Chess Board
[ECO code A00]
GROB OPENING
"King's Pawn" Variation
Black advanced a defended QP to control the entire centre, freeing his QB to attack White's KKtP.
White (best) pushes his King's Rook's Pawn out one square to KR3(h3) to defend his threatened KKtP. Other moves are effectively a gambit.
    White  Black    Main 1..P-Q4 route
 1. P-KKt4 P-K4	    (1.	P-KKt4	P-Q4)
 2. B-K2   P-Q4	    (2.	P-KR3	P-K4)
 3. P-KR3	    (3.	B-Kt2	    )
Example ends: Undo or Jump or Clear