How to play Gamelan

  1. Draw one to three edge-to-edge lines in every cell. Within any one cell, the lines will be entirely either vertical or horizontal. Also draw the borders between regions, defined in rule 2.
  2. An orthogonally contiguous set of three or more identical cells is a region. All cells must be part of a region, all regions must be rectangular, and there will be no ambiguity in the board's solution as to how it is divided into regions. Adjacent regions may hold the same type of cell.
  3. A number on the board indicates the "gamelan sum" of the region it's in: the region's size in cells times the number of lines inside any cell in the region. There will be at most one number per region.
  4. Each margin number indicates the total number of lines in the counted cells that face toward that number. A single cell with 3 lines pointed toward the margin number counts as 3, not 1.

Breaks rule 1: Draw one to three edge-to-edge lines in every cell. Within any one cell, the lines will be entirely either vertical or horizontal. Also draw the borders between regions, defined in rule 2.

Breaks rule 1: Draw one to three edge-to-edge lines in every cell. Within any one cell, the lines will be entirely either vertical or horizontal. Also draw the borders between regions, defined in rule 2.

Breaks rule 1: Draw one to three edge-to-edge lines in every cell. Within any one cell, the lines will be entirely either vertical or horizontal. Also draw the borders between regions, defined in rule 2.

Breaks rule 2: An orthogonally contiguous set of three or more identical cells is a region. All cells must be part of a region, all regions must be rectangular, and there will be no ambiguity in the board's solution as to how it is divided into regions. Adjacent regions may hold the same type of cell.

Breaks rule 2: An orthogonally contiguous set of three or more identical cells is a region. All cells must be part of a region, all regions must be rectangular, and there will be no ambiguity in the board's solution as to how it is divided into regions. Adjacent regions may hold the same type of cell.

Breaks rule 2: An orthogonally contiguous set of three or more identical cells is a region. All cells must be part of a region, all regions must be rectangular, and there will be no ambiguity in the board's solution as to how it is divided into regions. Adjacent regions may hold the same type of cell.

Breaks rule 3: A number on the board indicates the "gamelan sum" of the region it's in: the region's size in cells times the number of lines inside any cell in the region. There will be at most one number per region.

Breaks rule 3: A number on the board indicates the "gamelan sum" of the region it's in: the region's size in cells times the number of lines inside any cell in the region. There will be at most one number per region.

Breaks rule 4: Each margin number indicates the total number of lines in the counted cells that face toward that number. A single cell with 3 lines pointed toward the margin number counts as 3, not 1.

Solved! :D