Ro Co Bo
(Published on 1. August 2026, 11:18 by Torvelo)
Shade an orthogonally connected group of cells.
Clues tell how many cells in the corresponding row, column and box (not necessarily in this order) have the same colour (shaded/unshaded) as the clue cell.
Below is a small example puzzle:
The main puzzle can be solved online with Penpa+:
Solution code: The 3rd and 7th row from left to right (1 for shaded cells and 0 for unshaded cells)
Solved by JustinTucker, puzzler05, misko, CJK
