Puzzle #1:
T R G S J
X O K L I
M D V B N
W P   A E
U Q H C F

Puzzle #2:
  A B C D
F G H I E
K L M N J
P Q R S O
T U V W X

Puzzle #3:
This puzzle has no final configuration.

Puzzle #4:
B P J E Q
T A M R G
H F L D S
U K V   X
C N O I W

Puzzle #5:
M I H L K
N Q D   S
A R G J C
U E F B T
W X O P V

Puzzle #6
This puzzle has no final configuration.