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Atomic Chess Opening Theory/1. Nf3/1...f6/2. Nd4
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tright 1. Nf3 f6 2. Nd4 rd nd bd qd kd bd nd rd pd pd pd pd pd pd pd pd nl pl pl pl pl pl pl pl pl rl nl bl ql kl bl rl treat to attack e7 and g7 squares from f5
2. Nd4
White treat to attack e7 and g7 squares from f5 and also treat Nb5.
Black responses
2...Nh6! - defence f5 square and create countertreat (Ng4)