ECO chess codes B9

B90 - Sicilian Defense/Najdorf Variation
1. e4 c5 
2. Nf3 d6 
3. d4 cd4 
4. Nd4 Nf6 
5. Nc3 a6
        
B91 
1. e4 c5   
2. Nf3 d6   
3. d4 cd4   
4. Nd4 Nf6   
5. Nc3 a6   
6. g3

B92
1. e4 c5   
2. Nf3 d6   
3. d4 cd4   
4. Nd4 Nf6   
5. Nc3 a6   
6. Be2

B93
1. e4 c5   
2. Nf3 d6   
3. d4 cd4   
4. Nd4 Nf6   
5. Nc3 a6   
6. f4

B94
1. e4 c5   
2. Nf3 d6   
3. d4 cd4   
4. Nd4 Nf6   
5. Nc3 a6   
6. Bg5

B95
1. e4 c5   
2. Nf3 d6   
3. d4 cd4   
4. Nd4 Nf6   
5. Nc3 a6  
6. Bg5 e6

B96
1. e4 c5   
2. Nf3 d6   
3. d4 cd4   
4. Nd4 Nf6   
5. Nc3 a6
6. Bg5 e6   
7. f4

B97 - Sicilian Defense Najdorf Poisoned Pawn Variation
1. e4 c5   
2. Nf3 d6   
3. d4 cd4   
4. Nd4 Nf6   
5. Nc3 a6
6. Bg5 e6   
7. f4 Qb6

B98 - Sicilian Defense/Najdorf Variation
1. e4 c5   
2. Nf3 d6   
3. d4 cd4   
4. Nd4 Nf6   
5. Nc3 a6
6. Bg5 e6   
7. f4 Be7

B99
1. e4 c5   
2. Nf3 d6   
3. d4 cd4   
4. Nd4 Nf6   
5. Nc3 a6
6. Bg5 e6   
7. f4 Be7   
8. Qf3 Qc7   
9. O-O-O Nbd7