Line 409 deals with the main line of the Breyer Variation in the Ruy Lopez, that is, when White transfers his Knight from d2 to g3.
After the most common 13… Bf8 White sometimes opts for the Romanishin Variation (14. Bg5), which is a bit of a sideline. Black has a couple of ways to get comfortable positions after 14. Bg5 h6 15. Bh4, for example 15… Qc8 (planning exd4 with Nxe4) 16. dxe5 dxe5 17. N3h2 a5!? 18. Qf3 Ra6.
Move 14. Ng3 can be seen more frequently, where 14… c6 and 14… c5 do not give Black fully balanced play, and 14… g6 is considered to be the best choice. Now, move 15. b3 is the point of interest of our Line 410, 15. a4 is also a well-investigated option, while 15. Bg5 h6 16. Bd2 is an interesting alternative.
[Diagram: White to Move] Black’s poorly protected King allows White to finish the game in style. Can you see the winning plan for him?
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