12/28/2021 – For 24 days, you mastered fierce end-game puzzles. We received over 6800 emails this year! This topped last year's calendar, bravo! From all entries we randomly selected three winners for each day, who can look forward to ChessBase Shop vouchers or two Fritztrainer DVDs signed by Karsten Müller. Those who guessed all 24 doors correctly, entered into our super raffle for one of three grand prizes.

12/28/2021 – Usually, in open positions a bishop is stronger than a knight. But in chess there's no rule without exception! In the diagram position it is White who has the knight, and it is White to move and win. What would you do?

12/27/2021 – In the history of the Chess World Championships Viktor Korchnoi is an extremely successful player, even if he was ultimately denied the title. If you count the 1974 Candidates Final for challenging Fischer, he played three 'World Championship matches'. The era of Korchnoi's participations in the WCh cycle stretches from the Curacao Candidates Tournament in 1962 to the 1991 quarterfinal match against Timman, which he played at the age of 60. The dramatic fight against Anatoly Karpov in Baguio City in 1978 stands out in particular: hypnosis, cheating accusations with blueberry yoghurt, X-ray examinations on chairs, mirror glasses worn at the board, Korchnoi's comeback to 5-5 after trailing 4-1 are a few of the external circumstances involved!

12/27/2021 – The first five rounds of the World Rapid Championship were played on Sunday. Three players are sharing the lead on 4½ points: defending champion Magnus Carlsen, local hero Jan-Krzysztof Duda and Baadur Jobava from Georgia. On the women’s tournament, Alexandra Kosteniuk and Valentina Gunina have a perfect 4/4 score after the first day of action. | Foto: Michal Walusza

12/26/2021 – It was just a few weeks ago that Markus Ragger published a complete repertoire on two FritzTrainers for his favourite opening against 1.d4: the Gruenfeld Defence. In the new ChessBase Magazine #205 he provides an update on the variation with 5.Bd2, since the new idea of 5...c5 has recently proved very attractive at the highest level. Among others, it was used by Carlsen, Giri and Dubov. While Markus Ragger in his FritzTrainer still recommends the common and still fully valid continuation 5...Bg7, his appeal in ChessBase Magazine is clear: "Let's make 5...c5 the main line against 5.Bd2!" You can watch an excerpt from his video analysis here!

12/26/2021 – Herman Grooten is an International Master, a renowned trainer and the author of several highly acclaimed books about chess training and chess strategy. In the 59th instalment of his ChessBase show "Understanding before Moving", Herman talks about the battle between static and dynamic factors. | Photo: Tommy Grooten

12/26/2021 – In November we launched a new edition of our flagship program, Fritz. Version 18 has a special mode in which Fritz allows its opponent to actually win games, if he is able to find clever moves. Many amateurs and club players have sent in games that they won with brilliant ideas. But how about grandmasters? Fritz determines the playing strength of its opponent, and makes him find more difficult brilliancies. Iniyan Panneerselvam, a young GM, has written a report on his experience with Fritz 18.

12/26/2021 – One of the most anticipated events in the chess calendar, the FIDE World Rapid and Blitz Championship, is around the corner. The open and women’s championships that have been held concurrently since 2016 will take place on December 25-31 in Warsaw, Poland, at the PGE Narodowy Stadium. | Pictured: Alireza Firouzja facing Hikaru Nakamura at the 2019 edition | Photo: Amruta Mokal

12/25/2021 – The Serbian name "Darko" comes from "Dar" for "gift". Good wishes are bestowed often upon our children, be it luck with the Biblical name "The son of luck" or "Benjamin", or in this case, the gift of being gifted. A special gift indeed was given to Darko Hlebec, an interesting composing style. Study specialist Siegfried Hornecker presents presents examples of his work and Darko's comments about it.

12/25/2021 – A few weeks ago we announced a Brilliancy Challenge: send us brilliant games you have recently played and compete for some valuable prizes. Here's a festive example: Andreas Krentel, a physiotherapist, used to play in a chess club 15 years ago. He was looking for an opponent to test his wits against. Suddenly he found the prefect chess partner: Fritz 18! And it became like the good old days in the chess club. Andreas has sent us a couple of games to show how the program encouraged him to execute brilliancies.

12/25/2021 – We are sorry, but our calendar doesn't have 25 doors, but one solution still has to be shown. Thank you! We were able to beat last year's result, thanks to your record participation. All winners will be announced on 27.12.

12/25/2021 – Part of the attraction of the Netflix series "The Queen's Gambit" is the design: costumes, buildings and music evoke the 1960s, the time in which the series is set. In a crucial scene of the series the Dutch band Shocking Blue provides the background music. Shocking Blue, founded in 1967, might not be as famous as other bands from the 1960s and 1970s but it still has ardent followers, and one of them is a prominent chess player and well-known coach. | Photo: Netflix