It’s one of the first anxieties of a beginning player: “good players must know dozens of moves by heart, I’ll never manage that.” Relax. That picture is false, and it discourages plenty of people for nothing. Here’s the real answer, with numbers, by level.

The short answer

For a beginner, four to six moves per opening is enough. Really.

Take the Italian Game: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3. Five moves. If you play them understanding the idea behind each one, you come out of the opening in a good position against the vast majority of opponents at your level. The rest of the game is played with principles, not with memory.

The trap is believing you have to cover everything. Your club opponent doesn’t know twenty moves of theory either. Most of the time, they leave the beaten path by the third or fourth move. At that point, your memory is no longer any use, and it’s your understanding that takes over.

What changes with level

The number of useful moves climbs, but slowly, and only when you really move up.

  • Up to 1000 Elo: five or six moves per line, and above all the opening principles. At this level, games are won and lost on tactical blunders, not on theory.
  • From 1000 to 1500: ten to twelve moves on your main lines, with the associated middlegame ideas. You start seeing the same structures come back.
  • Beyond that: there, yes, you need to know longer and more precise lines. But you won’t be alone at that level, and you’ll already have the habit of working.

In other words, heavy memorization is an advanced player’s problem. If you’re a beginner, it isn’t yours.

Why reciting isn’t enough

Imagine you learn ten moves by heart. Your opponent deviates on move 4 with a move you’ve never seen. What happens? Your list of squares no longer helps you. You’re lost at the exact moment you thought you were prepared.

Now, imagine you understood why each move is played. Your opponent deviates? You look at what their move leaves weak, you apply the principles, and you find a good move yourself. Understanding covers the infinity of positions; memory only covers a list.

That’s why the real question isn’t “how many moves” but “how many ideas.” An opening is three or four plans to remember, not thirty squares to recite.

A concrete example

Take the main line of the quiet Italian: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3. Instead of learning “e4, e5, Nf3, Nc6…” like a phone number, remember the ideas.

You play e4 to occupy the center. Nf3 develops and attacks e5. Bc4 points your bishop at f7, the weak spot in the enemy camp. c3 prepares the move d4 to build a big center later. d3 supports your e4 pawn and frees your other bishop. Five moves, five reasons. The day your opponent plays something other than 3…Bc5, you’re not lost: you look at what their move changes and apply the same ideas. That’s what knowing an opening means, and it’s far lighter to carry than a list of squares.

The method that makes the moves stick

Rote memorization evaporates. You read a line, you retain it that evening, you’ve forgotten it the following week. Whatever you don’t play actively slips away.

Playing the line beats reading it, which is the whole premise of Prologue: you run the opening yourself, first guided then from memory, until it comes out without effort, and each move carries its reason so you keep a logic rather than a string of squares. When your opponent deviates, you’ve got something to fall back on, because you learned the why alongside the what.

This question of memory is worth dwelling on further, especially the real usefulness of openings: read should beginners learn openings. And to lay your foundations, go through the guide to learning chess.

Frequently asked questions

How many moves do grandmasters know?

On their favorite lines, a professional player can know twenty to thirty moves, sometimes more. But they have years of practice behind them, and above all they understand each position deeply. Taking that number as a beginner’s goal makes no sense.

Is it better to know a few openings deeply or many superficially?

A few, deeply. A small but well-understood repertoire will give you better positions, more often, than a collection of skimmed openings. Pick one opening as White and one reply to 1.e4 and 1.d4 as Black, and really work on them.

How do I know how far to memorize a line?

Stop when you no longer understand why the moves are played. The day a line becomes “I play this move because the book says so,” you’ve gone too far for your level. Go back to the last position you understand and play by principles from there.

Is it a problem if I forget an opening between two games?

It’s normal if you learned it passively. An opening reviewed actively, a few minutes spread out over time, holds up much better. That’s the whole difference between rereading and replaying.