
How We Index 342 Million Chess Positions for Millisecond Lookups
How a chess-specific insight about material changes gave us 93% cache hit rates - validated on 873,000 positions from Magnus Carlsen's games.
Train tactics in repeatable cycles that sharpen pattern recognition and lead to real rating gains. Join thousands of players using Disco Chess to automate repetition, accuracy checks, and progress tracking, so you can focus on solving puzzles.

Solve puzzle sets in repeated cycles. Each round, you'll get faster and more accurate as patterns become automatic.
Learn moreTrack accuracy, solve time, and efficiency. See exactly how your pattern recognition improves cycle over cycle.
Learn morePuzzles you get wrong enter an Anki-style review queue. Spaced repetition ensures weaknesses become strengths.
Learn more170+ curated sets by tactical theme. Target forks, pins, skewers, or any motif you want to master.
Learn moreThe Woodpecker Method helped Hans Tikkanen achieve three GM norms in seven weeks. Disco Chess automates the entire process: cycle tracking, performance analytics, and mistake review, so you can focus purely on solving puzzles.
Pick a puzzle set, start solving, and Disco Chess handles the rest. Automatic cycle tracking, progress analytics, and instant feedback. No spreadsheets, no manual timers, no complicated setup. You focus on tactics.

Each cycle, you'll solve the same puzzles faster and more accurately. Our efficiency metric shows exactly how much you've improved compared to your first attempt. Real, measurable progress you can see.
Track your consecutive training days with hot streaks. Set daily goals (5, 10, 30, or 60 minutes) and watch your consistency grow. Small daily sessions compound into massive improvement over time.
The Woodpecker Method is the training approach that helped Hans Tikkanen achieve three GM norms in seven weeks. Disco Chess automates the entire process so you can focus on what matters: solving puzzles.
Insights and comparisons to help you train smarter.

How a chess-specific insight about material changes gave us 93% cache hit rates - validated on 873,000 positions from Magnus Carlsen's games.

Disco Chess adds 170+ carefully curated puzzle sets organized by tactical theme and skill level, performance analytics with tactical weakness analysis, and customizable daily training goals.

We've added Anki-style spaced repetition for the puzzles you get wrong. Now your mistakes become your fastest path to improvement.
Join Disco Chess and experience the most effective way to improve your tactical vision. Free to start, easy to master.