There are three good winning moves here for Black, so we’re going to award gold, silver and bronze medals, depending on whether you see all three lines and their continuations (write ‘em down!) or just two or only one.
Here are all three lines: 1...c4 2.Rxb2 c3 3.Rc2 cxd2+ 4.Rxd2 Qxd2+ 5.Kf1 Qd1+ 6.Kg2 Qxg4+ 7.Kh2 Rd1 8.Qf4 Qh5+ 9.Kg2 Qh1+ 10.Kg3 Rg1# or 1...Bc1 2.Rxc1 Qxd2+ 3.Kf1 Qxc1+ 4.Kg2 c4 5.Qf4 c3 6.Qc7 Qd1 7.Qxc3 Qxg4+ 8.Kh2 Rd5 9.Qc8+ Qxc8 10.f3 Rg5 11.f4 Qc2+ 12.Kh3 Qg2+ 13.Kh4 Rh5#, and, lastly,
1...Bc3 2.Rxc3 Qxd2+ 3.Kf1 Qd1+ 4.Kg2 Qxg4+ which transposes into the Bc1 line. In the real game, Vaganian-Velimirovic, 1972, Black played Bc3 and White Resigned.
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