Checker Cruncher
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Settings
Board and pieces
Board Size
Normal: Extra space for comments and shorter displays.
Large: Maximize board size on taller displays.
Board Set
Old
Original
Vinyl
Wood
Marble
Piece Set
Old
Original
Plastic
Wood
Metal
Show numbered coordinates on the board squares. (Recommended)
Show chess style coordinates around the board's border.
Show a perspective effect to make the board look 3d.
Sound
Volume(0-100)
Auto-playback speed.
Delay per move(ms)
Difficulty (Only effective if you've signed in.)
Puzzles
Quick: Problems will be easy but not trivial. You'll get roughly 5/6 correct.
Easy: Problems will be below your rating. You'll get roughly 3/4 correct.
Normal: Most problems will be slightly below your rating. You'll get roughly 2/3 correct.
Hard: Problems will be about your rating. You'll get roughly 1/2 correct.
Tough: Most problem will be slightly above your rating. You'll get roughly 1/3 correct.
Brutal: Problems will be above your rating. You'll get roughly 1/4 correct.
Play from the top to practice seeing your opponent's threats.
Play from the bottom to practice seeing your opportunities.
Color modes.
Use green and red to show success and failure. (Default)
Use blue and yellow to show success and failure.
Board drag and drop interface:
Enable quick move for pieces and squares with only one legal move.
Auto-detect and use the touch screen.
Force the board to use mouse events (useful on laptops with touch screens).
Set Preview
Checker Cruncher uses javascript to create most of the GUI. Without javascript it will have only very limited functionality. We also use browser cookies to manage user sign in and preferences.