Amoeba Festival (Yajilin + Nawabari)
(Published on 27. April 2025, 19:33 by sfushidahardy)
Amoeba Festival
This puzzle was made for the semi-finals of the Pencil Puzzle Madness tournament. I hope you enjoy the puzzle!
- This is a hybrid of 'Nawabari' and 'Yajilin' with a unified clue-type to be described in the latter half of the rules.
- Nawabari: divide the grid into rectangular regions of cells. Every region contains exactly one clue.
- Local Yajilin: shade some non-clue cells in the grid. Shaded cells cannot share an edge, even across Nawabari region borders. Within each Nawabari region, draw a loop that travels orthogonally through the centers of all unshaded cells (except the clue cell). A valid loop requires at least four cells.
- Hybrid clues: clues indicate the number of Nawabari region borders minus the number of shaded cells in the indicated direction. (For example, a "1" clue might see three region borders and two shaded cells.) The grid-border counts as a Nawabari region border. A '?' clue contains no numerical information.
Other puzzles I've made for the tournament:
Round one: Anableps (Aquarium + Myopia).
Round two: Canyonlands (A38 + Rassi Silai).
Round three: Zombie! (Araf + Yin-Yang).
Final: Janus (Chiaroscuro + U-Bahn).
Solution code: Non-clue cells in row 3: 'T' for turn, 'S' for straight, 'X' for shaded, and a forward-slash '/' at internal region borders. (For the example puzzle, the solution code is 'TSSTX/TTS'.)
Comments
on 14. June 2025, 14:05 by Piatato
Fun and smooth, thanks!
on 29. April 2025, 15:33 by Christounet
So many mini puzzles in that grid ! Very fun! Thanks :)
on 29. April 2025, 03:01 by askaksaksask
Delightful puzzle. A great blend of Yajilin and Nawabari logic to drive the solve forward. I found the midsolve to be the most difficult, but each stage of the puzzle resolves so nicely. Really nicely done. This is a must do, and, it's accessible. Thank you very much!
on 27. April 2025, 19:52 by Agent
Very original logic, a pleasant solution path, and impressive minimalism to resolve all the regions!
