Puzzle with number squares - Answers with 6 Letters

Answer:

SUDOKU

Length:

Similar Crossword Questions:

Daily crosswords, to puzzle pros (so-called from the number of squares per side)
Welcome mat spot (our puzzle title hints at the theme revealed by the pattern of circled squares)
Number of X's in this puzzle's answer
9x9 number puzzle
Number of protons by which the elements in the four longest puzzle answers have been enhanced
Minimum number of times each letter of the alphabet appears in this puzzle's solution
Mail conveniences ... or a hint to eight squares in this puzzle
Like some crossword-puzzle squares
Process by which an element's atomic number may be reduced, and a hint to this puzzle's theme
Event where the number 12 is important, and a feature of 12 two-word answers in this puzzle
Trains, in a way, and the key to 18 of this puzzle's black squares. (Ones that begin with the keyword are asterisked. The others are for you to discover.)
Work by Sir Edward Elgar hinted at by this puzzle's circled squares
Economic term named the 2011 Word of the Year by the Oxford English Dictionary...and a description of 6 squares in this puzzle
Start of a brainteaser whose answer appears in order, from top to bottom, in this puzzle's circled squares
Landmark inaugurated 3/31/1889 whose shape is suggested by nine squares in this puzzle's completed grid
What the three sets of circled squares in this puzzle represent
Drink cooler ... or a hint to six squares in this puzzle's answer
Company "sorted" in this puzzle's circled squares
Number of times this puzzle's theme word appears diagonally in the grid (to complete the puzzle, shade those words plus the Down answers that begin where they meet)
What the highlighted squares in this puzzle represent
Web concerns ... and based on six familiar names hidden in rows 1, 4, 12 and 15 of this puzzle grid, what the black squares in those rows symbolize
Number of times the letter 'U' appears in each of this puzzle's eight longest answers
Puzzle based on Latin Squares
Company whose movies, not counting sequels, are all included in this puzzle [Circled Squares: 2009]
When doubled, a number puzzle