Chess Base

• Carlsen returns to defend Esports World Cup title in Paris

  Magnus Carlsen will return to defend his Esports World Cup title as chess makes its second appearance at the event, this time in Paris. The competition runs from 11 to 15 August and features a rapid 10-minute time control without increment. Fourteen players have already qualified directly for the group stage, while eight others will contest Tuesday's Play-In for the final two places in the 16-player field. | Photos: Esports World Cup 2025

• Help us build the next ChessBase

  We're planning the next chapters of ChessBase and we want input from the people who actually use it, before we decide what to build first. Help us by taking part in a survey that asks how you work day to day: your setup and hardware, how you use engines and databases, and which parts of the interface help or get in your way. Filling out the survey takes around three minutes. If you fill it out we will send you a thank-you voucher gift.

• Shifts and mirrors in a chess problem

  A year ago problem composer Werner Keym issued a challenge: compose a study in which White is winning – but one that can be shifted and mirrored vertically and horizontally, with all vertically shifted and mirrored positions drawing, and all horizontally shifted and mirrored positions losing. Here is the elegant solution, which reminds us of the famous Babson task.