Albin Countergambit: Lasker Trap

The famous underpromotion. After 4.e3?? Bb4+ 5.Bd2 dxe3, White's natural 6.Bxb4 allows 6...exf2+ 7.Ke2 fxg1=N+!, a knight, not a queen, winning material.

• Learn–Easy Memory: drill the points where your lines split.
• Practice–Play whole lines against an opponent that follows your book.
• DrillAll courses–Spaced review of every course's due moves.
• Time–Your prompts against a 60-second clock.
• PuzzlesAll coursesReal games from your positions: find the missed move.
• Arena–Rated games from this opening. Leaving prep costs rating.