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Here are some chess puzzles from the games of Zahar Efimenko.
The color disk on the diagram indicates who moves first.

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

a)
White mates in 5.
Zahar Efimenko vs Anatoliy Polivanov, Kiev, 1997
r5k1/1p4pp/p1qN1n2/P1B5/1P6/3B4/7K/4Q3 w - - 1 0
[ Qe6+ Kh8 Nf7+ ]

b)
Zahar Efimenko vs Anton Korobov, Alushta, 2001
r4rk1/ppBnbppp/q3pn2/1N6/PPpP4/5B1P/3Q1PP1/R4RK1 w - - 1 0
[ Nd6 if Bxd6 b5 or if Nd5 Bxd5 exd5 b5 ]

c)
White mates in 3.
Zahar Efimenko vs S Stavroyany, Kiev, 2001
b4bk1/5p1p/3p4/2r1p3/PqB1Pp2/1PN4R/4QPPP/6K1 w - - 1 0
[ Qh5 ]

d)
White mates in 5.
Zahar Efimenko vs Adam Szeberenyi, Balatonlelle, 2001
7k/1b3prp/pq1p2pQ/1p2p1N1/4P3/3P3P/PP4P1/5R1K w - - 1 0
[ Ne6 if fxe6 Rf8+ Rg8 Rf7 ]

e)
Zahar Efimenko vs Alexsey Peskov, Kramatorsk, 2002
3rr1k1/1b3ppp/p1qp1Pn1/1p6/7Q/P1NB2R1/1PP3PP/5R1K w - - 1 0
[ Bxg6 if hxg6 fxg7 Kxg7 Qf6+ or if fxg6 f7+ ]

1a)
mate in 5
Zahar Efimenko vs Anatoliy Polivanov

Zahar Efimenko Puzzles, Part II.
The color disk on the diagram indicates who moves first.
a)
Zahar Efimenko vs Mikhail Yarmysty, Kramatorsk, 2002
1r3r1k/2Q3Rp/p3pp2/1p3q2/8/8/PPP3PP/1K2R3 w - - 1 0
[ g4 ]

b)
Zahar Efimenko vs Vladimir Sergeev, Simferopol, 2003
r3k2r/1p3pRp/2p1p3/p1b1q3/2B1P2P/P7/1PP1Q1P1/1K1R4 w kq - 1 0
[ Rg5 f5 Qh5+ if Kf8 or Ke7 Rxf5(+) ]

c)
White mates in 3.
Zahar Efimenko vs Alessio De Santis, San Marino, 2006
5k2/r1q4r/pR4Rp/1p1p1p2/1P5P/8/P1P3P1/1K2Q3 w - - 1 0
[ Rg8+ Kxg8 Qe8+ ]

d)
Zahar Efimenko vs Dmitry Andreikin, Sochi, 2008
1r2kb1r/pp1n1pp1/1q2p2p/nB2P3/P2p4/1N3Q2/1P3PPP/2R1R1K1 w k - 1 0
[ Bxd7+ Kxd7 Qxf7+ if Kd8 Nxd4 mates or if Be7 Nc5+ Kd8 Nxe6+ ]

e)
Zahar Efimenko vs Arkadij Naiditsch, Subotica, 2008
r1k3r1/2pR2p1/1pnbp2p/pNp1P3/6P1/1P5P/PBP2P2/3R2K1 w - - 1 0
[ R1xd6 cxd6 Rc7+ ]

2b)
Zahar Efimenko vs Vladimir Sergeev

Zahar Efimenko Puzzles, Part III.
The color disk on the diagram indicates who moves first.
a)
Zahar Efimenko vs Sergei Reutsky, Rijeka, 2010
8/1k2rp2/1p3R2/1b1p4/1N1P4/2P3Pp/3K3P/8 w - - 1 0
[ Rxb6+ Kxb6 Nxd5+ ]

b)
Zahar Efimenko vs Aleksey Goganov, Baku, 2013
N7/1k6/4p3/5pp1/3Pp1P1/4K3/5P2/8 w - - 1 0
[ d5 ]

c)
Alexej Gorbatov vs Zahar Efimenko, Moscow, 2013
4r1k1/2q3bp/1pp1n3/p3p3/P1b2p1P/1N4P1/1PPB1NBK/1Q1R4 b - - 0 1
[ ...fxg3+ Kxg3 e4+ if Kh3 Nf4+ or if Kg4 Qh2 ]

d)
Martin Kraemer vs Zahar Efimenko, Germany, 2013
2r2rk1/1b3pbp/pq1pp1p1/8/3NPPPP/2NRQ3/PPP5/1K4R1 b - - 0 1
[ ...Rxc3 if Rxc3 Bxd4 ]

e)
Black mates in 3.
Ralf Appel vs Zahar Efimenko, Germany, 2014
3r2k1/7p/6p1/p1n3P1/Ppn2N2/4P3/N4P2/2K3R1 b - - 0 1
[ ...Rd2 if Nc3 Nb3+ ]

3a)
Zahar Efimenko vs Sergei Reutsky

Zahar Efimenko Puzzles, Part IV.
The color disk on the diagram indicates who moves first.
a)
Weiming Goh vs Zahar Efimenko, Doha, 2014
R7/1pp2p1k/6p1/4p2n/1P2P3/2PNbPNP/7K/1r6 b - - 0 1
[ ...Nf4 if Nxf4 exf4 Nh1 Rb2+ or if Nxe5 Bg1+ Kh1 Bd4+ ]

b)
Black mates in 4.
Julian Jorczik vs Zahar Efimenko, Germany, 2015
7k/5rbp/p7/3Q4/3Np3/P3P2P/2K5/2R2q2 b - - 0 1
[ ...Qd3+ Kb2 Rf2+ Rc2 Qxc2+ ]

c)
Zahar Efimenko vs Alexander Herbrig, Dresden, 2019
7k/3r2p1/1Bqn1p1p/4p2P/pQ6/P7/1P3PP1/3R2K1 w - - 1 0
[ 1.Qc5 ]

4b)
mate in 4
Julian Jorczik vs Zahar Efimenko


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