Crystal 5 KWK

[peter]

Hi Eelco!

But now going back without all the in between moves analyzed, to after 1.e6 Crystal on its own would choose 1...Rf8 not 1...Kd4

Here's all I got so far, and indeed 1...Rf8 seems to be the harder reistance for one move (#26), at least I didn't manage to find a line as short as with 1...Kd4 (#25) till now. I just started with 1...Kd4 at first trials because that was the move in latest output- line of fishpov's Crystal- long time run, showing a #29 at the end.

[pgn][Event "CCC, CSS"]
[Site "?"]
[Date "2013.03.11"]
[Round "?"]
[White "seventh, step"]
[Black "to, heaven"]
[Result "1-0"]
[Annotator "Huntsman"]
[SetUp "1"]
[FEN "q6r/p1p1pNb1/PpPp1p2/1P1PPPp1/B5Pp/4k2P/1RK5/8 w - - 0 1"]
[PlyCount "51"]

1. e6 Rf8 (1... Rh7 $6 2. Kc3 Bh6 3. Bd1 Qg8 4. Re2+ Kf3 5. Kd4 Rxf7 6. Rb2+ Kg3 7. Rb3+ Kh2 8. Rf3 Rf8 9. Ke3 Kg2 10. Rf2+ Kxh3 11. Kf3 Qg6 12. Bc2 Qh5 13. Rg2 Rg8 14. Bd3 Rg7 15. Bf1 Qxg4+ 16. Rxg4+ Kh2 17. Kf2 Rh7 18. Be2 h3 19. Bf3 Rh8 20. Rg1 g4 21. Rh1#) (1... Kd4 $5 2. Rb4+ Ke3 3. Nxh8 Qxh8 4. Kb2 Qh7 5. Bc2 Kf3 6. Rb3+ Kf4 7. Kc3 Qh5 8. Bd1 Ke4 9. Kc4 Bh6 10. Bf3+ Ke5 11. Re3+ Kf4 12. Kd4 Kg3 13. Be4+ Kf2 14. Kd3 Qg6 15. Re2+ Kg3 16. Ke3 Kxh3 17. Kf3 Qh5 18. Rg2 Qxg4+ 19. Rxg4 Bf8 20. Bc2 Kh2 21. Kf2 Bg7 22. Bd1 Kh1 23. Bf3+ Kh2 24. Rg1 g4 25. Rh1#) (1... Qc8 $6 2. Kc3 Qf8 3. Nxh8 Qxh8 4. Kc4 Qh7 5. Bc2 Qh5 6. Rb3+ Kf4 7. Bd1 Ke4 8. Bf3+ Ke5 9. Re3+ Kf4 10. Kd4 Kg3 11. Be4+ Kf2 12. Rf3+ Ke2 13. Rb3 Kf2 14. Rb2+ Kg3 15. Rg2+ Kxh3 16. Bf3 Qh7 17. Ke3 Qxf5 18. gxf5 g4 19. Kf2 gxf3 20. Rxg7 Kh2 21. Rg4 Kh3 22. Re4 Kh2 23. Rxh4#) 2. Kc3 Rxf7 (2... Qe8 $5 3. Bd1 Ke4 4. Rd2 Qxf7 5. exf7 Rh8 6. Rd3 Bf8 7. Bf3+ Kf4 8. Bg2 e5 9. fxe6 f5 10. Rf3+ Ke4 11. Rf1+ Ke3 12. gxf5 Rh7 13. e7 Bxe7 14. Re1+ Kf4 15. Rxe7 Rxf7 16. Rxf7 Ke5 17. f6 g4 18. Rxc7 Kxf6 19. Rxa7 Ke5 20. c7 Kf4 21. c8=Q Kg3 22. Qxg4+ Kf2 23. Rf7+ Kg1 24. Rf1+ Kh2 25. Rh1#) (2... Qc8 $6 3. Bd1 Rxf7 4. Re2+ Kf3 5. Kd3 Qg8 6. Re3+ Kg2 7. Ke2 Rf8 8. Rf3 Qh7 9. Bc2 Qg8 10. Rf2+ Kg3 11. Kf1 Qh7 12. Be4 Qxf5 13. Bxf5 Rh8 14. Rd2 Kf3 15. Rd3+ Kf4 16. Ke2 Ke5 17. Ke3 Bh6 18. Rd4 Rh7 19. Kd3 Bf8 20. Kc4 Bh6 21. Re4#) 3. Bd1 Qh8 (3... Qg8 $5 4. Re2+ Kf3 5. Rd2+ Kg3 6. Rd3+ Kh2 7. Kd2 Qh7 8. Re3 Qxf5 9. gxf5 g4 10. exf7 g3 11. Bf3 g2 12. Bxg2 Kxg2 13. Rxe7 Kxh3 14. Rxc7 Kg4 15. Rc8 Kf3 16. f8=Q Bxf8 17. Rxf8 h3 18. c7 h2 19. Rh8 h1=R 20. Rxh1 Kf2 21. c8=Q Kf3 22. Qc4 Kf2 23. Qf1+ Kg3 24. Ke3 Kg4 25. Qf4#) 4. Re2+ Kf3 5. Rd2+ Ke4 6. Rd4+ Ke3 7. Rd3+ Kf2 8. Kd2 Qh7 9. Rf3+ Kg2 10. Re3 Qxf5 11. gxf5 g4 12. exf7 gxh3 13. Bf3+ Kf2 14. Bh1 Bf8 15. Kd3 e6 16. dxe6 Be7 17. f8=Q Bxf8 18. e7 Bxe7 19. Rxe7 Kg3 20. Rxc7 Kg4 21. Rg7+ Kf4 22. c7 Ke5 23. c8=Q d5 24. Qe6+ Kf4 25. Qxd5 h2 26. Qe4# 1-0[/pgn]

[fishpov]

Fortress Kd1 !
[fen]7r/p3k3/2p5/1pPp4/3P4/PP4P1/3P1PB1/2K5 w - - 0 1[/fen]
Crystal 5 not able to find after 3 hours get stuck on try Kd1 and 12h after always stuck and not played

Analysis by Sting 28 (based on Stockfish 2.1.1) 64bit:
....
1.Bf3 Rf8 2.Bd1 Rxf2 3.Bh5 Rh2 4.g4 Rh3 5.Kc2 Rg3
-+ (-2.10) Depth: 37 00:12:49 10602MN
1.Kd1
-+ (-1.97 ++) Depth: 38 00:13:27 11158MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
-+ (-1.85 ++) Depth: 38 00:13:28 11184MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
-+ (-1.67 ++) Depth: 38 00:13:31 11220MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
-/+ (-1.40 ++) Depth: 38 00:13:38 11334MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
-/+ (-0.99 ++) Depth: 38 00:13:44 11439MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
=/+ (-0.38 ++) Depth: 38 00:14:00 11664MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
= (0.00) Depth: 38 00:14:21 11994MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
= (-0.08 --) Depth: 39 00:14:31 12127MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
= (-0.16 --) Depth: 39 00:14:34 12169MN
1.Kd1 Rh2 2.Bf1 Rxf2 3.Bd3 Rg2 4.Kc2 Rxg3 5.Kc3 Kd7 6.a4 bxa4 7.bxa4 Rg8 8.Be2 Ke7 9.a5 Rg1 10.d3 Rg3 11.Bd1 Rh3 12.Ba4 Rh6 13.Kb4 Rg6 14.Kc3 Kd7 15.Kb4 Kc7 16.Kc3 Rg3 17.Kb4 Rxd3 18.Bd1 Rxd1 19.Kc3 Kd7 20.Kb4 Rxd4+ 21.Kb3 Ra4 22.Kxa4 Ke6
= (-0.28 --) Depth: 39 00:14:55 12433MN


(, 27.11.2022)

[Dariusz]

Fortress Kd1 !
[fen]7r/p3k3/2p5/1pPp4/3P4/PP4P1/3P1PB1/2K5 w - - 0 1[/fen]
Crystal 5 not able to find after 3 hours get stuck on try Kd1 and 12h after always stuck and not played

Analysis by Sting 28 (based on Stockfish 2.1.1) 64bit:
....
1.Bf3 Rf8 2.Bd1 Rxf2 3.Bh5 Rh2 4.g4 Rh3 5.Kc2 Rg3
-+ (-2.10) Depth: 37 00:12:49 10602MN
1.Kd1
-+ (-1.97 ++) Depth: 38 00:13:27 11158MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
-+ (-1.85 ++) Depth: 38 00:13:28 11184MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
-+ (-1.67 ++) Depth: 38 00:13:31 11220MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
-/+ (-1.40 ++) Depth: 38 00:13:38 11334MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
-/+ (-0.99 ++) Depth: 38 00:13:44 11439MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
=/+ (-0.38 ++) Depth: 38 00:14:00 11664MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
= (0.00) Depth: 38 00:14:21 11994MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
= (-0.08 --) Depth: 39 00:14:31 12127MN
1.Kd1 Rh2 2.Ke2 Rxg2 3.Kf1 Rh2 4.Kg1 Rh6 5.f3 Kf6 6.Kg2 Kf5 7.Kg1 Kg5 8.Kg2 Rh8 9.Kg1 Rh6
= (-0.16 --) Depth: 39 00:14:34 12169MN
1.Kd1 Rh2 2.Bf1 Rxf2 3.Bd3 Rg2 4.Kc2 Rxg3 5.Kc3 Kd7 6.a4 bxa4 7.bxa4 Rg8 8.Be2 Ke7 9.a5 Rg1 10.d3 Rg3 11.Bd1 Rh3 12.Ba4 Rh6 13.Kb4 Rg6 14.Kc3 Kd7 15.Kb4 Kc7 16.Kc3 Rg3 17.Kb4 Rxd3 18.Bd1 Rxd1 19.Kc3 Kd7 20.Kb4 Rxd4+ 21.Kb3 Ra4 22.Kxa4 Ke6
= (-0.28 --) Depth: 39 00:14:55 12433MN


(, 27.11.2022)

https://www.chessengeria.com/post/sting-sf-28-ai