Chess Endgame Trainer built for gianrodz

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Why endgames? Your chess.com analysis showed that 45% of your games reach move 70+, and you score only 43.2% in that bucket versus 53%+ in shorter games. That one gap explains most of your rating gap from your 1286 peak. This trainer walks you through the fundamental techniques one position at a time. Click a lesson on the left to start.

Welcome

Pick a lesson from the sidebar to begin. Start with Week 1 if this is your first session.

Notes

Saved

Coach chat

Chat with Claude about this position

Claude can see the current board and lesson, and can explain ideas, suggest moves, or drill you on a theme.

You need an Anthropic API key:

  1. Go to console.anthropic.com/settings/keys
  2. Sign in, click Create Key, give it a name.
  3. Copy the key (starts with sk-ant-).
  4. Paste it below.

Your key is saved in your browser's localStorage only. It is sent directly to Anthropic's API from this page and not stored anywhere else. You pay Anthropic for usage (typically fractions of a cent per message).