or solve online (using our beta test of Penpa-Edit tools; use Tab to alternate between letter entry and shading)
Theme: Hidden words (each row of letters forms an English word like SERF.)
Rules: Put each number (given as a word) into the grid, one letter per cell, as a snakelike strip which does not touch or cross itself. Some letters of the words are given. The remaining cells should be painted black to form a continuous wall as in a Nurikabe puzzle with no 2×2 shaded regions. Or see here.
Answer String: Enter the contents of each marked column from top to bottom, using X (capital letter) for each blackened square and capital letters for each island cell, and separating the columns with a comma.
Time Standards (highlight to view): Grandmaster = 2:30, Master = 3:30, Expert = 7:00