Puzzle 1 - Krammnik - Aronian
White to move
White: Vladimir Kramnik
Black: Levon Aronian
2018 World Championship Candidates
A: 37. Ne8+, Kg8; 38. Qxe6+, Rff7; 39. Nf6+, Kg7; 40. Qg4+, Kf8; 41. Qg8+, Ke7; 42. Qe8+, Kd6; 43. Ne4#
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Puzzle 2 - Evgeniy - Shakhriyar
Black to move
White: Evgeniy Najer
Black: Shakhriyar Mamedyarov
2017
A: 23..., Nxf3; 24. Bxf3, Be5; 25. Rh1, Qg3+; 26. Kf1, Bd3+; 27. Be2, Rxb2!
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Puzzle 3 - Xiong - So
Black to move
White: Jeffery Xiong
Black: Wesley So
2017 US Chess Championship
A: 26. …, e5; 27. Rc4, Rfb8!!
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Puzzle 4 - Mamedov - Dominguez
Black to move (position bind)
White: Rauf Mamedov
Black: Leinier Dominguez
World Championship Rapid 2016
A: 35. Ng3 and white has no good moves!