Tantan Dai, from China, is one of the world’s fastest sudoku solvers. Anna Shechtman is an American crossword compiler. They speak to Kim Chakanetsa about the world of puzzles. Show more
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Tantan Dai, from China, is one of the world’s fastest sudoku solvers. Anna Shechtman is an American crossword compiler. They speak to Kim Chakanetsa about the world of puzzles. Show more