Chess Puzzles and Tactics

Endgame Puzzles

Chess Puzzle #351 | Black has a dangerous looking passed pawn. What should White play?
Chess Puzzle #396 | White king at a8 preventing his a7 pawn from promoting while black pawns have a clear path forward, What should white do?
Chess Puzzle #394 | In this complex looking position, white has an advantage. Can you find the winning combination?