遊び方
このサイトでのプレイ
- 「対局を作成」を開き、ニックネームを入力し、持時間（と色）を選択。
- 任意でルームパスワードを設定するか、「誰でも参加可」にチェックして公開リストに掲載。
- ロビーから招待リンクをコピーして友達に送る（観戦リンクも共有可能）。
- 両プレイヤーが着席したら、駒をドラッグして指す — モバイルではタップでも。
- サイドパネルから投了または引き分けを提案。時計はサーバーで動作。
Ways to play
Private invite: create a room and share the link only with your friend. Open Games: list a public table so anyone can sit down. Play Bot: start instantly against Easy, Medium, or Hard computer opponents with the same clocks and board. Spectators join via a separate watch link so watching never takes a player seat.
チェスルール
標準FIDEチェスルールが適用：チェックメイトで勝利、ステイルメイトで引き分け、キャスリング、アンパッサン、ポーン昇格に対応。
A move is legal only if it does not leave your own king in check. When your king is attacked, you must escape check. Clocks count down only on your turn; if your time reaches zero, you lose on time (unless the position is already a draw by rule).
Fair play on OnlineChessLive
Every move is validated on the server with chess.js. Remaining time is owned by the server, not the browser, so clients cannot cheat the clock. If you disconnect, your clock can pause within a limited grace budget; after that budget is used up, time keeps running. Reconnecting with your session token restores your seat when possible.
Tips for a smooth game
- Use a room password whenever the invite link might leak beyond your intended opponent.
- Share the spectator link separately if friends want to watch without joining as a player.
- Pick a time control both players can finish — blitz for quick games, longer bases for thoughtful play.
- If you refresh mid-game, wait for reconnection; do not open the same seat in multiple tabs.