chesstempo - Club de ajedrez

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Killer Chess Training membership at ChessTempo

Sharpen Your Skills with Chess Puzzles – Chess Suggest

Chess Tempo

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.