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Here are some chess puzzles from the games of Sergey Fedorchuk.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 4.
Sergey Fedorchuk vs Sergiy Kovalov, Kiev, 1997
1r5k/4p1b1/q3BnPp/2pPB2Q/1pb5/6P1/P6P/R4RK1 w - - 1 0
[ Rxf6 if Be2 Qxh6+ or if exf6 Bxf6 ]

b)
Sergey Fedorchuk vs Rainer Buhmann, Oropesa, 1999
1r1r1kn1/1pq2pp1/p1n4p/2Np4/P7/2P1QPP1/1P2RPK1/1B2R3 w - - 1 0
[ Qf4 if Qc8 Ne6+ or if Qxf4 Re8+ Rxe8 Nd7# ]

c)
Souren Hatchatrian vs Sergey Fedorchuk, Dnepropetrovsk, 1999
2rr2k1/pq1nbppp/b3p3/P1p5/2N1NB2/3nP3/1PQ2PPP/RR3BK1 b - - 0 1
[ ...Nb4 if Qa4 Qxe4 ]

d)
White mates in 4.
Sergey Fedorchuk vs Yakov Meister, Alushta 2001
5rk1/q4p1p/p3rBp1/1p1p1P2/1P3Q2/3PR3/P5PP/4R2K w - - 1 0
[ Qh6 if Rxf6 Re8 ]

e)
Sergey Fedorchuk vs Nikola Spiridonov, Sautron, 2002
3r1bk1/pp1n2p1/2p1RnQB/7P/3q4/8/PP3PP1/4R1K1 w - - 1 0
[ Bxg7 Bxg7 h6 if Ng4 (or Qg4) Re8+ ]

1e)
Sergey Fedorchuk vs Nikola Spiridonov

Sergey Fedorchuk puzzles, pt. ii.
The color disk on the diagram indicates who moves first.
a)
Jiri Horak vs Sergey Fedorchuk, Pilsen-Lobzy, 2003
4r1k1/p4pbp/q1bp2p1/2p3P1/4NP2/2PP3P/P5Q1/2R2R1K b - - 0 1
[ ...c4 if Rfe1 cxd3 Rcd1 Qa4 ]

b)
White mates in 4.
Sergey Fedorchuk vs Nikola Mitkov, Frankfurt, 2004
5rk1/1p3ppp/1bpQ1n2/p1nN4/q7/8/BPPB1PPP/4R1K1 w - - 1 0
[ Nxf6+ gxf6 Qxf8+ ]

c)
Tatiana Kononenko vs Sergey Fedorchuk, Badalona, 2005
2r4k/pb4pp/1p3n2/1Qb1q3/2B5/P6P/3B1PP1/R3R1K1 b - - 0 1
[ ...Qg3 if Bd5 Bxf2+ Kh1 Bxd5 ]

d)
Black mates in 2.
Ruben Felgaer vs Sergey Fedorchuk, Barcelona, 2005
7r/8/1P1R1bk1/5pp1/P3b1n1/1Q3n2/8/3K4 b - - 0 1
[ ...Rh1+ ]

e)
Black mates in 2.
P Doostkam vs Sergey Fedorchuk, Dubai, 2006
6rk/2p4p/6r1/P7/2BRppb1/4P3/7P/5R1K b - - 0 1
[ ...Bf3+ ]

2b)
mate in 4
Sergey Fedorchuk vs Nikola Mitkov

Sergey Fedorchuk puzzles, pt. iii.
The color disk on the diagram indicates who moves first.
a)
Sergey Fedorchuk vs Peter Petran, Warsaw, 2005
r3r1k1/1b1nqpbp/p5p1/P3p3/RpB1n3/1Q2BNNP/5PP1/4R1K1 w - - 1 0
[ Nxe4 Bxe4 Ng5 ]

b)
Alex Moreto Quintana vs Sergey Fedorchuk, Lorca, 2006
6k1/1q2rpp1/3p3p/p2Nr3/P2R4/1P4P1/2nQ1P1P/3R2K1 b - - 0 1
[ ...Re1+ Rxe1 Rxe1+ Kg2 Nxd4 ]

c)
Sergey Fedorchuk vs Dobrev Nanko, Villenueve Tolosane, 2006
5rk1/r4ppp/p2Qnq2/8/P2n2P1/1p2B2P/1P3P2/1BR1R1K1 w - - 1 0
[ Bxd4 if Nxd4 Qxf8+ Kxf8 Rc8+ ]

d)
Sergey Fedorchuk vs Saleh Jasim, Dubai, 2006
2b2rk1/3n2pp/p3pp2/1rb5/1pNB1P2/2P3P1/PP4BP/2KRR3 w - - 1 0
[ Bc6 if Rb8 Bxd7 Bxd7 Bxc5 ]

e)
Sergey Fedorchuk vs Erwan Menager, Avoine, 2006
r3r3/7p/5qpk/p1BQpb2/7P/8/PPP5/1K2R2R w - - 1 0
[ Qb7 if Qg7 Be3+ or if a4 Be3+ Kh5 Qf3+ Bg4 Qxf6 ]

3c)
Sergey Fedorchuk vs Dobrev Nanko

Sergey Fedorchuk puzzles, pt. iv.
The color disk on the diagram indicates who moves first.
a)
Sergey Fedorchuk vs Jose Reves Balleste, Tarragona, 2006
r4rk1/p2n1ppp/2pbbp2/1p5q/2PP4/3B4/PPQBNPPP/2K1R2R w - - 1 0
[ Ng3 if Qh4 Re4 Bg4 Nf5 ]

b)
White mates in 5.
Sergey Fedorchuk vs Fabien Guilleux, Paris, 2008
r1b4r/3Rbk1p/pq2pp1Q/2p1pP2/Bp2P3/8/PPP3PP/2K1R3 w - - 1 0
[ Rxe7+ Kxe7 Qg7+ Kd8 Rd1+ ]

c)
Sergey Fedorchuk vs Virgilio Vuelban, Porto San Giorgio, 2008
3r1k2/1pr3bQ/p6p/q7/5P2/2NB4/PPP4P/2K3R1 w - - 1 0
[ Bc4 if Ke8 Qg8+ mates ]

d)
Black mates in 2.
Marcin Sieciechowicz vs Sergey Fedorchuk, Cappelle la Grande, 2010
4r1k1/5p1p/1P4p1/3Rq3/8/5P2/2p1B1PP/Q2rRK2 b - - 0 1
[ ...Qxe2+ ]

e)
Marco Kirana vs Sergey Fedorchuk, Delft, 2010
1r3rk1/1b3ppp/pq6/3NQ3/P3pPn1/1P4P1/4P1BP/2R2R1K b - - 0 1
[ ...Qh6 ]

4a)
Sergey Fedorchuk vs Jose Reves Balleste

Sergey Fedorchuk puzzles, pt. v.
The color disk on the diagram indicates who moves first.
a)
White mates in 4.
Sergey Fedorchuk vs Nad-Titus Petre, Aix les Bains, 2011
4nrk1/1bqrbp1p/p2pp1p1/1p6/3BPP2/P1NB1R1Q/1PP3PP/R6K w - - 1 0
[ Qxh7+ ]

b)
Sergey Fedorchuk vs Christian Bauer, Belfort, 2012
1k1r4/1pprbp2/1q2p1p1/pP3n1p/P2P4/B1PR2PP/4QPB1/3R3K w - - 1 0
[ Bc5 Bxc5 dxc5 ]

c)
White mates in 4.
Sergey Fedorchuk vs Chanda Sandipan, Fujairah City, 2012
2r3k1/6pr/p1q3Q1/1p1pB3/4n1R1/P7/1PP2P2/1K1R4 w - - 1 0
[ Qxh7+ Kxh7 Rxg7+ ]

d)
Sergey Fedorchuk vs Sebastian Almagro Mazariegos, Navalmoral de la Mata, 2012
rn1qk2r/3n1ppp/p2bp3/1p6/3N2P1/2N4P/PPP2Pb1/R1BQR1K1 w kq - 1 0
[ Nxe6 fxe6 Qxd6 if Bf3 Qxe6+ Kf8 Bf4 ]

e)
Aurelio Chesa Chavarria vs Sergey Fedorchuk, Salou, 2012
r2qr1k1/1bp2pb1/1p1ppnpp/2nP4/1PP1P3/2N1B2P/3NBPP1/R2Q1RK1 b - - 0 1
[ ...Rxa1 Qxa1 Nfxe4 if Ndxe4 Nxe4 or if Ndb1 Nxc3 Nxc3 Ne4 ]

5b)
Sergey Fedorchuk vs Christian Bauer

Sergey Fedorchuk puzzles, pt. vi.
The color disk on the diagram indicates who moves first.
a)
Sergey Fedorchuk vs Bragi Thorfinnsson, Reykjavik, 2013
4kr2/5p2/3r1Q2/2q1pP2/pp2b3/8/PPP1B1PP/1K1R4 w - - 1 0
[ Bb5+ ]

b)
White mates in 3.
Sergey Fedorchuk vs Alon Greenfeld, Bastia, 2013
2r2b1k/Q6p/1n6/4p3/1q2Np2/1PN4P/PK3P2/6R1 w - - 1 0
[ Rg8+ Kxg8 Nf6+ ]

c)
White mates in 4.
Sergey Fedorchuk vs Robert Straver, Leiden, 2013
2r1r1k1/1pqbbpPp/p3p3/3p2B1/P5Q1/2PB1NP1/1P3P2/R5K1 w - - 1 0
[ Bxh7+ if Kxh7 g8/Q+ or if Kxg7 Bf6+ ]

d)
Sergey Fedorchuk vs Jacek Szwed, Legnica, 2013
3r4/k2N2pp/pnq1pp2/8/3Q4/7P/P4PP1/5RK1 w - - 1 0
[ Ne5 if Qd5 Nc6+ ]

e)
Sergey Fedorchuk vs Davorin Kuljasevic, Legnica, 2013
4r1k1/r4p1p/p1np1Pp1/1p5q/1P1pPR1N/P2p2Q1/1P1B2PP/6K1 w - - 1 0
[ Nf3 Ne5 Rf5 if Nxf3+ gxf3 or if Qg4 Rxe5 ]

6b)
mate in 3
Sergey Fedorchuk vs Alon Greenfeld

Sergey Fedorchuk puzzles, pt. vii.
The color disk on the diagram indicates who moves first.
a)
Lauren Van Niekerk vs Sergey Fedorchuk, Port Elizabeth, 2013
r2q1rk1/4bppp/4b3/3pP3/1npP1Q2/2B2N2/4BPPP/R1R3K1 b - - 0 1
[ ...Na2 if Rc2 Nxc3 Rxa8 Nxe2+ ]

b)
Nicolas Grandadam vs Sergey Fedorchuk, Zug, 2013
3r2k1/r4p1p/3P2p1/2p2q2/1pNb4/1P4P1/R3QP1P/4R1K1 b - - 0 1
[ ...Qxf2+ if Qxf2 Rxa2 ]

c)
White mates in 4.
Sergey Fedorchuk vs Ivan Ivanisevic, Paris, 2014
3bq1r1/1p1r1pp1/p3b1k1/3N1Rp1/P2QP3/2B4R/1P4PP/7K w - - 1 0
[ Qd1 if Rh8 Nf4+ gxf4 Qg4+ ]

d)
Sergey Fedorchuk vs Sebastien Pucher, Vlissingen, 2014
2rr1b2/5pkp/1pq5/p2NPp2/P7/1Q5P/1P1R2P1/3R3K w - - 1 0
[ Nf6 if Rxd2 Qg3+ mates ]

e)
White mates in 4.
Sergey Fedorchuk vs Jonathan Dourerassou, Bastia, 2014
1r3r1k/7p/qb1P2p1/1p6/2p1BQ2/2P4P/1P3P2/6RK w - - 1 0
[ Qe5+ Kg8 Bxg6 if Rf6 Bf7+ ]

7a)
Lauren Van Niekerk vs Sergey Fedorchuk

Sergey Fedorchuk puzzles, pt. viii.
The color disk on the diagram indicates who moves first.
a)
Evgeny Postny vs Sergey Fedorchuk, Montpellier, 2015
4rbk1/5p1p/q5pP/2p1P3/1n1pQ3/5NP1/4RPK1/3R4 b - - 0 1
[ ...f5 ]

b)
Black mates in 3.
Wesley So vs Sergey Fedorchuk, Montpellier, 2015
2n3rr/bpNP1k2/p4pb1/3P4/1P6/P1N2n2/1B3PB1/R3RK2 b - - 0 1
[ ...Bd3+ if Re2 or Ne2 Rh1+ ]

c)
Erik Oosterom vs Sergey Fedorchuk, Leiden, 2017
8/p1rq2pk/3p1n1p/1P2pRnP/4P1PK/P2PP3/3Q4/2R5 b - - 0 1
[ ...Nf3+ ]

d)
Sergey Fedorchuk vs Erik Blomqvist, Minsk, 2017
8/P3p1k1/8/4Np2/1P5p/7P/r5PK/8 w - - 1 0
[ 1.Nc6 if 1...e5 2.Na5 or if 1...Ra6 2.b5 ]

e)
Sergey Fedorchuk vs Grzegorz Gajewski, Katowice, 2017
5k2/2R4p/p4P1r/8/4N3/4P1K1/r7/8 w - - 1 0
[ 1.Ng5 if 1...Rxf6 2.Nxh7+ ]

8b)
mate in 3
Wesley So vs Sergey Fedorchuk

Sergey Fedorchuk puzzles, pt. ix.
The color disk on the diagram indicates who moves first.
a)
Black mates in 4.
Vojtech Zwardon vs Sergey Fedorchuk, Katowice, 2017
6k1/1Q3pp1/1p1p1q1p/1P3n2/3PB3/6PP/r4r2/3R1RK1 b - - 0 1
[ 1...Rxf1+ if 2.Kxf1 Nxg3+ or if 2.Rxf1 Qxd4+ ]

b)
Black mates in 5.
Matvey Galchenko vs Sergey Fedorchuk, Llucmajor, 2018
7k/1p2r1p1/pPq4p/7R/1P1Nn2P/P5p1/1B3r2/3Q2K1 b - - 0 1
[ 1...Ng5 2.Rxh6+ Qxh6 3.Qd2 Nh3+ 4.Kh1 Re1+ ]

c)
Adrian Suarez Uriel vs Sergey Fedorchuk, Guimaraes, 2018
6k1/2r2pp1/4b3/3n3P/3Qp3/4B2P/q1P3R1/2KR4 b - - 0 1
[ ...Qa3+ Kd2 Rxc2+ Kxc2 Nxe3+ Kb1 Nxg2 ]

d)
White mates in 2.
Sergey Fedorchuk vs Fabien Guilleux, Nancy, 2019
5k2/2R5/2NpB1P1/3pbP2/1p6/5K2/2r5/8 w - - 1 0
[ 1.g7+ ]

e)
Sergey Fedorchuk vs Bachana Morchiashvili, Teheran, 2019
3rr1k1/3b1p1R/p7/1p2qPb1/8/P2B3Q/1PP3PP/5R1K w - - 1 0
[ 1.Qg4 if 1...Kxh7 2.Qxg5 f6 3.Qg6+ Kh8 4.Rf3 or if 1...Qf6 2.Rh5 ]

f)
Sergey Fedorchuk vs Anastasia Savina, Brest, 2019
6k1/pp2p2p/2p1pqp1/8/3rPr1P/1P1P4/P2RQPP1/5K1R w - - 1 0
[ g3 if Rf3 Kg2 ]

g)
Mathhew George vs Sergey Fedorchuk, Nancy, 2019
3rr1k1/pb3pb1/1p3n1p/3n1Qp1/2NP4/PP3pP1/1B4BP/3RR1NK b - - 0 1
[ 1...fxg2+ if 2.Kxg2 Ne3+ ]

9c)
Adrian Suarez Uriel vs Sergey Fedorchuk

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