Mr. Nutz normally plays at a game resolution of 256x224
but using this game genie code it will increase to 320x224
and it will boot directly without having to enter a password:

AWFA-CW22
BBCT-EW5T
AVNT-EW6J
AVNT-EW7W

!!! code found by krocki, all thanks to him !!!

You can also use the .ips patches instead, apply to:

File: Mr. Nutz (Europe).md
  CRC-32: 0786ea0b
     MD5: 00ee0a02b8794b32584ea1aabadd4580
   SHA-1: 318ff3a44554b75260d5b9b9e7b81a3cfd07581a
  