Here are some chess puzzles from the games of Ken Rogoff. Black to move and win except where noted.
Solutions are between the brackets under each puzzle. Drag your cursor from one bracket to the other.
a) White to move and win. Rogoff vs Erling Kristiansen, Polanica Zdroj, 1975 2b1rbk1/4qp1p/p2p1np1/1p6/4P3/1P1QN2P/PB1R1PP1/1B4K1 w - - 0 1 [ Qc3 if Qe5 Qc6 or if Bg7 Nd5 ]
b) White Mates in 3. Rogoff vs Rosendo Balinas, Lone Pine, 1978 r4b1r/pp2kbp1/3R2B1/4P2p/2p2N1P/P4Pn1/1P1B2P1/R3K3 w - - 0 1 [ Nd5+ if Ke8 Nc7+ ]
c) Ali Ipek vs Rogoff, Athens, 1971 2r2rk1/R4p1p/1pb1p1p1/4b1Bn/2B5/2N2P1P/PP4P1/2R3K1 b - - 0 1 [ ...b5 if Bb3 Bd4+ ]
d) John Peters vs Rogoff, Oberlin, 1975 4r1k1/p4ppp/1p6/8/2q1n3/P1Pn1N1P/R4PP1/BQ4K1 b - - 0 1 [ ...Nc1 if Rc2 Ne2+ Qh2 Qc7+ ]
e) Samuel Reshevsky vs Rogoff, Lone Pine, 1978 5rk1/1b2b1pp/pq2pn2/1p4Q1/2r4P/1N1n1NP1/PP3PB1/R1B2RK1 b - - 0 1 [ ...Bxf3 Bxf3 Nd5 if Qh5 g6 ]