Never forget an opening line again
GambitLab teaches you openings against the moves real opponents actually play — then drills them with FSRS spaced repetition so they stick for good.
No card required · 7-day full access · Cancel anytime
- 28+
- Curated courses
- 90%+
- Target recall
- 100M+
- Real-game moves
Italian Game
- 1.e4e5
- 2.Nf3Nc6
- 3.Bc4Bc5
- 4.c3Nf6
✓ Correct — well played!
Next review in 4 days
Why GambitLab
Built to make openings stick
Everything chessreps does — plus real lessons, an ECO-indexed library, and the best spaced-repetition engine in chess.
True FSRS spaced repetition
Cards are scheduled by the modern FSRS algorithm and keyed to the board position, so transpositions never double your work. Review less, remember more.
Real opponent moves
Lines are built from millions of real games, so you train against what people actually play — not dusty theory you’ll never face.
Four ways to train
Learn a line, practice it, drill it from memory, and beat the clock in Time Trials. Each mode reinforces the last.
Progress reports that matter
See accuracy over time, your review forecast, a mastery heatmap, and exactly where your repertoire is weak — with a weekly digest in your inbox.
ECO-indexed library
Browse and filter by opening, color, and skill tier. Every course is annotated with plans and ideas for both sides.
In your language
GambitLab is available in English, Português, and Español — board, lessons, and reports included.
The training loop
Learn it. Drill it. Own it.
A proven four-stage loop that turns shaky theory into automatic recall.
Learn
Walk through a line move by move with explanations of the ideas behind each one.
Practice
Play the line with gentle hints. Wrong moves are taken back so you build the right pattern.
Drill
Recall the line from memory. Spaced repetition resurfaces it right before you’d forget.
Time Trials
Race the clock to prove your recall is instant — and climb the leaderboard.
Getting started
From zero to a complete repertoire
Pick your openings
Choose from 28+ curated courses for White and Black, tagged by skill tier — or import your own.
Train a few minutes a day
GambitLab serves the exact positions you’re about to forget. Short sessions, real retention.
Watch your rating climb
Stop losing in the first 10 moves. Track your progress with reports built for improvement.
The library
A course for every opening
Classic systems, sharp gambits, and rock-solid defenses — for White and Black, at every level.
Italian Game
This is-a one-a spicy-a meatball! 🍝 Mamma mia!
Sicilian Defense
Some call it the Rolls-Royce of openings. The sharpest, deepest way to fight 1.e4.
London System
Play this and you'll make a few enemies — the London is so solid Black can do almost nothing about it.
Caro-Kann Defense
Fight back against 1.e4 by quietly preparing to strike at the center.
French Defense
Lock your bishop in jail, then spend the game proving it was all part of the plan.
Vienna Gambit
Sacrifice a pawn on move three for a powerful position — then win it back three moves later.
Ruy Lopez
The most solid opening on the site. If you want to win games, start here.
King's Indian Defense
PLEASE don't click this unless you know what you're doing.
Pricing
One simple plan. Everything included.
All openings, all training modes, all reports. Start with a 7-day free trial — no card required.
7-day free trial, then the price above. Cancel anytime.
Everything in GambitLab Pro:
- All 28+ opening courses (and counting)
- FSRS spaced-repetition training
- Learn, Practice, Drill & Time Trials
- Progress reports + weekly digest
- Engine evaluation on every move
- English, Português & Español
FAQ
Questions, answered
What is spaced repetition, and why does it matter for openings?
Spaced repetition shows you each position right before you’d forget it. GambitLab uses FSRS — the most accurate open algorithm available — so you reach high recall with far fewer reviews than flashcards or rote practice.
Do I need to be an advanced player?
Not at all. Courses are tagged Beginner, Intermediate, and Advanced, and every line comes with plain-language explanations of the plans for both sides.
Can I import my own repertoire?
Yes — you can import lines from PGN and Lichess studies, and GambitLab will turn them into spaced-repetition drills automatically.
How much does it cost?
GambitLab Pro starts at $5.99/month, with discounts for quarterly and annual billing. Every plan starts with a 7-day free trial and you can cancel anytime.
Which devices are supported?
GambitLab runs in any modern browser and installs as an app on phones and tablets. Your progress syncs everywhere.
Is my first lesson really free?
Yes. You can try the opening lines of every course for free, and the 7-day trial unlocks everything with no card required.
Your opponents are still memorizing. You’ll just know.
Join GambitLab and build a repertoire that holds up under pressure.
No card required · Cancel anytime