Four knights (C47)

Scotch, Krause variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 Bb4 5. Nxe5

Philidor (C41)

Hanham, Krause variation

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. O-O

Giuoco Piano (C54)

Krause variation

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Nxe4 8. Bxb4 Nxb4 9. Bxf7+ Kxf7 10. Qb3+ d5 11. Ne5+ Kf6 12. f3

QGD (D50)

Semi-Tarrasch, Krause variation

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c5 5. Nf3 cxd4 6. Nxd4 e5 7. Ndb5 a6 8. Qa4

Two knights (C55)

Max Lange attack, Krause variation

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. O-O Bc5 6. e5 Ng4 7. c3

Queen's pawn game, Krause variation (D02)

1. d4 d5 2. Nf3 c5

Petrov (C42)

Classical attack, Krause variation

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Re1 Bg4 9. c3 f5 10. c4

QGD Slav (D17)

Krause attack

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5

Scotch (C45)

Gottschall variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Qd2 d5 8. Nb5 Bxe3 9. Qxe3 O-O 10. Nxc7 Rb8 11. Nxd5 Nxd5 12. exd5 Nb4

Scotch (C45)

Berger variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nb5 Bb4+ 6. Nd2 Qxe4+ 7. Be2 Qxg2 8. Bf3 Qh3 9. Nxc7+ Kd8 10. Nxa8 Nf6 11. a3

Scotch (C45)

Steinitz variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nc3

Scotch (C45)

Tartakower variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Nd2

Scotch (C45)

Potter variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nb3

Scotch (C45)

Rosenthal variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nb5 Bb4+ 6. Bd2 Qxe4+ 7. Be2 Kd8 8. O-O Bxd2 9. Nxd2 Qg6

Scotch (C45)

Mieses variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5

Scotch (C45)

Schmidt variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6

Scotch (C45)

Meitner variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Nc2

Scotch (C44)

Cochrane variation

1. e4 e5 2. Nf3 Nc6 3. d4 Nxd4 4. Nxe5 Ne6 5. Bc4 c6 6. O-O Nf6 7. Nxf7

Scotch (C45)

Romanishin variation

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nb3 Bb4+

Four knights (C47)

Scotch variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4