Classical: Mar del Plata 9.Ne1 is variation 1 of 6 in the King's Indian Defence course, a advanced opening course for Black (ECO E99). It runs 26 moves and begins 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 …. White closes the centre with 8.d5 and plays on the queenside with c5; Black reroutes the knight via d7 to f6, pushes ...f5-f4 and ...g5-g4, and attacks the king. This is the most famous race in the King's Indian. In the lesson every move is explained on a board and then drilled; it is free.
Move by move
1. d4 – White occupies the centre and frees the c1 bishop.
1... Nf6 – Develops and stops White from playing e4 at once.
2. c4 – Grabs more space and prepares Nc3 and e4.
2... g6 – Prepares ...Bg7, the King's Indian fianchetto aimed at d4 and the long diagonal.
3. Nc3 – Develops and supports the e4 advance.
3... Bg7 – Completes the fianchetto; the bishop now eyes d4 and later the whole a1-h8 diagonal.
4. e4 – White builds the full pawn centre with c4, d4 and e4.
4... d6 – Covers e5 and prepares ...e5; Black is happy to let White have the centre for now.
5. Nf3 – Natural development: covers d4 and e5 and prepares to castle.
5... O-O – Black castles before any central fighting begins.
6. Be2 – Calm development so White can castle; the Classical Variation.
6... e5 – The key counter in the centre: hits d4 and fights for the dark squares.
7. O-O – White finishes development and keeps the central tension.
7... Nc6 – Adds pressure to d4 and asks White to decide about the centre.
8. d5 – White closes the centre and gains space; now the play goes to the wings.
8... Ne7 – The knight retreats toward g6 and f5, supporting the ...f5 break.
The lesson goes on for 10 more moves, each with its explanation.