Binairo

Easy Binairo uses a 6×6 grid — 36 cells, three 0s and three 1s per row and column. Every puzzle at this level is verified to require only T1 techniques: consecutive forcing (two identical adjacent cells force their neighbors opposite) and count completion (a row with three 0s must have all remaining cells as 1s).

Start by scanning for pairs. If two 0s sit next to each other, the cells on either side must be 1. After each placement, recheck counts across the updated row and column. These two rules chain together quickly on a 6×6 grid — easy puzzles are intentionally a little challenging, not trivial.

Once easy puzzles take you under 2 minutes, move to medium.