I analyzed the board and noticed that my three O’s on the bottom row (cols 3, 4, and 5) can potentially be extended via a vertical as well as diagonal connection. In addition, my opponent’s X pieces at (row5, col2) and (row4, col3) hint at a potential diagonal threat if allowed. By playing in column 4 (which falls into row4, col4), I both build my own vertical and diagonal threat and reduce the opponent’s potential to create a three‐in‐a‐row diagonal. This move sets me up with future winning chances while also countering the opponent’s threat. I choose column 4.