Play free online chess against yourself or challenge AI opponents across basic, intermediate and advanced difficulty levels. Chess clocks, move history, and strategy guides.
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I built Grandmaster Chess Online because most free chess sites either force sign-up before you can play, or the "AI opponent" is either too easy or basically unbeatable with no middle ground.
So this has:
3 real AI difficulty tiers (minimax + alpha-beta pruning under the hood, not just randomized moves)
Play instantly, no account needed
Optional free account (Supabase-backed) if you want your rating/history saved across devices
Local pass-and-play mode too, if you're teaching someone chess on the same screen
Would love feedback — especially on the Advanced AI difficulty. Is it too hard? Too easy? Let me know what you'd want next (openings trainer? puzzles? dark mode themes?).