Practice the Berlin Defense in the Berlin Endgame, Anti-Berlin, and Mortimer Trap lines. Follow 9 lines from our Berlin Defense guide, try 18 board exercises, and play six positions against the bot.
Nine lines, one at a time: six you play as Black, three as White. Finish a line and its checkmark stays in your browser.
Keyboard: ← → step through the moves. Click any move chip to jump.
Where the moves come from: every line and position in this trainer comes 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 3000, 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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