It has all the features that you listed in the Challenge list
which includes Spam detection, Turn detection, and Win Detection
it works as any normal TTT game
It uses a 0 and + display that is connected up by dropper RS latches that then output to a long line which goes to the win detectors,
the win detectors work by having input from ever combination of winning sets like - \ / and |, the input is a simple keypad type design that connects to the RS latches, but in between the connection there is a Turn/Spam Detector that does what it says it does
Overall it took around 7 hours to make and perfect and it works as expected
Just to add, I built this on a laptop with a Trackpad without a right click
it's like every other normal TTT game, but you input it with the 2 Keypads, the keypads correspond with the top display