Learn Ursograma

The rules and the techniques for solving nonograms by logic alone, in order: from the first lines to the ones that need more attention.

1. How to play Ursograma — The rules, colour ursogramas, the controls and the first techniques.
2. Overlap — Push the groups left and right, and fill what they share. The slack, several numbers and colour.
3. From the edges — A filled cell next to the edge pins down the first group. Near the edge, which group it is, after closing a group, and colour.