King's Indian Defence; Code System; Practice; Four Pawns' Attack (1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3); Variation 6... c5 7. dc Qa5 8. Bd3 Qc5 9. Qe2; Variation 6... c5 7. d5 e6 8. de fe; Variation 6... c5 7. d5 e6 8. Be2 ed 9. cd Bg4 10. 0-0 Nbd7; Variation 6... c5 7. d5 e6 8. Be2 ed 9. ed; Variation 6... Na6; Saemisch System (1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3); Variation 5... 0-0 6. Be3 e5 7. d5 c5; Variation 5... 0-0 6. Be3 e5 7. Nge2 c6 8. Qd2 Nbd7; Variation 5... 0-0 6. Be3 e5 7. d5 Nh5 8. Qd2 Qh4; Variation 5... 0-0 6. Be3 e5 7. d5 Nh5 8. Qd2 f5 9. 0-0-0; Variation 5... 0-0 6. Be3 e5 7. d5 c6 8. Bd3; Variation 5... 0-0 6. Be3 e5 7. d5 c6 8. Qd2; Variation 5... c5; Variation 5... 0-0 6. Be3 b6; Variation 5... 0-0 6. Be3 Nbd7; Variation 5... 0-0 6. Be3 c5 7. dc dc 8. Qd8 Rd8 9. Bc5 Nc6; Variation 5... 0-0 6. Be3 c6; Variation 5... 0-0 6. Be3 c5 7. Nge2; Variation 5... 0-0 6. Bg5; Variation 5... 0-0 6. Be3 Nc6 7. Nge2 a6 8. Qd2; Classical System (1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2); 6... e5 7. de de 8. Qd8 Rd8 9. Bg5; 6... e5 7. d5; 6... e5 7. 0-0 ed 8. Nd4; 6... e5 7. 0-0 Nbd7; 6... e5 7. 0-0 Na6; 6... e5 7. 0-0 Nc6 8. Be3; 6... e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1; 6... e5 7. 0-0 Nc6 8. d5 Ne7 9. Nd2; 6... e5 7. 0-0 Nc6 8. d5 Ne7 9. Bd2; 6... e5 7. 0-0 Nc6 8. d5 Ne7 9. b4; 6... e5 7. Be3; The System with Bg2 (1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0); 6... Nbd7 7. Qc2 e5 8. Nc3; 6... Nbd7 7. Nc3 e5 8. e4 c6; 6... Nbd7 7. Nc3 e5 8. e4 c6 9. h3; 6... Nbd7 7. Nc3 e5 8. e4 ed 9. Nd4 Re8 10. h3; 6... c5 7. Nc3 Nc6 8. d5 Na5 9. Nd2 a6; 6... c5 7. Nc3 Nc6 8. d5 Na5 9. Nd2 e5; 6... Nc6 7. Nc3 a6; 6... Nc6 7. Nc3 e5 8. d5 Ne7; Averbakh System (1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Bg5); 6... Nbd7 7. Qd2 e5; 6... c5 7. d5; 6... c5 7. d5 h6 8. Bf4 e6; 6... h6 7. Be3; 6... c6 7. Qd2 Nbd7; 6... Na6; Typical pawn structures; Positions with the closed center; The c5-d6-e5 structure; White's activity on the queenside; Black's activity on the kingside; Exchange of the dark-squared bishops; Exchange of the light-squared bishops; Restriction of black's kingside initiative; White castles queenside, black castles kingside; Positional sacrifices; Restriction of white's activity; Positions with the opened center (e5xd4); Black's main plans; Counterplay on the dark squares; Pressure along the half-open e-file; Undermining the white pawn center; White's main plans; Pressure on the d6-pawn; Driving aside the black pieces; White's spatial advantage; Typical plans in the most popular variations; Saemisch system; Plan with 6...e5; Plan with 6...c5; Plan with 6...Nc6; Classical system; Variation 9. Ne1; Variation 9. Nd2; Variation 9. b4; White king's fianchetto; the classical variation 6... Nbd7; the Yugoslavian variation 6... Nc6 7. Nc3 a6; Averbakh system; Variation 6... Nbd7; Variation 6... c5 7. d5; Variation 6... h6 7. Be3 c5; Test;