Ulhumbrus: 4 g3 allows Black to take the initiative by 4...d5
7 h4? begins an attack in a position where White has little or no advantage. The attack is unsound and can be forecast to fail against the right play
8 h5? persists with the unsound attack. Now Black may have the advantage after 8...e5 but 8....e6 may be sufficient as well.
11 b4 looks at first sight like a ridiculous offer of a pawn. It is not. It clears the square b2 with tempo and what is less obvious is that this makes possible Rc1 and Nc5.
On 12 Bb2 0-0 13 Rc1 it is too late for Black to play ...b6 to keep the N on e4 out of c5.
On 11...Nd5xb4 12 Bb2 0-0 13 Ne5 Nxe5 14 Bxe5 threatens Nf6+ and the bishop on e5 keeps Black's queen's rook out of b8
On 11..Nd5xb4 12 Bb2 suppose that instead of 12..0-0 Black tries 12...f6 to obstruct the long diagonal. Then 13 Rc1 b6 does not leave the N on c6 en prise, and White can't play 14 Ne5. However the N on b5 can be chased away by 14 a3 and on 14...Nb4-d5 the c5 pawn is pinned and invites the attack 15 d4
Black can delay the capture of the pawn by 11...Bf6 12 Nxf6+ Qxf6 but then 13 Rb1 supports the skewer Bb2.
An alternative to all this is for Black to offer a pawn instead of taking it by 11...f5. On 12 Nxc5 0-0. This seems worth looking at further. The pawn sacrifice on c5 brings to mind the game Polugaevsky vs Bronstein, 1971
19...Nxh6? looks like the losing mistake because the knight gets trapped on h6. Instead of this 19...f5 enables the rook on f8 to cover the move ...Bf6
20 Qe3! forces Black to expose his king side by 20...g5 and White goes on to win.
Kibitzing
