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4 problem(s) found in 6690 milliseconds (displaying 4 problem(s)). [COMMENTDATE>=20220810 AND G='Retro' AND NOT A='Juel, Henrik' AND S='Suomen Tehtäväniekat'] [download as LaTeX]

1 - P0005899
Unto Heinonen
Suomen Tehtäväniekat 02/1993
1. Lob
P0005899
(7+7)
BP in 30,5
1. h4 g5 2. hxg5 a5 3. b4 axb4 4. Th4 Ta3 5. Sf3 Te3 6. a4 Sf6 7. gxf6 e5 8. Tc4 h5 9. a5 h4 10. a6 h3 11. a7 h2 12. a8=L h1=L 13. Ta6 Th6 14. dxe3 Le7 15. Te6 fxe6 16. La3 b3 17. Lc5 Sc6 18. Sd4 exd4 19. Sc3 dxc3 20. g4 Se5 21. Lg2 b6 22. Lac6 dxc6 23. fxe7 Dd3 24. Ld5 exd5 25. cxd3 Lf5 26. gxf5 Te6 27. fxe6 Le4 28. dxe4 bxc5 29. f4 dxc4 30. Dc2 bxc2 31. fxe5
play all play one stop play next play all
Juha Saukkola:: Solution not unique! (2000-09-29)
Moldenhauer: Computerprüfung: C+ NUPG Stelvio 1.11 00:02:12 Minuten. (hh:mm:ss)
Keine Lösung: BP 29.5, BP 30.0. (2023-04-24)
Moldenhauer: Beispiel Stelvio 1.11: 1.Sc3 Sc6 2.b3 Sf6 3.La3 a5 4.g4 a4 5.Lg2 Ta5 6.h4 Tf5
7.Lc5 axb3 8.Ld5 b6 9.a4 bxc5 10.gxf5 g5 11.hxg5 e5 12.Th4 h5 13.Tc4 h4
14.a5 h3 15.a6 h2 16.a7 h1D 17.Ta6 De4 18.Sf3 Le7 19.Sd4 exd4 20.a8D Se5
21.Te6 dxc3 22.Dc6 dxc6 23.d4 fxe6 24.dxe5 exd5 25.gxf6 Le6
26.fxe6 dxc4 27.fxe7 Ddd3 28.cxd3 Th3 29.Dc2 Te3 30.dxe4 bxc2 31.fxe3 (2023-04-24)
comment
Keywords: Non-Unique Proof Game, Promotion
Genre: Retro
FEN: 4k3/2p1P3/2p1P3/2p1P3/2p1P3/2p1P3/2p1P3/4K3
Reprints: The Problemist 11/1993
Input: Gerd Wilts, 1995-06-26
Last update: A.Buchanan, 2012-04-10 more...
2 - P1067422
Olli Heimo
Suomen Tehtäväniekat 2001
Joose Norri gewidmet
1. Preis
P1067422
(11+12) C+
BP in 25,5
1. e4 b5 2. e5 Lb7 3. e6 Lf3 4. gxf3 Sf6 5. Lg2 Se4 6. fxe4 a5 7. e5 Ta6 8. La8 b4 9. Sf3 b3 10. Tg1 bxc2 11. Tg6 cxb1=L 12. Th6 Le4 13. d3 a4 14. dxe4 a3 15. Dd6 axb2 16. a4 bxc1=L 17. a5 Le3 18. fxe3 exd6 19. 0-0-0 Le7 20. Tf1 0-0 21. Se1 Te8 22. Tff6 Lf8 23. e7 Sc6 24. e6 Sa7 25. e5 c6 26. e4
play all play one stop play next play all
Olli Heimo: Hi! Has anybody a strong enough computer for testing? In 2001 I tested the first 22,5 moves, it took 20 hours, but it does not prove anything. My current computer can check up to 23 moves in a reasonable time. Olli. (2015-02-25)
Henrik Juel: I am afraid that I cannot help you, Olli.
The keyword Albino looks strange in a proof game (2015-02-25)
Olli Heimo: This problem shows four different white pawns moves to e4. Perhaps Albino is a wrong term. In principle it could be possible to have five pawns reaching same square on fourth row, but I believe that it can not be done in a sound proofgame. (2015-02-26)
Moldenhauer: Computerprüfung: C+ Stelvio 1.0 12:07:15 Stunden.
Keine Lösung: BP 24.5, BP 25.0. (2023-02-17)
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: Stelvio 1.0
FEN: B2qrbk1/n2pPppp/r1ppPR1R/P3P3/4P3/8/7P/2K1N3
Reprints: feenschach 153 10-12/2003
Input: Gerd Wilts, 2005-01-09
Last update: Silvio Baier, 2023-03-03 more...
3 - P1272249
Olli Heimo
Suomen Tehtäväniekat 01/1996
P1272249
(13+12) C+
BP in 8,0
1. e3 b5 2. Ld3 Lb7 3. Lxh7 Lxg2 4. Le4 Txh2 5. Lxa8 Th6 6. Txh6 Sa6 7. Txa6 Lxa8 8. Ta3 Lh1
play all play one stop play next play all
The solution contains all 15 possible move lengths.
Moldenhauer: Computerprüfung: C+ Stelvio 1.4 in 1 Sekunde.
Keine Lösung: BP 7.5. (2023-07-10)
Henrik Juel: The lengths in increasing order are
e3 Lb7 b5 Sa6 Ld3 Ta3 Th6 Le4 Txh6 Lxh7,Lxa8 Txh2 Txa6 Lxg2 Lxa8 Lh1
One length appears twice, unfortunately
Has anyone made an optimal problem, in 7.5 moves?
Or maybe this task is impossible... (2023-07-10)
comment
Keywords: Unique Proof Game
Genre: Retro
Computer test: Stelvio 1.4
FEN: 3qkbn1/p1ppppp1/8/1p6/8/R3P3/PPPP1P2/RNBQK1Nb
Input: Gerd Wilts, 2013-06-13
Last update: Silvio Baier, 2023-08-15 more...
4 - P1384598
Unto Heinonen
Suomen Tehtäväniekat 2010-2011
4. Preis
P1384598
(15+14) C+
BP 20
Vladimir Rey: 1. e4 d5 2. Df3 Lh3 3. Df6 exf6 4. gxh3 La3 5. bxa3 g5 6. Lb2 g4 7. Le5 g3 8. Sc3 g2 9. Lg3 b5 10. f4 b4 11. Sf3 g1=L 12. e5 Lc5 13. e6 Lf8 14. e7 Kd7 15. e8=D+ Kd6 16. Da4 b3 17. Lb5 b2 18. Se2 b1=L 19. c4 Lf5 20. Dd1 Lc8 (2022-09-08)
comment

Genre: Retro
FEN: rnbq1bnr/p1p2p1p/3k1p2/1B1p4/2P2P2/P4NBP/P2PN2P/R2QK2R
Input: fs/hg, 2020-12-30
Last update: fs/hg, 2020-12-30 more...
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The problems of this query have been registered by the following contributors:

Gerd Wilts (3)
fs/hg (1)