it's multiplier for damage when landed in a critical hit. the percentage before it is the chance for a critical hit. it can be anywhere from 5 to 15. and the multiplier can be 2-4.
Recent community posts
Some of the current top levels(anonymous guests can play):
Flip Flop - http://chesslike.net/lvl/151
Queen Bloodbath - http://chesslike.net/lvl/129
Tool1 - http://chesslike.net/lvl/130
King vs. Wives - http://chesslike.net/lvl/250 (I imagine this one will be removed once we implement the author needing to beat their own level for it to be published. Maybe we'll keep a few around. They're quite funny.)
If you or someone you know has made levels in the Chesslike level editor on Chesslike.net, please let them know, or post feedback here about how we could improve the experience. We're planning to add the following features:
-Must beat your own level for it to be published
-Social sharing of level deep links(playable by anonymous players)
-Improved display of player levels with paged, sortable lists
Any other improvement suggested will be taken seriously. Thanks in advance!