Prophylaxis — stopping their plan before it starts
Learn the strategic art of anticipating and preventing your opponent's ideas.
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What is Prophylaxis?
プロフィラキシスは予防に焦点を当てた高度な戦略概念です。「相手は何をしたいのか？」と自問し、そのアイデアが始まる前に止める手を指すことを求められます。カウンタープレイを制限し、相手をゆっくりと絞め殺す技術です。
How It Works — Step by Step
Ask: What Does My Opponent Want?
Prophylaxis starts with a question: what does my opponent want? Here Black is itching to play ...b5 — grabbing queenside space and preparing ...Bb7. White answers with a4!, stopping the plan a move before it exists. Nothing flashy happened, yet Black must already look for a new idea.
Petrosian's Prophylactic Style
Tigran Petrosian, World Champion 1963–69, was the master of prophylaxis. His moves prevented every opponent plan, slowly suffocating the position.
The Prophylactic h3
h3 prevents Bg4, which would pin the knight. A small move that eliminates an entire line of counterplay.
The Prophylactic Squeeze
Every prophylactic move restricts one more option. After 10–15 such moves, the opponent has no constructive plan left. Victory without a single brilliant sacrifice.
Prophylaxis in Your Openings
These openings frequently require prophylactic moves
Famous Prophylaxis Games
ペトロシアン、「鉄のティグラン」はプロフィラキシスの達人。静かな指し手でスパスキーのカウンタープレイを完全に無力化しました。
Tips for Club Players
常に「相手は何をしたいのか？」と自問する。
攻めるだけでなく、相手の攻めを防ぐ。
h3やh6は古典的なプロフィラキシスの習慣。
敵のナイトが強いアウトポストに到達するのを防ぐ。
Frequently Asked Questions
Everything you need to know about Prophylaxis
相手の計画を予測し、脅威が盤面に現れる前にそれを防ぐ手を指す戦略的概念です。
ニムゾヴィッチが概念を普及させ、ペトロシアンとカルポフが芸術の域に高めました。
Find Prophylactic moves in my games
Kingsights scans your games to find where prophylactic thinking could have stopped a threat.
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