc6 12.Bd2 h5 13.h3 h4 14.g4 (14.Nxd6+ Qxd6 15.Nxh4
Qe6 16.Rh1 Nge7 17.Qg4 Kd7 18.Nf5 g6 19.Nxe7 Kxe7 20.Qxe6+
Kxe6 21.h4 +/- 0.93) 14...Nf6 15.Nh2 O-O-O 16.f4 Kb8 17.Nxd6 Qxd6
18.a3 Nd7 19.b4 a6 20.Rb1 f6 21.a4 exf4 22.Bxf4 Nce5 23.b5 a5 24.Qd2
b6 25.Rbc1 Rc8 {Black has to contest the c file} 26.Nf3 g5 27.Bh2
Kb7 {guarding the b6 pawn and getting out the indirect pin on the e5 N}
28.Rxc8 Rxc8 29.Rc1 Rxc1 30.Qxc1 Nxd3 31.Qc6+ Qxc6 32.bxc6+ Kxc6 33.Nxd4+ Kc5 34.Nc2 Kc4 {Black has penetrated the White Queen side and
will pick off the White pawn at a4} 35.Bc7 Kb3 36.Ne3 Kxa4 37.Nd5 b5
38.Bd8 Nf4+ 39.Nxf4
gxf4 40.Kf3
b4 41.Kxf4 b3
{White resigns
because the Black b pawn cannot be stopped from Queening -+ 12.58} 0-1 Nolucky(1865)-Evilone(1961) Playchess.com Game 5min. 5/16/05 1.Nf3 d5 2.g3 e5 {Omega-Delta Gambit} 3.d3 Nc6 4.Nbd2 Bg4 5.c3 Qd7 6.Bg2 Nf6 7.h4 Bd6 8.O-O Bh3 {playing to exchange off the B at g2 to weaken the White Kingside position} 9.e4 Bxg2 10.Kxg2 O-O 11.exd5 Nxd5 12.Ne4 f5 13.Nxd6 Qxd6 14.Qc2 Rae8 {centralizing the R and preparing for the e4 pawn push} 15.a4 Qg6 16.Qb3 Qd6 17.c4 Nf6 18.Ng5 h6 19.Nh3 b6 (19...Nd4 20.Qd1 Qc6+ 21.f3 Nh5 22.Rf2 Rd8 23.Kh2 Qg6 24.Rg2 f4 25.gxf4 Qc6 26.Rf2 Qf6 27.Qg1 Nb3 28.Rb1 Nxc1 29.Rxc1 Nxf4 30.Rc3 Nxd3 31.Rd2 Qxf3 32.Rg2 Qf6 33.Rg6 Qe7 -+ 3.72) (19...Qd7 20.Qd1 Nb4 21.f3 Nxd3 22.Ra3 e4 23.Kh2 Qe7 24.Rxd3 exd3 25.Nf4 Rd8 26.Qd2 Rfe8 -+ 3.19) 20.Be3 Kh8 21.Qd1 Ng4 22.Qe2 Nd4 23.Qd1 Qc6+ 24.Kg1 Nf3+ 25.Kh1 Nxh4+ 26.Kg1 (26.f3 Nxe3 27.Qe2 Nxf1 28.Rxf1 Ng6 -+ 6.81) 26...Qg2# 0-1
The Omega-Delta Gambit (1.Nf3 d5 2.g3 e5) is a second generation Omega Gambit (1. d4 Nf6 2.e4 ) from the Black side. Black’s main idea is to sacrifice the pawn at e5 to obtain quick development of the minor pieces and to achieve full development in a short time. Black’s main objective is to attack the White Kingside fianchetto position and play for checkmate. My main objective in this Black Gambit in both the Accepted and Declined Lines has been to play for checkmate, however there are other strategies that are possible such attacking down the middle of the board or playing to gain a space advantage to cramp White’s game. Also possible is an attack on both the wing and the center at the same time and also a Queenside attack. This gambit is still in the early stages of its development and more games and analytical work needs to be done to eliminate the flaws in this gambit so that you can play this Black side Omega gambit with full efficiency. Some chess players and chess masters may believe that this gambit is unsound, but I have found no direct refutation to prove that this gambit is unsound. But even if it is unsound, I still enjoy playing this fascinating Black side Omega Gambit. This journey into the unknown has not ended. May the “force be with you” my padawan (student). RecommendationTo learn how to play this gambit accurately you will have to look at some Omega Gambit games (1.d4 Nf6 2. e4) and Omega-Osiris Gambit games (1.d4 d5 2.Nf3 e5) with a Kingside fianchetto position. See references below to these 2 gambits. References PGN file with all the games in this article Omega Gambit article at www.chessville.com Omega-Osiris Gambit article at www.chessville.com Yahoo
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