New ABC Solitaire IQ

You are to remove identical letters as quickly as possible. 

1. You can remove two identical letters if they are located on a same line. 
2. You can also move to align one letter with another identical letter firstly, and then remove them.

Feature:
You can view the Demo game to learn how to play the game.
You can view hints or even undo a step within the game.

This game is extremely challenging yet also huge addictive. It requires your great observation and patience. 

Please enjoy the game!

Looking forward to having your reviews! Thank you!