The Chebanenko Variation, Advance System is a variation of the Slav Defense, catalogued as ECO D15. The line runs 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. c5, reaching the position shown below after 9 half-moves.
Both sides have pawns in the centre (White on d4, Black on d5). Development is level at two minor pieces each. It is Black to move after five moves.
On the Slav Defense generally: A solid defense to the Queen's Gambit. Black supports d5 with c6 while keeping the bishop active.
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The Chebanenko Variation, Advance System goes 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. c5. It is a variation of the Slav Defense and is catalogued as ECO D15.
The Chebanenko Variation, Advance System is ECO D15. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Slav Defense.
Stockfish evaluates the position after 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. c5 at +0.29 at depth 18, which is a slight pull for White, within normal opening margins. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
Both sides have pawns in the centre (White on d4, Black on d5). Development is level at two minor pieces each. It is Black to move.