Test Position: Baburin-Adianto, Liechtenstein 1993

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MMoisan
Posts: 70
Joined: Thu Sep 13, 2012 1:42 am

Test Position: Baburin-Adianto, Liechtenstein 1993

Post by MMoisan »

[D]q1r1k2r/1b3pp1/p3pn2/P1b5/1pN1P2p/3B1P2/1P2Q1PP/R1B2R1K b k - 0 20

Best move is 20...Nh5! Very nice! Especially with the follow-up 23...Ke7!!

[D]q1r1k2r/1b3pp1/p3p3/P1b5/1pN1P3/3BBPp1/1P2Q1P1/R4RK1 b k - 0 23


Now the threat 24...Rh1+! 25.Kxh1 Rh8+ 26. Kg1 Rh1+! 27.Kxh1 Qh8+ 28. Kg1 and Qh2 mate is unstoppable!

Code: Select all

[Event "Liechtenstein op 11th"]
[Site "Liechtenstein"]
[Date "1993.??.??"]
[Round "9"]
[White "Baburin, Alexander"]
[Black "Adianto, Utut"]
[Result "0-1"]
[ECO "D26"]
[WhiteElo "2530"]
[BlackElo "2510"]
[PlyCount "48"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "LIE"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 a6 5. Bxc4 b5 6. Bd3 Bb7 7. O-O e6 8. a4
b4 9. Nbd2 Nbd7 10. Nb3 c5 11. dxc5 Nxc5 12. Nxc5 Bxc5 13. Qc2 Rc8 14. Qe2 Qb6
15. e4 h6 16. a5 Qa7 17. Nd2 Qa8 18. Kh1 h5 19. f3 h4 20. Nc4 Nh5 21. Be3 Ng3+
22. hxg3 hxg3+ 23. Kg1 Ke7 24. Qe1 Rh1+ 0-1
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Test Position: Baburin-Adianto, Liechtenstein 1993

Post by Vinvin »

MMoisan wrote:q1r1k2r/1b3pp1/p3pn2/P1b5/1pN1P2p/3B1P2/1P2Q1PP/R1B2R1K b k - 0 20

Best move is 20...Nh5! Very nice! Especially with the follow-up 23...Ke7!!

[D]q1r1k2r/1b3pp1/p3p3/P1b5/1pN1P3/3BBPp1/1P2Q1P1/R4RK1 b k - 0 23


Now the threat 24...Rh1+! 25.Kxh1 Rh8+ 26. Kg1 Rh1+! 27.Kxh1 Qh8+ 28. Kg1 and Qh2 mate is unstoppable!

Code: Select all

[Event "Liechtenstein op 11th"]
[Site "Liechtenstein"]
[Date "1993.??.??"]
[Round "9"]
[White "Baburin, Alexander"]
[Black "Adianto, Utut"]
[Result "0-1"]
[ECO "D26"]
[WhiteElo "2530"]
[BlackElo "2510"]
[PlyCount "48"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "LIE"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 a6 5. Bxc4 b5 6. Bd3 Bb7 7. O-O e6 8. a4
b4 9. Nbd2 Nbd7 10. Nb3 c5 11. dxc5 Nxc5 12. Nxc5 Bxc5 13. Qc2 Rc8 14. Qe2 Qb6
15. e4 h6 16. a5 Qa7 17. Nd2 Qa8 18. Kh1 h5 19. f3 h4 20. Nc4 Nh5 21. Be3 Ng3+
22. hxg3 hxg3+ 23. Kg1 Ke7 24. Qe1 Rh1+ 0-1
Nice positions !
SF announce mate in 12 with Ke7!

Code: Select all

Stockfish_15090721_x64_modern:
...
 17/32	00:00	 3.121k	7.822k	+2,57	23. ... Rc6 24.Rfd1 Qd8 25.Bxc5 Rxc5 26.Qe3 Rc6 27.Ne5 Qh4 28.Kf1 Qh1+ 29.Qg1 Qxg1+ 30.Kxg1 Rc5 31.Nc4 Ke7 32.Ne3 Rch5 33.Kf1 Rh1+ 34.Ke2 Rxd1 35.Rxd1 Rh5 36.Nf1 Rxa5 37.Nxg3
 18/32	00:00	 3.456k	7.889k	+2,58	23. ... Rc6 24.Rfd1 Qd8 25.Bxc5 Rxc5 26.Qe3 Rc6 27.Ne5 Qh4 28.Kf1 Qh1+ 29.Qg1 Rc5 30.Nc4 Bc6 31.Qxh1 Rxh1+ 32.Ke2 Rxd1 33.Rxd1 Ke7 34.Rc1 Bb5 35.f4
 19/32	00:00	 5.796k	8.280k	+2,64	23. ... Rc6 24.Rfd1 Qd8 25.Bxc5 Rxc5 26.Qe3 Qh4 27.Kf1 Qh1+ 28.Qg1 Bc6 29.Ke2 Qxg1 30.Rxg1 Rhh5 31.Rgc1 Ke7 32.Nb6 Rxc1 33.Rxc1 Be8
 20/33	00:01	 9.338k	8.528k	+2,72	23. ... Rc6 24.Rfd1 Qd8 25.Bxc5 Rxc5 26.Qe3 Qh4 27.Kf1 Qh1+ 28.Qg1 Ke7 29.Ne3 f5 30.Ra4 Bc6 31.Rxb4 Qxg1+ 32.Kxg1 f4 33.Rc4 Rch5 34.Kf1 Bd7 35.Nc2 Rxa5 36.Rc7 Kd6 37.Rb7 Rh1+ 38.Ke2
 21/41	00:02	 25.725k	8.920k	-23,26	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Bc4 Rcd8 29.Bxe6 fxe6 30.Rd1 Be3+ 31.Ke2 Rxd1 32.Kxd1 Qd6+ 33.Kc2 Qd2+ 34.Kb3 Rh5 35.g4 Rxa5 36.Nd5+ exd5
 22/41+	00:03	 26.911k	8.902k	-23,29	23. ... Ke7 24.Qd2
 22/41-	00:03	 27.027k	8.891k	-23,45	23. ... Ke7
 22/41-	00:03	 30.157k	8.962k	-25,67	23. ... Ke7
 22/41+	00:03	 31.355k	8.997k	-24,82	23. ... Ke7 24.Qd2
 22/41-	00:03	 32.168k	9.016k	-26,06	23. ... Ke7
 22/41	00:04	 38.076k	9.081k	-27,53	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Bb5 Rcd8 29.Bd7 Qf4 30.Nc4 Rxd7 31.b3 Qg5 32.Rf1 Be3+ 33.Ke2 Qxg2+ 34.Kxe3 Qxf1 35.Kf4 Qc1+ 36.Ne3 g5+ 37.Kxg5 Qxe3+ 38.Kg4 Rg8+ 39.Kh4 Qxf3
 23/44-	00:04	 39.195k	9.077k	-27,59	23. ... Ke7
 23/44-	00:04	 39.427k	9.078k	-27,65	23. ... Ke7
 23/44-	00:04	 40.419k	9.065k	-28,41	23. ... Ke7
 23/44+	00:04	 40.759k	9.068k	-28,12	23. ... Ke7 24.Qd2
 23/44-	00:04	 41.426k	9.061k	-28,53	23. ... Ke7
 23/44-	00:04	 42.815k	9.054k	-29,58	23. ... Ke7
 23/44	00:05	 45.994k	9.050k	-30,31	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Bb5 Rcd8 29.Rd1 Qf4 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qxb2 33.Kf2 Qd4+ 34.Kg3 Qe3 35.Nd5+ exd5 36.Bb5 axb5 37.a6 Bxa6 38.e5 b3 39.Kg4 b2
 24/44-	00:05	 47.859k	9.073k	-30,37	23. ... Ke7
 24/44-	00:05	 47.990k	9.072k	-30,44	23. ... Ke7
 24/44-	00:05	 48.468k	9.071k	-30,88	23. ... Ke7
 24/44+	00:05	 48.893k	9.076k	-30,31	23. ... Ke7 24.Qd2
 24/44-	00:05	 49.513k	9.078k	-30,96	23. ... Ke7
 24/44-	00:05	 53.259k	9.103k	-34,28	23. ... Ke7
 24/44+	00:05	 54.233k	9.101k	-32,34	23. ... Ke7 24.Qd2
 24/44-	00:06	 54.669k	9.098k	-34,86	23. ... Ke7
 24/44+	00:06	 55.100k	9.100k	-31,17	23. ... Ke7 24.Qd2
 24/44-	00:06	 55.446k	9.094k	-36,00	23. ... Ke7
 24/44-	00:06	 56.911k	9.115k	-47,93	23. ... Ke7
 24/44+	00:06	 56.951k	9.111k	-35,84	23. ... Ke7 24.Qd2
 24/44-	00:06	 57.722k	9.115k	-52,30	23. ... Ke7
 24/44+	00:06	 57.775k	9.111k	-30,46	23. ... Ke7 24.Qd2
 24/44-	00:06	 58.422k	9.106k	-61,61	23. ... Ke7
 24/44	00:06	 59.668k	9.103k	-M19	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Rd1 Qf4 29.Nxc8+ Bxc8 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qxb2 33.Kf2 Qd4+ 34.Kg3 Qe3 35.e5 Qxe2 36.Kf4 Qd2+ 37.Kg4 Qxg2+ 38.Kf4 Qd2+ 39.Kg4 b3 40.Kg3 Qh2+ 41.Kg4 Qh4+
 25/44+	00:06	 59.893k	9.101k	-65,48	23. ... Ke7 24.Qd2
 25/44+	00:06	 59.912k	9.100k	-65,38	23. ... Ke7 24.Qd2
 25/44+	00:06	 59.979k	9.097k	-55,40	23. ... Ke7 24.Qd2
 25/44-	00:06	 60.017k	9.098k	-59,79	23. ... Ke7
 25/44+	00:06	 60.020k	9.097k	-55,40	23. ... Ke7 24.Qd2
 25/44-	00:06	 60.029k	9.097k	-58,93	23. ... Ke7
 25/44+	00:06	 60.032k	9.097k	-55,40	23. ... Ke7 24.Qd2
 25/44-	00:06	 60.053k	9.093k	-58,56	23. ... Ke7
 25/44+	00:06	 60.055k	9.094k	-55,40	23. ... Ke7 24.Qd2
 25/44-	00:06	 60.060k	9.093k	-58,95	23. ... Ke7
 25/44+	00:06	 60.062k	9.093k	-53,79	23. ... Ke7 24.Qd2
 25/44-	00:06	 60.070k	9.093k	-60,72	23. ... Ke7
 25/44+	00:06	 60.073k	9.092k	-39,08	23. ... Ke7 24.Qd2
 25/44-	00:06	 60.141k	9.092k	-64,95	23. ... Ke7
 25/44+	00:06	 60.144k	9.092k	-37,49	23. ... Ke7 24.Qd2
 25/44-	00:06	 60.503k	9.091k	-71,90	23. ... Ke7
 25/44	00:06	 60.939k	9.098k	-M19	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Rd1 Qf4 29.Nxc8+ Bxc8 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qxb2 33.Kf2 Qd4+ 34.Kg3 Qe3 35.e5 Qxe2 36.Kf4 Qd2+ 37.Kg4 Qxg2+ 38.Kf4 Qd2+ 39.Kg4 b3 40.Kg3
 26/44+	00:06	 61.663k	9.099k	-76,55	23. ... Ke7 24.Qd2
 26/44+	00:06	 61.852k	9.097k	-67,03	23. ... Ke7 24.Qd2
 26/44-	00:06	 61.941k	9.098k	-100,18	23. ... Ke7
 26/44-	00:06	 62.300k	9.094k	-M29	23. ... Ke7
 26/44	00:06	 63.575k	9.116k	-M18	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Rd1 Qf4 29.Nxc8+ Bxc8 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qxb2 33.Kf2 Qd4+ 34.Kg3 Qe3 35.e5 Qxe2 36.Kf4 Qd2+ 37.Kg4 f5+ 38.exf6+ gxf6 39.Kg3 Qe1+ 40.Kf4 e5+
 27/44	00:07	 64.421k	9.117k	-M17	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Rd1 Qf4 29.Nxc8+ Bxc8 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qxb2 33.Kf2 Qd4+ 34.Kg3 Qe3 35.e5 Qxe2 36.Kf4 g5+ 37.Kxg5 Qxe5+ 38.Kg4 f5+ 39.Kg5 Qg3+
 28/44	00:07	 66.251k	9.148k	-M15	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Rd1 Qf4 29.Nxc8+ Bxc8 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qxb2 33.Kf2 Qd4+ 34.Kg3 Qe3 35.e5 g5 36.Bd1 Qe1+ 37.Kg4 Qh4+
 29/44	00:07	 68.111k	9.155k	-M15	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Rd1 Qf4 29.Nxc8+ Bxc8 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qxb2 33.Kf2 Qd4+ 34.Kg3 Qe3 35.e5 g5 36.Bd1 Qe1+ 37.Kg4 Qh4+
 30/44	00:07	 71.265k	9.172k	-M15	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Rd1 Qf4 29.Nxc8+ Bxc8 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qxb2 33.Kf2 Qd4+ 34.Kg3 Qe3 35.e5 g5 36.Bd1 Qe1+ 37.Kg4 Qh4+
 31/44	00:08	 74.765k	9.195k	-M15	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Rd1 Qf4 29.Nxc8+ Bxc8 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qxb2 33.Kf2 Qd4+ 34.Kg3 Qe3 35.e5 g5 36.Bd1 Qe1+ 37.Kg4 Qh4+
 32/44	00:08	 82.582k	9.340k	-M14	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Rd1 Qf4 29.Nxc8+ Bxc8 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qg1 33.e5 g5 34.f4 Qe3+ 35.Bf3 Qe1+ 36.Kg4 Qh4+
 33/44	00:09	 90.307k	9.434k	-M14	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 gxf2+ 27.Kxf2 Qb8 28.Rd1 Qf4 29.Nxc8+ Bxc8 30.Rxd2 Qxd2+ 31.Be2 Qd4+ 32.Kg3 Qg1 33.e5 g5 34.f4 Qe3+ 35.Bf3 Qe1+ 36.Kg4 Qh4+
 34/44	00:11	 106.577k	9.581k	-M13	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 Qb8 27.Rd1 Be3 28.Kf1 Bxf2 29.Bc4 Qf4 30.Rd7+ Kf8 31.Rxf7+ Kxf7 32.Bxe6+ Kxe6 33.Nc4 Rxc4 34.Ke2 Qe3+ 35.Kd1 Rc1+
 35/44	00:12	 116.322k	9.643k	-M13	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 Qb8 27.Rd1 Be3 28.Kf1 Bxf2 29.Bc4 Qf4 30.Rd7+ Kf8 31.Rxf7+ Kxf7 32.Bxe6+ Kxe6 33.Nc4 Rxc4 34.Ke2 Qe3+ 35.Kd1 Rc1+
 36/44	00:12	 125.577k	9.719k	-M13	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 Qb8 27.Rd1 Be3 28.Kf1 Bxf2 29.Bc4 Qf4 30.Rd7+ Kf8 31.Rxf7+ Kxf7 32.Bxe6+ Kxe6 33.Nc4 Rxc4 34.Ke2 Qe3+ 35.Kd1 Rc1+
 37/44	00:15	 154.325k	9.876k	-M12	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 Qb8 27.Rd1 Rc2 28.Bxc2 Qf4 29.Rdxd2 Qh6 30.Kf1 Qe3 31.Rd7+ Ke8 32.Rd8+ Kxd8 33.Rd2+ Qxd2 34.Kg1 Qf2+
 38/44	00:16	 167.000k	9.920k	-M12	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 Qb8 27.Rd1 Rc2 28.Bxc2 Qf4 29.Rdxd2 Qh6 30.Kf1 Qe3 31.Rd7+ Ke8 32.Rd8+ Kxd8 33.Rd2+ Qxd2 34.Kg1 Qf2+
 39/44	00:19	 192.303k	10.035k	-M12	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 Qb8 27.Rd1 Rc2 28.Bxc2 Qf4 29.Rdxd2 Qh6 30.Kf1 Qe3 31.Rd7+ Ke8 32.Rd8+ Kxd8 33.Rd2+ Qxd2 34.Kg1 Qf2+
 40/44	00:20	 208.614k	10.098k	-M12	23. ... Ke7 24.Qd2 Bxe3+ 25.Rf2 Bxd2 26.Nb6 Qb8 27.Rd1 Rc2 28.Bxc2 Qf4 29.Rdxd2 Qh6 30.Kf1 Qe3 31.Rd7+ Ke8 32.Rd8+ Kxd8 33.Rd2+ Qxd2 34.Kg1 Qf2+
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jdart
Posts: 4366
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Test Position: Baburin-Adianto, Liechtenstein 1993

Post by jdart »

IMO this is not a great test position because you can get Nh4 as the best move w/o seeing it is winning. Arasan dev version, 4 cores:

Code: Select all

Arasan 18.0 Copyright 1994-2015 by Jon Dart. All Rights Reserved.
test \chess\temp\nh4.epd 600 -v
found 5-man Nalimov tablebases in directory c:\chess\tb
 bm Nh4
1       0.00    Qxh3    -6.14   51
1       0.00    Bb5     -2.85   68
1       0.00    Ng5     -2.45   238
1       0.01    Bb3     -2.35   357
1       0.01    Bb3     -2.35   1469
2       0.01    Bb3!    -2.16   1622
2       0.01    Ra1!    -1.60   2540
2       0.01    Bb3     -2.04   2846
2       0.01    Bb3     -2.04   6019
3       0.02    Ng5     -2.07   6716
3       0.02    Ng5     -2.07   8952
4       0.02    Ng5     -2.13   10346
5       0.02    Ng5!    -1.95   11009
5       0.03    Ng5     -1.84   12954
6       0.03    Be2     -1.77   21726
6       0.03    Be2     -1.77   21726
7       0.04    Be2!    -1.58   36465
7       0.04    Be2     -1.79   42877
8       0.05    Be2!    -1.60   68224
8       0.07    Be2     -1.72   127521
9       0.09    Be2!    -1.53   169426
9       0.14     --     -1.91   327933
9       0.15    Be2     -1.67   350405
10      0.18     --     -1.86   432752
10      0.22    Be2     -2.07   549913
11      0.23    Be2!    -1.88   569769
11      0.26    Be2!    -1.51   637531
11      0.32    Be2     -1.81   818729
12      0.37    Be2     -1.71   1019081
13      0.55    Nh4!    -1.52   1729766
13      0.61    Nh4!    -1.14   1953027
13      0.81    Nh4!    -0.39   2543981
13      0.94    Nh4     +0.00   2944652
14      1.21    Nh4     +0.00   3802333
15      1.30    Nh4     +0.00   4068595
16      1.46    Nh4     +0.00   4664841
17      2.45    Nh4     +0.00   8621437
18      3.54     --     -0.19   12859113
18      4.05     --     -0.56   15141917
18      4.55    Nh4     -0.72   17326657
19      4.72    Nh4!    -0.53   17946919
19      5.97    Nh4     -0.52   23165324
20      7.16    Nh4!    -0.34   27999512
20      8.45    Nh4     +0.00   33793199
21      12.25   Nh4     +0.00   49845783
22      16.85   Nh4     +0.00   69758072
23      23.02   Nh4     +0.00   96525734
24      47.53   Nh4!    +0.19   197527749
24      77.52   Nh4     +0.02   320873837
25      114.58  Nh4!    +0.21   473559983
25      145.65  Nh4!    +0.58   596695998
25      308.27  Nh4     +0.67   1235981684
26      405.08  Nh4     +0.85   1619089976
27      420.30  Nh4!    +1.04   1679204883
27      486.47  Nh4!    +1.42   1937212234
3.97M nodes/second.
0 tablebase probes, 0 tablebase hits
113488 splits, average thread usage=3.94
result: Nh4     score: +1.42            ++ solved in 0.55 sec. (1.73M nodes
Nh4 Rbe8

solution times:
         0      1      2      3      4      5      6      7      8      9

   0 |         0.55

correct : 1/1
nodes to solution : 1.73M
depth to solution : 12.00
time to solution  : 0.55 sec.
test complete
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Test Position: Baburin-Adianto, Liechtenstein 1993

Post by kgburcham »

Jon what position
no chess program was born totally from one mind. all chess programs have many ideas from many minds.
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jdart
Posts: 4366
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Test Position: Baburin-Adianto, Liechtenstein 1993

Post by jdart »

The first one:

[D] q1r1k2r/1b3pp1/p3pn2/P1b5/1pN1P2p/3B1P2/1P2Q1PP/R1B2R1K b k -
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Test Position: Baburin-Adianto, Liechtenstein 1993

Post by kgburcham »

you are showing Nh4
no chess program was born totally from one mind. all chess programs have many ideas from many minds.
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Test Position: Baburin-Adianto, Liechtenstein 1993

Post by kgburcham »

jdart wrote:IMO this is not a great test position because you can get Nh4 as the best move w/o seeing it is winning. Arasan dev version, 4 cores:

Code: Select all

Arasan 18.0 Copyright 1994-2015 by Jon Dart. All Rights Reserved.
test \chess\temp\nh4.epd 600 -v
found 5-man Nalimov tablebases in directory c:\chess\tb
 bm Nh4

21      12.25   Nh4     +0.00   49845783
22      16.85   Nh4     +0.00   69758072
23      23.02   Nh4     +0.00   96525734
24      47.53   Nh4!    +0.19   197527749
24      77.52   Nh4     +0.02   320873837
25      114.58  Nh4!    +0.21   473559983
25      145.65  Nh4!    +0.58   596695998
25      308.27  Nh4     +0.67   1235981684
26      405.08  Nh4     +0.85   1619089976
27      420.30  Nh4!    +1.04   1679204883
27      486.47  Nh4!    +1.42   1937212234
3.97M nodes/second.
0 tablebase probes, 0 tablebase hits
113488 splits, average thread usage=3.94
result: Nh4     score: +1.42            ++ solved in 0.55 sec. (1.73M nodes
Nh4 Rbe8
[D] q1r1k2r/1b3pp1/p3pn2/P1b5/1pN1P2p/3B1P2/1P2Q1PP/R1B2R1K b k -


Engine: Arasan 18.0 (2048 MB)
by Jon Dart

26.01 1:40 +0.49 1...Qb8 2.e5 Nd5 3.Bd2 Be7 4.h3 Rd8 5.Rfd1 Rd7 6.Bc2 Bc6 7.Rac1 Rd8 8.Bd3 Ba4 9.Re1 Bb5 10.Red1 (831.200.431) 8309
27.01 2:41 +0.31++ 1...Nh5 (1.370.829.969) 8478
27.01 3:00 -0.06++ 1...Nh5 2.Be3 (1.525.402.690) 8450
27.01 3:12 -0.81++ 1...Nh5 2.Be3 (1.622.792.936) 8446
27.01 3:15 -2.31++ 1...Nh5 2.Be3 (1.651.691.627) 8441
27.01 10:39 -2.68 1...Nh5 2.g4 hxg3 3.h3 e5 4.Kg2 Qb8 5.Rh1 Rc6 6.Bd2 O-O 7.Nb6 Rd8 8.Nd5 Rcd6 9.Bc4 Rg6 10.Rhd1 Qc8 11.Bd3 Re8 12.Nb6 Qd8 13.Bxa6 Bxa6 14.Qxa6 Qh4 (5.451.423.860) 8525
28.01 11:29 -2.68 1...Nh5 2.g3 (5.864.311.141) 8502
29.01 11:39 -2.87++ 1...Nh5 2.g3 (5.941.093.800) 8496
29.01 12:12 -2.76 1...Nh5 2.g3 hxg3 3.h3 e5 4.Kg2 Qb8 5.Rh1 Rc6 6.Bd2 O-O 7.Nb6 Rd6 8.Nd5 Qd8 9.Bc4 f5 10.Rhf1 Qh4 11.Rac1 Kh8 12.Bb3 Rc8 13.Bc4 g6 14.Rfd1 Nf4+ (6.227.884.556) 8499
30.01 14:28 -2.84 1...Nh5 2.g3 hxg3 3.h3 e5 4.Kg2 Qb8 5.Bc2 O-O 6.Rd1 Qc7 7.Bd2 Bd4 8.Bd3 Rfd8 9.Rac1 Qd7 10.Bg5 Qe6 11.Nb6 Bxb6 12.axb6 Rxc1 13.Bxc1 Qxb6 14.Be3 Nf4+ (7.437.255.903) 8559
31.01 15:26 -2.66 1...Nh5 2.g3 hxg3 3.h3 e5 4.Kg2 Qb8 5.Bc2 O-O 6.Rd1 Qc7 7.Bd2 Bd4 8.Bd3 Rfd8 9.Rac1 Qd7 10.Bg5 Qe6 11.Nb6 Bxb6 12.axb6 Rxc1 13.Bxc1 Qxb6 14.Be3 Nf4+ (7.911.566.444) 8540
no chess program was born totally from one mind. all chess programs have many ideas from many minds.
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User avatar
Ajedrecista
Posts: 1966
Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

Re: Test Position: Baburin-Adianto, Liechtenstein 1993.

Post by Ajedrecista »

Hello Marc:
MMoisan wrote:[D]q1r1k2r/1b3pp1/p3p3/P1b5/1pN1P3/3BBPp1/1P2Q1P1/R4RK1 b k - 0 23


Now the threat 24...Rh1+! 25.Kxh1 Rh8+ 26. Kg1 Rh1+! 27.Kxh1 Qh8+ 28. Kg1 and Qh2 mate is unstoppable!

[pgn][Event "Liechtenstein op 11th"]
[Site "Liechtenstein"]
[Date "1993.??.??"]
[Round "9"]
[White "Baburin, Alexander"]
[Black "Adianto, Utut"]
[Result "0-1"]
[ECO "D26"]
[WhiteElo "2530"]
[BlackElo "2510"]
[PlyCount "48"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "LIE"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 a6 5. Bxc4 b5 6. Bd3 Bb7 7. O-O e6 8. a4
b4 9. Nbd2 Nbd7 10. Nb3 c5 11. dxc5 Nxc5 12. Nxc5 Bxc5 13. Qc2 Rc8 14. Qe2 Qb6
15. e4 h6 16. a5 Qa7 17. Nd2 Qa8 18. Kh1 h5 19. f3 h4 20. Nc4 Nh5 21. Be3 Ng3+
22. hxg3 hxg3+ 23. Kg1 Ke7 24. Qe1 Rh1+ 0-1

[/pgn]
A Damiano's mate between players of more than 2500 Elo! It is not a novelty at all, as you know:

http://gallica.bnf.fr/ark:/12148/bpt6k58834f/f34.image

From the Pedro Damiano's book Questo libro e da imparare giocare a scachi et de le partite of year 1512. Link courtesy of the BnF (Bibliothèque nationale de France). Please note the lack of white king on the chessboard.

Regards from Spain.

Ajedrecista.
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Test Position: Baburin-Adianto, Liechtenstein 1993

Post by Vinvin »

jdart wrote: ↑Sun Sep 13, 2015 5:30 am The first one:

[D] q1r1k2r/1b3pp1/p3pn2/P1b5/1pN1P2p/3B1P2/1P2Q1PP/R1B2R1K b k -
That Still a good position in 2019 : Nh5! Threatening the sacrifice Ng3+!
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User avatar
Ajedrecista
Posts: 1966
Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

Re: Test Position: Baburin-Adianto, Liechtenstein 1993.

Post by Ajedrecista »

Hello Vincent:
Vinvin wrote: ↑Thu Aug 15, 2019 6:45 pm
jdart wrote: ↑Sun Sep 13, 2015 5:30 am The first one:

[D] q1r1k2r/1b3pp1/p3pn2/P1b5/1pN1P2p/3B1P2/1P2Q1PP/R1B2R1K b k -
That Still a good position in 2019 : Nh5! Threatening the sacrifice Ng3+!
It is a good position for sure! Even at this position:

[d]q1r1k2r/1b3pp1/p3p3/P1b5/1pN1P2p/3BBPn1/1P2Q1PP/R4R1K w k - 4 22

It is not often seen a jump in eval of more than 14 pawns after one full ply (with depth > 20) and even less in a real game... I mean, not a composition problem:

Code: Select all

FEN: q1r1k2r/1b3pp1/p3p3/P1b5/1pN1P2p/3BBPn1/1P2Q1PP/R4R1K w k - 3 3 

Stockfish_10_x32:
[...]
 20/37	00:06	   3.881.409	693.728	+4,21	h2xg3 h4xg3+ Kh1g1 Rc8c6 Rf1d1 Qa8d8 Be3xc5 Rc6xc5 Qe2e3 Qd8h4 Kg1f1 Qh4h1+ Qe3g1 Ke8e7 Nc4e3 f7f5 Qg1xh1 Rh8xh1+ Kf1e2 Rh1xd1 Ke2xd1 f5f4 Ne3c2 Rc5h5 Kd1d2 Rh5h2 Bd3f1 b4b3 Nc2b4 e6e5 Kd2c3
 21/39-	00:07	   4.957.440	701.988	+4,12	h2xg3 h4xg3+
 21/39-	00:07	   4.982.185	700.335	+4,02	h2xg3 h4xg3+
 21/39-	00:10	   6.750.572	701.503	-7,55	h2xg3 h4xg3+
 21/41	00:30	  24.606.182	817.345	-10,47	Kh1g1 Ng3xe2+ Bd3xe2 Bc5xe3+ Nc4xe3 Qa8a7 Kg1f2 f7f5 f3f4 Bb7xe4 Rf1c1 Rc8xc1 Ra1xc1 Ke8f7 Be2f3 Qa7d4 Bf3e2 Qd4xb2 Rc1d1 b4b3 Ne3c4 Qb2c3 Nc4d6+ Kf7e7 Nd6xe4 f5xe4 Kf2f1
[...]
However, looking at the position before 23.- ..., Ke7!!:

[d]q1r1k2r/1b3pp1/p3p3/P1b5/1pN1P3/3BBPp1/1P2Q1P1/R4RK1 b k - 1 23

Chest 5.2 has not found any checkmate in 14 moves or less in a search in special mode (not normal mode). I interrupted the search in 15 after 55 minutes of analysis:

Code: Select all

FEN: q1r1k2r/1b3pp1/p3p3/P1b5/1pN1P3/3BBPp1/1P2Q1P1/R4RK1 b k - 1 4 

ChestUCI_52:
FEN: q1r1k2r/1b3pp1/p3p3/P1b5/1pN1P3/3BBPp1/1P2Q1P1/R4RK1 b k -   (12+12)
Stellungs-Analyse:  C0/R0/K1/P9/X30   S:10/36
Suche nach Spezial-Matt [C0/R0/K1/P9/X30] in 15 ...  (Hash=512MB)
Berechnung abgebrochen !
It seems that Chest disagrees with the claim of checkmate in 12 moves given by Stockfish_15090721_x64_modern in one of your posts. I recall that the search was done in special mode, not in normal mode.

Regards from Spain.

Ajedrecista.
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