Rice has been spilled before the Count. He cannot resist: every grain must be counted.
Count the grains on the board and type the number, then press Submit (or Enter).
You have 10 seconds per level. A right answer scores 20 points, plus 1 point for every 0.2 s left on the clock (rounded up), plus the level number: level 4-2 is the 17th level, so it adds 17.
A wrong answer is a strike, and the clock keeps running. Three strikes and the night is over.
If the clock runs out, the night is over too.
There is no pausing. Once a board is shown, its clock keeps running, even if you leave the page or reload.
There are 10 stages of 5 levels. Each stage lays the rice out its own way: lone grains, blocks, overlapping blocks, blocks with holes…
Everyone gets the same 50 boards. Most nights end early: what counts is how far you get. A new run arrives every day at midnight, and you get one try per day.
Tip: blocks are rows × columns. Count a side, multiply, then fix up the extras.