Everything on this page comes from our Berlin Defense guide. You are Black: learn the 9 lines, drill 18 decisions, then play the bot. The Berlin is not an automatic draw. You need to know when to trade queens, when to keep pieces on, and when a white knight on e5 is a target.
Nine lines, one at a time: six you play as Black, three as White. Step through the moves and the comment for each half-move appears as you reach it. Finish a line and its checkmark stays in your browser.
Keyboard: ← → step through the moves. Click any move chip to jump.
Where this comes from: every line, comment, and engine number in Learn and Drill is drawn from our Berlin Defense guide. That includes +0.15 for Qxd8+, -3.90 for Qd4, -2.29 for Nc4, +0.00 for Nbd4, and +0.17 for Ne2.
This is the core of the trainer. Eighteen positions across six themes: book moves, plans, traps, punishments, structure, endgame echoes. Every one of the 9 lines from Step 1 is drilled at least twice, and the order is shuffled on each run so you answer from the board rather than memory of the queue. Click or drag a piece to play your answer. A wrong move gets a concrete refutation, and hints come in two stages before the answer is offered. Your score, streak, and solved drills stay in this browser.
Keyboard: Enter next drill · H hint · R reset the position.
Now play it out as Black. Pick a variation, set the bot strength with the seven named levels or the Elo slider from 600 to 2500, and start. The coach card watches your moves and speaks up when the game reaches a position from the guide. Run the review when it ends.
Six Berlin positions from the guide and its book, each with a board-checkable goal for both colors. Picking one restarts the board at that variation position.
Four directions, each with a reason. Everything below links to a page that exists today.
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