How many lines should my White repertoire have?

Depends on rating. Under 1400, aim for 50–80 key positions covering the main defenses, 6–10 moves deep. 1400–1800 ELO: 100–150 positions, 8–12 moves deep. 1800–2200: 150–300 positions, 10–15 moves deep. Above 2200: full coverage with tournament-specific depth. The rule of thumb: if you cannot review your entire repertoire in a week, it is too large.

Should I play 1.e4 or 1.d4?

Neither is stronger objectively. 1.e4 produces more tactical, open games with clearer attacking plans (Italian, Ruy Lopez) and requires managing the Sicilian. 1.d4 produces slower strategic positions with the London System as a low-theory universal weapon. Play 1.e4 if you enjoy tactics and sharp calculation; 1.d4 if you prefer positional buildup and smaller theoretical commitments.

Can I have a completely system-based White repertoire?

Yes. The London System (1.d4 + 2.Nf3 + 3.Bf4) works against almost any Black setup with one structure. Pair it with the King's Indian Attack (1.Nf3 + 2.g3 + 3.Bg2 + 4.O-O + 5.d3 + 6.Nbd2 + 7.e4) for games starting 1.Nf3 and you have a full system-based repertoire with minimal theory. Carlsen has used both systems in World Championship games. The tradeoff is smaller theoretical chances for less study time.

How often should I update my repertoire?

After every rated game: 5–10 minutes of opening review and patch any deviation you encountered. Monthly: 1 hour of reviewing the last 20 games, noting which defenses you faced and which scored well for you. Every 3 months: deep maintenance — extend depth in frequent lines, prune unused branches, adjust for rating progress.

What if I switch openings halfway through building my repertoire?

Lose as little as possible from the prior work. If switching from Italian to Ruy Lopez, the underlying 1.e4 e5 2.Nf3 Nc6 structure stays, only the 3rd move changes — most of your strategic understanding transfers. Full switches (1.e4 to 1.d4) require starting almost from scratch, so commit to one first move for at least 6 months before considering a change.

How to Build a Complete White Repertoire from Scratch

Disclosure: ChessAtlas is our product. This guide is a practical walkthrough for building a White repertoire; it works with any platform. Readers should weigh the perspective accordingly.

A complete White repertoire covers every Black defense you face, with memorable plans and the right depth for your rating. This guide walks from choosing your first move to maintaining the final file. Expect 2 to 4 weeks of focused work to build the framework, then ongoing maintenance as your games feed back into the repertoire.

This article is a practical walkthrough. For the broader framework on why repertoires stick (not just how to build them), see How to Build a Chess Opening Repertoire That Actually Sticks. For the 30-day execution plan, see the 30-Day Pick-Learn-Drill-Improve framework.

Step 1: Choose Your First Move (1.e4 or 1.d4)

Starting position, choose 1.e4 or 1.d4 — The choice between **1.e4** and **1.d4** shapes every branch of your repertoire. Tactical players typically prefer 1.e4; positional players prefer 1.d4. Both are fully viable at any rating.

Play 1.e4 if:

You enjoy open positions with early piece activity and tactical opportunities
You like clear attacking plans (Italian, Ruy Lopez, Scotch)
You have time to study Anti-Sicilian theory to handle 1...c5

Play 1.d4 if:

You prefer slower strategic games and positional pressure
You want lower total theory load (the London System handles everything)
You dislike the Sicilian theoretical arms race

Neither is better. Pick based on style, stick with it for at least 6 months before considering a switch.

Step 2: Pick Your Main Systems

The 1.e4 path

vs 1...e5: Italian Game (most practical) or Ruy Lopez (more ambitious, heavier theory)
vs 1...c5 (Sicilian): Anti-Sicilian, Alapin (2.c3) is the simplest; Rossolimo (3.Bb5) for positional players. See How to Beat the Sicilian Defense
vs 1...e6 (French): 3.Nc3 (Classical) or 3.Nd2 (Tarrasch). Both are solid.
vs 1...c6 (Caro-Kann): Advance Variation (3.e5) for club players. See How to Beat the Caro-Kann
vs 1...d5 (Scandinavian): 2.exd5 Qxd5 3.Nc3, standard
vs 1...Nf6 (Alekhine): 2.e5 Nd5 3.d4 d6 4.Nf3, main line
vs rare moves (Pirc, Modern, 1...a6): 2.d4 + 3.Nc3 standard setup

The 1.d4 path

vs 1...d5 (QGD, Slav): 2.c4 (Queen's Gambit), most ambitious
vs 1...Nf6: 2.c4 committing to mainline theory, or 2.Nf3+3.Bf4 (London transposition)
vs 1...Nf6 2.c4 g6 (KID): see How to Beat the King's Indian
vs 1...Nf6 2.c4 e6 3.Nc3 Bb4 (Nimzo): 4.e3 Rubinstein or 4.Qc2 Classical
Universal backup: the London System (1.d4 + 2.Nf3 + 3.Bf4) works against almost everything

Step 3: Build Your Tree in a Repertoire Tool

Use Lichess Studies, ChessAtlas, Chessable, or similar. Organize by Black's reply, not by ECO code (ECO codes are harder to mentally retrieve during games).

For each Black response, record:

Your chosen main line (8 to 12 moves deep for 1400 to 1800; deeper for higher ratings)
The core plan in one sentence: "the idea here is..."
Pawn breaks and key piece placements
One or two main sideline responses

Step 4: Drill With Spaced Repetition

FSRS spaced repetition via ChessAtlas or Chessdriller handles the review schedule automatically. 15 to 20 minutes daily covers a starter repertoire of 50 to 80 key positions. See why spaced repetition works for chess.

Priority order:

Week 1: your main line against 1...e5 (or against 1...d5 if playing 1.d4)
Week 2: your response to the second-most-common Black setup at your rating
Week 3: coverage of the less common defenses (one plan per defense)
Week 4: patch gaps from your actual games

Step 5: Close the Loop with Real Games

Every rated game either confirms your repertoire works or reveals a gap. The workflow: play, import, find deviation, patch, drill. See the full deviation detection workflow.

ChessAtlas Deviation Finder automates steps 2 and 3 by parsing your Lichess/Chess.com games against your stored repertoire. Manual alternative: pipe games through Lichess Studies and compare move-by-move.

Common Repertoire-Building Mistakes

Memorizing moves without plans

If you cannot explain why move 7 is what it is, the memory evaporates the first time your opponent plays move 6 differently. Every repertoire line needs a plan. See how to memorize chess openings and actually remember them.

Creating an impractically large repertoire

Trying to prepare for every possible reply creates an unmaintainable file. Cap depth by rating band. See our rating-by-rating depth guide. A 500-line file looks impressive but is impossible to keep fresh.

Studying only master-level theory

Filter the Lichess Opening Explorer to your rating band, not 2400+ master games. Your opponents play different moves than Carlsen's opponents. Coverage of real opponent lines beats coverage of theoretical mainlines.

Not analyzing your own games

Every rated game is data. If you never review, you repeat mistakes and miss gaps. Commit to 5 to 10 minutes of opening analysis after every rated game.

Repertoire Maintenance (Ongoing)

Monthly: spend 1 hour reviewing your last 20 games. Note which defenses appeared, which lines scored well, which positions gave you trouble. Add or fix accordingly. Prune lines that never come up.

Every 3 months: extend depth in frequent lines by 3 to 5 moves; prune unused branches. A lean, frequently-rehearsed file beats a bloated, forgotten one.

Tools

For repertoire building + FSRS drilling + automatic game import: ChessAtlas. For GM-authored courses: Chessable. For free workflow: Lichess Studies + Chessdriller. See Best Chess Opening Trainers 2026 for the complete comparison.

Your Micro-Action Tonight

Decide: 1.e4 or 1.d4. Choose one system against 1...e5 (if 1.e4) or 1...d5 (if 1.d4). Write down the first 10 moves. Drill them tomorrow. Next week, add the second defense. Repeat.

For the full ecosystem: the repertoire framework pillar, the 30-day execution plan, and all opening landing pages with variations and traps. Or create a free ChessAtlas account and start building your White repertoire with automatic game import and FSRS drilling.