The digits 1-9 are still in play, appearing only once in each row and column, but now black squares break up the action, and each consecutive group of white squares must contain numbers that make up a straight, in any order. Any way you look at it, Str8ts adds up to challenging fun!
^Widderich, Jeff; Stuart, Andrew (2014). Dire Str8ts : The Gr8 New Number Logic Puzzle, Puzzlewright. BiggerBooks. ISBN 9781402794520 (revised Nov 2023)