ASP-Completeness Proofs of Puzzles Using the T-Metacell Framework

Pencil puzzles are puzzles that can be solved by writing down solutions on a paper, using only logical reasoning. In this paper, we utilize the "T-metacell" framework developed by Tang and the MIT Hardness Group to prove the ASP-completeness of four new pencil puzzles: Grand Tour, Entry Exit, Yagit, and Zahlenschlange. The results demonstrate how versatile the framework is, offering new insights into the computational complexity of problems with various constraints.