Solve puzzles based on from a textbook by Sergey Ivashchenko. Identify critical moves with visual hints and feedback. View the piece to move after incorrect attempts. Track progress through structured lessons.
Stream live and on-demand news, classical music, and TV content. Access Radio and PBS TV schedules. Multitask by listening in the background. Watch and listen to programs anytime, anywhere.
Create flashcards for vocabulary, sentences, and grammar rules. Review content using a spaced repetition system to improve retention. Learn through teacher-created materials in multiple languages.
Solves equations for y, x, and a in y = log_a(x) with graphing. Explains computation of log_e(x) using Taylor series and log_10(x) via digit-by-digit method. Provides proof of log_e as the integral of x inverse.
Create mobile apps and websites without . Describe your idea in natural language, and AI generates the code. Preview, test, and publish apps directly. Integrate with popular platforms and frameworks.
Programming with interactive exercises and real-time feedback. Access bite-sized JavaScript and Python lessons. Track progress with gamified challenges. Practice coding in a simulated environment. Receive instant corrections and explanations.
And PHP programming with code examples and projects. Access advanced topics like testing, security, and database management. Study MySQL, Vue.js, PostgreSQL, and Webpack. Download tutorials and interview questions for offline use.
Solve chess combinations with structured, theme-based puzzles. Filter by difficulty and theme. Track progress and review solutions. Export puzzles for offline practice. Sync with cloud storage for cross-device access.