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London System · As White · updated October 2026

Play the London System like Arjun Erigaisi

A repertoire in the London System built from 56 of Arjun Erigaisi's public Chess.com blitz games. At every position you play the move Arjun Erigaisi chose most often. Where Arjun Erigaisi has fewer than 3 games, the course takes the other top-50 players' most played move, then Stockfish's. Learn a line on the board, then each position comes back in a short daily review until it sticks.

Not affiliated with or endorsed by Arjun Erigaisi or Chess.com.

  • Arjun Erigaisi was #30 in Chess.com blitz in October 2026 (3,233) and scored 76% against opponents averaging 2,948 in these games.
  • You play Arjun Erigaisi's own move in 23 of 40 positions.
  • The whole course is free, and it is updated monthly.

Train lines

Learn a new line move by move. Lines due for review go to your daily review first.

Next: line 1

Free · first 5 lines need no account

Blitz rank

#30

Chess.com

Rating

3,233

Games

56

in this opening

Score

76%

in these games

Opponents

2,948

average rating

More about Arjun Erigaisi

Use arrow keys to navigate the board. Press Enter to select a piece, then use arrow keys and Enter to move. Press Escape to cancel a move.
Line 1 after 8 moves

Lines to learn

  1. Line 1 · 6% at top level

    1…Nf6 2.Nc3 d5 3.Bf4 a6 4.e3 b5 5.h4

    Next

  2. Line 2 · 6% at top level

    1…Nf6 2.Nc3 d5 3.Bf4 c5 4.e3 cxd4 5.exd4 Bg4 6.Be2 Bxe2 7.Qxe2 Nc6 8.Nb5 Qa5+ 9.c3 Kd7 10.a4

    New

  3. Line 3 · 6% at top level

    1…Nf6 2.Nc3 d5 3.Bf4 g6 4.e3 Bg7 5.h4 h5 6.Nf3 O-O 7.Ne5 c5 8.Qd2 Nc6 9.dxc5

    New

  4. Line 4 · 4% at top level

    1…Nf6 2.Nc3 d5 3.Bf4 Bf5 4.e3 e6 5.Bd3 Bxd3 6.cxd3

    New

  5. Line 5 · 4% at top level

    1…Nf6 2.Nc3 d5 3.Bf4 a6 4.e3 e6 5.g4

    New

  6. Line 6 · 4% at top level

    1…Nf6 2.Nc3 d5 3.Bf4 c6 4.e3 Bf5 5.f3

    New

  7. Line 7 · 4% at top level

    1…d5 2.Nc3 Nf6 3.Bf4 c5 4.e3 Bg4 5.f3

    New

  8. Line 8 · 4% at top level

    1…d5 2.Nc3 Nf6 3.Bf4 c5 4.e3 cxd4 5.exd4 a6 6.Nf3 Nc6 7.Ne5 e6 8.a3 Bd7 9.Qd2

    New

  9. Line 9 · 3% at top level

    1…Nf6 2.Nc3 d5 3.Bf4 e6 4.e3 Bb4 5.Ne2 O-O 6.a3

    New

  10. Line 10 · 3% at top level

    1…Nf6 2.Nc3 d5 3.Bf4 c5 4.e3 cxd4 5.exd4 Bg4 6.Be2 Bxe2 7.Qxe2 a6 8.g4 h6 9.O-O-O

    New

  11. Line 11 · 3% at top level

    1…d5 2.Nc3 Nf6 3.Bf4 c6 4.e3 Bf5 5.f3

    New

  12. Line 12 · 3% at top level

    1…d5 2.Nc3 Nf6 3.Bf4 a6 4.e3 h6 5.Nf3 e6 6.Bd3 c5 7.dxc5 Bxc5 8.e4

    New

  13. Line 13 · 2% at top level

    1…d5 2.Nc3 Nf6 3.Bf4 c5 4.e3 cxd4 5.exd4 Bg4 6.Be2 Bxe2 7.Qxe2 a6 8.g4 Nc6 9.O-O-O

    New

  14. Line 14 · 2% at top level

    1…Nf6 2.Nc3 d5 3.Bf4 e6 4.e3 Bd6 5.Nf3

    New

Ordered by how often they come up in top-level games. Learned lines join your daily review.

Arjun Erigaisi's main line in the London System, move by move

The most common line at top level: 1…Nf6 2.Nc3 d5 3.Bf4 a6 4.e3 b5 5.h4.

  1. 1…Nf6 Reply · Arjun Erigaisi's games A common reply here is 1…Nf6. At top level, this comes up about 66% of the time.
  2. 2.Nc3 Your move · Arjun Erigaisi's games Arjun Erigaisi played 2.Nc3 in 31 games, scoring 77%.
  3. 2…d5 Reply · Arjun Erigaisi's games A common reply here is 2…d5. At top level, this comes up about 64% of the time.
  4. 3.Bf4 Your move · Arjun Erigaisi's games Arjun Erigaisi played 3.Bf4 in 30 games, scoring 77%.
  5. 3…a6 Reply · Arjun Erigaisi's games A common reply here is 3…a6. At top level, this comes up about 15% of the time.
  6. 4.e3 Your move · Arjun Erigaisi's games Arjun Erigaisi played 4.e3 in 7 games, scoring 86%.
  7. 4…b5 Reply · Arjun Erigaisi's games A common reply here is 4…b5. At top level, this comes up about 6% of the time.
  8. 5.h4 Your move · Arjun Erigaisi's games Arjun Erigaisi played 5.h4 in 3 games, scoring 100%.

Questions about this course

How does Arjun Erigaisi play the London System?
After 1.d4, Arjun Erigaisi's most common line is 1…Nf6 2.Nc3 d5 3.Bf4 a6 4.e3 b5 5.h4. At top level it comes up about 6% of the time.
Is this Arjun Erigaisi's course?
No. ChessDrills builds it automatically from Arjun Erigaisi's public Chess.com blitz games.
What is this London System course based on?
56 of Arjun Erigaisi's Chess.com blitz games in the London System as White, against opponents with an average rating of 2,948. Arjun Erigaisi scored 76% in them.
How many lines does the course have?
14 lines covering 40 positions, ordered by how often they come up in top-level games. The first 5 lines need no account; saving your progress with an email unlocks the rest, free.
Who is Arjun Erigaisi?
GM Arjun Erigaisi was ranked number 30 on the Chess.com blitz leaderboard with a rating of 3,233 when this course was built.

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