Ergo Chess: Mate & Tactics

Sharpen the part of chess that wins games: seeing the tactic and finishing the
mate.

ErgoChess (Ergo Chess) is a focused trainer built around a huge, curated puzzle library and a
progression that actually teaches. Start with simple back-rank mates and climb —
each checkmate pattern unlocks the next as you master it — until the full tactics
trainer opens up.

WHAT'S INSIDE

• Checkmate trainer — ~18,000 puzzles from mate-in-1 to mate-in-5, organized by
pattern (back-rank, smothered, and more) so you drill the ideas that recur in
real games.

• Tactics trainer — ~60,000 puzzles across 20 themes (forks, pins, skewers,
discovered attacks, sacrifices…), each with a difficulty band, sourced from the
Lichess puzzle database.

• Play vs the computer — a real Stockfish opponent with adjustable strength, plus
a built-in fallback engine so you can always get a game.

• Famous games — replay and guess the moves of legendary games, with a link to a
video breakdown of each.

• Daily puzzle & streaks — one puzzle a day to keep your streak alive.

• Track everything — a personal dashboard with your tactics rating, accuracy,
solves over time, mates by pattern, and tactics by theme.

• Friends & leaderboards — add friends, compare on a friends-only leaderboard,
and follow each other's activity.

• Favorites — save any puzzle or game to revisit.

Your progress syncs across web and mobile, so you can train on your phone and
pick up right where you left off at ergochess.com.

Free to play. Sign in with Google or email.