Light Up


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Light Up (Akari) is a logic puzzle with simple rules and challenging solutions.

The rules are simple.Light Up is played on a rectangular grid. The grid has both black cells and white cells in it. The objective is to place light bulbs on the grid so that every white square is lit. A cell is illuminated by a light bulb if they're in the same row or column, and if there are no black cells between them. Also, no light bulb may illuminate another light bulb.
Some of the black cells have numbers in them. A number in a black cell indicates how many light bulbs share an edge with that cell.
Left click a square to place a light bulb. Right click to mark with X.

Video Tutorial
Hide the rules
Light Up

Speed Rank Statistics - numbrr

Player rank: 1 / 132895
Total score: 4042.353
Find it
Global position
1. numbrr
321
4042.353
2. qqwref
266
2815.579
3. Make
286
2494.141
4. vowels
216
2324.061
5. jaybrainer
274
2317.288
Puzzle position (light-up)
1. numbrr
321
146.298
2. gtkrouwel
138
119.334
3. Yeti
142
116.546
4. TashiroMiraki
230
115.737
5. mtanzer
140
115.111
The scores are updated every hour
score = log10(number of players / player rank)
 
best
mo3
ao5
ao12
all
 
www.puzzle-light-up.com