I almost won when I was playing a game of Triominos with my mom. But I forgot to put one playpiece on the table because I didn't notice one available option to play one of my pieces, so I had to pick up an extra piece out of the bag. Then my mom laid out a series of three pieces in the spam of three turns, and she won. Then I realized I took a playpiece from the bag and it turned out to be very easy to connect it to the pieces that were already on the table! But by then it was already too late. Not that it mattered though -- it was lots of fun playing!