Thank you very much. The truth is, I am not a programmer or a web developer. I am 60 years old, I really enjoy board games, and my older son (40), who programs in Java, introduced me to this game. I am always excited when I see someone come up with a simple game that does not require a lot of materials or money. I have to give credit to Mark S. Ball here. I've already done one project for myself with the help of free chatGPT, so it helped me a lot here too. But it's not easy to express in text what I actually want and how it should look and work. So from that point of view, it was three weeks of quite demanding work and arguing with AI. The initial versions were graphically simple with a 4 x 4 square grid and numbers inside. My son pointed me to images in BASE64, so I moved a little further. AI is a great thing in this regard, but you still have to learn how to use it. JavaScript has its limitations, but my goal was to create something for myself that I could play on my phone alone or with my girlfriend anywhere, regardless of whether I was connected to the internet or not.