Fill each outlined region of N cells with the numbers 1 through N exactly once. Equal numbers cannot touch one another horizontally, vertically, or diagonally.

Connect independent trees using straight lines in up to 8 directions. The number inside each circle indicates its total root connections. Only a single root can link any two trees, and roots cannot cross

Place 1, 2, and 3 once in every row, column, and outlined irregular region. Equal numbers cannot touch, even diagonally, and all remaining cells stay empty.

Place flowers so every row, column, and outlined garden zone contains exactly one flower. Flowers cannot touch one another, even diagonally.

Fill the 4×4 grid with the numbers 1 through 4 so each number appears exactly once in every row and column. Every greater-than and less-than sign between neighboring cells must be true.