Similar diagrams (1):
References:
???????? Wladimir Akimowitsch Bron ???????? Przepiorka-Memorial ???????? 1960 ???????? ???????? ???????? ???????? Kd1 De3 Ld7 Lf8 Sd5 Ba4 Bb5 Be4 Bg6 ??????? Ke5 Ta7 Sc8 Sh5 Ba5 Bb4 Bb6 Bb7 Bd2 Bd3 Bh4 Bh6 Matt in 3 9+12=21