Chess course for club and intermediate players covers theory and key variations. Includes 28 examples, 261 exercises, and analysis of sharp positions. Teaches tactical patterns and decision-making in critical game phases.
Graphmatica allows users to plot Cartesian, polar, parametric, and differential equations. It supports data plotting and curve-fitting. Users can graph up to 999 equations simultaneously.
Explore the human body by building organ , including male and female anatomy. Create different cell types and assemble the skeleton. Learn about animal and plant anatomy. Play against others or in class. Track progress and climb leaderboards.
Play 1-on-1 matches with friends locally or online, or join random games against global players. Custom teams of pieces can be controlled and moved across a board. Win by capturing opponent's pieces or blocking movement.