Mathematics 18,772 rep 8 gold badges33 silver badges78 bronze badges
Operations Research 3,697 rep 2 gold badges10 silver badges45 bronze badges
Puzzling 3,443 rep 8 silver badges40 bronze badges
Area 51 1,054 rep 2 gold badges2 silver badges14 bronze badges
Chess 748 rep 4 silver badges16 bronze badges

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