Numberlink

Problem Description

Numberlink is a type of logic puzzle involving finding paths to connect numbers in a grid. The player has to pair up all the matching numbers on the grid with single continuous lines (or paths). The lines cannot branch off or cross over each other, and the numbers have to fall at the end of each line (i.e., not in the middle).

Input format

Output format

Example

Author(s)

• Author: Naoyuki Tamura
  • Affiliation: Kobe University, Japan
• Author: Neng-Fa Zhou
  • Affiliation: CUNY Brooklyn College and Graduate Center, USA