Product Description

1 There are 5*5 5*6 5*7 6*6 6*7 6*8 7*7 7*8 8*8 totally 9 levels of difficulty 2 There are **0 puzzles in each level 3 Assisted indicate function (2 seconds to show the right answer in the relative blank cell) 4 LCD gray regulation 5 LCD backlight and LCD display switch at the same time 6 Auto power off and auto store 7 Auto check function 8 Store 9 rounds of the game (can regulate to play again )