Why was GM Savic SO Upset, do NOT understand ?

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, Rebel, chrisw

Chessqueen
Posts: 5582
Joined: Wed Sep 05, 2018 2:16 am
Location: Moving
Full name: Jorge Picado

Why was GM Savic SO Upset, do NOT understand ?

Post by Chessqueen »

Why was GM Savic so Upset, do NOT understand, GM Pranav made a legal move, so what is the reason ? See if you can find the winning move with your engine with White, please do NOT use any endgame Tablebases.
Do NOT worry and be happy, we all live a short life :roll:
kiroje
Posts: 60
Joined: Wed Jul 25, 2012 10:12 am
Location: Copenhagen, Denmark
Full name: Kim Jensen

Re: Why was GM Savic SO Upset, do NOT understand ?

Post by kiroje »

Chessqueen wrote: Sat Jul 17, 2021 3:01 am Why was GM Savic so Upset, do NOT understand, GM Pranav made a legal move, so what is the reason ? See if you can find the winning move with your engine with White, please do NOT use any endgame Tablebases.
Maybe because there is no winning attempt but just moving around waiting if black potentiallu blunders ?
“Modern chess is too much concerned with things like pawn structure. Forget it, checkmate ends the game.” – Nigel Short
User avatar
Ajedrecista
Posts: 1968
Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

Re: Why was GM Savic SO upset, do NOT understand?

Post by Ajedrecista »

Hello George:
Chessqueen wrote: Sat Jul 17, 2021 3:01 am Why was GM Savic so Upset, do NOT understand, GM Pranav made a legal move, so what is the reason ? See if you can find the winning move with your engine with White, please do NOT use any endgame Tablebases.
Savic's upset after Ra7 (2:43 in the video, then playing upset from there) might be for Pranav shuffling pieces in a drawn position because the 50-move rule and the 75-move rule were far from there (I counted 20 moves from f4 push), thinking that being a minute up in the clock will not make him blunder. I annotated the incomplete game in PGN:

[pgn][Event "Paraćin Rapid 2021"]
[Site "Paraćin (Serbia)"]
[White "Pranav, Vijay"]
[Black "Savic, Miodrag R"]
[setup "1"]
[FEN "7r/8/2n1p3/2k2p2/7R/2P3P1/2B2P2/2K5 b - 0 1"]
[Result "1/2-1/2"]
1. ... Rd8 2. Rh6 Rd6 3. Bb3 Rd3 4. Ba4 Rxc3+ 5. Kd2 Rf3
6. Bxc6 Kxc6 {Only move to not lose} 7. Ke2 Ra3 8. Rxe6+ Kd5 {Only move to not lose} 9. Re8 Rb3 10. Kf1 Kd6
11. Kg2 Rb5 {0:56 in the video} 12. Kf3 {0:57 in the video} Rb4 {... Rb2 also possible to not lose} 13. Kg2 Rb5 {1:03 in the video; including hesitation with ... Rb7} 14. Kh3 Rb4 15. f4 Rb7
16. Re5 {1:16 in the video} Rh7+ {Only move to not lose} 17. Kg2 Rf7 18. Kf3 Rf8 {... Rf6 also possible to not lose} 19. Ke3 Rg8 20. Kf2 Rf8 {Only move to not lose}
21. Kg2 Rf7 22. Re8 Kd7 23. Ra8 Rf6 24. Ra7+ Ke8 25. Rh7 Kf8
26. Kf3 Rb6 27. Rh5 Rb5 {... Rf6 also possible to not lose} 28. Rh7 Rb2 29. Ra7 Rb5 30. Kg2 Rb6 {Only move to not lose}
31. Ra5 Rf6 {Only move to not lose} 32. Ra7 Rb6 33. Rh7 Kg8 34. Re7 Kf8 35. Ra7 {2:43 in the video; visible upset from there} Rh6
36. Ra5 Rf6 {Only move to not lose} 37. Kf3 Kg7 38. Rb5 Kg6 39. Ke3 Rd6 40. Ra5 Kf6
41. Kf3 Rb6 42. Ra8 Rb3+ 43. Kg2 Rb1 44. Kh2 Kg6 45. Ra6+ Kg7
46. Kg2 Kf7 47. Kh3 Rh1+ 48. Kg2 Rb1 49. Rc6 Ra1 1/2-1/2[/pgn]

I inserted comments in the key positions of the game. The requested position to analyse in the original post should be the next one, which happened twice in the game:

[d]4R3/8/3k4/1r3p2/8/6P1/5PK1/8 w - - 0 1

SF 14 with full 3, 4 and 5 Syzygy EGTB (opposite to OP's request of not using EGTB) rises its eval up to +61.12 at depth 47/51 in my old PC from year 2010 after searching more than 27095 MN:

Code: Select all

[...]
 47/51	1:15:53	27.095.126.266	5.950.830	+61,12	Kg2h3 Rb5b7 Kh3h4 Rb7g7 f2f3 Kd6d5 g3g4 f5f4 Re8e4 Rg7f7 Kh4g5 Rf7f8 Re4xf4 Rf8g8+ Kg5h5 Kd5e6 Rf4f5 Ke6e7 Kh5h4 Rg8b8 f3f4 Rb8a8 Rf5h5 Ke7f6 Rh5h6+ Kf6f7 f4f5 Kf7g7 Kh4g5 Ra8a7 f5f6+ Kg7g8 Rh6h2 Ra7a4 Rh2e2 Kg8f8 Re2e7 Ra4d4 Re7b7 Rd4e4 Kg5h5 Re4d4 g4g5 Kf8e8 Rb7e7+ Ke8f8
 48/56+	1:17:21	27.612.001.361	5.948.480	+61,20	Kg2h3
 48/56+	1:20:41	28.868.996.056	5.963.342	+61,28	Kg2h3
 48/56+	1:25:31	30.689.989.189	5.980.384	+61,41	Kg2h3
 48/56+	1:29:31	32.245.749.719	6.003.153	+61,64	Kg2h3
There were 18,518,886 TB hits up to depth 47/51 and 21,333,390 TB hits up to the last shown line at depth 48/56+. It is needless to say that I can not figure the winning move, it looks so drawish for me!

Regards from Spain.

Ajedrecista.
User avatar
AdminX
Posts: 6340
Joined: Mon Mar 13, 2006 2:34 pm
Location: Acworth, GA

Re: Why was GM Savic SO Upset, do NOT understand ?

Post by AdminX »

Chessqueen wrote: Sat Jul 17, 2021 3:01 am Why was GM Savic so Upset, do NOT understand, GM Pranav made a legal move, so what is the reason ? See if you can find the winning move with your engine with White, please do NOT use any endgame Tablebases.
Maybe it was the noise in the playing hall or loud kibitzers.
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
Metaphysician
Posts: 26
Joined: Wed Feb 20, 2019 10:46 pm
Full name: Neil Kulick

Re: Why was GM Savic SO Upset, do NOT understand ?

Post by Metaphysician »

I do not know why the GM was upset, if he was. Did he think his opponent was not making progress? But in the position Ajedrecista took the time to post, the engine’s Kh3, going after the weak f5 pawn,was easily winning for white. Maybe he was hoping black would just blunder in time pressure.
It would be interesting to know the players’ reactions later, if and when they discovered that white had a win.