![Kirchheim, Germany. 30th Sep, 2019. A participant of the Sudoku World Championship broods over his puzzle. Until Saturday, around 230 ratefüchse from around 30 countries will be competing against each other in Kirchheim, Germany. 30th Sep, 2019. A participant of the Sudoku World Championship broods over his puzzle. Until Saturday, around 230 ratefüchse from around 30 countries will be competing against each other in](https://c8.alamy.com/comp/2A24C2E/kirchheim-germany-30th-sep-2019-a-participant-of-the-sudoku-world-championship-broods-over-his-puzzle-until-saturday-around-230-ratefchse-from-around-30-countries-will-be-competing-against-each-other-in-the-competition-credit-uwe-zucchidpaalamy-live-news-2A24C2E.jpg)
Kirchheim, Germany. 30th Sep, 2019. A participant of the Sudoku World Championship broods over his puzzle. Until Saturday, around 230 ratefüchse from around 30 countries will be competing against each other in
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2019 Hard Sudoku 16 X 16 Puzzles: 100 Hard Sudoku Puzzles (2019 16 X 16 Hard Sudoku Puzzle Books For Adults): Woodyear, Andrew: 9781790451906: Amazon.com: Books
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MOSCOW, RUSSIA - APRIL 2, 2019: paper playfield of Sudoku board game on green baize table. Sudoku is a logic combinatorial number placement puzzle Stock Photo - Alamy
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