Stockfish drew classic position

[Jouni]

https://tcec-chess.com/#div=vsob25&game=60&season=25. First move ?? blunder .

[peter]

https://tcec-chess.com/#div=vsob25&game=60&season=25. First move ?? blunder .

That's starting from 45th move of A.B.Petrosian- L.Szalai, played at a Junior Tournament 1970, if my database is fully correct about that, it has been also used as a test position here several times before, guess you knew it anyhow, just to mention

search.php?keywords=2k5%2F2p5%2F1q1p4%2 ... Q4P1%2F8+w+-+-+

[Jouni]

Chessdb thinks Qc3 best move? What is the truth? Talkchess search is ugly and almost useless to me.

[peter]

Chessdb thinks Qc3 best move? What is the truth? Talkchess search is ugly and almost useless to me.

There's not a single game changing move at 46th except the am Nxb6?, plans to break through at a- line and or c (e)- line and or g (h)- line work in different ways, which one's shortest, depends on Black's answers. 46.Qe2 as well as Qb1 pretend Black's Bf2 and or Be1 at once (so does Qc3 as for e1), but that isn't necessesary to be avoided so soon neither, not until White's attack against a- pawn, d- and c- pawn aren't ready to be executed by Knight and Queen finally. So you can start with King- moves too, bringing it to f1 sets Queen free and again guards Black's Bishop from not coming to center over f1. Other one way is to get White's King to a4 instead, that needs according manoeuvres with Knight pretending Black's a-pawn from advancing.
Here
viewtopic.php?p=919558#p919558
is the end of a game I had with Milos here some time ago, if you take the time to go it backward to starting position, you'll probably get some deeper informations. Already then I saw Lc0 playing that on its own quite well against SF.
Lc0 in the TCEC- game you quoted showed one more straight way to White's win, regards

[Ajedrecista]

Hello Peter:

That's starting from 45th move of A.B.Petrosian- L.Szalai, played at a Junior Tournament 1970, if my database is fully correct about that, it has been also used as a test position here several times before, guess you knew it anyhow, just to mention

search.php?keywords=2k5%2F2p5%2F1q1p4%2 ... Q4P1%2F8+w+-+-+

Thank you for pointing to that thread, I had completely forgotten about it! Just a small thing: I found on the Internet that the player with black pieces is spelled 'Hazai' (sometimes 'Hazaj'):

https://www.chessgames.com/perl/chessgame?gid=1281614 (PGN attached here).
https://www.belgianchesshistory.be/tour ... t-schilde/ (Game 60 of this web).

[pgn][Event "6th international junior tournament"] [Site "Schilde BEL"] [Date "1970.07.25"] [EventDate "?"] [Round "9"] [Result "1/2-1/2"] [White "Arshak B Petrosian"] [Black "Laszlo Hazai"] [ECO "E80"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "110"] 1.c4 g6 2.Nc3 Bg7 3.d4 Nf6 4.e4 d6 5.f3 e5 6.d5 Na6 7.Be3 Nh5 8.Qd2 Qh4+ 9.Bf2 Qe7 10.O-O-O O-O 11.Be3 f5 12.Bd3 f4 13.Bf2 Bf6 14.Nge2 Bh4 15.Bg1 Bd7 16.Kb1 b6 17.Nc1 Nc5 18.Bc2 a5 19.Bxc5 bxc5 20.Ba4 Bxa4 21.Nxa4 Rfb8 22.Qc2 Kh8 23.Rd3 Rb4 24.Ra3 Qe8 25.Nd3 g5 26.h3 Nf6 27.Rc1 Kg7 28.b3 Nd7 29.Qd2 Rb7 30.Ndb2 Nb6 31.Ka1 h5 32.Nd1 Nxa4 33.Rxa4 Rb4 34.Nc3 Qc8 35.Nb5 Bg3 36.Qe2 Kf6 37.Rb1 Ke7 38.a3 Rxa4 39.bxa4 Kd8 40.Nc3 Rb8 41.Rb5 Rxb5 42.axb5 Qa8 43.Na4 Qa7 44.Ka2 Kc8 45.Qb2 Qb6 46.Nxb6+ cxb6 47.h4 gxh4 48.Qd2 h3 49.gxh3 h4 50.Kb3 Kb7 51.Ka4 Ka7 52.Qg2 Kb7 53.Qb2 Ka7 54.Qc2 Kb7 55.Qc3 Ka7 1/2-1/2[/pgn]

I had some problems finding the game with 'Szalai' searches, this is why I am posting now.

Regards from Spain.

Ajedrecista.

[peter]

Just a small thing: I found on the Internet that the player with black pieces is spelled 'Hazai' (sometimes 'Hazaj'):

Thanks for correcting, Jesus, in my database it's stored quite right, I simply mistyped it then here, sorry for that.
Wish you and everybody a good end of 2023 and a fine 2024 in advance, regards