Solved on Peck
Built for focused daily practice
Timed cycles, a review queue for misses, and streak tracking.
Peck is a free chess tactics trainer: repeat one puzzle set across cycles, and get faster every time.
Solved on Peck
Built for focused daily practice
Timed cycles, a review queue for misses, and streak tracking.
Puzzle source
Your games
From Lichess or Chess.com, or the Lichess puzzle database.
Your set
20–500
Puzzles per set, with your choice of cycles, rating, and theme.
Your games
The positions that cost you games are the ones worth repeating. Peck pulls them out of your Lichess or Chess.com games and trains them with the Woodpecker Method.
Lichess or Chess.com. Peck reads your recent public games; no password, nothing to install.
It runs in your browser and keeps only positions with one clearly right move: the wins you missed and the tactics you walked into.
Your mistakes become a Woodpecker set. Every cycle, the patterns that cost you games get a little faster to spot.
The tactics they found, the chances they missed, and what their slips allowed.
How it works
The Woodpecker Method in four steps. Make different sets for different goals; Peck keeps the results of every cycle.
Step 1 · Set up
Pick a theme, a rating range, and 20 to 500 puzzles. Those positions stay fixed.
Step 2 · Cycle 1
Work through the set without a countdown. Peck times each solve and records your accuracy.
Step 3 · Review
Wrong and skipped positions wait in your review queue until you solve them.
Step 4 · Cycle 2 and on
Run the same set again and compare each cycle’s time and accuracy with the last.
Inside Peck
Custom sets to train, a queue for misses, and charts that show your times coming down. Bring your friends along for a little extra motivation.

Build
Make the Woodpecker Method fit your goals. Build a fixed puzzle set you can return to, one cycle at a time.
Set your target rating and range, with an optional tactical theme.
Choose 20 to 500 puzzles to fit the time you have to practise.
Pick your number of cycles. Your positions stay the same each time.


Review
Give tricky positions another look. Your review queue keeps the puzzles you miss ready for another attempt.
Wrong and skipped puzzles go straight into your review queue.
Filter your queue by the theme you want to work on.
Missed positions stay in the queue until you solve them.


Progress
See what repeated practice is changing. Compare the same puzzle set across cycles to understand your progress.
Compare total completion time from one cycle to the next.
See accuracy per cycle and how you perform across tactical themes.
Find the positions you miss most often and give them extra attention.


Friends
Keep your own training routine and bring your friends along. Turn your next puzzle session into a chance to climb the league together.
Share your invite link or send a request by username.
Compare weekly and all-time XP in your friends league.
See your friends’ training stats, levels, and streaks once you connect.
Free with your Peck account.

Progression
You will solve the same puzzles a few times. Streaks, ranks, and leagues are there so the repetition feels rewarding, not like homework.

12
day streak
One session a day keeps it going. Miss a day and it starts over — a small reason to drop in tomorrow.
Rank and XP
Level 1210 XP a solve and 50 for a finished cycle, with bonuses for speed, streaks, and accuracy. Just for fun: XP never changes which puzzles you get.

Achievements
Earn them as you build streaks, finish cycles, and sharpen your accuracy.

Leagues
Compare weekly XP with your friends or everyone on Peck, or opt out anytime in settings and train at your own pace.
Starter sets
Start with a tactical theme or a rating band. The preset gets you moving; you can tailor the full set before training.
Train double attacks until the geometry is immediate.
Start this setSpot restriction tactics and pinned defenders faster.
Start this setInternalize the mating patterns that decide real games.
Start this setDrill forcing ideas where material gives way to initiative.
Start this setPractice long-line tactics that win material cleanly.
Start this setPunish unsafe back ranks before the chance disappears.
Start this setGuides
Everything you need to know before your first cycle.
FAQ
What to know before your first cycle.
Yes. Sets, cycles, review, progress charts, achievements, friends, and leaderboards all come free with an account, with no ads and no credit card.
Yes. Choose a username, then add friends by username or invite link. Once you connect, you can see each other’s training stats, levels, and streaks, and compare weekly and all-time XP in your friends league. Each player trains their own puzzle sets.
Peck lets you create multiple sets for different goals. Each set keeps the same positions between cycles, so your missed-puzzle review queue and speed and accuracy history stay meaningful.
Yes. Enter your Lichess or Chess.com username and Peck analyses your recent games with Stockfish in your browser. It keeps the positions with one clearly right move, the wins you missed and the tactics you walked into, and turns them into a Woodpecker set. No password needed.
From your own Lichess or Chess.com games, or from the Lichess puzzle database, filtered by theme and rating when you build a set.
Choose a set that fits the time you can train consistently. Peck supports sets from 20 to 500 puzzles and lets you choose the number of cycles, rating range, and an optional tactical theme.
Ready when you are