ECO - CLI tool for studying chess openings

ECO - Encyclopaedia of Chess Openings

This CLI tool lets you practice chess openings by prompting you to enter corresponding moves. The openings are organised based on ECO classification which organises openings in 5 volumes and 100 subdivisions in each volume

Installation

You must have nodejs and npm or yarn installed on your system to proceed.

npm

npm i -g eco-chess

yarn

yarn global add eco-chess

Usage

Run eco command in your terminal window. It will launch the app and will prompt you to go through setup options to start your pracice session.

Selecting groups

By default all groups are selected. Groups are ranges of ECO opening codes that have common starting moves. For example, all openings in B20-B99 group (Sicilian defence) have starting moves 1. e4 c5; A80-A99 (Dutch defence) have starting moves 1. d4 f5, etc.

Selecting levels

2nd setup step lets you select how deep of the tree you want to practice. For example, for B20-B99 (Sicilian defence) group 1st level is the root - 1. e4 c5. 2nd level are all child nodes to it:

• B21 - 1. e4 c5 2. f4
• B22 - 1. e4 c5 2. c3
• B23-B26 - 1. e4 c5 2. Nc3
• B27-B99 - 1. e4 c5 2. Nf3

3rd level, 4th... etc are further expansion on the moves and more specific openings.

Filtering items

3rd setup step lets you filter (select/unselect) individual test items (openings) to be added to the practice test set

Overview of test set and start of practice

After completing setup the program will output a table of all selected levels and items in the test set.

Practicing

The program will promt you with opening ECO code and its' name. If you enter the corresponding moves correctly, it will move on and promt you on the next opening name. If you enter wrong moves, it will output the right moves:

The number in the parenthesis is the level (depth) of the opening in the tree.