Risky Rook Sacrifice- Thayer Coll thayercoll Updated: Mar 15, 2018, 6:01 PM | 0 Risky Rook Sacrifice- Thayer Coll Game My win would not have been possible without my early and risky rook for pawn sacrifice to weaken my opponents' king protection. (In this match, I played as black) Thayer Coll