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#21

Train Tracks Daily Puzzle #21

Sunday, October 18, 2026 · Hard 10×10

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About this puzzle

Daily #21 is a hard (Devious) grid of 10×10 squares with 3 pieces already in place and a route of 39 track squares from A to B. Expect roughly 10-25 min (our estimate for the level). Usually needs a short “what if” test on a single cell or connection.

Lay one continuous track from A to B. The numbers show how many squares in each row and column hold track. New to the puzzle? Read how to play Train Tracks first, or keep the solving techniques open in another tab.

A new daily puzzle appears every day at midnight US Eastern time: Easy on Monday and Tuesday, Medium from Wednesday to Friday, Hard at the weekend.

Milo Marwick

Logic puzzles and puzzle books by Milo Marwick: Train Tracks, murder mystery logic, spatial reasoning and mystery coloring. Everything you need is on the page.

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