I could not find the difference if I want to began at the base line with MatrixFeld[0,0]

```
[202020202
020202020
002020200
000202000
000020000]
```

It gives me an error if j = 0 but not if began at j = 1

For me there is no difference.

WHO could give me help.

Thank you.

Christoph

```
import numpy as np
def main():
spielFeld = int(
input('Länge des Spielfelde')
)
nullFeld = 0
freiesFeld = 1
belegtesFeld = 2
maxx=spielFeld
maxy= spielFeld // 2 + 1
Feld = np
Feld.shape = (maxy, maxx)
FeldMatrix = np.zeros(Feld.shape)
j = 0
'''for j in range(0, maxy):'''
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
j = 1
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
j = 2
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
j = 3
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
j = 4
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
print(FeldMatrix)
if __name__ == '__main__':
main()
```

]]>I could not find the difference if I want to began at the base line with MatrixFeld[0,0]

```
[202020202
020202020
002020200
000202000
000020000]
```

It gives me an error if j = 0 but not if began at j = 1

For me there is no difference.

WHO could give me help.

Thank you.

Christoph

```
import numpy as np
def main():
spielFeld = int(
input('Länge des Spielfelde')
)
nullFeld = 0
freiesFeld = 1
belegtesFeld = 2
maxx=spielFeld
maxy= spielFeld // 2 + 1
Feld = np
Feld.shape = (maxy, maxx)
FeldMatrix = np.zeros(Feld.shape)
j = 0
'''for j in range(0, maxy):'''
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
j = 1
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
j = 2
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
j = 3
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
j = 4
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
print(FeldMatrix)
if __name__ == '__main__':
main()
```

]]>```
for i in range(j, maxx-j, 2):
FeldMatrix [j,i] = freiesFeld
FeldMatrix [j,i+1] = nullFeld
```

]]>