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Sicilian Defense · As White · updated October 2026

Play against the Sicilian like Jan-Krzysztof Duda

A repertoire against the Sicilian built from 150 of Jan-Krzysztof Duda's public Chess.com blitz games. At every position you play the move Jan-Krzysztof Duda chose most often. Where Jan-Krzysztof Duda 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 Jan-Krzysztof Duda or Chess.com.

  • Jan-Krzysztof Duda was #8 in Chess.com blitz in October 2026 (3,303) and scored 75% against opponents averaging 3,008 in these games.
  • You play Jan-Krzysztof Duda's own move in 33 of 40 positions.
  • The whole course is free, and it is updated monthly.

Free · first 5 lines need no account

Blitz rank

#8

Chess.com

Rating

3,303

Games

150

in this opening

Score

75%

in these games

Opponents

3,008

average rating

More about Jan-Krzysztof Duda

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 17 moves

Lines to learn

  1. Line 1 · 10% at top level

    2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.Bc4 Qb6 8.Bb3 e6 9.Bxf6 Nxf6 10.Qd2

  2. Line 2 · 7% at top level

    2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4

  3. Line 3 · 7% at top level

    2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.a3 Nc6 9.Nb3

  4. Line 4 · 7% at top level

    2.Nf3 Nc6 3.Bb5 Nf6 4.Bxc6 dxc6 5.d3 Bg4 6.Nbd2

  5. Line 5 · 7% at top level

    2.Nf3 Nc6 3.Bb5 d6 4.O-O Bd7 5.Re1

  6. Line 6 · 6% at top level

    2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Nxc6 bxc6 7.e5 Nd5 8.Ne4

  7. Line 7 · 6% at top level

    2.Nf3 g6 3.d4 cxd4 4.Nxd4 Bg7 5.c4 Nc6 6.Be3 Qb6 7.Nb3 Qd8 8.Qd2 Nf6 9.f3

  8. Line 8 · 5% at top level

    2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.a3 b5 8.Nxc6 Qxc6 9.Bd3 Bb7 10.O-O Nf6 11.Re1 Be7 12.Qf3

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

Jan-Krzysztof Duda's main line against the Sicilian, move by move

The most common line at top level: 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.Bc4 Qb6 8.Bb3 e6 9.Bxf6 Nxf6 10.Qd2.

  1. 2.Nf3 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 2.Nf3 in 130 games, scoring 74%.
  2. 2…d6 Reply · Jan-Krzysztof Duda's games A common reply here is 2…d6. At top level, this comes up about 38% of the time.
  3. 3.d4 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 3.d4 in 31 games, scoring 69%.
  4. 3…cxd4 Reply · Jan-Krzysztof Duda's games A common reply here is 3…cxd4. At top level, this comes up about 35% of the time.
  5. 4.Nxd4 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 4.Nxd4 in 29 games, scoring 71%.
  6. 4…Nf6 Reply · Jan-Krzysztof Duda's games A common reply here is 4…Nf6.
  7. 5.Nc3 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 5.Nc3 in 28 games, scoring 71%.
  8. 5…a6 Reply · Jan-Krzysztof Duda's games A common reply here is 5…a6. At top level, this comes up about 28% of the time.
  9. 6.Bg5 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 6.Bg5 in 8 games, scoring 50%.
  10. 6…Nbd7 Reply · Jan-Krzysztof Duda's games A common reply here is 6…Nbd7. At top level, this comes up about 14% of the time.
  11. 7.Bc4 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 7.Bc4 in 4 games, scoring 50%.
  12. 7…Qb6 Reply · Jan-Krzysztof Duda's games A common reply here is 7…Qb6. At top level, this comes up about 10% of the time.
  13. 8.Bb3 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 8.Bb3 in 3 games, scoring 67%.
  14. 8…e6 Reply · Jan-Krzysztof Duda's games A common reply here is 8…e6.
  15. 9.Bxf6 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 9.Bxf6 in 2 games, scoring 50%.
  16. 9…Nxf6 Reply · Top-50 players In the other top players' games, a common reply here is 9…Nxf6.
  17. 10.Qd2 Your move · Top-50 players Jan-Krzysztof Duda has too few games here, so this is the other top players' most played move.

Questions about this course

How does Jan-Krzysztof Duda play against the Sicilian?
After 1.e4 c5, Jan-Krzysztof Duda's most common line is 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.Bc4 Qb6 8.Bb3 e6 9.Bxf6 Nxf6 10.Qd2. At top level it comes up about 10% of the time.
Is this Jan-Krzysztof Duda's course?
No. ChessDrills builds it automatically from Jan-Krzysztof Duda's public Chess.com blitz games.
What is this Sicilian course based on?
150 of Jan-Krzysztof Duda's Chess.com blitz games in the Sicilian Defense as White, against opponents with an average rating of 3,008. Jan-Krzysztof Duda scored 75% in them.
How many lines does the course have?
8 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 Jan-Krzysztof Duda?
GM Jan-Krzysztof Duda was ranked number 8 on the Chess.com blitz leaderboard with a rating of 3,303 when this course was built.