Puzzles
PUZZLE NO. 001 · INDUSTRY EDITION
CROSS-CONNECTIONS
A crossword for those who know the difference between a flue and a flange. Tap a square to begin — every clue draws from the world of pumps, boilers, and heat transfer.
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Select a square to begin.
PUZZLE NO. 001
PRESSURE CHECK
A logic puzzle. Every row, column, and 3×3 grid must contain the digits 1 through 9.