Reached 365 days on r/chesstempo! Easy even if you usually leave standard puzzles overnight. No need 2nd account or griefing. Just do blitz on old site (old.chesstempo.com/chess-tactics.html) and standard on new site.
Chess tempo - Train chess tact APK for Android Download
The Hardest Problem on ChessTempo
Online Chess Training - Play chess, Train chess.
Chess Tactics
Chess endgames
Chess Tactics
Chess tempo - Train chess tact APK for Android Download