Are You Reti for an Opening Trap? by FM Dennis Monokroussos
The Reti is a slow-burn opening, but it doesn’t mean that Black can just do anything against it. The line Black chose with ...c6, ...d5, and ...Bg4 is well known and theoretically sound, but after 5.Ne5 he must play 5…Be6. It's easy to miss such a move if one doesn’t already know about it, and indeed Black played 5...Bf5. It’s natural, logical, and…bad. White did a fine job of punishing Black, and it’s just the sort of trap that is likely to catch many victims. Reti players should include this in their arsenal, while Black must be sure to learn the 5...Be6 variation if they reach the position after 5.Ne5 in their games.