Star Battle
Medium (8×8, 1★)About medium Star Battle (8×8, 1★)
Medium Star Battle uses an 8×8 grid with 8 irregular regions and 1 star per row, column, and region. The larger grid means regions are more varied in shape, with some spanning multiple rows and columns. Small-region shortcuts still work, but you will also need row and column counting to make progress.
When a region's valid cells all fall in a single row, that row is “claimed” by that region. No other region can place its star in that row within the overlap zone. This confinement technique is the key to medium-level solving. Practice spotting it and the 8×8 grid opens up.
Marking cells is more important at this size. The 64-cell grid has enough going on that you cannot keep everything in your head. Mark eliminated cells faithfully and re-scan after every star placement. Ready for more? Try hard (10×10).