Efficiency (en)

Efficiency is the 3BV of a board divided by the number of clicks used to solve it. The less clicks used, the higher the efficiency. An Efficiency of 100% means you solved a 3BV 50 board in 50 clicks.

The only way to gain efficiency is to chord. Efficiency is lost by placing flags, wasting clicks, or clicking cells that would be revealed by an opening. By combining NF technique and smart chording you can get more than 100% efficiency.

Here are some examples:

Classic chord. With two clicks you can open 3 cells.
Here, if you apply the pattern 1–2, you can open 4 cells.
If you think several moves ahead, one chord can open 5 or more cells.

A good way to learn is to watch best efficiency arena gameplay:

TWPTTACGfans투기장효율 L8
CNPTY투기장효율 L7
CNpauv투기장효율 L6
KR졸린곰투기장효율 L5
CNPTY투기장효율 L4
JPchc투기장효율 L3
ITBaldi99투기장효율 L2
ILtrckui11투기장효율 L1

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