🪤 Value Trap

$ man value-trap

Value means how light or dark something is, ignoring its colour. One grey target, six loud colours — tap the colour that is exactly as light as the grey. Keys 1–6 work too; with a mouse, each chip wears its number.

The right chip scores 100; a miss still scores by how close its value was. The window is measured against that item's own gap, so the nearest wrong chip is always worth a visible handful of points whether the item is easy or hard. Six items per round, and the traps get subtler as you go.

After each pick every chip flips to the grey of its own value with its number on it — the squint view, the same thing your eye does when you half-shut it and the colours drop away. It stays up until you say so — “next”, or a tap anywhere on the board, chips included, or Enter — and the last one stays after the round ends. That number is L*: 0 is black, 100 is white. Labels are measured from the exact pixels shown, so the winner can sit a rounding hair off the target's number.

Studio tip: half-shut your eyes, or imagine the picture in black and white — the colour is shouting, the value is whispering, and it is the value that makes a painting read.