Welcome to piCROSSword!
The numbers on the top and left indicate where black squares should go (following Nonogram/Picross logic). Turn a square black by clicking once.
The letters on the bottom and right indicate which letters appear in that row or column. Note that the letters are scrambled.
Click a square twice to turn it white, then simply type the letter to add it.
Fill in letters as you go, as they can help you figure out where black squares go as well.
Thanks for playing!