Basic Ideas
Although fairly uncommon, the "Tango" has a sounder positional basis than most other offbeat openings: Black develops quickly, has a flexible pawn structure, and is prepared to strike back in the center with 3...e5, or with ...e6 and ...d5. The opening has some distinct variations but it is highly transpositional, and may transpose to the King's Indian Defense, Nimzo-Indian Defense, Bogo-Indian Defense, Chigorin Defense, Ragozin System, Catalan Opening, and English Opening.
Read more about this topic: Black Knights' Tango
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