⚫ Black
0 / 0 0:00
⏱ Timer
Tap any of your pieces that are threatened. #— ⚙ double‑click or press G
Ready
© 2026 Alex McCullie – Independent Web & App Developer 🇦🇺 Melbourne, Australia
💡 Result
Well done!
(tap to continue)
♟ Welcome to Threat Trainer
Practice identifying threatened pieces under time pressure
👆 Tap any of your pieces that you think are threatened by the opponent.
✅ Press Submit to check your answers. You'll see which were correct, missed, or extra.
💡 Hints show red dots on threatened pieces (toggle on/off).
⏱ Race against the timer – choose 10s, 20s, 1m, or ∞.
🔄 Flip the board to see from opponent's perspective.
1️⃣/2️⃣ 1‑Move = immediate threats • 2‑Move = threats after opponent moves.
🎯 Score = correct marks − incorrect marks. Aim for perfection!
🔍 Jump to Position
Enter position ID (e.g. 15) or index (1‑based)
⚠️ Invalid Position Data
Some positions have invalid FEN or adjacent kings.