Barnes Opening Walkerling Puzzle (Rated 982): Crush with a Fork — Decisive Material Gain
This middlegame puzzle shows a classic crushing fork idea: one active knight creates a forcing check while also attacking a key rook and loose pieces. The position is rich in tactical themes like hanging pieces, trapped piece ideas, and king safety pressure. White’s king is still in the center, so Black can use forcing moves to keep the initiative and convert activity into material. The lesson is to look for checks that also win something valuable.