Ruy Lopez - (C70) Norwegian Defence or Wing Variation (Opening Theory)

Ruy Lopez Norwegian Defense Chess Resources

The Norwegian Defence (also called the Wing Variation ), is an aggressive but time-consuming alternative for Black. The game follows 3...a6 4.Ba4 b5 5.Bb3 Na5. The goal of the opening is to eliminate the white bishop. A speculative sacrifice (Nightingale Gambit) is now 6.Bxf7+?!, which drives the black king out, but with accurate play, Black is supposed to be able to consolidate his extra piece.

Ruy Lopez (Wing Variation) Articles

Ruy Lopez - Norwegian Defense - Chess.com Article by IM Jeremy Silman (Article is on the Speculative Sacrifice 6. Bxf7? Nightingale Gambit by White) 
Sverre's Chess Corner Blog - Blog Posts by Norwegian Player Sverre Johnsen (and Author of THE RUY LOPEZ: A GUIDE FOR BLACK) on this Ruy Lopez Variation. (About 10 posts dealing with Different aspects of this Variation) 
Norwegian Defense - Interesting Stuff -  Article on a guys games with it.

Ruy Lopez Norwegian Defense Video Lessons

Surprise Weapon Against the Ruy Lopez (Norwegian Variation) - 6 Min
Trick The Ruy Lopez with The Norwegian Variation. - 9 Min
Chess Openings: Ruy Lopez - Norwegian Def. - 16 Min
Norwegian Defense Secret Weapon 1 FM Yuriy Krykun - 10 Min
Game Videos
Ruy Lopez Norwegian Defense Stockfish14 vs Itself - 7 Min