About this opening
Réti Opening: Anglo-Slav Variation is an opening in the Encyclopedia of Chess Openings,
classified under code A12. ECO group A (A00–A99)
covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached
after 7 half-moves from the
starting position, with the move sequence 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3.
It belongs to the Réti Opening family. Within that family this is a sub-variation (the Anglo-Slav Variation line).
The opening sequence in prose form: 1.c4 Nf6, 2.g3 c6, 3.Nf3 d5, 4.b3. From this position 5 named continuations are recorded in the encyclopaedia, each leading to a distinct theoretical line.
Use the interactive board above to walk through the moves position-by-position. Click any move in the navigation to step backwards, or use the keyboard arrow keys. The list of recorded continuations sits directly below the board. For statistical data — how often master-level players have reached this position, White's win-rate, draw frequency, Black's score — see the panel in the right column.
Caissly's coverage of A12 extends through every named sub-variation in this line and across all four locales (English, Spanish, Portuguese, Russian). Where editorial commentary exists for a specific variation it appears as the page body; otherwise the page presents the structural data, board, and statistics as shown here.