Daily Hard Sudoku

The daily hard sudoku is where pure logic meets real challenge. A 9×9 grid with fewer givens than medium, requiring techniques like pointing pairs, claiming pairs, naked pairs, and locked candidates to crack — but still solvable without the most advanced strategies. A fresh puzzle every visit means your daily training never repeats. Most players finish a hard daily in 15 to 30 minutes, which is the sweet spot for a focused logic session that demands real thinking without consuming the whole afternoon. The hard tier is where most regulars settle — challenging enough to feel satisfying, accessible enough that you'll usually finish what you start. Create a free account to track how your hard-tier solve times drop as your technique sharpens.