Play alone, explore positions, and train board vision with all the indicators.
🤖
Play vs Bots
Challenge Stockfish or a human-like Maia-2 bot. Mix engines, set time pressure, see ghost responses.
⚔️
2-Player Online
Create a room and share the code with a friend. Play in real time.
📂
Load a Saved Game
Upload a PGN file and replay or explore any game move by move.
Have a saved config?
♟ BlundermindStop getting blundermined.
Black
—
TIME CONTROL
Move 0 / 0
White
—
▶ your move
💬 CHAT
Piece Explore/commit:
Show legal moves:
👻 Ghost responses (SF depth):
Batteries in threat counts:
Influence on move exploration:
Include queen pins:
Show During Exploration
Show During Exploration
Show During Exploration
Show During Exploration
Show During Exploration
Show During Exploration
Show During Exploration
Show During Exploration
Show During Exploration
Show During Exploration
Show During Exploration
Show During Exploration
Show During Exploration
Promote pawn to:
About & Feedback
As a newby, nearly all of the games I play are decided on blundered pieces. I created this site in the hopes that I could see what it was like to play a game that was decided by strategy instead of blunders. I still blunder, but at least the number of blunders is reduced a bit when there is a big red circle around the queen when I hover it over my intended square.
I also struggle with seeing or “getting a grip on the board” (to steal a useful phrase from the Chess Dojo), so while my intent was to blundercheck moves before committing, I’m finding that it also serves as a first order “get a grip” check to see if there are any check threats, discovered attacks, etc., that I overlooked.
While I added a feature to show the two most likely opponent responses to a move (to test my ability to predict the likely response), the site purposefully does not include any engine analysis or indicators to show if a move is “good or bad.” Each game can be downloaded and analyzed in Lichess or a website of your choice. Similarly, the PGN of any game can be uploaded and explored here.
While I most enjoy playing people in person, I find playing strangers online less enjoyable, so I added in the feature to play against bots. The problem with the bots I’ve found is that they don’t feel time pressure, and their behavior is often sporadic in an unsatisfying way. I’ve tried to make the bots customizable in a way so that I have more control over how the bot will play.
Privacy
Blundermind collects no user data, stores no game history, and tracks nothing. This may be annoying, so there is an option to download the current settings (board & visualization settings and/or bot settings) and upload them when returning.
Feedback
Any problems with functionality would be helpful, but I would particularly love feedback on whether any features on this site seem to translate into improvement in ‘real’ over-the-board play.
