Position 1 of 7
1.e4
e4 begins the Four Knights Game plan: finish development cleanly before choosing a central or kingside plan.
C47Play as White2 lines to train
Learn the Four Knights Game
A symmetrical development system that turns small move-order choices into strategic advantages. White aims to finish development cleanly before choosing a central or kingside plan.
Main line
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3
1.e41…e52.Nf32…Nc63.Nc33…Nf64.Bb54…Bb45.O-O5…O-O6.d3
The idea
Why this opening works
The Four Knights Game gives White a clear route to finish development cleanly before choosing a central or kingside plan. Its recurring positions revolve around central control, piece coordination, and the timing of Bb5, so the repertoire rewards understanding the structure as much as remembering the move order.
What to remember
- Know the first 8 half-moves of the main line.
- Understand the purpose of your key moves before adding more theory.
- Practice the branches until you can respond without move-order guessing.
Move by move
The moves worth understanding
Theory sticks when every move has a job. Start with these ideas from the trainer.
Scroll down through 7 positions
- e2 → e4
- g1 → f3
Position 2 of 7
2.Nf3
Nf3 develops or reroutes the knight toward the central squares that drive this opening.
- b1 → c3
Position 3 of 7
3.Nc3
Nc3 develops or reroutes the knight toward the central squares that drive this opening.
- f1 → b5
Position 4 of 7
4.Bb5
Bb5 activates the bishop on a diagonal that supports the opening’s central and kingside ideas.
- e1 → g1
Position 5 of 7
5.O-O
O-O secures the king and brings a rook closer to the files that matter in this structure.
- d2 → d3
Position 6 of 7
6.d3
d3 reinforces the center and prepares the next piece-development or pawn-break decision.
- c3 → d5
Position 7 of 7
4.Nd5
Nd5 develops or reroutes the knight toward the central squares that drive this opening.
Trainer variations
Lines you’ll meet
These are representative branches from the drill, not a demand to memorize everything at once.
Line 11. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3
Line 21. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5
Quick answers
Four Knights Game questions
What is the Four Knights Game?
A symmetrical development system that turns small move-order choices into strategic advantages. White aims to finish development cleanly before choosing a central or kingside plan. The Four Knights Game gives White a clear route to finish development cleanly before choosing a central or kingside plan. Its recurring positions revolve around central control, piece coordination, and the timing of Bb5, so the repertoire rewards understanding the structure as much as remembering the move order.
What is the main line of the Four Knights Game?
This trainer starts with 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3. The exact move order can change by variation, so learn the purpose of each move as well as the sequence.
Is the Four Knights Game good to learn as White?
It can be a useful part of a White repertoire if its positions match how you like to play. Learn the main plan first, then use the drill to test the recurring replies.
Study next
C50Italian GameClassic development with Bc4 targeting f7. Solid and principled.1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 d5 9. exd5C60Ruy LopezOne of the oldest and most respected openings, pressuring the knight defending e5.1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d3B20Sicilian Defense (Open)The most popular response to 1.e4. Asymmetric and combative.1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O
Turn the guide into recall
Now play the Four Knights Game from memory.
The drill gives you an opponent reply, checks your response, and repeats the branches that need more work.