411 REFERENCE · Wikibooks
Chess Opening Theory/1. f3/1...e5/2. c3
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Horn Attack rd nd bd qd kd bd nd rd pd pd pd pd pd pd pd pd pl pl pl pl pl pl pl pl rl nl bl ql kl bl nl rl Barnes Opening
Barnes Opening/Horn Attack
2. c3?!
This move blocks the Queen's Knight from going to c3.
It does control d4, but will have to contest with the e pawn.
2. c3
1
2
f3e5
c3d5
This move is unusual and is not seen frequently.