Fee: This puzzle is tricky but very cute when you realize the answer. Look for forcing moves. Don't forget that on an open board the enemy queen will be very good at "perpetual checking" your king around, so you have to prevent that from happening!
Fi: White is up material but how can you stop that a-pawn from queening?!
Fo: This is a "Domination" puzzle, and that's the only help you get!
Fum: If anyone gets this....I will be so surprised (and happy)
ALL PUZZLES ARE WHITE TO PLAY AND WIN.
Send your answer by Message to the PinkHamster
Puzzle 1: Fee
FEN: 8/8/8/8/7k/6pq/R1R5/4K3 w - - 0 1
Puzzle 2: Fi
FEN: 1N6/8/K7/3k4/3p3B/p7/2PP4/8 w - - 0 1
Puzzle 3: Fo
FEN: 5q2/1p1kp3/1P4p1/4B3/3N3K/1B6/5P2/8 w - - 0 1
Puzzle 4: Fum
FEN: 2b4k/8/5Pr1/5N2/8/8/8/K1B5 w - - 0 1
BONUS PUZZLE:
White to Play and Checkmate in 17 moves!
[NOTE: Solving this problem will help you solve FUM...thanks to stupendouscheese for showing it to me!!]
FEN: k7/1pP5/1P6/8/8/K4rPR/1PPPPP2/8 w - - 0 1