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SHARYGIN 2016 Problem 18

    Let ABCABC be a triangle with ∠C=90∘\angle C = 90^\circ, and K,LK, L be the midpoints of the minor arcs ACAC and BCBC of its circumcircle. Segment KLKL meets ACAC at point NN. Find angle NICNIC where II is the incenter of ABCABC.

    Official text Sharygin Geometry Olympiad 2016 official paper, page 3. Quoted with source.

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