Hello folks, I am trying since yesterday to make a game of life implemenation work. It looks all ok so far but in can`t figure out the final steps. I think I get the logic I have to use and if I imagine the code in C++ for example it would be pretty much straight forward. But with pharo I got trouble telling the machine what I want. In short I`m trying to make this method work: I wrote a test wich looks like this: I want to go trough each element of the matrix(cells), check its surounding cells if they are alive, and set its counter if there are any living neighbours. It should move like this through the whole matrix to set the neighbour counter for each element. In this method i just tried the implement the topLeft check yet but I think you get the idea. You can look at the comment in the top section it shows where the neighbour indexes are. I tried so many things by now, did research read methods of the superclasses but I can`t make it work. I woud be really glad if someone gave me a little hint. What is wrong here? -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html