Chess Board
[ECO code A20] Move Move Move Move Move Here Move Here Move Here Move Here
The Bremen (or Carls) Variation (alt. route)

Black developed his king's knight to KB3(f6) contesting his Q4(d5) and controlling White's K4(e4), a move perhaps superior to 2..Kt-KB3.
White develops his Queen's Knight to QB3(c3) and counters Black's KKt influence on the centre. Black may reply with a "closed" 3..B-QKt5 half-pin.
     White   Black
 1.  P-QB4   P-K4
 2.  P-KKt3  Kt-KB3
 3.  Kt-QB3	   Main 3W,2W route

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