Puzzle 1: 40th Ahmedabad 2020
White: Harshit Raja (2472) Black: Baskaran Adhiban (2654)
Black to move
Answer: 1. ..., Rg8 (bringing the last piece into the fight!); 2. Qxf4, exf4 was played in the game with a winning position for black. If 1..., Rg8, 2. Rxg8, Qxh3+; 3. Kg1, Qh1++
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Puzzle 2: 2020 Gibraltar Masters
White: Rameshbabu Praggnanandhaa (2602) Black: Veselin Topalov (2738)
White to move
Answer: 1. Nf6+, gxf6; 2. Rad1, Nxe5; 3. Rxd8, Rfxd8; 4. Qxf6 with a decisive advantage
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Puzzles 3: 2009 Agzamov Memorial
White: Timur Arestanov Black: Vitali Golod
Black to move
Answer: 1. ..., Qf3!; 2. gxf3, Nxf3+; 3. Kf1, Bh3++ because of this mate in the game white played 2. 0-0 but then his e4 pawn drops for free
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Puzzle 4: 1979 Soviet Union
White: Tigran Petrosian (2610) Black: Ivkov Borislav (2525)
White to move
Answer: 1. Rxd4 and black resigned due to , 1...., exd4; 2. Re5+, Kg4; 3. h3++