Friday’s 5-second tactics

Solutions at the end. Good luck!
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gm L’Ami,Erwin
gm Petrosian, Tigran L
World Team Championship, Turkey, earlier this week. Position after 28 moves. Black’s position is riddled with pawn weaknesses and his last move (28…Nf6) brings about an abrupt, but inevitable, end.
WHITE TO PLAY AND WIN!
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gm Shoker, Samy
gm Nepomniachtchi, Ian
Turkey, yesterday. Position after 21 moves of play. Black’s last move, 21…Rd6, is a mistake that allows White to win material. Do you see it? The Israeli grandmaster did not!
WHITE TO PLAY AND WIN MATERIAL!
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SOLUTIONS
Petrosian, Tigran L.–L’Ami, Erwin: 29.Qxa5! 1-0 White emerges a piece up after 29…PxQ 30.RxR+ and 31.Rb7
Nepomniachtchi, Ian–Shoker, Samy: 22.Nxb7! Qxb7 23.Bxg3! fxg3 24.Bc4+! bxc4 25.Rxd6 Rb8 26.Qc3 with an extra Exchange and a big positional advantage.