Kurochute (クロシュート) rewards players who track orthogonal coordinates and crosshairs across the grid.

• Crosshair Hover: Hover or tap any numbered clue to light up its up-to-4 target cells located D steps away.
• Single Black Target: Exactly one of those target cells must be shaded black; all others in range are white.
• Mutual Orthogonal Safety: Shading a cell black immediately makes all four of its direct neighbors white, which often resolves targets for other clues nearby.
• Single White Sea: Keep an eye on connectivity to ensure no white cell or pocket gets completely surrounded and marooned by black cells and board boundaries.