This site has two parts.  The first is a book that teaches chess tactics; you can read it by clicking anyplace in the table of contents below. The headings can be expanded one at a time by clicking on the [+] plus signs; or click here to expand all of them at once. The second part allows you to quiz yourself on positions from the book.  Click the "Chess Quizzer" box to the lower left of this screen to try it. You can always come back here by clicking the "contents" button in the upper right corner of every page. If you came here by a different route, the easiest link to use to return later is

Hard copies of this site are now available: over 700 pages in total, with more than 1,000 illustrations and commentaries. Here are links to volume one and volume two. You can read a review here and a follow-up to it here (scroll down a bit upon arrival).

1. Introductory Matters.
[+] 1.1. A Short Guide to the Site.
[+] 1.2. Rationale for the Project.
[+] 1.3. The Elements of Tactics: A Primer.
[+] 1.4. Notation; Jargon; the Look of the Site; Hard Copies.
[+] 1.5. Acknowledgments and Bibliography.
[+] 1.6. Chess in Literature.
2. The Double Attack.
[+] 2.1. The Knight Fork.
[+] 2.2. The Queen Fork.
[+] 2.3. The Bishop Fork.
[+] 2.4. The Rook Fork.
[+] 2.5. The Pawn Fork.
3. The Discovered Attack.
[+] 3.1. Bishop Discoveries.
[+] 3.2. Rook Discoveries.
[+] 3.3. Knight Discoveries.
[+] 3.4. Pawn Discoveries.
4. The Pin and the Skewer.
[+] 4.1. Arranging a Pin.
[+] 4.2. Exploiting a Pin.
[+] 4.3. Other Patterns and Applications.
[+] 4.4. The Relative Pin.
[+] 4.5. The Skewer.
5. Removing the Guard.
[+] 5.1. Capturing the Guard.
[+] 5.2. Distracting the Guard (The Overworked Piece).
[+] 5.3. Attacking the Guard.
[+] 5.4. Blocking the Guard (Interference).
6. Mating Patterns.
[+] 6.1. The Back Rank Mate.
[+] 6.2. Other Classic Mating Ideas.