[bteqhdra] National chess openings

Some common chess openings named after regions:
English 1.c4
Slav 1.d4 d5 2.c4 c6
Indian 1.d4 Nf6
Catalan 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2
Mexican 1.d4 Nf6 2.c4 Nc6
Dutch 1.d4 f5
Sicilian 1.e4 c5
Scandinavian 1.e4 d5
Italian 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5
Spanish (= Ruy Lopez) 1.e4 e5 2.Nf3 Nc6 3.Bb5
Scotch 1.e4 e5 2.Nf3 Nc6 3.d4
Russian (= Petroff) 1.e4 e5 2.Nf3 Nf6
Latvian 1.e4 e5 2.Nf3 f5
French 1.e4 e6
Yugoslav (= Pirc) 1.e4 d6
Danish
Polish

https://en.wikipedia.org/wiki/List_of_chess_openings_named_after_places