One shared element each day. Everyone gets the same puzzle.
There's a hidden chemical element. You have 6 guesses to find it. After each guess, every property lights up to tell you how close you are.
Daily — one element per day, shared by everyone. Build a streak and share your grid.
Marathon — solve element after element. Fewer guesses earns more points. Three lives, then the run ends.
A guess row shows six clues:
Z atomic number · Grp group (column) · Per period (row) · Cat category · Blk s/p/d/f block · State at 25 °C
Green exact · amber close / same family · grey miss. Arrows point toward the hidden value.
Marathon best: 0