Heap, stack.
The first hint to crack the puzzle «Heap, stack.» is:
It is a word which contains 4 letters
The second hint to crack the puzzle «Heap, stack.» is:
It starts with letter P
P
The third hint to crack the puzzle «Heap, stack.» is:
It ends with letter E
P
e
Looking for extra hints for the puzzle «Heap, stack.»:
Click on any empty tile to reveal a letter
P
e
The answer for the puzzle «Heap, stack.» is:
P
i
l
e