Ruy Lopez · As White · updated October 2026
Play the Ruy Lopez like Dau Khuong Duy
A repertoire in the Ruy Lopez built from 113 of Dau Khuong Duy's public Chess.com blitz games. At every position you play the move Dau Khuong Duy chose most often. Where Dau Khuong Duy 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 Dau Khuong Duy or Chess.com.
- Dau Khuong Duy was #44 in Chess.com blitz in October 2026 (3,204) and scored 66% against opponents averaging 2,983 in these games.
- You play Dau Khuong Duy's own move in 26 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.
Free · first 5 lines need no account
Blitz rank
#44
Chess.com
Rating
3,204
Games
113
in this opening
Score
66%
in these games
Opponents
2,983
average rating
Lines to learn
- Next
Line 1 · 9% at top level
3…a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 d6 8.a3 O-O 9.Nc3
- New
Line 2 · 7% at top level
3…a6 4.Ba4 d6 5.c4 Bg4 6.d3
- New
Line 3 · 6% at top level
3…a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 O-O 8.Nc3 d6 9.a3
- New
Line 4 · 5% at top level
3…a6 4.Ba4 Nf6 5.O-O Bc5 6.c3 b5 7.Bb3 d6 8.d4 Bb6 9.a4
- New
Line 5 · 5% at top level
3…a6 4.Ba4 Nf6 5.O-O b5 6.Bb3
- New
Line 6 · 5% at top level
3…a6 4.Ba4 Nf6 5.O-O d6 6.c4
- New
Line 7 · 4% at top level
3…Bc5 4.c3
- New
Line 8 · 4% at top level
3…a6 4.Ba4 Nge7 5.O-O Ng6 6.d4
- New
Line 9 · 4% at top level
3…Nf6 4.d3 Bc5 5.c3 O-O 6.O-O d5 7.Nbd2 dxe4 8.dxe4
- New
Line 10 · 4% at top level
3…Nf6 4.d3 Bc5 5.c3 d6 6.O-O O-O 7.h3
- New
Line 11 · 4% at top level
3…a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 d6 8.a3 Na5 9.Ba2 c5 10.Nc3 Be6 11.b4
- New
Line 12 · 4% at top level
3…a6 4.Ba4 Nf6 5.O-O Be7 6.d3 d6 7.c4 O-O 8.h3 Nd7 9.Nc3 Nc5 10.Bxc6 bxc6 11.d4 exd4 12.Nxd4 Bd7 13.Be3
- New
Line 13 · 4% at top level
3…a6 4.Ba4 Bc5 5.c3 Nge7 6.d4
- New
Line 14 · 4% at top level
3…g6 4.d4 exd4 5.c3
Ordered by how often they come up in top-level games. Learned lines join your daily review.
Dau Khuong Duy's main line in the Ruy Lopez, move by move
The most common line at top level: 3…a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 d6 8.a3 O-O 9.Nc3.
- 3…a6 Reply · Dau Khuong Duy's games A common reply here is 3…a6. At top level, this comes up about 71% of the time.
- 4.Ba4 Your move · Dau Khuong Duy's games Dau Khuong Duy played 4.Ba4 in 80 games, scoring 64%.
- 4…Nf6 Reply · Dau Khuong Duy's games A common reply here is 4…Nf6. At top level, this comes up about 42% of the time.
- 5.O-O Your move · Dau Khuong Duy's games Dau Khuong Duy played 5.O-O in 43 games, scoring 63%.
- 5…Be7 Reply · Dau Khuong Duy's games A common reply here is 5…Be7. At top level, this comes up about 25% of the time.
- 6.d3 Your move · Dau Khuong Duy's games Dau Khuong Duy played 6.d3 in 20 games, scoring 70%.
- 6…b5 Reply · Dau Khuong Duy's games A common reply here is 6…b5. At top level, this comes up about 21% of the time.
- 7.Bb3 Your move · Dau Khuong Duy's games Dau Khuong Duy played 7.Bb3 in 17 games, scoring 74%.
- 7…d6 Reply · Dau Khuong Duy's games A common reply here is 7…d6. At top level, this comes up about 15% of the time.
- 8.a3 Your move · Dau Khuong Duy's games Dau Khuong Duy played 8.a3 in 12 games, scoring 92%.
- 8…O-O Reply · Dau Khuong Duy's games A common reply here is 8…O-O. At top level, this comes up about 9% of the time.
- 9.Nc3 Your move · Dau Khuong Duy's games Dau Khuong Duy played 9.Nc3 in 7 games, scoring 86%.
Questions about this course
- How does Dau Khuong Duy play the Ruy Lopez?
- After 1.e4 e5 2.Nf3 Nc6 3.Bb5, Dau Khuong Duy's most common line is 3…a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 d6 8.a3 O-O 9.Nc3. At top level it comes up about 9% of the time.
- Is this Dau Khuong Duy's course?
- No. ChessDrills builds it automatically from Dau Khuong Duy's public Chess.com blitz games.
- What is this Ruy Lopez course based on?
- 113 of Dau Khuong Duy's Chess.com blitz games in the Ruy Lopez as White, against opponents with an average rating of 2,983. Dau Khuong Duy scored 66% 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 Dau Khuong Duy?
- IM Dau Khuong Duy was ranked number 44 on the Chess.com blitz leaderboard with a rating of 3,204 when this course was built.