Openings/Colle System
Colle System: Rhamphorhynchus Variation A04
1. Nf3 c5 2. e3 g6 3. d4 Bg7 4. dxc5 Qa5+
19 tournament games from this position · White wins 37%, draws 42%, Black wins 21%
Moves
| Move | Games | White · Draw · Black | Elo | Last |
|---|---|---|---|---|
| Nbd2 | 10 | 40% 30% 30% | 2299 | 2025 |
| c3 | 5 | 20% 80% | 2431 | 2026 |
| Bd2 | 3 | 67% 33% | 2124 | 2024 |
| Qd2 | 1 | 100% | 2253 | 2021 |
Top games
| Fridman, D2581–Ernst, S2523 | ½-½ | 2nd Bundesliga Nord 25-26 | 2026 |
| Slipak, S2452–Alonso, S2508 | ½-½ | 89th ch-ARG 2014 | 2014 |
| Kazhgaleyev, M2503–Zhalmakhanov, Ramazan2413 | ½-½ | Astana Zhuldyzdary Open A | 2023 |
| Midoux, S2321–Degraeve, Jm2587 | ½-½ | ch-FRA Accession 2017 | 2017 |
| Slipak, S2400–Acosta, Pablo Ismael2491 | ½-½ | Magistral 70 Panno WCh | 2023 |
| Gusain, H2528–Nayak, Rajesh2278 | ½-½ | 44th TCh-IND 2025 | 2025 |
| Luczak, Filip2326–Kuzmicz, K2466 | ½-½ | European Rapid 2022 | 2022 |
| Horvath, Cs12501–Gaal, Zsoka2278 | 1-0 | Kallai Gabor Mem Blitz | 2022 |
| Kaenel, H2310–Georgiadis, N2441 | 0-1 | TCh-SUI 2014 | 2014 |
| Martinez Duany, L2483–Morales Garcia, S2234 | 1-0 | 33rd Carlos Torre Mem | 2023 |