Chess Puzzles and Tactics

Mate in 2 chess puzzles

Chess Puzzle #335 | White has a winning position, can you find the quickest route to the victory?
Chess Puzzle #412 | There are a couple of mate in 3 solutions to this puzzle, but only one mate in 2 solutions. Can you see it?
Chess Puzzle #424 | White to Play and Win. A position from a game of Brazilian Grand Master Henrique Mecking.
Chess Puzzle #345 | There is a powerful move that wins the game for white, can you spot it?
Chess Puzzle #454 | In this complex looking position, white can deliver checkmate in two moves.