| Sicilian c3 with 2... d5 | Exchange System | 1. e4 c5 2. c3 d5 3. ed5 Qd5 4. d4 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Kirilov Gambit | Schlechter Variation |
Isolani Variation | ...Nc6 Declined | ...Nc6 Accepted | Fianchetto Variation |
...Nf6 Declined | ...Nf6 Accepted |
| ... cd4 | ... Nc6 | ... g6 | ... Nf6 | ||||
| 5. cd4 | 5. dc5!? | 5. dc5 | 5. dc5 | ||||
| ... Nc6 | ... e6 (h) | ... Qc5 | ... Qd1 | ... Qc5 (m) | ... Qc5 | ... Qd1 | |
| 6. Nf3 | 6. Nf3 | 6. Na3 | 6. Kd1 | 6. Nf3 | 6. Nf3 | 6. Kd1 | |
| ... Bg4 | ... e5 (d) | ... Nc6 | ... e5?! (k) | ... Bf5 (l) | ... Nf6 | ... Nc6 (p) | ... e5 (t) |
| 7. Nc3 | 7. Nc3 | 7. Nc3 | 7. Nb5 | 7. Nf3 | 7. Be3 (n) | 7. Na3 | 7. b4 |
| ... Bf3 (a) | ... Bb4 | ... Bb4 (i) | ... Qb6 | ... 0-0-0 | ... Qa5 (o) | ... Qa5 (q) | ... Nc6 (u) |
| 8. gf3 | 8. Bd2 | 8. Bd3 | 8. Be3 | 8. Ke1 | 8. Na3 | 8. b4!? (r) | 8. Nf3 (v) |
| ... Qd4 | ... Bc3 | ... Nf6 (j) | ... Qd8 | ... e5 | ... Nc6 | ... Qc7 | ... a5 |
| 9. Qd4 | 9. Bc3 | 9. 0-0 | 9. Qd8 | 9. Be3 | 9. Nc4 | 9. Nb5 | 9. Bb5 |
| ... Nd4 | ... e4 (e) | ... Bc3 | ... Kd8 | ... Nf6 | ... Qc7 | ... Qb8 | ... Bd7 |
| 10. Nb5! | 10. Ne5 | 10. bc3 | 10. 0-0-0 | 10. Bb5 | 10. Qa4 | 10. Be2 (s) | 10. Re1 |
| ... Nc2ch (b) | ... Ne5 (f) | ... 0-0 | ... Bd7 | ... Ng4 | ... Bd7 | ... a6 | ... ab4 |
| 11. Kd1 | 11. de5 | 11. Re1 | 11. Bc4 | 11. b4 | 11. Nb6 | 11. Nd4 | 11. cb4 |
| ... Rc8 | ... Ne7 | ... b6 | ... Nh6 | ... Bd7 | ... e4 | ||
| 12. Na7 | 12. Be2 | 12. Bg5 | 12. Bh6 | 12. 0-0 | 12. Bd2 | ||
| ... Rc5 | ... 0-0 | ... Nd7 | ... gh6 | ... e5 | ... Be7 | ||
| 13. Rb1 (c) | 13. 0-0 | 13. Be4 | 13. Bf7 | 13. Nc6 | 13. Ng5 | ||
| ... Bf5 (g) | ... Qd6 | ... a6 | ... Bc6 | ... 0-0 | |||
| 14. Qa4 | 14. d5 | 14. Be6 | 14. Qb3 | 14. Ne4 | |||
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(a) Queen moves suck, since black gets blown away after 8. d5. E.g. 7 ... Qa5 8 d5 Ne5 (8 ... O-O-O 9 Bd2 Nb4 10 Rc1 Kb8 11 Nb5 +- ; 8 ... Rd8 9 Bd2 Ne5 10 Nxe5 +- ; 8 ... Nb8 9 Bc4 Nd7 10 Qb3 ) 9 Nxe5 Bxd1 10 Bb5+ Kd8 11 Nxf7+ Kc8 12 Kxd1 +- ; 7 ... Qh5 8 d5 Bxf3 (8 ... O-O-O 9 Qa4 Bxf3 10 gxf3 Ne5 (10 ... Qxf3 11 dxc6 +- ) 11 Be2 Nxf3+ 12 Bxf3 Qxf3 13 Rg1 +- ) 9 gxf3 O-O-O 10 Qa4 ; 7 ... Qe6+ 8 Be3 O-O-O 9 d5 Qf6 10 Qc1 +- (b) 10 ... Ne6 11 f4 g6 12 Bg2 O-O-O (12 ... Bg7 Dyckmans - Abolianin, Ghent op 1995 13 Bxb7!? ) 13 Be3 a6 14 Rc1+ Kb8 15 Ba7+ Ka8 16 Bb6 +- Mikhalchishin - Sellos, Primorsko 1978 ; 10 ... e5 11 Nc7+ Kd7 12 Nxa8 Bb4+ 13 Kd1 +/= Ne7 14 f4!? Cirabisi - Leoncini, Imperia 1988 ; 10 ... O-O-O 11 Nxd4 Rxd4 12 Be3 Rd7 (12 ... Ra4 13 Rc1+ Kd8 14 Bb5 Rachels - Einarsson 1981 ; 12 ... Rd6 13 Bxa7 Nf6 14 Rc1+ ) 13 Bb5 Rc7 14 Bxa7 e6 (14 ... e5 15 Bb6 Bb4+ 16 Kd1 ) 15 Bb6 Bb4+ (15 ... Rc2 16 O-O Rxb2 (16 ... Ne7 17 Rac1 Rxc1 18 Rxc1+ Nc6 19 Ba5 (19 a4 Kb8 20 a5 ) 19 ... Bd6 20 Bxc6 ) 17 Rfd1 Be7 18 Bd7+ ) 16 Kd1 Nf6 ; 10 ... Rd8 11 Nxd4 Rxd4 12 Be3 Rb4 13 a3 Rh4 14 Bb5+ +- Kiss - Porubszky, Tungsram 1991 ; 10 ... Nxb5 11 Bxb5+ Kd8 12 Bf4 +- Uppstrom - Sundman, 1959 (c) 13. Rb1 is Bill Orton's suggestion. Also playable is 13 Be3 Nxe3+ 14 fxe3 (d) 6 ... e6 leads to the next column, the Isolani Variation. (e) 9 ... Qe4+ 10 Qe2 Qxe2+ 11 Bxe2 exd4 12 Nxd4 +/- ; 9 ... exd4 10 Nxd4 Nf6 (10 ... Nxd4 11 Qxd4 Qxd4 12 Bxd4 +/- ) 11 Nxc6 Qxc6 12 Bxf6 Qxf6 13 Bb5+ Kf8 14 0-0 +/- (f) 10 ... Nh6 11 Bc4 Qd6 12 Qe2 Bf5 13 Rd1 Rd8 14 O-O O-O 15 h3 +/- Ostermeyer,Peter - Kaiser,Wolfgang, Germany 1987 (g) 13 ... Qe6 14 Qd4 Qg6 15 Rfe1 Be6 Pavasovic - Starostits, Bled 2002 (15 ... Nc6 16 Qe3 Bf5 17 Rad1 Rad8 18 h4 +/= Smagin,S - Yagupov,I, Moscow (1) 1995 ) 16 Bc4! ; 13 ... Bd7 14 Qc1 Bc6 15 Rd1 Qe6 16 Rd6 Qf5 17 g4 Qc8 18 Qg5 Qc7 19 Rad1 +/- Van der Brink,P - Bezemer,A (2215), semi final (Enschede): ch-NED (1) 1993 ; 13 ... Rd8 14 Bc4 Qxd1 15 Rfxd1 Bg4 16 Rd6 Rxd6 17 exd6 +- Nc6 18 h3 Hudoba,Ondrej - Blaho,Stefan, SVK 1998 (h) 5 ... e5 6 Nf3 Nc6 7 Nc3 transposes to Schlecter Var ; 5 ... Nf6 6 Nf3 e6 (6 ... Nc6 7 Nc3 followed by pushing the d pawn ; 6 ... g6 7 Nc3 Qd8 8 Bc4 Bg7 9 Ne5 Castaldo - Mastrorilli, Torino,ITA 1998 ) 7 Nc3 transposes to standard IQP games above ; 5 ... g6 6 Nf3 Nf6 (6 ... Bg7 7 Nc3 Qd8 8 Bc4 Nh6 Raubal - Karner, Austria 1998 ) 7 Nc3 Qd8 8 Bc4 Bg7 9 Ne5 Castaldo - Mastrorilli, Torino,ITA 1998 (i) 7 ... Qa5 8 Bc4 Nf6 9 O-O (9 a3!? Ne4 10 Qc2 Nxc3 11 bxc3 Be7 12 O-O O-O 13 Rb1 Hornung,Ruediger - Funke,Eckhard, Ruhrgebiet 1998 ) 9 ... Be7 Mirouze,Frederic - Fournier,Philippe, Creon 1997 (9 ... Nb4 10 Bd2 Qc7 11 Ne5 a6 12 Rc1 Seitaj,I (2420) - Adu,O, Moskou olm (1) 1994 ); 7 ... Qd6 8 Bc4 Nf6 9 O-O (9 a3 Be7 10 O-O O-O 11 Re1 De Dovitiis,Alejo - Gamarra Caceres,Car, Chaco (1) 1993 ) 9 ... Be7 10 Re1 O-O 11 a3 De Dovitiis,Alejo - Gamarra Caceres,Car, Chaco (1) 1993 (j) 8 ... Nge7 9 O-O Qa5 (9 ... Qh5 10 a3 Ba5 11 Ne4 Nf5 12 Bc2 Leite,C - Flores,Ju, Barreiro POR (8) 2000 ; 9 ... Qd8 10 Re1 O-O 11 Bxh7+ Kxh7 12 Ng5+ Kg6 13 Qg4 e5 14 Ne6+ 1-0 Dukurs,I - Kislicis,L, Moscow (1) 1970 ) 10 Bd2 Nd5 (10 ... Qd8 11 Re1 (Andersen,Erik Rune - Moller,Arne, Taastrup,DEN;Aktiv Alliancen (7) 1999) ) 11 a3 Be7 12 Re1 Pont Mulet,Antonio - Navarrete,Sebastian, Palma de Mallorca (1) 2002 ; 8 ... Qa5 9 Bd2 Nf6 10 O-O O-O 11 a3 Be7 12 Qe2 a6 13 Rac1 Qd8 14 Be3 Horther,Heinrich - Christ,Rene, Bayern 1998 ; 8 ... Qh5 9 O-O Nf6 10 a3 Ba5 11 b4 Bc7 12 h3 O-O 13 Be2 Roza,Peter - Kordahi,Nicholas, Canberra AUS (3) 2001 (k) 6 ... Nf6 7. Nf3 transposes to the Four Knights Variation. ; 6 ... e6 7 Nb5 Qe5+ 8 Be3 Nf6 9 Nf3 Qb8 10 g3 ; 6 ... Qe5+ 7 Be3 Nf6 8 Nf3 Qb8 ; 6 ... Qa5 7 Nf3 Bg4 8 Be2 Nf6 9 Bf4 Nd5 10 Nc4!? (10 Bd2 Rd8 11 c4 (oo) ) 10 ... Qd8 11 Bg3 +/=
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(l) 6 ... Nf6 transposes to next note ; 6 ... e5 7 b4 a5 8 Bd2 (8 Bb5 ) 8 ... axb4 9 cxb4 Be6 10 a3 Nd4 11 Nc3 Nb3 12 Nb5 0-0-0 13 Ra2 +/= Stevandic - Jurkiewicz, Patras GRE 1999 ; 6 ... g6 7 Nf3 Bg7 8 Be3 Bf5 9 Bb5 0-0-0+ 10 Nbd2 Nf6 11 Bxc6 bxc6 12 Nd4 Bd7 13 Ke2 +/- Acs,P - Hovanecz,L, Hungary 2 tt (1) 1992 (m) 5 ... Qxd1+ makes less sense here, since the fianchettoed bishop doesn't attack the advanced c-pawn. 6 Kxd1 Nf6 7 Nf3 Bg7 (7 ... Bg4 8 Be3 Bg7 9 Bb5+ Nbd7 10 c6 +/- ) 8 Be3 +/- Ng4 9 Nbd2 0-0 10 Bd3 (10 Bb5!? ) 10 ... Nxe3+ 11 fxe3 Nc6 12 Ke2 Potkin - Zaitsev, St Petersburg 1998 (n) 7 Na3 is also very good. 7 ... a6 (7 ... Nc6 8 Nb5 Qb6 9 Bf4 +- Nohr - Koerholz, 2002 ) 8 Be3 Qc7 9 Nc4 Nbd7 10 a4 Bg7 11 a5 +/- Ng4 12 Bd4 e5 13 Bb6 Nxb6 14 Nxb6 Qc5 15 Qa4+ Kf8 16 Qa3 Qxa3 17 Rxa3 Rb8 18 Ra4 +/- Krupkova,P (2315) - Mahini,M, Elista olw (1) 1998 (o) 7 ... Qc7 8 Na3 a6 9 Nc4 Nbd7 10 a4 has transposed into Krupkova - Mahini, note (n). (p) 6 ... Bg4 7 h3 Bh5 8 Na3 Nbd7 9 Be3 Qc7 (9 ... Qc8 10 Be2 (10 g4!? Bg6 11 Bg2 ) 10 ... e6 11 Nb5 Shaked,T (2535) - Van der Wiel,J (2515), Wijk aan Zee NED: Hoogovens B (4) 1998 ) 10 Nb5 (10 Qa4 is also strong ) 10 ... Qb8 11 g4 Bg6 12 g5 +/- Vlassov,Nikolai - Avrukh,Boris, Moscow (5) 2002 ; 6 ... g6 7 Be3 Qa5 8 Na3 Nc6 see Yudasin - Gavrikov, URS 1987 in Fianchetto Variation note above. (q) 7 ... Ng4 8 Qe2 Bf5 9 h3 Bd3 10 Qxd3 Blatny - Wang, Thessaloniki 1988 ; 7 ... Bg4 8 Nb5 +- Rc8 9 Be3 Qh5 10 Nxa7 Ferron Garcia - Subai, Barcelona 1992 10 ... Rd8 11 Qa4 ; 7 ... e5 8 Be3 (8 Nb5 Qe7 9 b3 Bg4 10 Ba3 Qd8 11 Bd6 Rc8 (11 ... Bxd6? 12 Qxd6 Qxd6 13 Nxd6+ +- Blatny,P (2510) - Bonsch,U (2525), Brno (7) 1993 ) 12 Bxf8 Kxf8 13 Be2 +/= Blatny ) 8 ... Qe7 9 Bb5 Ng4 10 Qa4 Qc7 11 Nc4 Nxe3 12 Nxe3 Sermek-Caposciutti, Montecatini 1999 ; 7 ... g6 transposes into Finchetto Variation above
(r) 8 Bf4 is a good alternative. 8 ... Bg4 (8 ... Qf5 9 Bg3 a6 10 Bd3 Blatny - Basin, Trnava 1989 10 ... Qe6+ 11 Be2 g6 12 0-0 Bg7 13 Re1 Qd5 (14 Nc4 Be6 15 Nb6 +/-) ; 8 ... Nd5 9 Nc4 Qd8 10 Nd6+ exd6 11 Qxd5 +/= Godena,Michele
(s) Ragger-Titz, AUT 2002. Or 10 Be3 +/= Canal,Esteban - Euwe,Max, Zuerich (7) 1954
(t) 6 ... e6 7 b4 a5 8 a3 Nc6 9 Bb2 Ne4 10 Ke1 Be7 Hidegh - Kakuk, Budapest 1997 11 Bd3!? ; 6 ... Nc6 7 Bb5 Bd7 (7 ... Bf5 8 Nf3 0-0-0+ 9 Ke2 e5 10 Be3 Nd5 11 Bxc6 bxc6 12 Nxe5 Ramirez,JA - Jerez,Alfonso, Tres Peons Club 25th (6) 1996 ; 7 ... e5 8 b4 a5 (8 ... Bf5 9 Nf3 0-0-0+ 10 Ke2 Nd5 11 Bd2 Roeder,F - Stertenbrink,G, BLErlangen-Eng 1984 ; 8 ... Nd5 9 Nf3 Bf5 10 Bd2 0-0-0 11 Kc1 Fediashin,S - Minakov,JM, corr Tch10-SU (1) 1994 ; 8 ... Be7 9 Nf3 Bg4 10 Ke1 Amrein,Roland - Kopjonkin,Gennady, Zalakaros,HUN 1993 ) 9 a3 Bd7 10 Bb2 Paglilla,Carlos - Hoffman,Alejandro, Buenos Aires PRENAJ (2) 1993 ) 8 Be3 Ng4 9 Nf3 Nxe3+ 10 fxe3 g6 11 Nbd2 Bh6 12 Ke2 +/= Franz - Gerstenhauer, Germany 2002 ; 6 ... g6 7 Nf3 see Fianchetto Var above
(u) 7 ... Bf5 8 Bb5+ Nc6 9 Nf3 0-0-0+ 10 Ke2 Nd5 11 Bd2 +/= Roeder - Stertenbrink, Eng 1984
(v) 8 Bb5 is also good
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Revised 7/14/2007