Video transcript
Never played a nonogram? This tiny grid is hiding a picture, and you can uncover it without guessing. Each number tells you the length of a connected run of filled squares. The numbers at the left describe rows; the numbers above describe columns. Both directions have to agree.
The second row has a clue of five and exactly five squares, so the whole row is filled. The third row and middle column work the same way. These full lines give us a reliable starting point without using the picture shape as a clue.
The first column needs a run of two and already has two touching filled squares, so that run is complete. Every other square in the column is empty. The last column works the same way. Crosses mean definitely empty, not a mistake.
The top row needs three squares and both ends are now empty, leaving exactly the middle three. The fourth row follows the same pattern, while the final row already has its single required square. The picture is complete using full lines, completed runs, and crossing clues—no lucky guesses.
Check every row and column before finishing. If you lose your place, return to a full line or completed run. Then replay this same five-by-five puzzle and explain why each move is certain before you make it.