Symmetrical Variation, Botvinnik System

The Botvinnik System is a White setup built on pawns at c4 and e4 combined with a kingside fianchetto, usually completed with Nc3, d3 and Nge2. The pawn pair fixes control of d5 and discourages Black's freeing ...d5. The cost is that d4 can no longer be covered by a pawn, so the square becomes a natural post for a black knight. The setup can be adopted against many Black defenses. Here it arises from the Symmetrical Variation, with both sides fianchettoing their king's bishop, and this move order passes through 2. e4, the Staunton-Cochrane line. White's usual follow-up is Nge2, d3 and O-O, preparing f4 for kingside expansion or a queenside push with b4.

The engine considers the position balanced, and White scores somewhat better in practice. The most common reply is 5...d6, a flexible setup that keeps the center closed. 5...e6 prepares ...Nge7 and contests d5 from a distance, and Black's results with it are level. 5...Nf6 is the third main choice. The engine also favors 5...a6 and 5...Rb8, which prepare ...b5 to strike at c4. Play is generally slow and maneuvering rather than forcing.