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Up Topic The Rybka Lounge / Test Positions / Hard-Talkchess-2020 set
- - By user923005 (****) Date 2019-10-01 21:23 Upvotes 1
ttached is vinhard.7z archive which contains the analyzed problem set and the bare problem set.
Note that for some, I have a large number of best moves. For example:
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - -

bm Rxb3+ Rc8 Rb7 Rab6 Ra5 Ra7 Raa8 Kf8 Rh8 Rg8 Rba8 Ke6 Kd7 Rd8 Kf6 Kd8 Rc6 Rb4; id vinhard.020;

and
4bbk1/3nq2r/pr2p3/Np1p1p1p/1PpP1Pp1/2P1P1P1/PQ1NB1PR/2K4R b - -

bm e5 Bg7 Nf6 Nb8 Qd8 Qd6 Qf7 Rh6 Qf6 Kh8 Rg7 Bg6 Bf7 Qg7; id vinhard.068;
Attachment: vinhard.7z - vinhard test set, with analyzed and simple EPD records (29k)
Parent - - By dorszcz (**) Date 2019-10-02 15:12
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - -


Only Rxb3 wins.
All other moves draws because white is going to play Bc2-Bd1-Bc2-Bd1...

For example: 1... Rxb3+ 2. Kxb3 Rb6+ 3. Kc2 Rb2+ 4. Kc1 Re2 5. Rd2 Rxe3 6. Bc2 Rxg3 7. Rh2 Rf3 8. Bd1 Rxf4 9. Be2 e3 10. Kc2 Rd4 11. Bf3 Ke6 12. Kc3 Kf6

5. Rd1 does not help too.

1... Rxb3+ 2. Kxb3 Rb6+ 3. Kc2 Rb2+ 4. Kc1 Re2 5. Rd1 Rxe3 6. Rg1 Rc3+ 7. Bc2 Rxc4 8. Kd2 d5 9. Rb1 d4 10. Kd1 Kd6 11. Rb6+ Kc7 12. Rb3 Kc6 13. Rb8 Rc3 14.
Rb3 Rxb3 15. Bxb3 Kb5

4bbk1/3nq2r/pr2p3/Np1p1p1p/1PpP1Pp1/2P1P1P1/PQ1NB1PR/2K4R b - -


e5 wins but black can play it later for example after Bg7. There are many ways to win it.
Parent - By MrKris (**) Date 2019-10-14 09:00
#20 Yes, most engines claim a win with black the exchange up but are meandering pointlessly indefinitely and will draw with black - "blockade effect".

[Event "?"]
[Site "?"]
[Date "2019.10.14"]
[Round "?"]
[White "?"]
[Black "Crystal-190824"]
[Result "0-1"]
[BlackElo "2200"]
[Time "01:16:50"]
[WhiteElo "2200"]
[TimeControl "120+2"]
[SetUp "1"]
[FEN "1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - 0 1"]
[Termination "normal"]
[PlyCount "71"]
[WhiteType "program"]
[BlackType "program"]

1. ... Rxb3+ {Crystal-190824 8th
i7-4770K} 2. Kxb3 Rb6+ 3. Kc2 Rb2+ 4. Kc1 Re2  5. Rd1 Rxe3 6. Rg1 Rc3+ 7. Bc2 Rxc4 8. Kd2 d5 9. Rb1 d4 10. Kd1
Kd6 11. Rb6+ Kc7 12. Rb3 Kc6 13. Rxa3 Rb4 14. Kc1 c4 15. Ra5 d3 16. a3 Rb7
17. Ba4+ Kd6 18. Ra6+ Kc5 19. Kd2 Rc7 20. Ra8 Kb6 21. Rb8+ Ka7 22. Rb1 c3+
23. Ke3 Rc8 24. Rc1 Kb6 25. Bb3 Ka5 26. Kd4 c2 27. Ke3 Rc3 28. Bf7 Rc6 29.
Bb3 Kb5 30. Kd2 Rc7 31. Ke3 Rd7 32. Bxc2 dxc2 33. a4+ Kxa4 34. Rxc2 Rd3+
35. Ke2 Rxg3 36. Rc7 Rh3 0-1

With multi-PV Crystal is the only one here that calls everything not the solution 0.00 - recognizing the blockade!
FEN: 1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - 0 1
i7-4770K simultaneously: 

Crystal-190824: 2th PV=6 best at bottom ---------------------------------------------------------------------------
 33/28  13:53   2,636,168k  3,164k   0.00  1. ... Kd8 2.Bc2 Kc7 3.Bd1 Ra5 4.Bc2
 33/22  13:53   2,636,168k  3,164k   0.00  1. ... Raa8 2.Bc2 Kf6 3.Bd1 Rd8 4.Kc2 Rac8 5.Kc3
 33/34  13:53   2,636,168k  3,164k   0.00  1. ... Ke8 2.Bc2 Ke7 3.Kd2 Rc8 4.Bd1 Rca8 5.Kc3 Rd8 6.Kc2 Rb8 7.Be2 Raa8 8.Bf1 Rd8 9.Be2
 33/34  13:53   2,636,168k  3,164k   0.00  1. ... Rb7 2.Bc2 Kd8 3.Bb1
 33/38  13:53   2,636,168k  3,164k   0.00  1. ... Kf6 2.Bc2 Rg8 3.Bb1
 34/86  13:53   2,636,168k  3,164k  +0.61  1. ... Rxb3+ 2.Kxb3 Rb6+ 3.Kc2 Rb2+ 4.Kc1 Re2 5.Rd1 Rxe3 6.Rg1 Rc3+ 7.Kd2 Rxc4 8.Bc2 d5 9.Rb1 d4 10.Kd1 Kd6 11.Rb6+ Kc7 12.Rb5 e3 13.Bb3 Rc3 14.Ke2 Rc1 15.Kd3 c4+ 16.Bxc4 e2 17.Kxe2 Rxc4 18.Kd3 Rc3+ 19.Kxd4 Rxg3 20.Ra5 Rg4 21.Ke5 Rxh4 22.Rxa3 Rg4 23.Rc3+ Kb6 24.Rb3+ Ka5 25.Rh3 h4 26.Rh1 Kb4 27.Rh3 Kc5 28.a4 Kb4 29.a5 Kb5 30.Rb3+ Ka6

Komodo-13.1: 2th PV=6 ---------------------------------------------------------------------------
 22/9  14:36   46k  52  +1.43  1. ... Rb7 2.Bc2 Rd7 3.Bd1 Rd8
 22/9  14:36   46k  52  +1.43  1. ... Ra5 2.Bc2 Rba8 3.Bd1 Rd8
 22/9  14:36   46k  52  +1.43  1. ... Raa8 2.Bc2 Rc8 3.Bd1 Rab8
 22/9  14:36   46k  52  +1.43  1. ... Ra7 2.Bc2 Rba8 3.Bb1 Rd8
 22/9  14:36   46k  52  +1.44  1. ... Rbb6 2.Bc2 Kd8 3.Rd1 Rb4
 22/9  14:36   46k  52  +1.44  1. ... Rab6 2.Bc2 Rb4 3.Bd1 Rg8

Stockfish_19100908c0: 2th PV=6 ---------------------------------------------------------------------------
 60/104  14:32   2,223,712k  2,548k  +2.72  1. ... Ra7 2.Bc2 Ke6 3.Bd1 Rh7 4.Be2 Rhh8 5.Rd1 Rbd8 6.Rd2 Rd7 7.Rd1 Rf7 8.Rd2 Rhh7 9.Rd5 Rc7 10.Rd1 Rhd7 11.Bf1 Ra7 12.Be2 Rab7 13.Rd5 Rb6 14.Bd1 Rc6 15.Bc2 Rg7 16.Rd1 Ra7 17.Rd2 Ke7 18.Bd1 Rb7 19.Rd5 Ra6 20.Rd2 Rb8 21.Be2 Rba8 22.Rd1 R8a7 23.Bf1 Ke6 24.Bg2 Rb7 25.Bh3 Rd7 26.Bf1 Kf6 27.Bh3 Ra8 28.Bf1 Rdd8 29.Kc2 Ke7 30.Kc3 Ra7 31.Bh3 Ke6 32.Rd5 Rg7 33.Bf1 Rgg8 34.Rd1 Ke7 35.Be2 Rh8 36.Rd2 Ke6 37.Rd1 Rd7 38.Bf1 Rb7 39.Be2 Rg8 40.Bf1 Rf7 41.Be2 Rb8 42.Bf1 Rff8 43.Rd2 Rh8 44.Rd1 Rhd8 45.Be2 Kf6 46.Rd2 Ra8 47.Bd1 Ra6 48.Rd5 Ke6 49.Rd2 d5 50.Be2 d4+ 51.exd4
 61/104  14:32   2,223,712k  2,548k  +2.72  1. ... Ke6 2.Bc2 Ra7 3.Bd1 Rh7 4.Be2 Rhh8 5.Rd1 Rbd8 6.Rd2 Ra8 7.Rd1 Rab8 8.Rd2 Rhc8 9.Bd1 Rd8 10.Be2 Rd7 11.Rd1 Rbd8 12.Bf1 Rf7 13.Rd2 Rdd7 14.Be2 Ra7 15.Bf1 Ra6 16.Bg2 Kf6 17.Bf1 Rb6 18.Be2 Rd7 19.Rd1 Rh7 20.Rd2 Rc6 21.Rd1 Re7 22.Rc1 Ke6 23.Rd1 Rb7 24.Rd2 Ra6 25.Rd1 Rc7 26.Rd5 Rca7 27.Rd1 Kd7 28.Rd2 Rc6 29.Bf1 Ke6 30.Rd1 Rcc7 31.Be2 Rh7 32.Rd5 Rac7 33.Rd1 Rhd7 34.Bf1 Rf7 35.Be2 Rh7 36.Rd2 Rc8 37.Bf1 Re8 38.Rd1 Rc7 39.Be2 Rb7 40.Rd2 Rb4 41.Rd1 Rb6 42.Bf1 Rc6 43.Be2 Rc7 44.Rd2 Rb8 45.Bd1 Rcc8 46.Bc2 Rb7 47.Bd1 Rf7 48.Be2 Re7 49.Rc2 d5 50.Rd2 d4+ 51.exd4
 61/104  14:32   2,223,712k  2,548k  +2.72  1. ... Ra5 2.Bc2 Kd7 3.Rd1 Ra7 4.Rd2 Rd8 5.Bd1 Ke7 6.Be2 Rh8 7.Bd1 Rb7 8.Bc2 Ke6 9.Bd1 Rd7 10.Be2 Rhd8 11.Rd1 Rg7 12.Rd2 Rdd7 13.Rd5 Rb7 14.Rd2 Rbf7 15.Rd5 Rd7 16.Rd1 Kf6 17.Bf1 Rd8 18.Be2 Ra7 19.Rd2 Raa8 20.Rd5 Rab8 21.Rd2 Rb6 22.Bd1 Rd7 23.Be2 Ra6 24.Rd1 Rc7 25.Rd2 Rb7 26.Rd1 Rc6 27.Rd5 Rb8 28.Rd1 Ke6 29.Rd2 Rcc8 30.Rd1 Rc7 31.Bf1 Rd8 32.Rd2 Rf7 33.Be2 Rdd7 34.Rd5 Kf6 35.Rd1 Rfe7 36.Bf1 Re8 37.Be2 Rdd8 38.Rd2 Rg8 39.Rd1 Rg7 40.Bf1 Rgd7 41.Rd5 Rh7 42.Be2 Rdd7 43.Rd2 Rhe7 44.Bd1 Re8 45.Bc2 Ke6 46.Rd5 Rf7 47.Rd1 Ra8 48.Rd5 Rh8 49.Rd2 Rb8 50.Rd1 d5 51.Rxd5 Rc7
 61/104  14:32   2,223,712k  2,548k  +2.72  1. ... Raa8 2.Bc2 Kd7 3.Bd1 Rc8 4.Rd2 Ke6 5.Bc2 Rd8 6.Rd5 Kf6 7.Rd1 Ra6 8.Rd2 Rda8 9.Bd1 Ke7 10.Bc2 R8a7 11.Rd1 Ke6 12.Rd5 Kf6 13.Rd1 Rg7 14.Rd2 Rc6 15.Bd1 Rg8 16.Be2 Rb6 17.Rd1 Rd8 18.Rd2 Rdb8 19.Rd1 Ke6 20.Rd2 R8b7 21.Rd1 Ra7 22.Rd2 Raa6 23.Bf1 Rc6 24.Bh3 Rc8 25.Bf1 Re8 26.Bh3 Rea8 27.Bg2 Kf6 28.Rd1 Rc6 29.Bf1 Rd8 30.Be2 Ra6 31.Rd2 Rc8 32.Bd1 Ke6 33.Be2 Rh8 34.Bf1 Rc6 35.Bg2 Rcc8 36.Rd1 Rhg8 37.Bf1 Kd7 38.Be2 Kc6 39.Bf1 Rh8 40.Be2 Rcg8 41.Bf1 Rh7 42.Rd2 Rd8 43.Rd5 Rg7 44.Be2 Kd7 45.Rd2 Rf8 46.Bf1 Ke6 47.Be2 Ra8 48.Bd1 Rh8 49.Bc2 Rd8 50.Bd1 d5 51.Be2 d4+ 52.exd4
 61/103  14:32   2,223,712k  2,548k  +2.72  1. ... Rc6 2.Bc2 Rcc8 3.Bd1 Kd7 4.Be2 Ra8 5.Rd1 Rc6 6.Rd5 Rac8 7.Rd1 Rd8 8.Rb1 Rc7 9.Rd1 Kc6 10.Rd5 Rg8 11.Rd1 Rb7 12.Rd2 Rd8 13.Rd5 Rdd7 14.Bf1 Rb6 15.Be2 Ra7 16.Bd1 Rbb7 17.Bc2 Rd7 18.Bd1 Rf7 19.Be2 Rac7 20.Rd2 Rfd7 21.Rd5 Rg7 22.Rd1 Rcd7 23.Rd5 Rh7 24.Bd1 Rdg7 25.Rd2 Rh8 26.Bc2 Rb8 27.Bd1 Rc7 28.Rd5 Rcc8 29.Bc2 Rb4 30.Rd2 Rd8 31.Rd5 Rd7 32.Bd1 Rf7 33.Be2 Re7 34.Rd1 Rb8 35.Rd2 Rbb7 36.Rd5 Rh7 37.Rd1 Rhd7 38.Rd5 Rb6 39.Bf1 Rg7 40.Rd2 Rbb7 41.Rd1 Rbd7 42.Rd5 Rgf7 43.Rd1 Rf8 44.Rd5 Rh8 45.Be2 Kc7 46.Rd2 Rdd8 47.Rd1 Rhf8 48.Bf1 Kc6 49.Be2 d5 50.cxd5+ Rxd5 51.Bb5+ Kd6
 61/104  14:32   2,223,712k  2,548k  +2.72  1. ... Rb7 2.Bc2 Ke6 3.Rd2 Ra8 4.Rd5 Rf7 5.Bd1 Rc7 6.Bc2 Raa7 7.Rd2 Rd7 8.Rd5 Kf6 9.Bd1 Rac7 10.Rd2 Rb7 11.Bc2 Ke6 12.Rd5 Rb8 13.Bd1 Rdd8 14.Bc2 Rdc8 15.Bb1 Kd7 16.Bc2 Re8 17.Rd1 Red8 18.Rd5 Kc6 19.Bd1 Rdc8 20.Rd2 Rh8 21.Rd5 Rhd8 22.Be2 Rd7 23.Bd1 Rc7 24.Rd2 Ra8 25.Rd5 Rcc8 26.Bc2 Ra7 27.Rd1 Rd7 28.Rd5 Rdd8 29.Bd1 Kd7 30.Be2 Ra8 31.Rd1 Kc6 32.Rd5 Kc7 33.Rd2 Ra6 34.Bd1 Kc6 35.Rd5 Ra7 36.Be2 Rf8 37.Rd2 Rff7 38.Rd1 Rad7 39.Bf1 Rg7 40.Rd5 Ra7 41.Be2 Ra6 42.Rd1 Ra8 43.Rd2 Rc8 44.Rd5 Rcg8 45.Rd2 Rf7 46.Bd1 Rd8 47.Rd5 Kd7 48.Bc2 Ke7 49.b4 cxb4+ 50.Kxb4 Ke6

Lc0-0.22.0_42872: 2th + RTX 2060 PV=6 ---------------------------------------------------------------------------
 11/37  14:36   38,041k  43k  +1.85  1. ... Raa8 2.Bc2 Rh8 3.Bd1 Rh7 4.Be2 Rd8 5.Bf1 Kf6 6.Be2 Ke6 7.Bd1 Rb7 8.Be2 Rc7 9.Bd1 Rg7 10.Be2
 11/37  14:36   38,041k  43k  +1.84  1. ... Rd8 2.Bc2 Ra7 3.Bd1 Kf6 4.Be2 Rh7 5.Bd1 Rdd7 6.Be2 Ke6 7.Bd1 Rh8 8.Bc2 Rb8 9.Bd1 Ke7 10.Be2 Kd8
 11/37  14:36   38,041k  43k  +1.85  1. ... Kd7 2.Bc2 Kc6 3.Bd1 Ra7 4.Be2 Rg7 5.Bf1 Rh8 6.Be2 Re7 7.Bd1 Rb7 8.Be2 Rd8 9.Bf1 Rbd7 10.Be2
 11/37  14:36   38,041k  43k  +1.85  1. ... Rh8 2.Bc2 Raa8 3.Bd1 Rh7 4.Be2 Rf8 5.Bf1 Rff7 6.Be2 Ke6 7.Kc2 Rh8 8.Kc3 Rd7 9.Kc2 Rhd8 10.Kc3
 11/37  14:36   38,041k  43k  +1.85  1. ... Ke6 2.Bc2 Ra7 3.Bd1 Rd8 4.Be2 Rh7 5.Bf1 Kf6 6.Be2 Ke6 7.Bd1 Rhh8 8.Be2 Rd7 9.Rd1 Rb8 10.Rd5 Ke7 11.Rd1
 11/37  14:36   38,041k  43k  +1.85  1. ... Ra7 2.Bc2 Ke6 3.Bd1 Rh7 4.Be2 Rd8 5.Bf1 Kf6 6.Be2 Ke6 7.Bd1 Rhd7 8.Be2 Rg8 9.Bf1 Ke7 10.Be2
Up Topic The Rybka Lounge / Test Positions / Hard-Talkchess-2020 set

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