Tree path 3 levels Zukertort Opening › Sicilian Invitation › Colle System: Rhamphorhynchus Variation
- Chess Codex
- Zukertort Opening A04
- Sicilian Invitation A04
- Colle System: Rhamphorhynchus Variation A04 you are here
Colle System: Rhamphorhynchus Variation
Overview
Colle System: Rhamphorhynchus Variation is a variation within the Flank Openings family, indexed as ECO A04.
The Flank Openings group covers flank openings — systems that delay the central pawn break and instead develop pieces and pawns on the wings.
Play reaches this position via 1. Nf3 c5 2. e3 g6 3. d4 Bg7 4. dxc5 Qa5+, after 8 plies of opening development.
It is a variation of Zukertort Opening: Sicilian Invitation, which itself descends from the root opening Zukertort Opening.
Step through the moves on the interactive board below, review the live Lichess statistics, or play this position against Stockfish at one of six difficulty levels.
- ECO code
- A04
- Group
- Flank Openings (A)
- Plies
- 8
This overview is generated automatically from the opening's metadata. Know this line well? Write a description — submissions are reviewed before publishing.
Statistics from Lichess
14,152 games · White 42.9% / Draw 5.6% / Black 51.4%
| Moves | Games | W / D / B |
|---|---|---|
| c3 | 5,352 | |
| Bd2 | 3,398 | |
| Nc3 | 2,189 | |
| Nbd2 | 2,144 | |
| Qd2 | 916 | |
| Nfd2 | 142 | |
| b4 | 10 | |
| Ke2 | 1 |
Source: Lichess Opening Explorer · cached 2026-09-26 00:35:00
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