Polgar Challenge: Pragg leads, Liang has a perfect day

by Carlos Alberto Colodro
4/11/2021 – Despite losing against Vincent Keymer in the last round of the day, Praggnanandhaa kept the sole lead in the Polgar Challenge for young stars. Nodirbek Abdusattorov also ended the day with a loss and goes into the last four rounds of the event a half point behind the leader. Nihal Sarin and Awonder Liang (pictured) are sharing third place a full point behind Pragg — Liang scored 5 out of 5 on Saturday! | Don’t miss the expert analyses by endgame specialist Karsten Müller. | Photo: Crystall Fuller / Saint Louis Chess Club

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Everything still to fight for

Praggnanandhaa took the sole lead in round 9 of the Polgar Challenge on Friday, when Nodirbek Abdusattorov — the then shared leader — lost to Leon Luke Mendonca. The Indian prodigy has remained alone atop the standings ever since, but that does not mean everything is decided in the first event of the Julius Baer Challengers Tour. To the contrary, we can expect a very exciting final day, as four players stand well within range to catch the leader with four rounds to go.

Abdusattorov has perhaps shown the steadiest hand. The Uzbek grandmaster is in sole second place a half point behind Pragg despite having failed to convert a winning position on Friday against Mendonca. If there are no significant changes in the standings table, Abdusattorov will get a chance to leapfrog Pragg in their last-round encounter, when the Uzbek will play with the white pieces.

A half point behind Abdusattorov stand Nihal Sarin and Awonder Liang. While the former has only lost once so far in the event, the latter showed what he is capable of by scoring a perfect 5/5 score on Saturday. It is worth noting that Nihal will likely have a much easier time than Liang on Sunday — if we go by their opponents’ performances in the event.

Finally, German star Vincent Keymer still has chances to catch up with Pragg. Keymer defeated the leader in Saturday’s last round and will need to overcome a 1½-point deficit on Sunday if he wants to take home the $3,000 first prize.

Polgar Chess Challenge 2021

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Pragg kicked off the day in style, beating former co-leader Christopher Yoo with the black pieces:

 
Yoo vs. Praggnanandhaa - Round 11
Position after 5...h5

The Indian star went for the sharp variation with 5...h5 against his younger opponent, who was the only undefeated player in the field at that point. 

Not surprisingly, a tactical skirmish ensued. This was the position after 20 moves:

 
Position after 20...Nd7

White was already committed to the attack and kept up the pressure against the black king in the centre with 21.Nxd6. Pragg had nothing better than to accept the sacrifice as the game continued 21...Kxd6 22.Qxf7 Bb7 23.c4.

The black king remained on d6 until move 30, with Pragg demonstrating that White did not have enough firepower to mate his monarch. Eventually, most of the pieces left the board and Black found himself a rook up in a completely winning endgame. Yoo resigned for the first time in the event on move 73.

Three rounds later, Yoo was again defeated, this time by Liang, who came from winning all three of his games up to that point — in round 12, he had to face Dinara Saduakassova, who, as we mentioned yesterday, had to retire from the competition due to issues with her internet connection.

 
Liang vs. Yoo - Round 14
Position after 28...Qg5

White had a massive advantage by move 28, and here finished off his opponent with 29.Rxe5 Qc1 30.Ne7+ Kg7 31.c5 Qb5, and there is no more counterplay for Black. Yoo resigned a few moves later.

Going into round 15, it seemed like a two-horse race between Pragg and Abusattorov would decide who wins the tournament. However, both players lost their last encounters of the day, giving three more players realistic hopes to win it all with four rounds to go. Pragg was defeated by Keymer, while Nihal beat Abduttasorov. 

On the last day of action, out of the top 5 in the standings table, only Keymer will get a ‘free point’ against Saduakassova. Direct encounters between those fighting for first place are Liang v Keymer (round 18) and Abdusattorov v Praggnanandhaa (round 19).


Endgame analyses by Karsten Müller

Our in-house specialist found three examples of instructive and/or interesting endgames in rounds 11-15. In Khademalsharieh v Mammadzada, he showed how a pawn move can be fatal, while in Gukesh v Badelka and Lei v Mendonce he demonstrated how important it is to activate one’s pieces in the endgame.

 
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1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.g3 dxc4 5.Bg2 c6 6.0-0 b5 7.Ne5 Bb7 8.Nc3 a6 9.b3 cxb3 10.Qxb3 Qxd4 11.Bf4 Be7 12.Rfd1 Qb4 13.Qc2 0-0 14.Rab1 Qc5 15.Qd3 Nd5 16.Nxd5 cxd5 17.Rbc1 Qb6 18.e4 f6 19.Be3 Qd8 20.Ng4 Nc6 21.exd5 Nb4 22.Qe2 Nxd5 23.Bc5 Bxc5 24.Qxe6+ Kh8 25.Bxd5 Bc8 26.Qe2 Bxg4 27.Qxg4 Rc8 28.Be6 Bxf2+ 29.Kxf2 Qb6+ 30.Kg2 Rxc1 31.Rxc1 Qe3 32.Rc2 Re8 33.Bd7 Rf8 34.Qf3 Qd4 35.Bf5 g6 36.Bd3 Rd8 37.Bf1 Qe5 38.Re2 Qd4 39.h4 Rf8 40.Qb7 Qa4 41.Qe7 Kg8 42.Kh2 Qd4 43.Bh3 Rd8 44.Be6+ Kh8 45.Bb3 a5 46.a3 b4 47.a4 Qd6 48.Qf7 Rf8 49.Qe6 Rd8 50.Qxd6 Rxd6 51.Re3 Rd2+ 52.Kh3 Rb2 53.g4 Kg7 54.Kg3 h5 55.gxh5 gxh5 56.Kf3 Kg6 "Gukesh's king" - In the endgame the king should be activated: 57.Ke4 Rh2 58.Rg3+ Kh6 59.Kf5 The king comes closer and closer. Rxh4 60.Kxf6?! Now the king is too greedy. The tricky 60.Bg8!? is much easier: Rg4 61.Rxg4 hxg4 62.Kxg4 and White will win sooner or later by zugzwang, e.g. Kg7 63.Bd5 Kg6 64.Be6+- 60...Rf4+?! 60...Rg4! is more tenacious, but does not defend, e.g. 61.Rh3 Rg6+ 62.Ke5 Kg5 63.Bf7 Now the rook exchange is wrong: 63.Rg3+?! Kh6 64.Rxg6+? Kxg6 65.Kf4 Kf6= 63...Rh6 64.Rg3+ Kh4 65.Rg8 Rb6 66.Bb3 Rc6 67.Rh8 Rc3 68.Bd1 Rc5+ 69.Kd6 Rg5 70.Kc6 Rf5 71.Kb6 Rg5 72.Ka6 Re5 73.Rb8 Kg3 74.Rb5+- 61.Ke5 Rf2 62.Bd5 h4?! Now White's attack wins more or less directly. 62...Rf8 was more tenacious, but does not help due to 63.Be6 h4 64.Rg1 Kh5 65.Rg7 Kh6 66.Ra7 Re8 66...Rb8 67.Kf4+- 67.Rxa5 h3 68.Rd5 h2 69.Rd1 Kg5 70.Rh1 Rh8 71.Bd5 Rh3 72.Rb1+- 63.Rg8 Kh7 63...Kh5 64.Be6+- 64.Rg4 Rh2 65.Be4+ Kh6 66.Kf6 Gukesh's king closes the mating net. Rf2+ 67.Bf5 Kh5 68.Rg8 1–0
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WhiteEloWBlackEloBResYearECOEventRnd
Gukesh D2578Badelka,O24331–02021E04Polgar Challenge 202111.6
Khademalsharieh,S2494Mammadzada,G24431–02021D15Polgar Challenge 202113.9
Lei,T2505Mendonca,L25490–12021B90Polgar Challenge 202114.5

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Rules of thumb are the key to everything when you are having to set the correct course in a complex endgame. In this final DVD of his series on the endgame, our endgame specialist introduces you to the most important of these rules of thumb.


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Carlos 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.

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