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Starting Saturday: TePe Sigeman & Co with Svidler, Abdusattorov and Ju

The TePe Sigeman & Co tournament has been held in Malmö since 1993 — it was only cancelled in 2020 due to the pandemic. The organisers have once again put together a very interesting 8-player field for the 2024 tournament: Nodirbek Abdusattorov, Arjun Erigaisi, Vincent Keymer, defending champion Peter Svidler (pictured), Nils Grandelius, Anton Korobov, Marc’Andria Maurizzi and women’s world champion Ju Wenjun. | Photo: David Llada

Ukraine , France , China , Mexico-city , Distrito-federal , Mexico , India , Russia , Germany , Saint-petersburg , Sankt-peterburg , Uzbekistan

Disproportionate declines of formerly abundant species underlie insect loss

Studies have reported widespread declines in terrestrial insect abundances in recent years1–4, but trends in other biodiversity metrics are less clear-cut5–7. Here we examined long-term trends in 923 terrestrial insect assemblages monitored in 106 studies, and found concomitant declines in abundance and species richness. For studies that were resolved to species level (551 sites in 57 studies), we observed a decline in the number of initially abundant species through time, but not in the number of very rare species. At the population level, we found that species that were most abundant at the start of the time series showed the strongest average declines (corrected for regression-to-the-mean effects). Rarer species were, on average, also declining, but these were offset by increases of other species. Our results suggest that the observed decreases in total insect abundance2 can mostly be explained by widespread declines of formerly abundant species. This counters the common narrative that biodiversity loss is mostly characterized by declines of rare species8,9. Although our results suggest that fundamental changes are occurring in insect assemblages, it is important to recognize that they represent only trends from those locations for which sufficient long-term data are available. Nevertheless, given the importance of abundant species in ecosystems10, their general declines are likely to have broad repercussions for food webs and ecosystem functioning. An analysis of more than 500 sites distributed worldwide finds that declines in the abundance of terrestrial insects are attributable mainly to decreases in species that were formerly abundant, rather than being the result of losses of rare species.

Ireland , Harmonia , Minas-gerais , Brazil , Kucherov , Kurskaya-oblast- , Russia , Wuhan , Hubei , China , Fray-jorge , Iv-region

Happy birthday to Grandmaster Nils Grandelius!

Today, 3 June 2023, Nils Grandelius celebrates his 30th birthday. Grandelius is known as his country's long-time leading player, an important member of the Swedish team, and has won several major international tournaments in his career to date. Grandelius worked as Magnus Carlsen's second for the World Chess Championship matches in 2016 and 2018, and is also a well-known author and teacher. | Nils Grandelius at the TePe Sigeman & Co. tournament in 2023 | Photo: David Llada

India , Switzerland , Olomouc , Olomoucký , Czech-republic , Abu-dhabi , Abuz-aby , United-arab-emirates , Iran , Poland , Iceland , Gibraltar

Ugly Guns: The Worst Looking Guns In The World

No matter how well they work, some guns are just unsightly. These are some of the most ugly guns in the world.

Japan , Korobov , Saratovskaya-oblast- , Russia , Germany , France , El-salvador , Belgium , United-states , Salvador , German , Frenchmen

ChessBase Magazine 213

ChessBase Magazine 213
chessbase.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from chessbase.com Daily Mail and Mail on Sunday newspapers.

Korobov , Saratovskaya-oblast- , Russia , London , City-of , United-kingdom , France , Romania , Berlin , Germany , Romanian , French

Practical Tips for the Tournament Player

What happens when you find yourself in a lost position? Many chess players - as Jan Markos states in his video for ChessBase Magazine #213 - react to this realisation with a loss of energy or even inner resignation. They make a few more normal moves, and a little later the game is over. In the sixth part of his training series for ChessBase Magazine, Jan Markos explains what it takes to get the maximum out of a lost position in a practical game. Take a look at an excerpt from his video!

Romania , Berlin , Germany , France , London , City-of , United-kingdom , Slovak-republic , Korobov , Saratovskaya-oblast- , Russia , Slovakian

CBM #213 "Special": Vishy Anand

The play of the 15th World Champion is appreciated from different perspectives in the current ChessBase Magazine: In Mihail Marin's article "Anand as a positional ace" you will find selected strategic masterpieces (and two interactive training videos). Karsten Mueller presents Anand's best endgames (including a detailed video introduction). And last but not least, our CBM authors Adhiban Baskaran, Imre Hera, David Navara, Igor Stohl, Yago Santiago and others present their favourite games of the "Tiger of Madras" - an exclusive collection of 26 victories from the period 1985 to 2022. You can watch Adhiban's analysis of the game Anand-Baron (2019) here! | Photo: Thomas Schloemann

Korobov , Saratovskaya-oblast- , Russia , Berlin , Germany , India , France , Romania , London , City-of , United-kingdom , Romanian

ChessBase Magazine #213: "The Analysis"

The new ChessBase Magazine #213 offers, among many other things, 48 extensively annotated games, from the WR Masters 2023 as well as the EICC 2023, and in the "Special" our authors present their favourite games of Vishy Anand. From the WR Masters tournament winner Levon Aronian as well as Vincent Keymer and Jan-Krzysztof Duda annotate their best games. In addition, Gukesh and Praggnanandhaa each present one of their games in the video! You can watch Aronian's analysis of his first round game with Praggnanandhaa in abbreviated form here - enjoy!

Romania , France , Prag , Praha , Hlavníesto , Czech-republic , London , City-of , United-kingdom , Berlin , Germany , Korobov

The French á la Carlsen

The new ChessBase Magazine #213 once again delivers a big swing of ideas for your repertoire in eleven opening articles - from Caro-Kann to the King's Indian! Sergey Grigoriants examines a new idea on move four that has become the latest fashion thanks to Magnus Carlsen, among others: 4...h6 in the French Defence! Black offers a pawn sacrifice – after the exchange on f6 the pawn on d5 is simply hanging. Can this be any good? The new engines and Sergey Griogoriants show that Black gets "compensation and great piece activity in all lines". Take a look!

Korobov , Saratovskaya-oblast- , Russia , France , London , City-of , United-kingdom , Berlin , Germany , Romania , Romanian , French

NEW: ChessBase Magazine #213

WR Masters 2023: The tournament winner, Levon Aronian, comments on two of his games. Plus analyses by Keymer, Duda and others. Gukesh and Praggnanandhaa each present one of their games in video! - European Individual Championship 2023: The winner Sarana comments on his groundbreaking game against Korobov, plus analyses by Shevchenko, Esipenko, Ponomariov and many others - "Special" on Vishy Anand: exclusive collection of 26 annotated games + contributions on strategy and endgame - French Gambit á la Carlsen: Sergey Grigoriants examines 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 h6!? – 0-0-0 against Bogo-Indian: Spyridon Kapnisis shows how White gets good play after 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 a5 5.a3, long castling not excluded! – “Fundamental Endgame Knowledge” Part 3: King and Pawn against King and much more!

France , Romania , Berlin , Germany , London , City-of , United-kingdom , Korobov , Saratovskaya-oblast- , Russia , Romanian , French