Zipping Through the Fog
- Fog of war
- Anti-knight
- Zipper lines
- Region sum lines
The brief
Place the digits 0-8 once each in every row, column, and 3*3 box. Cells a knight's move apart cannot contain the same digit. Region Sum Lines: Along each blue line, digits have an equal sum in every box it passes through. Zipper Lines: Along each purple lines, digits equidistant from the center of the line add up to the digit in the center of the line. The center is marked with a circle. Fog: Some of the grid is hidden by fog. Entering correct digits will remove fog from surrounding cells.