🧠 Brain training

Brain training here means planning, not twitch: puzzles where the right move is the one that keeps the board open two turns from now. They reward patience and punish greed, and they are mercifully quiet — no music, no timer unless you want one, nothing a colleague would hear over a partition.

Timed boards count only clean solves (no hints) and keep a best per difficulty; point-based puzzles keep a best per mode. The house target on each card is a benchmark we set, not a stranger’s record, and your own best lives in this browser unless you opt in to post it.

• Elements ~6 min · Easy to learn No timer, no pressure — just a grid that slowly fills up while your coffee cools.
• 2048 ~5 min · Easy to learn· since 2014 Four arrow keys, one corner strategy, and suddenly it’s 3 pm.
• Minesweeper ~4 min · Takes practice· since 1990 The game that shipped with every office PC for a reason. Beginner to Expert.
• Sudoku ~10 min · Takes practice· since 1979 Looks exactly like work from across the room. Easy to Expert, saves mid-puzzle.
• Untangle ~4 min · Easy to learn· since 2005 No timer pressure until you start dragging, and every puzzle has a solution. Pure spatial calm.
• Color Lines ~8 min · Easy to learn· since 1992 Turn-based and unhurried. Your game saves itself when the meeting starts.