#989534 - safe, artist:corsairsedge, pinkie pie, rarity, twilight sparkle, alicorn, earth pony, pony, unicorn, g4, mmmystery on the friendship express, rarity investigates, absurd resolution, bubble pipe, deerstalker, detective, female, hat, magnifying glass, mare, pipe, sherlock holmes, sherlock pie, twilight sparkle (alicorn)

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[img]https://derpicdn.net/img/2015/9/27/989534/medium.png[/img] [url=https://derpibooru.org/images/989534]View on Derpibooru[/url] - [url=http://corsairsedge.deviantart.com/art/The-Problem-Solvers-562762768]Original source[/url]