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French Defense · As Black · updated October 2026

Play the French like Jan-Krzysztof Duda

A French repertoire built from 57 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 81% against opponents averaging 2,947 in these games.
  • You play Jan-Krzysztof Duda's own move in 20 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

57

in this opening

Score

81%

in these games

Opponents

2,947

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 12 moves

Lines to learn

  1. Line 1 · 13% at top level

    2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 7.Nf3 b6

  2. Line 2 · 10% at top level

    2.d3 d5 3.Nd2 c5 4.Ngf3 Nc6 5.g3 Nf6 6.Bg2 Be7 7.O-O O-O

  3. Line 3 · 9% at top level

    2.d4 d5 3.Nc3 Bb4 4.Ne2 Nf6

  4. Line 4 · 8% at top level

    2.d4 d5 3.Nc3 Bb4 4.exd5 exd5 5.Bd3 Nf6

  5. Line 5 · 8% at top level

    2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bd7 5.Nf3 Bc6 6.Bd3 Nd7 7.O-O Ngf6

  6. Line 6 · 6% at top level

    2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7 6.Be2 f6 7.O-O fxe5 8.Nxe5 Nxe5 9.dxe5 Qc7 10.Re1 O-O-O 11.a4 Qxe5 12.Na3 Nf6 13.Bf3 Qf5

  7. Line 7 · 6% at top level

    2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 7.Qg4 Ne7

  8. Line 8 · 5% at top level

    2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bd7 5.Nf3 Bc6 6.Bd3 Nd7 7.Qe2 Ngf6 8.Nxf6+ Nxf6 9.c3 Bxf3 10.Qxf3 Qd5 11.Qxd5 Nxd5 12.Bd2 a5

  9. Line 9 · 5% at top level

    2.d4 d5 3.exd5 exd5 4.Nf3 Nc6

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

Jan-Krzysztof Duda's main line in the French, move by move

The most common line at top level: 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 7.Nf3 b6.

  1. 2.d4 Reply · Jan-Krzysztof Duda's games A common reply here is 2.d4. At top level, this comes up about 82% of the time.
  2. 2…d5 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 2…d5 in 43 games, scoring 79%.
  3. 3.Nc3 Reply · Jan-Krzysztof Duda's games A common reply here is 3.Nc3. At top level, this comes up about 42% of the time.
  4. 3…Bb4 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 3…Bb4 in 9 games, scoring 72%.
  5. 4.e5 Reply · Jan-Krzysztof Duda's games A common reply here is 4.e5. At top level, this comes up about 23% of the time.
  6. 4…c5 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 4…c5 in 5 games, scoring 90%.
  7. 5.a3 Reply · Jan-Krzysztof Duda's games A common reply here is 5.a3. At top level, this comes up about 19% of the time.
  8. 5…Bxc3+ Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 5…Bxc3+ in 4 games, scoring 88%.
  9. 6.bxc3 Reply · Jan-Krzysztof Duda's games A common reply here is 6.bxc3.
  10. 6…Qc7 Your move · Jan-Krzysztof Duda's games Jan-Krzysztof Duda played 6…Qc7 in 3 games, scoring 83%.
  11. 7.Nf3 Reply · Jan-Krzysztof Duda's games A common reply here is 7.Nf3. At top level, this comes up about 13% of the time.
  12. 7…b6 Your move · Stockfish The games give no move to follow here, so this is Stockfish's choice.

Questions about this course

How does Jan-Krzysztof Duda play the French?
After 1.e4 e6, Jan-Krzysztof Duda's most common line is 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 7.Nf3 b6. At top level it comes up about 13% 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 French course based on?
57 of Jan-Krzysztof Duda's Chess.com blitz games in the French Defense as Black, against opponents with an average rating of 2,947. Jan-Krzysztof Duda scored 81% in them.
How many lines does the course have?
9 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.