Puzzle 1:
White: Olexiy Bilych (2318) Black: Vladislav Bakhmatsky (2438)
White to move
Answer:
1. Ng5+, Kd8; 2. Ne6+, Kd7; 3. Rxe7+, Kxe7; 4. Qg7+, Ke8; 5. Qf8+, Kd7 ; 6. Qf7++
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Puzzle 2:
White: Ivan Akimov (2272) Black: Aleksei Pridorozhni (2348)
White to move
Answer:
1. Qxd8+ and black resigned play may have continued , Kxd8; 2. 0-0-0+, Qd3; 3. Rxd3+, Bxd3; 4. Rd1 with white netting a free piece
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Puzzles 3:
White: Sandor Videki (2405) Black: Viacheslav Mansurov (2400)
Black to move
Answer:
1..., Nh3+; 2. gxh3, Qd4+ ; 3. Kg2, gxh3+; 4. Kg3, Qg4++
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Puzzle 4:
White: Yang Hsu (2290) Black: John Nunn (2615)
Black to move
Answer:
1..., Nxg3; 2. Kxg3, Qh4+!; 3. Kh2, Qxe1 and white is up material
the game continued with 4. Nf1, fxe4; 5. Ng3, exf3; 6. Bxf3, Nxc4
if the queen was captured in 1. ..., Nxg3; 2. Kxg3, Qh4+; 3. Kxh4, f4! (no going back home for the white king); 4. Kg5, Rff8! (preparing Be8 at the correct moment) ; 5. h4, h6+; 6. Kxg6, Be8++