This is one of my favorite puzzle type. This is very old puzzle of this type created by me.
Paint some of the squares black to create continuous wall called Corral. Any part of the Corral does not touch itself, not even at diagonal. The numbers given outside measure how many unbroken lines of painted squares are there in any given row or column. For example, a clue of "4 8 3" would mean there are sets of four, eight, and three filled squares, not necessarily in order, with at least one blank square between successive groups. No part of Corral can form 2x2 square.