Zebra is a daily logic-grid puzzle — the Einstein riddle, one fresh grid every day. Read the clues, deduce who sits where, and commit each cell against the clock.

☕ Coffee is a 4×4 daily challenge. 🌊 Deep is a 5×5 bonus grid, available every Friday. Every commit is final and counts; your score is the number of times you changed your mind. Zero overwrites is Flawless.

One puzzle a day, the same for everyone, resetting at midnight Toronto time. No accounts, no hints beyond a single check, no live correctness feedback. Just you and the grid.