Learn strategies for the Defense with theoretical analysis and practical examples. Study 130 positions and 330 exercises to improve understanding of key variations. Practice moves and analyze for both white and black pieces.
Practice Japanese kanji with writing and reading exercises. Access 10,546 questions across six levels. Test knowledge with 5-question sets and 10-question exams. View detailed kanji information including radicals and compounds.
Place countries, territories, and landmarks on a 3D globe. View capital cities and major landmarks. Explore high-resolution maps with translucent oceans. Learn about geography through interactive placement and detailed locations.
