Gather around the tree! Divide the green area into pentominoes, i.e. orthogonally-connected groups of 5 cells. No two pentominoes have the same shape even when rotated or reflected. Digits may not repeat in a pentomino. The tree has ornaments (dots) of several colours. If a pentomino contains a green dot, it is a Germanimo: adjacent pairs of digits inside it differ by at least 5. If it contains a red dot, it is a Renbanimo: it contains 5 consecutive digits. Black, white, and silver dots show a boundary between two pentominoes. Black means their totals are in a 1:2 ratio. White means their totals differ by one. Silver means their totals are equal. Along a thermometer, digits must increase from the bulb end.