ChessDream hosts free online chess games against real opponents across four time controls — 3+0 and 5+3 for blitz, 10+5 and 15+10 for rapid. Games run in the browser with no download, and every finished game can be taken straight into the Stockfish analysis board for a full move-by-move review.
Longer time controls generally teach more, because most mistakes at club level come from not calculating rather than from calculating too slowly. Blitz is useful for opening familiarity and for practising positions you already understand, but if your goal is to improve rather than to pass time, rapid games followed by analysis produce faster progress.
Yes. Online games are free to play, and analyzing them afterwards is free and unlimited as well.
Four: 3+0 and 5+3 for blitz, and 10+5 and 15+10 for rapid. The first number is the starting minutes per player and the second is the seconds added after each move.
Yes. A finished game can be taken into the Stockfish analysis board for a move-by-move review, including move classifications and the engine's preferred alternatives.
No. Games run entirely in the browser, and the engine used for later analysis runs there too via WebAssembly.