Here are some chess puzzles from the Ruy Lopez: 5.O-O (ECO C78).



1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O



Solutions are between the brackets under each puzzle.
Drag your cursor from one bracket to the other.
White to move and win except where noted.

a)
H Kunkel vs Weatherill, corr., 1964
r2qkb1r/6pp/p3bp2/n2pp3/Pp6/5N2/BPPBQPPP/R3R1K1 w - - 0 1
[ Nxe5 if fxe5 Qxe5 w/Bxd5 ]

b)
Hans Roeder vs M Prein, Bayern, 1988
r2q1k1r/1b2bppp/p4n2/1p1p4/P2p4/1PP1RP2/2B1Q1PP/RNB3K1 w - - 0 1
[ Rxe7 if Qxe7 Ba3 ]

c)
Black Mates in 4. Thevonez vs Richard Polaczek, Geneva, 1988
4rbkr/3Q2pp/p7/1ppb4/8/1NP5/PP2qPPP/R1B2RK1 b - - 0 1
[ ...Qxf1+ ]

d)
Robert Byrne vs J Bergquist, Chicago, 1989
r2qk2r/1bpp1ppp/3b1n2/p3p3/BpPnP3/P2P1N2/1P1N1PPP/R1BQ1RK1 w - - 0 1
[ Nxd4 if exd4 e5 ]

e)
Black Mates in 6. Smaranda Lupu vs Olivier Adda, Paris, 1990
2kr2r1/1bpp1p1p/p2b3Q/1p2p3/4P2q/1P2B3/1PP2PPP/RN3RK1 b - - 0 1
[ ...Rxg2+ if Kh1 Rxh2+ w/...Rg8+ ]

f)
Black to move and win. Marc Dutreeuw vs Vladimir Malaniuk, Forli, 1991
2kr2r1/1bp2p2/1b1p1p1p/1p1Pp3/2P1P3/5NPq/1P3P1P/RN1QR1K1 b - - 0 1
[ ...Rxg3+ hxg3 Rg8 ]

g)
Black to move and win. Stefan Haas vs Rudolf Mueller, Germany, 1998
r2qr1k1/2p2p2/p2bbn1p/1p1p2p1/3P4/1BP2QB1/PP3PPP/RN3RK1 b - - 0 1
[ ...Bg4 Qd3 Be2 ]

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