Welcome to The Russian Crossword Challenge: Building Vocabulary In our never-ending quest to bring you interesting language materials, we hit upon the Russian Crossword Challenge. What better way to build and reinforce vocabulary! The current offering includes both global and topic-specific crosswords. Additional puzzles will be added to the site aperiodically. There are two versions of each puzzle: Basic Puzzles, in addition to horizontal and vertical clues, include a list of answers in random order. These are intended for intermediate level linguists. Master Puzzles, intended for intermediate to advanced linguists, only have the horizontal and vertical clues. PRINT the Puzzles and Clues and Have Fun. When you're finished, check your findings against the solutions.