Thursday, 2 October 2025

Walker

We’re just in time for the Connect Four world championship! The finalists this year appear to be evenly matched, so it’s likely we’ll see No Four in a Row…

Rules: Fill in all empty cells with either a shaded or empty circle so that no four identical circles appear in horizontally, vertically or diagonally consecutive cells anywhere in the grid.

Interface Note: For answer check, you can either place circles or shade cells with black circles. (Update: the placing circles answer check doesn't work , please use shading!) If you shade, you'll need to shade in the given black circles.

Example (Penpa): https://tinyurl.com/54jz5tck

Solve in 2:45 or under for a Speedy Sloth! 🦥
Complete in 5:30 or under for a Quick Crab! 🦀
And all solvers who complete the puzzle will earn a Fourier Fox Kestrel! 🐦

Puzzle (Penpa): https://tinyurl.com/3se8xfht