roentgenium has kibitzed 48 times to chessgames   [less...]

Sep-14-19 Louis Stumpers    roentgenium: Thanks very much for taking the time to go through my post, <Tiggler>. I did some brief searching on Google, and it seems like the correct answer to the problem is in fact 1/3, with the reasoning being exactly that which you used in your first post (kibitz 9565)! So I ...      Sep-08-19 Russian Championship Superfinal (Women) (2019)   roentgenium: I'm afraid I must respectfully disagree with you here, <AylerKupp>. Whilst I personally have no problem with using the Sonneborn-Berger score as a tiebreaker method, I feel your arguments carry their weight in a Swiss-style tournament, as opposed to a round-robin ...      Apr-01-18 AlphaZero vs Stockfish, 2017    roentgenium: Surely a completely appropriate puzzle for the date :) In keeping with the spirit, we should all provide annotations explaining the motivations behind these moves.      Jan-17-18 E Blomqvist vs E Romanov, 2016    roentgenium: I completely missed 25...Bd3! and hence erroneously thought the solution to today's puzzle was 23...Qa6, attempting to hit the trapped Knight and threaten Re2+. But unfortunately, Black's back rank issues arise in this flawed line, as 24.Re1 is an effective parry. Perhaps the ...      Jan-03-18 Mamedyarov vs X Bu, 2017   roentgenium: If 41.Kf4, then 41...Kh4 42.e5 g3 43.e6 g2 44.e7 g1=Q 45.e8=Q Qf1+, with 46...Qe1+ and 47...Qxe8 to win the game.      May-01-17 M Wecker vs A Petursson, 2017    roentgenium: I think this puzzle is great for a Monday, as it offers several lessons for lower-rated players (such as myself!). When I first looked at the position, it honestly looked fairly 'normal' to me. Where was the danger? I even wondered if it was in fact White to play and win, or if ...      Oct-04-16 Caruana vs J Houska, 2016    roentgenium: I think 45...Rc7 unfortunately puts the Rook on a square where the Knight will eventually fork it, or mate will result. This is due to the tactical followup 46.Nf6+! The possible continuations: 46...Kg6/Kg7 47.Ne8+ wins the Rook; 46...Kh8 47.Rd8+ Kg7 48.Ne8+ wins the Rook (as ...      Sep-04-16 Baku Olympiad (2016)    roentgenium: For those who like their tactics, Caruana-Peralta from move 30 is a sight to behold, with more removal of defenders, forks, zwichenzugs, overworked pieces, pins and skewers than you can poke a stick at. These guys are seriously on another level.      Aug-17-16 H Beer vs H Grob, 1966    roentgenium: Like some of the other kibitzers here, I was able to find 32...Rxf2 and correctly evaluate the two key variations 33.Rxf2 and 33.Rxe5 as wins for Black, but missed the easy win at the last hurdle, failing to see 36...Bc4+! So I guess it's a pass mark, but not full marks for me ...      Aug-02-16 V Stepovoj vs E Chasovnikova, 1996    roentgenium: I was at first wondering why Black did not play 10...e5 , but then I noticed that this would also be a good candidate for an early week tactical puzzle, with 11.Qc3! winning material, for example: 11...exf4 12.Qxg7 Qf6 13.Qxf6 Nxf6 14.Nc7+ with maybe 15.Rc1 to ensure the Knight ...      Jul-03-16 C Wang vs Wei Yi, 2016     Jun-21-16 G Mittermayr vs C Kleijn, 2009     May-31-16 D Mitran vs M Carbajo Berrocal, 2007     May-30-16 S Lu vs F Firman Syah, 2016     May-09-16 M Brunoehler vs K Richter, 1941     Apr-05-16 S Bjerke vs M Freitag, 2014     Mar-31-16 World Championship Candidates (2016)     Mar-07-16 E Liu vs B Lugo, 2006     Mar-06-16 Muzychuk - Hou Women's World Championship Match (2016)     Feb-06-16 Gibraltar Masters (2016)     Feb-01-16 J Houska vs T Hebbes, 2014     Jan-05-16 G Guseinov vs Fedorchuk, 2014     Dec-29-15 F Osmanodja vs H M Klek, 2014     Dec-23-15 R Mamedov vs A R Saleh Salem, 2014     Dec-09-15 L Lederman vs Suba, 2014     Dec-08-15 Smyslov vs F El Taher, 1990     Dec-03-15 Spassky vs S Avtonomov, 1949     Dec-02-15 Capablanca vs NN, 1918     Nov-26-15 Topalov vs A Antunes, 1992     Nov-24-15 Y Sakharov vs R Nezhmetdinov, 1957     Nov-19-15 Sveshnikov vs J Stocek, 2000     Nov-18-15 Ganguly vs H Hernandez Carmenates, 2008     Oct-28-15 J Klinger vs J Norgaard, 1982     Oct-20-15 Kasparov vs Csom, 1980     Sep-19-15 World Cup (2015)     Aug-31-15 Sinquefield Cup (2015)     Aug-25-15 K Lapinski vs E Sharapov, 2007     Aug-12-15 S Agdestein vs Karjakin, 2014     Aug-04-15 B Donaldson vs R A Dowden, 2001     May-25-15 FIDE Grand Prix Khanty-Mansiysk (2015)

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