Achievement: Solve 10 3d problems

Solve 10 3d problems

1100 XP

Solve 10 3d problems.

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IvanIvo 2d, tasuki 3d, TatyMar 7k, Riozaky 1k, Ccrochet 2d, Pook Pick channel 5k, Bibi 3k, Tsummegoo 4k, Violetta 2k, Абдурозик 1d

and 189 others.