5/5/2026 – Yagiz Kaan Erdogmus (pictured) became the sole leader of the TePe Sigeman & Co Chess Tournament after beating Nils Grandelius on Monday, as the Turkish prodigy is the only player on a plus-two score with three rounds to go in Malmö. Jorden van Foreest scored his first-ever win over Magnus Carlsen in what turned out to be an exciting, 88-move battle, while Zhu Jiner defeated Andy Woodward. Nodirbek Abdusattorov and Arjun Erigaisi drew and are tied for second place with Van Foreest, half a point behind Erdogmus. | Photo: Peter Doggers / Official website
new: ChessBase Magazine 225
Chess Festival Prague 2025 with analyses by Aravindh, Giri, Gurel, Navara and others. ‘Special’: 27 highly entertaining miniatures. Opening videos by Werle, King and Ris. 10 opening articles with new repertoire ideas and much more. ChessBase Magazine offers first-class training material for club players and professionals! World-class players analyse their brilliant games and explain the ideas behind the moves. Opening specialists present the latest trends in opening theory and exciting ideas for your repertoire. Master trainers in tactics, strategy and endgames show you the tricks and techniques you need to be a successful tournament player! Available as a direct download (incl. booklet as pdf file) or booklet with download key by post. Included in delivery: ChessBase Magazine #225 as “ChessBase Book” for iPad, tablet, Mac etc.!
YOUR PERSONAL CHESS COACH - Whether you’re taking your first steps into the world of club chess, or already playing at a tournament level: with FRITZ, you can train more efficiently, intelligently and with a more personalised approach than ever before. FRITZ is more than just a chess engine – it’s a training revolution! Whether you’re taking your first steps into the world of club chess, or already playing at a tournament level: with FRITZ, you can train more efficiently, intelligently and with a more personalised approach than ever before.
You will learn how Black's dynamic piece activity and structural counterplay more than compensate for White's extra tempo in the colour-reversed setups.
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Erdogmus, Zhu and Van Foreest score
Round four of the TePe Sigeman & Co Chess Tournament brought three decisive games and a significant shift in the standings. Yagiz Kaan Erdogmus, the 14-year-old Turkish prodigy, moved into sole first place after beating Nils Grandelius, while Jorden van Foreest scored his first-ever win over Magnus Carlsen. Zhu Jiner, meanwhile, collected her first victory of the event, defeating Andy Woodward. The only draw of the day came in the game between Nodirbek Abdusattorov and Arjun Erigaisi.
Round 4 results
Erdogmus is now the outright leader on a plus-two score. The rising star has beaten Zhu and Grandelius, while drawing his other two games, giving him a half-point lead with three rounds to play in the seven-round event. His latest win also deepened Grandelius' difficult start in Malmö: the Swedish number one has now lost all four of his games in the tournament.
In this course, Grandmaster Elisabeth Pähtz presents the London System, a structured and ambitious approach based on the immediate Bf4, leading to rich and dynamic positions. The London System is one of the most popular openings at every level of chess but not all Londons are the same. In this course, Grandmaster Elisabeth Pähtz presents the London System, a structured and ambitious approach based on the immediate Bf4, leading to rich and dynamic positions.
Free sample video: Introduction
Free sample video: 5...cxd4 6.exd4 Qb6 sidelines
Three players stand half a point behind the leader. Abdusattorov and Erigaisi remain in close contention after splitting the point in the only drawn game of the round, although the battle could have developed in Abdusattorov's favour, who had also left an advantage slip in his Saturday encounter against Woodward.
In this video course, Grandmaster Ivan Sokolov explores the fascinating world of Dutch and Grünfelkd structures with colours reversed. In this video course, Grandmaster Ivan Sokolov explores one of the most intriguing and under-examined areas of modern chess: reversed opening systems, focusing on the Reversed Grünfeld and the Reversed Dutch. At first glance, these two systems seem unrelated. However, they share a common strategic challenge: the value of tempi, structure, and psychology when familiar openings are played with colours reversed. Drawing on his long professional experience, Sokolov explains why these positions are far more subtle than they appear and why traditional engine evaluations often fail to capture their true complexity.
Free sample video: Introduction
Free sample video: Larsen’s b4 Plan vs Reversed Stonewall Setups: Larsen - Spassky
Van Foreest joined Abdusattorov and Erigaisi in the chasing group after the most notable result of the day. Playing with the white pieces, the Dutch GM defeated Carlsen in an exciting, 88-move game, earning his first victory over the multiple world champion.
After gaining an extra pawn in a queenless position, Van Foreest had to work hard to beat his famed opponent, as the Norwegian was inches away from escaping in the technical endgame that arose with rook and pawn against knight and two pawns.
Grandmaster Dr. Karsten Müller, one of the world’s leading endgame experts, guides you step by step through everything you need to know in this second volume. Picture this: you’ve outplayed your opponent move by move, you’re clearly better – and then the endgame slips into a draw, simply because you lacked the crucial theoretical knowledge. That is exactly where this course comes in. Without solid endgame skills, there’s no way forward. Rook endgames are most essential: they occur more often than any other type of endgame, and often make the difference between victory and half a point. If you master them, you’ll confidently convert your advantages into wins!
Free video sample: Introduction
Free video sample: Bodycheck
Looking for a way to make the most of an advantageous position against the strongest player of this era - Jorden van Foreest | Photo: Peter Doggers / Official website
Discussing what turned out to be a nervy, lengthy struggle - Jorden van Foreest and Magnus Carlsen | Photo: Peter Doggers / Official website
Zhu's win over Woodward was also important for the standings. After a difficult start, the Chinese grandmaster got off the mark by handing Woodward his first loss of the tournament. Woodward, who had begun the event with a win over Grandelius and then remained among the leaders, is now tied for fifth place with Carlsen. Both players have one win, two draws and one loss after four rounds.
Carlos Alberto ColodroCarlos Colodro is a Hispanic Philologist from Bolivia. He works as a freelance translator and writer since 2012. A lot of his work is done in chess-related texts, as the game is one of his biggest interests, along with literature and music.
YOUR PERSONAL CHESS COACH - Whether you’re taking your first steps into the world of club chess, or already playing at a tournament level: with FRITZ, you can train more efficiently, intelligently and with a more personalised approach than ever before.
YOUR PERSONAL CHESS COACH - Whether you’re taking your first steps into the world of club chess, or already playing at a tournament level: with FRITZ, you can train more efficiently, intelligently and with a more personalised approach than ever before.
While tactics decide the game in concrete moments, strategy guides the entire battle. Understanding how to improve your pieces, create weaknesses, execute maneuvers, and steer the game toward favorable structures is what defines strong players.
The Italian Four Knights is the ideal choice. It combines the solid foundation of classical openings like the Ruy Lopez or the Italian Game with an active, initiative-driven style of play.
IM Andrew Martin shows why this 19th-century opening weapon still is a fantastic choice for club players. The Evans produces exciting chess and teaches the art of attack.
The major part of the material on which the Petroff Defence Powerbook 2026 is based comes from the engine room of playchess.com: 357 000 games. This imposing number is supplemented by another 17 000 from Mega and from correspondence chess.
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