6.h3 with 6...e5 is variation 5 of 5 in the Sicilian Najdorf course, a advanced opening course for Black (ECO B90). It runs 22 moves and begins 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 …. White prepares g4 to kick the f6 knight. Black answers with ...e5 and ...h5, stopping g4 for good, and develops with ...Be6, ...Nbd7 and ...Be7. In the lesson every move is explained on a board and then drilled; it is free.
Move by move
1. e4 – Takes the centre.
1... c5 – The Sicilian.
2. Nf3 – Develops.
2... d6 – Controls e5.
3. d4 – Opens the centre.
3... cxd4 – Takes the centre pawn.
4. Nxd4 – Recaptures.
4... Nf6 – Hits e4.
5. Nc3 – Defends e4.
5... a6 – The Najdorf.
6. h3 – Prepares g4 to chase the f6 knight, and keeps the bishop options open.
6... e5 – Gains time on the knight and takes central space before g4 comes.
7. Nde2 – The knight heads for g3, from where it supports f5 and h5.
7... h5 – Stops g4 for good, which was White's whole idea, and gives the f6 knight a safe home.
8. g3 – White switches plans: the bishop goes to g2 to press on d5 and e4.
8... Be6 – Covers d5 against Nd5 and prepares ...Nbd7.
The lesson goes on for 6 more moves, each with its explanation.
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