Here are some chess puzzles taken from the games of Efim Geller.
White to move and win except where noted.

Solutions are between the brackets under each puzzle.
Drag your mouse from one bracket to the other.

a)
Geller vs Joseph Vatnikov, Kiev, 1950
r1bqnrk1/p3b1pp/1p2Pp2/4pN2/8/1nN1B3/PPP3PP/R2Q1RK1 w - - 0 1
[ Nd5 ]

b)
White Mates in 7. Geller vs Nikolai Novotelnov, Moscow, 1951
5nk1/2b1q1p1/2p5/3pP1pQ/1r1P2P1/3B1R2/5PP1/6K1 w - - 0 1
[ Rxf8+ Kxf8 Qh8+ ]

c)
Geller vs Paul Muller, Helsinki, 1952
r1b2r1k/pp1nb1pp/2p1pn2/3p1p1q/2PP4/3N1NP1/PPQ1PPBP/R1B2RK1 w - - 0 1
[ Nf4 w/Ng5 ]

d)
White Mates in 6. Geller vs Andrija Fuderer, Goteborg, 1955
r5kr/1b3pNp/p1R4B/1p6/6n1/1B6/PP3nPP/3R2K1 w - - 0 1
[ Bxf7+ w/Rd7+ ]

e)
White Mates in 6. Geller vs Alexander Kotov, Moscow, 1955
r1b2bk1/2q2pp1/p2p4/3P1NpQ/1np5/4R3/PB3PPP/6K1 w - - 0 1
[ Bxg7+ if Bxg7 Re8+ mates in 4 ]

Efim Geller, Part II. White to move and win except where noted.
a)
Geller vs Alexander Buslaev, Erevan, 1959
r4rk1/p3qppp/5n2/p2pP3/8/R2BP3/5PPP/3Q1RK1 w - - 0 1
[ exf6 if Qxa3 Bxh7+ mates ]

b)
White Mates in 8. Geller vs Pal Benko, Stockholm, 1962
r1bn3k/1p2b1q1/p5pN/3pp3/3P4/2P5/PP4RQ/5R1K w - - 0 1
[ Rxg6 ]

c)
Geller vs Miroslav Filip, Curacao, 1962
r5k1/1pqb2pp/p3p3/4P3/2n2r2/2N2B2/PPP1Q2P/R4R1K w - - 0 1
[ Nd5 w/Bxd5+ ]

d)
White Mates in 10. Geller vs Helmuth Luik, Leningrad, 1962
2r1r1k1/pb2b1pp/1p6/3P1Q1R/8/1P6/5PPP/1BqR2K1 w - - 0 1
[ Qxh7+ if Kf8 Qf5+ ]

e)
White Mates in 7. Geller vs Bent Larsen, Copenhagen, 1966
8/r7/p7/k4p2/2B1b2r/PPR5/1KP5/3R4 w - - 0 1
[ Rd6 ]

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Efim Geller, Part III. White to move and win except where noted.
a)
Geller vs Alexander Matanovic, Sukhumi, 1966
3r4/8/1P2k3/p1Rb1npp/5pB1/B7/6PP/6K1 w - - 0 1
[ Bxf5+ ]

b)
White Mates in 8. Geller vs Enver Bukic, Skopje, 1967
4bk2/1p3p2/p1r1r1p1/P2pP3/3B3R/2PP2PQ/5R1K/2q5 w - - 0 1
[ Bc5+ if Rxc5 Qxe6 ]

c)
White Mates in 5. Geller vs Milko Bobotsov, USSR, 1968
3q2r1/pbr2Q2/1p1kp3/4N3/3P4/2P5/P4PPP/4RBK1 w - - 0 1
[ Nc4+ ]

d)
Geller vs Anatoly Lutikov, Moscow, 1969
3r2k1/1pp1bp2/p5p1/3pNqP1/3P1P1Q/1PP5/P7/4R1K1 w - - 0 1
[ Ng4 ]

e)
Geller vs Heikki Westerinen, Goteborg, 1968
r3k3/1p2rp1p/1npp1Q2/3P2R1/1n2q3/6P1/5P1P/2R2BK1 w - - 0 1
[ Bh3 ]

Efim Geller, Part IV. White to move and win except where noted.
a)
White Mates in 6. Geller vs Andre Filipowicz, Hungary, 1970
4k2r/2Q2ppp/8/Bp1qp3/4n3/1P6/2P3PP/R6K w - - 0 1
[ Bb4 ]

b)
White Mates in 5. Geller vs Heinz Liebert, Kapfenberg, 1970
2b5/2qrrp1k/5R2/2p2p1p/1pB1P2P/1P1P2P1/1Q5K/8 w - - 0 1
[ Rh6+ ]

c)
White Mates in 4. Geller vs Hernandez, Havana, 1971
4nk2/p4p2/1p2pN1q/3pP1N1/PPnP2Q1/8/5PK1/8 w - - 0 1
[ Nxe6+ ]

d)
Geller vs Borislav Ivkov, Hilversum, 1973
2r3k1/1p2Qpp1/p2Pq3/P1p5/2P4P/4p3/6P1/4R2K w - - 0 1
[ d7 ]

e)
White Mates in 3. Geller vs Roberto Debarnot, Las Palmas, 1976
1k1r4/ppnr2pp/4p3/4Q3/1q6/6P1/PP3PBP/2RR2K1 w - - 0 1
[ Qxc7+ ]

Efim Geller, Part V. White to move and win except where noted.
a)
Geller vs Gudmundur Sigurjonsson, Wijk aan Zee, 1977
5rk1/1pq1rpnp/p3p1p1/4P3/8/1PN1QR2/P1P3PP/5R1K w - - 0 1
[ Ne4 ]

b)
Geller vs Igor Zaitsev, Erevan, 1982
5bk1/1brq1pp1/3p1n1p/R2Pp3/2P5/1r2BN1P/5PP1/Q3RBK1 w - - 0 1
[ Nd2 ]

c)
Geller vs Algirdas Bandza, USSR, 1983
3nr1kr/pb2bq1p/6nB/2R1P2N/1p1p2Q1/5N2/PP3PPP/4R1K1 w - - 0 1
[ e6 w/Rf5 or Ne5 ]

d)
Geller vs Pia Cramling, Reykjavik, 1984
6k1/1pr2p2/p2p3p/P2B1Q2/1PP1P3/4q2P/6P1/7K w - - 0 1
[ Qg6+ ]

e)
White Mates in 4. Geller vs Herbert Bastian, Baden-Baden, 1985
4R3/2p2kpQ/3p3p/p2r2q1/8/1Pr2P2/P1P3PP/4R1K1 w - - 0 1
[ Rf8+ ]

f)
Geller vs Eric Knoppert, Berlin, 1991
2r1r2k/1p2p2p/3pQ1p1/q2P4/4pB2/1B5P/P1P2PP1/6K1 w - - 0 1
[ Be5+ w/Qxe5+ & d6+ ]

g)
Geller vs Ratmir Kholmov, Moscow, 1992
3bq3/1pr3kp/p7/3R1Q2/8/6P1/PPP2P1P/6K1 w - - 0 1
[ Qg4+ ]

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