Prophylactic Penny
“I'll stop your plan before you know you have one.”
Played a few? Don't just close the loss.
Review what went wrong, see how you rank vs players at your level, and train the mistakes that keep costing you points — that's how the rating actually moves.
The bots are calibrated to feel like a real human at their rating — they hang pieces and miss tactics the way a player at that level actually does, not a perfect engine with a random blunder.
About Prophylactic Penny
Plays prophylactically, neutralizing threats before they materialize. Hard to attack.
Builds solid positions, avoids risk, and waits for opponents to overreach.
Play Style
defensive Personality
Builds solid positions, avoids risk, and waits for opponents to overreach.
Strength
Rated 1200 Elo — calibrated to play at that level using the Stockfish engine with personality-specific modifiers.
Openings Prophylactic Penny Plays
Practice any of these against Prophylactic Penny— you'll play the opposite side.
How to Beat Prophylactic Penny
- Prophylactic Penny avoids risk and rarely creates threats — take the initiative early and keep pushing.
- Build up a slow positional advantage; defensive bots will not punish patient maneuvering.
- Open the position once you have more active pieces — passive bots struggle when lines open.
- Do not be afraid to commit pieces forward. Defensive play only works if the attacker overextends.
