Let ABC be an acute scalene triangle with circumcircle ω. Let P and Q be interior points of the sides AB and AC, respectively, such that PQ is parallel to BC. Let L be a point on ω such that AL is parallel to BC. The segments BQ and CP intersect at S. The line LS intersects ω at K. Prove that ∠BKP=∠CKQ.Proposed by Ervin Macić, Bosnia and Herzegovina JuniorBalkanshortlist2021geometryAngle Chasing