I play some blitz and rapid games on lichess, while doing commentary. 0:00 - French defense, exchange variation as black 16:21 - Orangutan opening as black (aka Sokolsky or Polish opening)
30:04 Nf5: that must be a blunder i guess. When you pin a piece but the piece can be taken once (by their queen) and you have to take back with the piece that is maintaining the pin, you are unpinning.. hence you just loose a knight. Said in another way, your piece is attacked 2 times and defended only once. The secound time defence is depended on the pin tactics. But you cant take back once and maintain the pin at the same time. I call that pin depenecy. The defence is dependent on maintaining the pin. This is one of many ways pins can fail when the pinned piece is attacked. Another similar way is with descovery.
