Number Maze FREEBIE | Made By Teachers - Free Printable

To solve this Number Maze, we need to find a continuous path of the number 1 that connects the anteater at the top left to the ants at the bottom right. We can only move up, down, left, or right to adjacent squares (no diagonal moves).

Here is the step-by-step path:

1. Start: Begin at the anteater in the top-left corner. The first square is a 1 (Row 1, Column 1).
2. Move Right to the next 1 (Row 1, Column 2).
3. Move Right again to the next 1 (Row 1, Column 3).
4. Move Down to the 1 below it (Row 2, Column 3).
5. Move Down to the 1 below that (Row 3, Column 5). *Note: You have to skip over the 3 and 1 in between by following the connected ones.* Let's trace carefully from Row 2, Col 3.
* From Row 2, Col 3 (1), look around.
* Down is Row 3, Col 3 which is a 9. That's a dead end.
* Left is Row 2, Col 2 which is a 6. Dead end.
* Right is Row 2, Col 4 which is a 9. Dead end.
* Wait, let's re-examine Row 3. Row 3 is: `5 4 9 3 1 1 1 1 6 10`.
* Let's look at Row 2 again: `2 6 1 9 7 3 7 4`.
* Ah, I see a connection I missed. Let's restart the trace more carefully.

Correct Path Tracing:

1. Start at the Anteater: Row 1, Column 1 is 1.
2. Move Right to Row 1, Column 2: 1.
3. Move Right to Row 1, Column 3: 1.
4. Move Down to Row 2, Column 3: 1.
5. From here, we are stuck if we just go down. Let's look for another route from the start.
* Maybe the path goes down earlier?
* Row 1, Col 1 (1) -> Down to Row 2, Col 1 is 2. No.
* So we must go Right along the top row to Col 3.

Let's look at the cluster of 1s in the middle.
Row 3 has four 1s in a row: Columns 5, 6, 7, 8.
How do we get there?
* Row 2, Col 3 is a 1. Is it connected to Row 3? No, Row 3, Col 3 is 9.
* Let's check Row 4: `2 3 7 6 2 10 9 1 8 9`. There is a 1 at Row 4, Col 8.
* Let's check Row 5: `8 7 8 4 3 8 7 1 3 6`. There is a 1 at Row 5, Col 8.
* Let's check Row 6: `4 2 1 1 1 1 1 1 4 3`. There is a long line of 1s from Col 3 to Col 8.

Let's work backward from the Ants at the bottom right.
The ants are near Row 9 and 10.
* Row 10 (bottom row): `9 9 1 1 1 1 1 1`. The last six numbers are 1s.
* Row 9: `3 7 1 8 2 4 7 5`. There is a 1 at Row 9, Col 3.
* Row 8: `5 8 1 3 6 5 3 2 9 5`. There is a 1 at Row 8, Col 3.
* Row 7: `4 2 1 1 1 1 1 1 4 3`. There is a 1 at Row 7, Col 3.

Okay, let's try to connect the top to this bottom-left/center area.

Path Attempt 2:
1. Start at R1C1 (1).
2. Right to R1C2 (1).
3. Right to R1C3 (1).
4. Down to R2C3 (1).
5. Now, where can we go from R2C3?
* Up: Back to start.
* Left: R2C2 is 6.
* Right: R2C4 is 9.
* Down: R3C3 is 9.
* This seems like a dead end. Did I misread the grid?
* Let's re-read Row 2: `2 6 1 9 7 3 7 4`.
* Let's re-read Row 3: `5 4 9 3 1 1 1 1 6 10`.

Is there a connection from R1C3 to somewhere else?
R1C3 is 1. Below it is R2C3 (1).
Is there a 1 at R2C4? No, it's 9.
Is there a 1 at R1C4? No, it's 4.

Let's look really closely at the image again.
Row 1: `1 1 1 4 3 2 8 6`
Row 2: `2 6 1 9 7 3 7 4`

Wait, look at Row 3, Column 4. It is a 3.
Look at Row 3, Column 5. It is a 1.

How do we get to Row 3, Column 5?
Maybe the path doesn't start at R1C1? No, the anteater is pointing to R1C1/R2C1 area. The arrow from the anteater points specifically to the box with 2 in Row 2, Column 1? No, the anteater is sitting on top of the grid. Its snout is pointing towards the first column. Usually, these mazes start at the very first cell. Let's assume the start is R1C1.

Let's look for any other 1s in the top left area.
R3C5 is a 1.
R4C8 is a 1.
R5C8 is a 1.
R6C3 through R6C8 are 1s.

Is it possible I missed a diagonal rule? "Follow and color the number 1". Standard mazes are orthogonal.

Let's look at R2C3 (1) again.
Is it possible the number below it is a 1? R3C3 is clearly a 9.
Is it possible the number to the right is a 1? R2C4 is clearly a 9.

Let's look at R1C3 (1).
Is there a path going RIGHT from R1C3? R1C4 is 4. No.

Let's look at the entire grid for isolated 1s vs connected 1s.

Maybe the start is NOT R1C1?
The anteater is drawn to the left of Row 2. The snout is touching the box with 2 (R2C1) and 5 (R3C1)? No, it's above Row 2.
Actually, looking at the drawing, the anteater's nose is pointing directly at the 2 in Row 2, Column 1. But the instructions say "help the anteater reach the ants... follow number 1". The anteater isn't a 1. The first 1 it encounters must be the start.

The closest 1 to the anteater is R1C1, R1C2, R1C3, or R2C3.

Let's re-examine R2C3.
If R2C3 is a dead end, then R1C1-C3 is a dead end.

Let's look further down.
Row 6 has a huge bridge of 1s: `4 2 1 1 1 1 1 1 4 3`. Indices 3,4,5,6,7,8 are 1s.
Row 7: `4 2 1 1 1 1 1 1 4 3`. Indices 3,4,5,6,7,8 are 1s.
Row 8: `5 8 1 ...` Index 3 is 1.
Row 9: `3 7 1 ...` Index 3 is 1.
Row 10: `9 9 1 1 1 1 1 1`. Indices 3-8 are 1s.

So there is a clear path from the bottom-left-center all the way to the finish.
The finish is the ants at the bottom right. They are next to Row 9/10. The path ends at R10C8 or R9C8? The ants are outside the grid, to the right of the bottom rows. The exit point is likely the right-most 1 in the bottom rows.
R10C8 is a 1. R9C8 is a 5. So the exit is likely via R10C8 or R8C8?
R8C8 is 2.
R7C8 is 1.
R6C8 is 1.

So the path definitely goes through the block of 1s in Rows 6 and 7, columns 3-8.

Now, how do we get FROM THE TOP to Row 6, Column 3?

Let's look at Column 3 vertically.
R1C3: 1
R2C3: 1
R3C3: 9 (Block)
R4C3: 7 (Block)
R5C3: 8 (Block)
R6C3: 1

There is a vertical break between R2 and R6 in Column 3.

Let's look at Column 4 vertically.
R1C4: 4
R2C4: 9
R3C4: 3
R4C4: 6
R5C4: 4
R6C4: 1

Let's look at Column 5 vertically.
R1C5: 3
R2C5: 7
R3C5: 1
R4C5: 2
R5C5: 3
R6C5: 1

Let's look at Column 6 vertically.
R1C6: 2
R2C6: 3
R3C6: 1
R4C6: 10
R5C6: 8
R6C6: 1

Let's look at Column 7 vertically.
R1C7: 8
R2C7: 7
R3C7: 1
R4C7: 9
R5C7: 7
R6C7: 1

Let's look at Column 8 vertically.
R1C8: 6
R2C8: 4
R3C8: 1
R4C8: 1 <-- Aha!
R5C8: 1 <-- Aha!
R6C8: 1

Okay, we have a vertical connection in Column 8!
R3C8 is 1.
R4C8 is 1.
R5C8 is 1.
R6C8 is 1.

So, if we can get to R3C8, we can go down to the finish.

Now, how do we get from the Start (Top Left) to R3C8?

Row 3 is: `5 4 9 3 1 1 1 1 6 10`
The 1s in Row 3 are at Columns 5, 6, 7, 8.
They are all connected horizontally.
So if we can get to R3C5, we can slide right to R3C8.

How do we get to R3C5?
Let's look at the neighbors of R3C5 (which is a 1).
Up: R2C5 is 7.
Down: R4C5 is 2.
Left: R3C4 is 3.
Right: R3C6 is 1.

This implies R3C5 is only connected to R3C6. It's an island unless I missed a neighbor.
Wait, look at Row 2 again.
`2 6 1 9 7 3 7 4`
Look at Row 1 again.
`1 1 1 4 3 2 8 6`

Is there a path from R1/R2 into the R3 1-cluster?
R3C5 (1) is surrounded by 7, 2, 3, 1.
R3C6 (1) is surrounded by 3 (up), 10 (down), 1 (left), 1 (right).
R3C7 (1) is surrounded by 7 (up), 9 (down), 1 (left), 1 (right).
R3C8 (1) is surrounded by 4 (up), 1 (down), 1 (left), 6 (right).

It seems the entire block of 1s in Row 3 (Cols 5-8) is ISOLATED from the top rows because the cells above them in Row 2 are not 1s.
R2C5=7, R2C6=3, R2C7=7, R2C8=4.

This means my previous assumption that the path starts at R1C1 might be wrong, OR I am misinterpreting the grid numbers.

Let's re-read the numbers in the image very carefully.

Row 1: 1, 1, 1, 4, 3, 2, 8, 6
Row 2: 2, 6, 1, 9, 7, 3, 7, 4
Row 3: 5, 4, 9, 3, 1, 1, 1, 1, 6, 10
Row 4: 2, 3, 7, 6, 2, 10, 9, 1, 8, 9
Row 5: 8, 7, 8, 4, 3, 8, 7, 1, 3, 6
Row 6: 4, 2, 1, 1, 1, 1, 1, 1, 4, 3
Row 7: 5, 8, 1, 3, 6, 5, 3, 2, 9, 5 --> WAIT. I misread Row 7 in my head earlier.
Let's check the image for Row 7.
Image Row 7: `5 8 1 3 6 5 3 2 9 5`
My previous transcription for Row 7 was `4 2 1 1 1 1 1 1 4 3`. That was actually Row 6!
Let's re-transcribe EVERY row carefully from the image.

Grid Transcription:

* Row 1: `1 1 1 4 3 2 8 6`
* Row 2: `2 6 1 9 7 3 7 4`
* Row 3: `5 4 9 3 1 1 1 1 6 10` (Wait, the grid is 8 columns wide? Let's count.)
* Row 1 has 8 boxes.
* Row 3 has `5 4 9 3 1 1 1 1` then `6 10`? No, looking at the grid lines:
* Row 3: Box 1:5, Box 2:4, Box 3:9, Box 4:3, Box 5:1, Box 6:1, Box 7:1, Box 8:1. Then there are two more boxes?
* Let's count the columns in Row 1. 1,2,3,4,5,6,7,8. Eight columns.
* Let's count the columns in Row 3. 5,4,9,3,1,1,1,1,6,10. That's 10 items.
* Let's look at the grid structure.
* Row 1: 8 boxes.
* Row 2: 8 boxes.
* Row 3: The box with '5' aligns with '2' above? No.
* Let's look at the vertical alignment.
* Col 1: 1, 2, 5, 2, 8, 4, 5, 3, 9. (9 rows?)
* Let's count the rows.
* R1: 1 1 1 4 3 2 8 6
* R2: 2 6 1 9 7 3 7 4
* R3: 5 4 9 3 1 1 1 1 6 10 ?? This row looks wider.

Actually, looking at the full image, the grid is 10 columns wide and 10 rows high.
Let's re-read Row 1.
`1 1 1 4 3 2 8 6` ... wait, there are empty spaces? No.
Let's look at the very top right. `8 6`.
Let's look at Row 3 right side. `6 10`.

Let's assume the grid is 10x10.

Row 1: `1 1 1 4 3 2 8 6 [blank?] [blank?]` -> No, the border ends after 8.
Let's look at Row 3 again. `5 4 9 3 1 1 1 1 6 10`. This row clearly has 10 numbers.
Let's look at Row 1 again. `1 1 1 4 3 2 8 6`. It stops.

Ah, I see. The grid is irregular or I am misaligning.
Let's look at the vertical lines.
The vertical lines go all the way down.
Row 1 has 8 visible numbers.
Row 3 has 10 visible numbers.

Let's look at the image again, zooming in on the top right.
Row 1: `1 1 1 4 3 2 8 6`
Row 2: `2 6 1 9 7 3 7 4`
Row 3: `5 4 9 3 1 1 1 1 6 10`

Wait, look at the alignment of the '6' in Row 1 and the '4' in Row 2.
Under the '6' in Row 1 is the '4' in Row 2.
Under the '4' in Row 2 is the '1' (second to last) in Row 3?

Let's count the boxes in Row 3.
1(5), 2(4), 3(9), 4(3), 5(1), 6(1), 7(1), 8(1), 9(6), 10(10).

Let's count the boxes in Row 1.
1(1), 2(1), 3(1), 4(4), 5(3), 6(2), 7(8), 8(6).

It seems Rows 1 and 2 only have 8 columns, but Rows 3-10 have 10 columns? That would be a very weird worksheet.

Let's look closer at Row 1 and 2.
Maybe the numbers `8 6` in Row 1 are in columns 9 and 10?
And `7 4` in Row 2 are in columns 9 and 10?

Let's check the spacing.
In Row 3, the `1 1 1 1` block is in the middle.
In Row 1, the `1 1 1` block is on the left.

Let's assume standard 10x10 grid and I'm just missing the first two columns of Row 1 and 2? No, the border starts there.

Let's look at the left edge.
Row 1 starts with 1.
Row 2 starts with 2.
Row 3 starts with 5.
They are aligned.

Let's look at the right edge.
Row 1 ends with 6.
Row 2 ends with 4.
Row 3 ends with 10.

The box with '6' (R1) is above the box with '4' (R2).
The box with '4' (R2) is above the box with '1' (R3, 8th item)? Or the box with '6' (R3, 9th item)?

Visually, the right edge of Row 1 and 2 aligns with the 8th column of Row 3.
This means Rows 1 and 2 are shifted or shorter?
OR, more likely, Rows 1 and 2 have 10 columns too, and I am misreading the image crop or compression.

Let's look at the space between `2` and `8` in Row 1.
`1 1 1 4 3 2 8 6`
Let's look at Row 3: `5 4 9 3 1 1 1 1 6 10`

If I align the left sides:
Col 1: R1=1, R2=2, R3=5.
Col 2: R1=1, R2=6, R3=4.
Col 3: R1=1, R2=1, R3=9.
Col 4: R1=4, R2=9, R3=3.
Col 5: R1=3, R2=7, R3=1.
Col 6: R1=2, R2=3, R3=1.
Col 7: R1=8, R2=7, R3=1.
Col 8: R1=6, R2=4, R3=1.
Col 9: R1=?, R2=?, R3=6.
Col 10: R1=?, R2=?, R3=10.

Looking at the image, there are NO boxes for Col 9 and 10 in Rows 1 and 2. The black border closes off after Col 8 for the first two rows.
HOWEVER, look at Row 4: `2 3 7 6 2 10 9 1 8 9`. (10 items).

This implies the maze effectively "widens" or the start is restricted.
BUT, if R1 and R2 don't have cols 9/10, how do we get to the rest of the grid?
We must exit R2 into R3.

Let's re-evaluate the connection from Top to Bottom based on this 8-wide vs 10-wide structure.

Start Area:
R1C1(1) -> R1C2(1) -> R1C3(1).
From R1C3(1), we can go Down to R2C3(1).
From R2C3(1), where can we go?
- Left: R2C2(6) - No.
- Right: R2C4(9) - No.
- Down: R3C3(9) - No.
- Up: Back.

This path is still a dead end.

Is it possible that R2C4 is a 1?
Image: `2 6 1 9 7 ...` It looks like a 9.
Is it possible that R3C3 is a 1?
Image: `5 4 9 ...` It looks like a 9.

Let's look at R1C4. It is a 4.
Let's look at R1C5. It is a 3.

Is there any other 1 in the top left?
R1C1, R1C2, R1C3, R2C3.

Wait! Look at Row 4.
`2 3 7 6 2 10 9 1 8 9`
There is a 1 at R4C8.

Look at Row 5.
`8 7 8 4 3 8 7 1 3 6`
There is a 1 at R5C8.

Look at Row 6.
`4 2 1 1 1 1 1 1 4 3`
There are 1s at R6C3, R6C4, R6C5, R6C6, R6C7, R6C8.

Look at Row 7.
`5 8 1 3 6 5 3 2 9 5`
There is a 1 at R7C3.

Look at Row 8.
`3 7 1 8 2 4 7 5` -> Wait, Row 8 in my previous transcription was `5 8 1...`. Let's re-read the bottom half.

Let's list the rows from the bottom up to be sure.
Bottom Row (Row 10?): `9 9 1 1 1 1 1 1` (8 items? Or 10?)
Let's count the bottom row boxes.
1(9), 2(9), 3(1), 4(1), 5(1), 6(1), 7(1), 8(1).
It seems the bottom rows also have 8 items?

Let's count Row 9: `3 7 1 8 2 4 7 5`. (8 items).
Row 8: `5 8 1 3 6 5 3 2 9 5`? No, let's look at the image.

Okay, let's look at the grid width consistency.
Row 3 has `6 10` at the end. That's two digits in one box? Or two boxes?
"10" is in one box.
So Row 3 has 10 boxes.

Row 10 (bottom): `9 9 1 1 1 1 1 1`.
Let's count the vertical grid lines.
There are 9 vertical lines dividing the columns? That would make 10 columns.
Let's count the boxes in the bottom row.
Box 1: 9
Box 2: 9
Box 3: 1
Box 4: 1
Box 5: 1
Box 6: 1
Box 7: 1
Box 8: 1
Box 9: ?
Box 10: ?

Actually, looking at the right edge of the bottom rows, they align with the 8th column of the top rows?
No, the right edge of the grid is straight.
Therefore, all rows have the same number of columns.

If Row 3 has 10 columns, then ALL rows have 10 columns.
This means Row 1 and Row 2 MUST have 10 columns.
Where are the missing numbers for R1C9, R1C10, R2C9, R2C10?

Looking at the image again...
Row 1: `1 1 1 4 3 2 8 6`
Row 2: `2 6 1 9 7 3 7 4`

Is it possible that the numbers `8 6` are actually in columns 9 and 10, and columns 7 and 8 are empty/missing?
Or is it possible that `1 1 1` are cols 1-3, `4 3 2` are cols 4-6, `8 6` are cols 7-8... and cols 9-10 are cut off?

Let's look at the ants. They are at the bottom right.
The path must end at the rightmost part of the grid.

Let's assume the grid is 8 columns wide and I miscounted Row 3.
Row 3: `5 4 9 3 1 1 1 1`. Then `6 10` are... what?
Maybe `6` is Col 9 and `10` is Col 10?

Let's look at the vertical alignment of the right side.
The right border of the `4` in R2 aligns with the right border of the second `1` in R3?
R3: `1 1 1 1`. The fourth 1 is at the edge?
If R3 has 10 columns, and R1 has 8, the grid would be jagged. It is not jagged. It is a rectangle.

Conclusion on Grid Size: The grid is 10x10.
Missing Data: The image might be cropping R1C9, R1C10, R2C9, R2C10?
OR, more likely, I am misidentifying the numbers in R1 and R2.

Let's look at R1 again.
`1 1 1 4 3 2 8 6`
Could the `8` be a `1`? No.
Could the `6` be a `1`? No.

Let's look at the solution path from the bottom up, which is usually easier.

End Point: Ants are at the bottom right.
The exit is likely R10C8 or R10C10.
Let's trace back from the bottom right corner.

Row 10: `9 9 1 1 1 1 1 1` ... if it's 10 wide, what are the last two?
Let's assume the visible numbers are the whole row for a moment (8 wide).
If 8 wide:
R10: `9 9 1 1 1 1 1 1`
R9: `3 7 1 8 2 4 7 5`
R8: `5 8 1 3 6 5 3 2` ... wait, the image shows `9 5` at the end of the row above the bottom one?

Let's read the rows from the bottom of the image upwards carefully.

Bottom Row (let's call it R10):
Boxes: `9`, `9`, `1`, `1`, `1`, `1`, `1`, `1`.
(There seem to be only 8 boxes in this row visually compared to the top? No, the boxes are just narrower? No.)

Let's count the boxes in the row with the ants (Row 9/10 area).
Row above bottom: `3 7 1 8 2 4 7 5` (8 boxes).
Bottom row: `9 9 1 1 1 1 1 1` (8 boxes).

Now let's look at the row with `5 8 1 ...`
`5 8 1 3 6 5 3 2 9 5` -> This row has 10 boxes.

This is extremely confusing. Let's look at the vertical lines.
The vertical lines in the bottom half (Rows 8-10) do NOT align with the top half?
Yes, they do.

Okay, I will bet on the grid being 10x10 and the first two rows having numbers that I am misreading or are hidden.

However, there is a simpler explanation.
Look at Row 3: `5 4 9 3 1 1 1 1 6 10`.
Look at Row 4: `2 3 7 6 2 10 9 1 8 9`.

Let's trace from R4C8 (1).
Up: R3C8 is 1.
Down: R5C8 is 1.

So we have a vertical shaft of 1s at Column 8, from Row 3 to Row 6.
R3C8(1) -> R4C8(1) -> R5C8(1) -> R6C8(1).

From R6C8(1), we can go Left along Row 6.
Row 6: `4 2 1 1 1 1 1 1 4 3`.
So R6C7(1), R6C6(1), R6C5(1), R6C4(1), R6C3(1).

From R6C3(1), we can go Down.
Row 7: `5 8 1 3 6 5 3 2 9 5`.
R7C3 is 1.

From R7C3(1), we can go Down.
Row 8: `3 7 1 8 2 4 7 5` ... wait, if Row 8 is 8 wide, where is Col 3?
Let's assume Row 8 is `3 7 1 ...`.
R8C3 is 1.

From R8C3(1), we can go Down.
Row 9: `3 7 1 8 2 4 7 5`.
R9C3 is 1.

From R9C3(1), we can go Down.
Row 10: `9 9 1 1 1 1 1 1`.
R10C3 is 1.

From R10C3(1), we can go Right.
R10C4(1) -> R10C5(1) -> R10C6(1) -> R10C7(1) -> R10C8(1).

This path leads to the bottom right area where the ants are.

So the lower path is confirmed:
Start at R3C8 -> Down to R6C8 -> Left to R6C3 -> Down to R10C3 -> Right to R10C8 (Exit).

Now, how to get to R3C8 from the Start?

We established that R3C8 is connected to R3C7, R3C6, R3C5.
R3C5 is the leftmost 1 in that cluster.
Neighbors of R3C5:
Up: R2C5.
Left: R3C4.

If R2C5 is a 1, we have a path!
Let's look at Row 2 again: `2 6 1 9 7 3 7 4`.
The 5th number is 7.

Is it possible that R2C6 is a 1?
The 6th number is 3.

Is it possible that R2C7 is a 1?
The 7th number is 7.

Is it possible that R2C8 is a 1?
The 8th number is 4.

Is it possible that R1C5, R1C6, R1C7, R1C8 are 1s?
R1: `1 1 1 4 3 2 8 6`. No.

Is there a mistake in my reading of Row 2?
`2 6 1 9 7 3 7 4`

What if the path goes through R4C8 from the left?
R4: `2 3 7 6 2 10 9 1 8 9`.
R4C8 is 1.
Left is R4C7 (9). Up is R3C8 (1). Down is R5C8 (1).

What if the path comes from R5C8 from the left?
R5: `8 7 8 4 3 8 7 1 3 6`.
R5C8 is 1.
Left is R5C7 (7).

What if the path comes from R6C8 from the left?
R6: `4 2 1 1 1 1 1 1 4 3`.
Yes, R6C7 is 1.

So the entry to the "Vertical Shaft at Col 8" is from Row 6.

So we need to get from the Start to R6C3 (since R6C3-C8 are all 1s).

We need a path from Top-Left to R6C3.

Let's look at Column 3 again.
R1C3: 1
R2C3: 1
R3C3: 9
R4C3: 7
R5C3: 8
R6C3: 1

Blocked.

Let's look at Column 4.
R1C4: 4
R2C4: 9
R3C4: 3
R4C4: 6
R5C4: 4
R6C4: 1

Blocked.

Let's look at Column 5.
R1C5: 3
R2C5: 7
R3C5: 1
R4C5: 2
R5C5: 3
R6C5: 1

Blocked.

Is it possible that R3C5 connects to R4C5?
R3C5 is 1. R4C5 is 2. No.

Is it possible that R3C5 connects to R2C5?
R2C5 is 7. No.

Is it possible that R3C5 connects to R3C4?
R3C4 is 3. No.

This implies that the cluster of 1s in Row 3 (Cols 5-8) is completely isolated from the rest of the grid.

If that cluster is isolated, then the path cannot go through R3C8.

But we proved the path goes through R6C8.
And R6C8 connects UP to R5C8, R4C8, R3C8.
If R3C8 is a dead end (because the R3 cluster is isolated from the start), then the path must come from somewhere else into R6C8?
No, R6C8's neighbors are:
Up: R5C8 (1)
Down: R7C8 (2) -> No.
Left: R6C7 (1)
Right: R6C9 (4) -> No.

So the only way INTO R6C8 is from R5C8 or R6C7.
R5C8 comes from R4C8.
R4C8 comes from R3C8.
R3C8 comes from R3C7... which is isolated.

Unless...

Look at R4C8.
Left is R4C7 (9).
Right is R4C9 (8).
Up is R3C8 (1).
Down is R5C8 (1).

Look at R5C8.
Left is R5C7 (7).
Right is R5C9 (3).
Up is R4C8 (1).
Down is R6C8 (1).

Look at R6C8.
Left is R6C7 (1).

So the chain R3C8-R4C8-R5C8-R6C8 is valid.
But R3C8 is a dead end unless it connects to the Start.

Is there a 1 at R2C8?
Row 2: `... 7