Chessmate

Queen's Indian Defense · White

Petrosian Main Line, ...Qc7 and the a4 Clamp (E12)

Claim the center and prepare c4. This course enters the Queen's Indian only after Black commits to ...b6.

0/25

Step through the line. Every move has a reason.

Practice this line from memory on the free trainer

More courses in this opening

Continue through the Queen's Indian Defense repertoire from another tabiya.

Queen's Indian Defense · BlackDifficulty 3/3

Black repertoire · ECO E12–E19

Sample line with full explanations: Old Main Line, Qc2 and ...f5.

All lines in this course

ECO E12

Every one of these lines is explained move by move in the app — with recall practice and spaced review.

Train this course
  1. Petrosian Main Line, ...Qc7 and the a4 ClampSample

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 Nxc3 8. bxc3 Be7 9. e4 O-O 10. Bd3 c5 11. O-O Qc7 12. Qe2 Nd7 13. a4

  2. Petrosian Main Line, Meeting ...Qc8 and ...Ba6

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 Nxc3 8. bxc3 Be7 9. e4 O-O 10. Bd3 c5 11. O-O Qc8 12. Qe2 Ba6 13. Rd1 Bxd3 14. Rxd3

  3. Petrosian Main Line, Regroup against ...Nc6

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 Nxc3 8. bxc3 Be7 9. e4 O-O 10. Bd3 c5 11. O-O Nc6 12. Bb2 Rc8 13. Qe2

  4. Immediate ...c5, Meet ...Nd7 with Bf4

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 Nxc3 8. bxc3 c5 9. e4 Nd7 10. Bf4

  5. Immediate ...c5, Meet ...Nc6 with Be3

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 Nxc3 8. bxc3 c5 9. e4 Nc6 10. Be3

  6. Classical Recapture, Bg5 and Qa4+

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 exd5 7. Bg5 Be7 8. Qa4+ c6 9. e3 h6 10. Bxf6 Bxf6 11. Bd3

  7. Andersson Variation, Exchange on e4

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Ne4 6. Nxe4 Bxe4 7. e3 Be7 8. Bd3 Bxd3 9. Qxd3 O-O 10. O-O

  8. Hedgehog Setup, Qc2 and the e5 Advance

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 g6 6. Qc2 Bg7 7. e4 d5 8. cxd5 exd5 9. e5 Ne4 10. Bd3

  9. Petrosian 4...Ba6, Immediate ...c5

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 c5 6. d5 exd5 7. cxd5 g6 8. Nc3 Bg7 9. g3 O-O 10. Bg2 d6 11. O-O

  10. Farago Main Line, Retreat against ...Bc5

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Bc5 9. Nf3 Nc6 10. Bf4

  11. Farago Main Line, Exchange against ...Nc6

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. Bf4

  12. Farago Hedgehog, Build the f4 Expansion

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 d6 9. Be2 Be7 10. O-O O-O 11. Be3 Nbd7 12. Rad1 a6 13. f4

  13. Benoni Approach, Take Space with d5

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 c5 5. d5 exd5 6. cxd5 g6 7. Nc3 Bg7 8. e4 O-O 9. Be2 d6 10. O-O

  14. Early ...Be7, Seize Space with d5

    1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Be7 6. d5 O-O 7. e4 exd5 8. cxd5 d6 9. Bd3 Nbd7 10. b4