Here are some chess puzzles from the games of Lembit Oll.
White to move and win except where noted.

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

a)
Oll vs Arkadi Shmirin, Moscow, 1983
r5k1/3b2b1/p1p1p1Q1/4p3/3qN3/8/P1P3PP/1R5K w - - 0 1
[ c3 if Qc4 Nf6+ Kf8 Nxd7+ Kg8 Nb6
or if Qe3 Nf6+ Kf8 Nxd7+ Kg8 Nf6+ Kf8 Nh7+ w/Ng5
or if Be8 Nf6+ Kf8 Nxe8 Qf2 Nxg7
]

b)
White Mates in 5. Oll vs Yuri Balashov, Tallinn, 1983
3br1k1/4rp2/pnbp1RpQ/1pq1p1P1/3NP3/1P4N1/PBP4P/5R1K w - - 0 1
[ Ne6 Rxe6 Rxf7 ]

c)
Oll vs Emelbek Moldobaev, Moscow, 1983
6k1/pRr1q1pp/4p3/2r2p2/1Q6/P3PP2/4b1PP/B2R2K1 w - - 0 1
[ Rb8+ if Kf7 Qb2 ]

d)
White Mates in 4. Oll vs Orest Averkin, URS, 1985
4rk2/1p6/p1qr1bQ1/8/P7/1P5R/2P3PP/5R1K w - - 0 1
[ Rh7 ]

e)
Oll vs Gernot Gauglitz, Budapest, 1988
r2n2k1/pp2Rbp1/2p4p/2B1Q3/1P6/5PP1/q5BP/6K1 w - - 0 1
[ Bd4 if Ne6 Rxe6 or if Qb1+ Bf1 Qg6 Bd3 ]

Oll Puzzles, Part II. White to move and win except where noted.
a)
White Mates in 6. Oll vs Yuri Shabanov, Uzhgorod, 1988
6k1/1p3pp1/7p/4p3/1PB1Q3/2R3P1/5PPK/r2q4 w - - 0 1
[ Bxf7+ if Kxf7 Qf5+ Ke7 Rc7+ or if Kf8 Rc8+ Ke7 Qxe5+ ]

b)
White Mates in 6. Oll vs Kalle Kiik, Espoo, 1989
1r2nk2/1b2Rppp/p7/1p3N2/3Q4/5P2/PP4PP/2q2BK1 w - - 0 1
[ Rxe8+ Kxe8 Qe5+ Kf8 Qxg7+ Ke8 Qe5+ ]

c)
Oll vs Milan Mrdja, Rome, 1990
5r1k/6p1/1q4P1/4pB1n/1p2P3/7Q/PPP1b3/1KR5 w - - 0 1
[ Bg4 Bxg4 Qxg4 if Nf6 Qh3+ mates ]

d)
Oll vs Robert Kuczynski, Manila, 1992
rr1q2k1/5pbp/pn2pn2/Q2p1p2/N2P4/BP2P3/4NPPP/R1R3K1 w - - 0 1
[ Be7 Qxe7 Nxb6 if Ra7 Rc8+ ]

e)
Oll vs Igor Stohl, Manila, 1992
4r3/1bk2p1r/p1pbp1p1/2npB1P1/N3P2P/PP6/1KP3B1/3R3R w - - 0 1
[ Bxd6+ if Kxd6 e5+ ]

Oll Puzzles, Part III. White to move and win except where noted.
a)
White Mates in 3. Oll vs Vladimir Tukmakov, Moscow, 1992
2rk4/5R2/3pp1Q1/pb2q2N/1p2P3/8/PPr5/1K1R4 w - - 0 1
[ Rxd6+ ]

b)
Oll vs Aleksej Aleksandrov, Minsk, 1993
r1r3k1/5pp1/bpnbpq1p/p2pN3/3P1P2/2N3P1/PPQ1PRBP/R5K1 w - - 0 1
[ Nxc6 Rxc6 Nxd5 Rxc2 Nxf6+ w/Bxa8 ]

c)
Oll vs Mikhail Nedobora, Oviedo, 1993
7R/1pq1kp2/p3r1p1/P2pr3/1P6/2P5/6PQ/5R1K w - - 0 1
[ Rxf7+ if Kxf7 Rh7+ ]

d)
Oll vs Hannes Stefansson, Oviedo, 1993
R2r3r/2pk1p1p/2p1b1pb/8/1qNP2n1/4PN2/QP2B1PP/5RK1 w - - 0 1
[ Nfe5+ Nxe5 Nxe5+ Kd6 Rxd8+ ]

e)
Oll vs Alexei Shirov, Wijk aan Zee, 1993
r1r3k1/p5b1/b4ppB/3Pp3/4P1N1/1p5R/1n1K1PP1/1B5R w - - 0 1
[ Bxg7 if Kxg7 Rh7+ mates ]

Oll Puzzles, Part IV. White to move and win except where noted.
a)
Oll vs Johan Quist, Antwerpen, 1994
1r1r4/3n1qkp/5pp1/1BR5/1P6/6QP/6P1/4R2K w - - 0 1
[ Bxd7 ]

b)
Oll vs Ognjen Cvitan, Eupen, 1995
7k/rp2qp1p/p6Q/4p3/P3P1p1/8/1PP4P/3R3K w - - 0 1
[ Rd7 if Qe8 Qf6+ w/Rd8 ]

c)
White Mates in 6. Oll vs Mikhail Rytshagov, Riga, 1995
1r1b3k/1pr2R1p/p1b1B1p1/3pP1N1/P7/8/1PP3PP/5R1K w - - 0 1
[ Rxc7 if Bxc7 Rf7 Kg8 Rd7+ or if Bxg5 Rff7 ]

d)
Oll vs Sergio Giardelli, Chicago, 1997
6k1/2rb1p2/4p1p1/R1nPb2p/3N3P/4B1P1/2P3BK/8 w - - 0 1
[ Nc6 ]

e)
Oll vs Tal Shaked, New York, 1997
5r2/pp2r2k/2pR1b1p/2P1pb1q/2B5/1PB1PpRP/P2Q1P1K/8 w - - 0 1
[ Rxf6 if Rxf6 Qd8 or Bg8+ ]


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