One of the solutions to the classic version of
this puzzle is shown in the upper illustration. At the same time this
is one of the solutions to Puzzle 2.
The solution to Puzzles 3&4 with the rectangle is shown in the middle
The solution to Puzzles 5&6 with the rectangular frame is shown in the
The new shapes for the Diamond puzzle - both rectangle and rectangular
frame - were discovered by Serhiy Grabarchuk.