Sudoku for Kids - Free Printable

The image shows a Sudoku puzzle designed for kids. This particular Sudoku is smaller than the standard 9x9 grid, consisting of a 4x4 grid divided into four 2x2 subgrids (also called "regions" or "boxes"). The goal is to fill in the empty cells with numbers from 1 to 4 such that:

1. Each row contains all the numbers 1 through 4 exactly once.
2. Each column contains all the numbers 1 through 4 exactly once.
3. Each 2x2 subgrid contains all the numbers 1 through 4 exactly once.

Given Puzzle:

Here is the partially filled 4x4 Sudoku grid from the image:

```
+---+---+---+---+
| 4 | | | |
+---+---+---+---+
| 1 | | | 1 |
+---+---+---+---+
| | 4 | | 3 |
+---+---+---+---+
| 3 | | 3 | 2 |
+---+---+---+---+
```

Step-by-Step Solution:

#### Step 1: Analyze the given numbers
We start by noting the numbers already placed in the grid:
- Row 1: `4` in the first cell.
- Row 2: `1` in the first cell and `1` in the fourth cell.
- Row 3: `4` in the second cell and `3` in the fourth cell.
- Row 4: `3` in the first cell, `3` in the third cell, and `2` in the fourth cell.

#### Step 2: Fill in the missing numbers using logic

##### Row 1:
- The first cell is `4`.
- The second cell cannot be `4` (since it's already in the row).
- The second cell also cannot be `1` (since `1` is in Row 2, Column 1).
- The second cell cannot be `3` (since `3` is in Row 3, Column 4).
- Therefore, the second cell must be `2`.

Now, Row 1 looks like this:
```
+---+---+---+---+
| 4 | 2 | | |
+---+---+---+---+
```

##### Row 2:
- The first cell is `1`.
- The fourth cell is `1`.
- The second cell cannot be `1` (since it's already in the row).
- The second cell also cannot be `4` (since `4` is in Row 1, Column 1).
- The second cell cannot be `3` (since `3` is in Row 3, Column 4).
- Therefore, the second cell must be `2`.

Now, Row 2 looks like this:
```
+---+---+---+---+
| 1 | 2 | | 1 |
+---+---+---+---+
```

##### Row 3:
- The second cell is `4`.
- The fourth cell is `3`.
- The first cell cannot be `4` (since it's already in the row).
- The first cell also cannot be `3` (since it's already in the row).
- The first cell cannot be `1` (since `1` is in Row 2, Column 1).
- Therefore, the first cell must be `2`.

Now, Row 3 looks like this:
```
+---+---+---+---+
| 2 | 4 | | 3 |
+---+---+---+---+
```

##### Row 4:
- The first cell is `3`.
- The third cell is `3`.
- The fourth cell is `2`.
- The second cell cannot be `3` (since it's already in the row).
- The second cell also cannot be `2` (since it's already in the row).
- The second cell cannot be `4` (since `4` is in Row 3, Column 2).
- Therefore, the second cell must be `1`.

Now, Row 4 looks like this:
```
+---+---+---+---+
| 3 | 1 | 3 | 2 |
+---+---+---+---+
```

#### Step 3: Fill in the remaining cells
Now, let's fill in the remaining cells based on the rules:

##### Column 3:
- The third column has `4` in Row 1, `3` in Row 3, and `3` in Row 4.
- The only number left for Row 2, Column 3 is `1`.

Now, the grid looks like this:
```
+---+---+---+---+
| 4 | 2 | | |
+---+---+---+---+
| 1 | 2 | 1 | 1 |
+---+---+---+---+
| 2 | 4 | | 3 |
+---+---+---+---+
| 3 | 1 | 3 | 2 |
+---+---+---+---+
```

##### Row 1:
- The first cell is `4`, the second cell is `2`.
- The third cell cannot be `4`, `2`, or `1` (since `1` is in Row 2, Column 3).
- Therefore, the third cell must be `3`.

Now, Row 1 looks like this:
```
+---+---+---+---+
| 4 | 2 | 3 | |
+---+---+---+---+
```

##### Row 3:
- The first cell is `2`, the second cell is `4`, and the fourth cell is `3`.
- The only number left for Row 3, Column 3 is `1`.

Now, Row 3 looks like this:
```
+---+---+---+---+
| 2 | 4 | 1 | 3 |
+---+---+---+---+
```

##### Row 1:
- The first cell is `4`, the second cell is `2`, the third cell is `3`.
- The only number left for Row 1, Column 4 is `1`.

Now, Row 1 looks like this:
```
+---+---+---+---+
| 4 | 2 | 3 | 1 |
+---+---+---+---+
```

#### Final Grid:
The completed Sudoku grid is:
```
+---+---+---+---+
| 4 | 2 | 3 | 1 |
+---+---+---+---+
| 1 | 2 | 1 | 1 |
+---+---+---+---+
| 2 | 4 | 1 | 3 |
+---+---+---+---+
| 3 | 1 | 3 | 2 |
+---+---+---+---+
```

Final Answer:

\boxed{
\begin{array}{|c|c|c|c|}
\hline
4 & 2 & 3 & 1 \\
\hline
1 & 2 & 1 & 1 \\
\hline
2 & 4 & 1 & 3 \\
\hline
3 & 1 & 3 & 2 \\
\hline
\end{array}
}