Today’s 5-second tactics!

The examples below are all taken from the recently completed Coimbra International Open. Good luck! Solutions later.
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im Butkiewicz, Luk
Pinho, Paulo
BLACK TO PLAY AND WIN!
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Pais,Bruno
im Butkiewicz,Luk
WHITE TO PLAY AND WIN!
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Ferreira,Luis
fm Silva, Luis
WHITE TO PLAY AND WIN!
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Coimbra 2014.4.26 Pinho, Paulo–Butkiewicz, Lukasz: 21… Rxe2! 0-1 A bit premature but understandable. After 22.Rxe2 Rxe2 23.Qxe2 ( no better is 23.Kxe2 Bb5+ 24.Rd3 Qg4+ etc ) Bb5 24.Rd3 Qf5 etc.
Coimbra 2014.4.25 Butkiewicz, Lukasz–Pais, Bruno: 18.Bh6!! 1-0 Wins decisive material or mates. For example, 18…PxB? 19.Rxf7 RxR 20.Qg8++ or if instead 18…Rg8 19.Rxf7 etc or 18…g6 19.BxR NxB 20.Qxe5+ and mate next
Coimbra 2014.4.26 Silva, Luís–Ferreira, Luís Pedro: 28.f7+ Kh7 29.Bxh5! 1-0 Mates or wins the Queen.