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Member since Sep-27-04 · Last seen Feb-20-18
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   Ulhumbrus has kibitzed 21604 times to chessgames   [more...]
   Feb-15-18 Aronian vs Nakamura, 2018
Ulhumbrus: One alternative to 14 a4 is 14 Bf3 supporting the invasion Nc6.
   Feb-06-18 Yifan Hou vs Karpov, 2018
Ulhumbrus: If Black can get away with 10...d5 this suggests Qe2 or Re1 earlier for White. It suggests as well that it is useful for Black to know when he can play the advance ...d5.
   Feb-06-18 Yifan Hou vs Karpov, 2018
Ulhumbrus: 14 Qd1 threatens 15 Bd2 attacking the knight defended by the black queen which defends as well the d4 pawn, and so overworking the black queen and as undermining the d4 pawn. One alternative is to seek relief by 14...Nfd7 but black lacks time for that as on 15 Nxd7 Qxd7 16 Ne5 ...
   Feb-06-18 Karpov vs Yifan Hou, 2018 (replies)
Ulhumbrus: 5...Qe7!! discourages 6 e4 by attacking indirectly the e pawn on the e file. When Karpov conceded the bishop pair by 11 Bxf6 gxf6 12 Qa4 he may have not expected Hifan You to respond by 12...Kd8!! placing her king on the closed d file. This suggests that Hifan You was in inspired ...
   Feb-06-18 Karpov vs Yifan Hou, 2018 (replies)
Ulhumbrus: 14...Bb7 begins a plan to undermine White's d5 pawn by ...f5. The plan fails because Black's king gets exposed and that is too much for the d5 pawn. One alternative is 14...c4 followed by ...Nc5 and ...Bd7
   Feb-06-18 Yifan Hou vs Karpov, 2018 (replies)
Ulhumbrus: If the advance 14...d5 can be called a potential threat this suggests delaying 13 Ne3 by eg 13 Qe2 As things turn out, the attack fails. The attacks of even Spassky and Kasparov have failed sometimes against Karpov's defence.
   Feb-06-18 Karpov vs Yifan Hou, 2018 (replies)
Ulhumbrus: One meaning of the capture 13 dxc5 may be that following the exchange of queens Karpov is able to play the manoeuvre 15 Rb1 followed by 16 Rb5 and then after 16...c4 the penetration 18 Rc5. This suggests that if White had not had this resource Karpov might not have made the choice
   Feb-04-18 A Giri vs Carlsen, 2018
Ulhumbrus: If 12 Nxc3 does not gain enough one alternative is 12 h4. One justification for 12 h4 is this: If Black has the initiative on the queen side and on the king side Black's rook occupies the g file what other attacking prospect does White have?
   Feb-04-18 M Vachier-Lagrave vs Anand, 2017
Ulhumbrus: One alternative to 11...f6 is 11...f5 in order to prevent Ne4 in reply to ...Qd6 but that invites 12 Qb3 both attacking the N on d5 and unpinning the N on f3 which attacks the e5 pawn Instead of 14...Nce7, 14...f5 seems consistent, having unpinned the N on d5 by 13...Kh8. However ...
   Feb-04-18 Anand vs Wei Yi, 2018
Ulhumbrus: If 16 Bxd6 is insufficent one alternative is 16 Be3 to be followed by c5
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