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Here are some chess puzzles from the games of Vlastimil Jansa.
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)
Vlastimil Jansa vs Gyorgy Szilagyi, Bad Liebenstein, 1963
2rr1k2/pp3ppp/2bp1b2/2qNpP2/4P3/7Q/PPP1B1PP/1K1R1R2 w - - 1 0
[ b4 ]

b)
Vlastimil Jansa vs Detlef Neukirch, Sinaya, 1965
2r1r1k1/2qbbppp/p3pn2/1p2n3/3N4/P1NBB1Q1/1PP3PP/4RRK1 w - - 1 0
[ Bf4 if Nh5 Qh3 ]

c)
Vlastimil Jansa vs Detlef Neukirch, Harrachov, 1967
1k5r/1br2pp1/1q2p3/1p1pP3/3R4/2P1Q1P1/1P3P2/R4BK1 w - - 1 0
[ Rh4 ]

d)
Vlastimil Jansa vs Chee Seng Lee, Lugano, 1968
2rr2k1/4pb1p/p2p1p1P/5Pp1/1p2P1q1/1PN1Q1P1/1PPR4/2K4R w - - 1 0
[ Nd1 if Bh5 Rdh2 Qf3 Rxh5 ]

e)
Vlastimil Jansa vs Jiri Lechtynsky, Luhacovice, 1968
1k3r2/1pp3q1/pbn1R1bp/6p1/3p4/PB1N1QP1/1PPB1P1P/6K1 w - - 1 0
[ Rxg6 ]

Vlastimil Jansa puzzles, pt. ii.
The color disk on the diagram indicates who moves first.
a)
Vlastimil Jansa vs Zdenek, Prague, 1968
r4rk1/3n1ppp/pp2b3/2p1n3/P3P3/2P1BP2/3NB1PP/1R2K2R w K - 1 0
[ f4 if Ng4 Bxg4 Bxg4 h3 or if Nc6 f5 ]

b)
White mates in 4.
Vlastimil Jansa vs Frits Van Seters, Ostend, 1971
2k5/pbp1R3/1p6/4P2r/3pNb2/P2B4/1PP5/1K6 w - - 1 0
[ Re8+ Kd7 Nf6+ ]

c)
Vlastimil Jansa vs Zoltan Ribli, Bucharest, 1971
3r4/2q2p2/3rb1p1/2k2p1p/PppR1N1P/4P3/3R1PP1/3Q2K1 w - - 1 0
[ Nxe6+ fxe6 Rxc4+ if Kxc4 Qc2# or if Kb6 a5+ Kb5 Rxc7 ]

d)
Vlastimil Jansa vs Milan Vukic, Vrnjacka Banja, 1973
6k1/8/1p1p1bqp/2p1p2p/2P1Pr2/2N1Q2P/PP4P1/R5K1 w - - 1 0
[ Nd5 if Rh4 Rf1 Bg5 Qf3 ]

e)
White mates in 3.
Vlastimil Jansa vs Albin Planinec, Amsterdam, 1974
3r3r/4k1pp/p1qNpp2/1p2n3/4N1Pn/Q7/PPP4P/3R1R1K w - - 1 0
[ Nf5+ ]

Vlastimil Jansa puzzles, pt. iii.
The color disk on the diagram indicates who moves first.
a)
White mates in 3.
Vlastimil Jansa vs Ladislav Mista, Rimavska Sobota, 1974
4b1k1/6r1/1q2pQ2/bp1p1p2/8/1P3BP1/5PK1/2R4R w - - 1 0
[ Rh8+ Kxh8 Qf8+ ]

b)
Vlastimil Jansa vs Dragoljub Janosevic, Smederevska Palanka, 1978
3rnrk1/4bp1p/p5p1/1p1qp3/8/P1BBR2Q/1PP3PP/5R1K w - - 1 0
[ Rxe5 if Qd7 Qxh7+ Kxh7 Rh5+ mates ]

c)
Vlastimil Jansa vs Goran Cabrilo, Kladovo, 1980
3b2rr/2k5/p1bp1p2/1p1q1B1p/8/8/PPP1RQPP/1K3R2 w - - 1 0
[ Qa7+ Bb7 Be4 ]

d)
White mates in 2.
Vlastimil Jansa vs Jonathan Mestel, Esbjerg, 1981
4Q3/1bk2p2/1p5p/p2p1B2/3P2Pb/BP6/P2q1PKP/8 w - - 1 0
[ Bd6+ ]

e)
White mates in 5.
Vlastimil Jansa vs Dragutin Sahovic, Vrnjacka Banja, 1981
1n2Q3/1rp1b1k1/1p2b3/pP1pNn2/P2P3P/3Bq3/6P1/2R2R1K w - - 1 0
[ Qg6+ if Kf8 Rxf5+ or if Kh8 Bxf5 ]


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