Hard test set talkchesscom-2012

[jdart]

for these too - 186 & 193 - what is the test position?

--Jon

[Vinvin]

for these too - 186 & 193 - what is the test position?

--Jon

I'll look at these this evening. I just see there's 237 positions in the PGN but 225 after removing doubles ...

[Paloma]

For #193 > look at #194 60...Bd5

[Vinvin]

for these too - 186 & 193 - what is the test position?

--Jon

#186 is the famous game where Smirin succeed in building a fortress against HIARCS in an inferior position. I don't know yet exactly where to improve black play. After 51.Nc3, the fortress is complete, white can play only king moves, black have no square to enter.

#193 is the game from the test position #192, the game is a highly complicated endgame and I've not yet the full proof for the best move.

[jdart]

Maybe you need a separate "to be investigated" file.

Along those lines you might also look at these:

http://www.chessgames.com/perl/chessgame?gid=1287604 - early exchange sac by Topalov, converted to a win.

http://www.chessgames.com/perl/chessgame?gid=1224884 - Estrin vs. Strand, 20. .. Rxe2, another exchange sac for long-term compensation.

--Jon

[Vinvin]

#185 - the game is given but what is the problem?

#237 has the same "Event" tag as #236 - this is incorrect.

--Jon

#185 : 46.Nxb6+ is the move to avoid (game updated)
#237 : "Event" tag removed

-> file updated, same location : http://home.scarlet.be/vincentlejeune/h ... a-july.pgn

[Vinvin]

Maybe you need a separate "to be investigated" file.

Along those lines you might also look at these:

http://www.chessgames.com/perl/chessgame?gid=1287604 - early exchange sac by Topalov, converted to a win.

http://www.chessgames.com/perl/chessgame?gid=1224884 - Estrin vs. Strand, 20. .. Rxe2, another exchange sac for long-term compensation.

--Jon

The first is very hard to prove.


Second is nice !
SF finds it in less than 5 min (AMD 2*2.2 Ghz)
But we needs more investigations.

[d]3qr1k1/p4pp1/b1nb1n1p/8/1r6/2N2N2/PPP1B1PP/R1BQ1R1K b - - 0 1
2 best moves :
Analysis by Stockfish 2.2.2 JA 64bit:

1. ³ (-0.40): 20...Txe2 21.Cxe2 De7 22.Cc3 Fxf1 23.Dxf1 Ce5 24.a3 Tb7 25.g3 Cxf3 26.Dxf3 Tb8 27.Tb1 Fxa3 28.Rg2 Fc5 29.Ff4 Tb4 30.Da8+ Rh7 31.Dc8 g5 32.Fc7 Cg4 33.Ff4 Cxh2 34.Rxh2 gxf4 35.Df5+ Rg7 36.gxf4
2. ³ (-0.36): 20...Fxe2 21.Cxe2 Dc7 22.Fd2 Tb5 23.b3 Th5 24.h3 Ce4 25.Fe1 Dc8 26.Ch4 Fe5 27.c3 Ff6 28.Cf3 Da6 29.a4 Tf5 30.Rg1 Ce5 31.Ced4 Cxf3+ 32.Txf3 Td5 33.Tc1 Dd6 34.Td3 Fe5 35.Rh1 g6 36.Dg4


[Event "corr-1"]
[Site "corr-1"]
[Date "1966.??.??"]
[Round "?"]
[White "Yakov Estrin"]
[Black "Rune Strand"]
[Result "0-1"]
[ECO "C59"]
[PlyCount "62"]
[EventDate "1966.??.??"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8.Be2 h6 9. Nf3 e4 10. Ne5 Bd6 11. f4 exf3 12. Nxf3 O-O
13. d4 Re8 14. O-O c5 15.Nc3 cxd4 16. Qxd4 Nc6 17. Qh4 Rb8
18. Kh1 Rb4 19. Qe1 Ba6 20. Qd1 Rxe2 21. Nxe2Qe7 22. Neg1 Ne4
23. Nh3 Be2 24. Qe1 Rb5 25. Nfg1 Bxf1 26. Qxf1 Nd4 27. Nf3 Ne2
28. Qe1 Rh5 29. Bd2 g5 30. Nfg1 N2g3+ 31. hxg3 Bxg3 0-1

[kinderchocolate]

There are still a lots PGN errors that many GUIs are unable to read. May I ask you not to hand-code PGN? Download the new ScidVsPC 4.8, it will tell you about 40 PGN errors.

[Vinvin]

There are still a lots PGN errors that many GUIs are unable to read. May I ask you not to hand-code PGN? Download the new ScidVsPC 4.8, it will tell you about 40 PGN errors.

No, I'll continue to modify by hand it's way more faster. No you give me a tools to check syntax, there will be way less errors, thanks ! .

The corrected version + remove around 15 duplicates is here : http://home.scarlet.be/vincentlejeune/h ... august.pgn

[kgburcham]

I had a problem with 2 of the first 8 moves, so I stopped the program.