50 practical repertoires2524 variations for White and Black, with more room to grow.
Opening lab · Free to trainKnow your opening.
Know your opening.
Recall it under pressure.
Build a practical repertoire one position at a time. Your opponent plays the other side; you make the decisions that need to become automatic.
Next moveDevelop with tempo
Find the move your repertoire is built around.
2524opening variations
ready to train
ready to train
Adaptive reviewMissed lines return quickly; clean reps earn space.
Daily tactics stayCalculation and opening memory now live in one habit.
Course library
Choose your next weapon.
Practical repertoires with distinct main lines, sidelines, gambits, and structural variations.
C60-C99125 lines
whiteRuy Lopez
Build lasting pressure on e5 and learn the major Spanish structures, sidelines, and tactical branches.
Central pressurePatient buildupStrategic tension
B10-B1963 lines
blackCaro-Kann Defense
Meet 1.e4 with a sound center, an active light bishop, and clear counterplay against every major setup.
Sound structureFree the bishopTimed breaks
C50-C59103 lines
whiteItalian Game
Develop quickly, pressure f7, and choose between quiet maneuvering and direct central action.
Fast developmentCentral breaksKing safety
C00-C19104 lines
blackFrench Defense
Build a resilient pawn chain and attack White's center through the Advance, Tarrasch, Winawer, and sidelines.
Pawn chainsQueenside breaksCounterpressure
D02-D0325 lines
whiteLondon System
Reach familiar structures while learning the concrete replies that keep the system ambitious.
Stable centerSafe developmentKingside plans
D20-D69103 lines
whiteQueen's Gambit
Challenge d5 immediately and learn the accepted, declined, exchange, and structural branches.
Central pressureMinority attackActive pieces
B41-B4318 lines
blackSicilian Kan
Use a flexible ...a6 and ...e6 shell to meet White's setup without premature commitments.
Flexible setupQueenside spaceTimed counterplay
B20-B99103 lines
whiteSicilian Toolkit
Prepare for the Sicilian's main systems and practical sidelines from one searchable course.
InitiativeOpen filesPractical pressure
B90-B9933 lines
blackSicilian Najdorf
Learn the English Attack, Poisoned Pawn, classical setups, and the move-order details behind ...a6.
Flexible ...a6Queenside playDynamic tactics
C25-C2945 lines
whiteVienna Game
Keep a calm positional setup and the sharp Vienna Gambit available from the same move order.
Flexible centerKingside pressureNatural development
C44-C4548 lines
whiteScotch Game
Open the center early and use quick development to make every tempo count.
Open centerRapid developmentActive queen
B70-B7957 lines
blackSicilian Dragon
Fianchetto the dark bishop and prepare for the Yugoslav Attack's opposite-side race.
Long diagonalExchange sacrificeCounterattack
Understand the position
Every line comes with a plain-language plan, not just a string of moves.
Play your side
The opponent replies automatically. You supply every move in your repertoire.
Return at the right time
Clean reps wait longer. Missed lines return quickly until the move becomes automatic.