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By Andon Rangelov. Author Andon Rangelov. Publisher Andon Rangelov. Fork, pin, and skewer are three main tactics in chess, and we provide 100 exercises in two moves to be practiced. When a defensive piece is stuck in a pin, it can't move without exposing a more valuable defending piece on the opposite side to assault.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.