D4
???
it's (probably) Giuoco Piano Game: Giuoco Pianissimo, Italian Four Knights, Canal Variation standing at 63
(edit: it's 66, i can't count)
(edit: still not sure. i'm too lazy to count)
“Queen's Indian Defense: Fianchetto, Nimzowitsch Variation, Quiet, Check Variation, Intermezzo Line” (98)
It’s actually the tasty very tasty cagnus marlsen defence of the uno reverse card that has been used 10203937 times to rickroll everyone except nikaru hakamura and SpongeBob and mrcow
Englund Gambit Declined: Reversed Alekhine, Reversed Krebs, Reversed Mokele Mbembe Variation
(1. d4 e5 2. Nf3 e4 3. Ne5)
D4