说明About
每日谜题Daily puzzle
每天零点（北京时间）换一道新题。题目选自 Lichess 公开谜题库（CC0 授权，来自真实对局），只选被大量棋手做过、评分稳定的题。难度按星期递增：周一约 1200 分，周二 1400，一直到周日约 2400 分。
对手刚走的一步会高亮显示，然后轮到你。每一步你都要找到最佳着法；走对了，对手会自动应着，直到谜题结束。最后一步如果有别的将杀走法，也算对。每道题都用 Stockfish 重新核对过：解答里的每一步都必须是引擎的首选。
当天的答案不写在网页里（网页只存着法的加密校验值），第二天连同引擎分析一起公布。
A new puzzle goes live every day at midnight (China time). Puzzles come from the Lichess puzzle database (CC0, taken from real games), limited to well-tested puzzles with stable ratings. Difficulty rises through the week: about 1200 on Monday, 1400 on Tuesday, up to about 2400 on Sunday.
Your opponent's last move is highlighted, then it's your turn. Find the best move at every step; when you're right, the opponent replies automatically until the puzzle ends. On the final move, any other checkmate also counts. Every puzzle is re-checked with Stockfish: each move of the solution must be the engine's first choice.
Today's answer isn't in the page source (the page only stores encrypted checks of the moves). It's revealed the next day, together with the engine analysis.
历史名局 · 妙着Famous moves
棋史上那些“神之一手”：安德森的不朽之局、少年费舍尔的“世纪之局”、马歇尔的“金币之局”、卡斯帕罗夫的 24.Rxd4!!……每一局都停在那步名着之前，先让你自己找。
找到（或放弃）之后，会显示：AI 撰写的解读（这步棋的意图、为什么其他着法不行、它妙在哪里），Stockfish 的客观评估（有时名着在引擎眼里并不完美，这本身就很有意思），以及当年棋手和评论家的原话。每条原话都附出处链接，并且由程序抓取原网页逐字核对，找不到原文的引语一律不显示。
The "god-like" moves of chess history: Anderssen's Immortal Game, young Fischer's Game of the Century, Marshall's Gold Coins game, Kasparov's 24.Rxd4!! and more. Each game stops just before the famous move so you can look for it yourself first.
Once you find it (or give up), you get: an AI-written analysis (the idea behind the move, why the alternatives fail, what makes it brilliant), Stockfish's objective verdict (sometimes the famous move isn't perfect to an engine, which is interesting in itself), and what players and annotators said at the time. Every quote links to its source, and a program fetches that page to check the wording; any quote that can't be found there is not shown.
记号Notation
着法用标准代数记谱法（SAN）：K 王、Q 后、R 车、B 象、N 马，兵不写字母；x 吃子，+ 将军，# 将杀，O-O 短易位。引擎评分以白方视角：+1.00 约等于白方多一个兵，#3 表示三步杀。
Moves use standard algebraic notation (SAN): K king, Q queen, R rook, B bishop, N knight, no letter for pawns; x captures, + check, # mate, O-O castles short. Engine scores are from White's point of view: +1.00 is roughly a pawn up for White, #3 means mate in three.