OzProblems

Australian Chess Problem Composition

Welcome to OzProblems.com, a site devoted to the chess problem art in Australia! Whether you’re a player who is new to composition chess or an experienced solver looking for challenging problems, we have something for you. Our aim is to promote the enjoyment of chess problems, which are at once interesting puzzles and the most artistic form of chess.

Problem of the Week

551. Valentin Rudenko
Mat 1976, 1st Prize

  • The weekly problem’s solution will appear in the following week, when a new work is quoted.

  • See last week's problem with solution: No.550.

An in-depth introduction to the art of chess composition, examining various problem types and themes.

Prominent Australian problemists write about their involvement in the contemporary problem scene, and present some of their best compositions.

A comprehensive collection of Australian chess problem materials, including e-books, articles, magazines and columns (all free downloads).

A chess problem blog by Peter Wong, covering a range of subjects. The main page provides a topic index.

See latest post below, followed by links to other recent entries.

Use the contact form on the About page to:

  • Comment on a Weekly Problem you have solved.

  • Subscribe to OzProblems updates.

  • Ask about any aspect of chess problems.

Many readers will be familiar with tablebases, software that effectively plays perfect chess in certain endgame positions. If you’re new to the subject, though, refer to my introductory Adventures with endgame tablebases. As discussed in that blog series, the two most comprehensive tablebases currently are the Lomonosov and Syzygy, both of which cover all possible endgames with up to seven pieces. In the years since the releases of these databases, programmers have been building on the eight-piece version, which of course requires tremendous computer resources. One such developer, Marc Bourzutschky, has written a fascinating article-length update on the progress of his work, published on the Dutch endgame-study site, ARVES. Marc was the co-discoverer of the famous seven-piece position in which it takes White over 500 moves to force a win. Now he reveals which portions of the eight-piece tablebases have been completed and presents some of the most interesting positions found.