Hello All,

New to the site here and it looks like there are lots of good posts to go over. Now, for one of my own:

What is a good rule of thumb on when to play the h3 move while playing the white pieces using the London System?

Thank you in advance for any info,

ColonelFlagg

I'm not very familiar with that system.

Heh, well I'm familiar with the black side. I know how to play against it as well as anyone.

A quick survey of Harding’s “Colle, London and Blackmar-Diemer Systems” shows White usually not playing h3 at all unless Black’s adopts the King’s Indian setup. In that case it appears White plays h3 after Black moves his d-Pawn. I would assume the reason for playing h3 is therefore to prevent the pin …Bg4 and not necessarily to make a hidey-hole for the B.