The world's first crossword puzzle had zero black squares

A Diamond-Shaped Newspaper Filler That Changed Sunday Mornings

Arthur Wynne stood at his desk in the New York World offices on Manhattan's Park Row in December 1913, staring at a blank space in the Sunday Fun section. The Liverpool native, who'd emigrated to America at nineteen, had been tasked with creating something to entertain readers during the Christmas season. Drawing inspiration from a Victorian parlor game called Magic Squares his grandfather had taught him, Wynne sketched out a hollow diamond grid containing 32 clues and a web of interconnecting words. He labeled it "Word-Cross" and submitted it for the December 21 edition, never imagining he'd just invented what would become America's most popular puzzle form.

The puzzle appeared on page 31 of the Sunday supplement, wedged between jokes and illustrations. Readers encountered a diamond containing 72 lettered cells arranged in continuous rows, with absolutely no black squares breaking up the white space. Clue 2-3, for instance, read "What bargain hunters enjoy," with the answer SALES running seamlessly into the next word without visual separation. The hollow center gave the puzzle its distinctive shape, but also made it fundamentally different from every crossword published since. Within weeks, the World's mailroom reported unprecedented reader mail demanding more puzzles, though many letter-writers complained about the confusing lack of visual boundaries between answers.

The Continuous Grid System Nobody Could Navigate

Wynne's original Word-Cross operated on a principle that seems almost perverse to modern solvers: every cell contained a letter, creating an unbroken fabric of characters. Clue 14-15 asked for "A vehicle," expecting MOTOR, which flowed directly into 16-17's answer without pause. Solvers tracked word boundaries solely through numbering—2-3 meant the word started at cell 2 and ended at cell 3, requiring mental bookkeeping that made the puzzle significantly harder than Wynne intended. The New York World received letters from readers who'd spent entire Sunday afternoons wrestling with the spatial logic, some praising the mental challenge while others demanded clearer visual guidance.

The diamond configuration made construction equally challenging. Wynne had to ensure every intersecting word worked without the luxury of blocked squares to terminate difficult letter combinations. When he struggled with corner words, he couldn't simply black out problematic cells—he had to rework entire sections of the grid. By February 1914, the puzzle had rotated ninety degrees and been rechristened the "Cross-Word," but still featured wall-to-wall letters. Wynne himself later admitted to the New York Times that his early grids sometimes contained obscure words like NARD and ANTRE because the continuous format left him no escape routes from awkward letter patterns.

The Secretary Who Triggered a National Craze

Margaret Petherbridge, a 21-year-old Smith College graduate working as secretary at the New York World, became Wynne's assistant in 1921 when reader submissions overwhelmed him. She immediately recognized the puzzles' commercial potential but also their design flaws. In 1924, Petherbridge partnered with two recent Columbia graduates, Richard Simon and Max Schuster, who'd just started a publishing house in a single room at 37 West 57th Street. They produced the first crossword puzzle book as a promotional gambit, attaching a pencil to each copy and pricing it at $1.35. The book sold 350,000 copies in its first year, launching Simon & Schuster as a major publisher and making Petherbridge, who became Margaret Petherbridge Farrar, the most influential puzzle editor in American history.

Farrar systematically introduced black squares between 1924 and 1926, discovering they allowed for symmetrical designs and eliminated Wynne's awkward vocabulary compromises. The 1925 Simon & Schuster Second Cross Word Puzzle Book featured grids with strategic blocking that created the familiar checkerboard aesthetic. By 1942, when the New York Times finally added a daily crossword after dismissing them as a fad for decades, the black-square format was universal. Farrar edited the Times puzzle until 1969, establishing rules that persist today: black squares must form symmetrical patterns, answers must be at least three letters long, and every letter must appear in both an Across and Down word—standards impossible under Wynne's original continuous design.

Why Modern Constructors Still Study That First Grid

The original December 21, 1913 Word-Cross remains required study at crossword construction workshops and appears in exhibits at the Strong National Museum of Play in Rochester, New York. Contemporary puzzle makers like Brendan Emmett Quigley and Elizabeth Gorski examine Wynne's diamond to understand how constraints drive creativity—his lack of black squares forced inventive clue writing and unexpected word connections that later puzzles, with their blocking shortcuts, sometimes lack. The American Crossword Puzzle Tournament, founded by Will Shortz in 1978 and held annually in Stamford, Connecticut, occasionally features retro puzzles mimicking Wynne's continuous-grid style, and solvers consistently report they're significantly more difficult than conventional formats.

Wynne died in 1945 in Clearwater, Florida, having never profited from his invention beyond his newspaper salary. He'd moved on to editing other sections of the World by 1918, leaving puzzle development to others. Today, an estimated 50 million Americans solve crosswords weekly, generating a puzzle industry worth approximately $500 million annually through apps like the New York Times Crossword, which has 1.3 million subscribers. Yet that first puzzle's DNA persists in ways beyond format—Wynne's instinct that wordplay could be both challenging and entertaining, that blank space on a page could become an intellectual playground, remains the foundation. The black squares we take for granted aren't merely design elements; they're the solution to a problem Wynne never fully solved, the innovation that transformed his curious experiment into an enduring daily ritual.