In order to solve *picross* puzzles, you need to know the game rules first. Once you understand the rules, hours of puzzles are waiting for you! Be careful! Playing *hanjie* might become an addiction!

The goal in *hanjie* is to **blacken** the squares of the puzzle in order to reveal an image, a drawing. The numbers on the left side and above the puzzle give you a hint to help you deduce which square has to be blackened.

The numbers on the **left** side of the puzzle indicate how many squares you need to blacken on the matching **line**.

The numbers **above** the puzzle indicate how many squares you need to blacken on the matching **column**.

A **5** in front of a line (that means on the left side of the puzzle) indicates that you have to blacken five squares **one behind the other** on this line.

The sequence **3 2** means that there are **at least** one empty square between three black squares and two black squares sequences.

There are a few tricks to know to help you solve quickly a *picross* puzzle.

For instance if the *picross* puzzle is a 10 by 10 square, a column (or line) that indicates **10** means that all the squares on that column (or line) have to be blackened.

If the first square of a line (or a column) is black and if the first number of this line is **3**, then you can blacken the two following squares because the **3** necessarily matches the three fisrt squares of the line.
This trick also applies to the end of a line or column.

One other trick: if a line (or column) is 10 squares, and if only **7** of those have to be blackened, then you can blacken the four central squares.
In fact, those squares will be blackened whatever is the solution for this line (or column).
This trick works as soon as a line or a column only has one number and if this number is higher than half the squares of the line (or column).

One last trick, a harder one. Stay focused! Let's imagine that a line is 10 squares and that the numbers are **3 4**. We know that there is at least one empty square between the two series.
Let's think to those series as a whole, which makes it **8** squares to blacken: **3** black squares + **1** empty square (hypothesis) + **4** black squares. That means that **2** will remain empty.
The line must start with 0, 1 or 2 empty squares. Also, this line must end with 0, 1 or 2 empty squares. Thus we can blacken the **third**, the **seventh** and the **eighth** squares because whatever is the solution those squares will end black.

Try to imagine the different solutions on the following picture and you will see by yourself!

You can check the squares that will remain empty, this helps you solving the *picross* puzzle.

For instance if a line contains three black squares and that you already have blackened them, you can check all the remaining squares of this linde. In the end they will represent the white parts on the picture.

There might be a moment when you will be stuck and you won't know which case to blacken.
At this moment you can go into the "hypothesis" mode. This mode changes the color of the squares you will temporarily blacken or check and will help you see any mistake.

The "hypothesis" mode allows you to make some progress in the solving of the *picross* puzzle thanks to a hypothesis, but you can also go back and cancel all of the "hypothesis" squares.