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This time, I'll bring you the strategy of 100 doors (46-49).

First, we click the yellow arrows in different directions in order. First, we click the yellow arrow to the left on the right side of the "ST" sign, and then click the cross arrow in the lower left corner. Then we find that there is an up arrow in the lower right corner. Just click it. Then we click the down arrow above the gate. Finally, we click the arrow to the left inside the gate. After that, the door will be opened Green arrow, and then click the green arrow to enter the next level.

After entering, it is a mechanism similar to chess. Click push to see the chess moving. We need to find out the wrong way to go in these chess, and then click on it. In fact, this is just like a mathematical coordinate diagram. Just know how many horizontal and vertical are. We need to click A1

c8 d2 e7 f1。 After clicking, the back door will open, and then you click the green button to enter the next level.

After entering, you will find a sign composed of numbers and English on the floor. There are four numbers and two pairs of different images on the door. There is an addition formula on the top of the door and two addition formulas on both sides of the door. The same thing is that there is no second addition. The four numbers in the middle of the door can be changed by clicking. You can guess that 815 + 20 = 904 means adding 20 days after August 15 After filling in the corresponding number, the door will open, and then click green to enter the next level.

After entering, there are three different pictures on both sides of the door. On the top of the door, there is a group of numbers 753486. On the floor, there is a hint that smiling face is 4, which means that 4 strokes form this figure. Then the 753486 on the top of the door correspond to the figures on both sides of the door, which need several strokes. The correct click order should be left middle, right middle, left top, right bottom, right top, left bottom. Just click the picture in this order, the door will open, and then click the green button to enter the next close.