3 problem(s) found in 2203 milliseconds (displaying 3 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND K='Umwandlung' AND A='Popow, Grigori L.'] [download as LaTeX]
1. a8=D! Da5 2. Dxa5 Txa5 3. b8=D Ta1 4. Da8+ Txa8 5. e8=D Ta1 6. Da8+ Txa8 7. La3 Txa3 8. g8=D Ta1 9. Da8+ Txa8 10. c8=D Ta1 11. Dc6+ e4 12. Da4 Txa4 13. h8=D Tb4 14. Sc3 Tb2 15. d8=D Te2 16. Sxe2 dxe2+ 17. Kxe2 Kg2 18. Da1 Sf4+ 19. Kd2 f1=S+ 20. Kc3 Se2+ 21. Kxc4 Le3 22. f8=D Seg3 23. Dfa3 Sd2+ 24. Kb5 Lf4 25. Dd1 Sdf1 26. Da2,Db2+ Sd2 27. Daxd2,D8xd2+ Lxd2 28. D8xd2,D2xd2+ Kh3 29. Df2 e3 30. Dxe3 f4 31. Df2 Sf1 32. Ddf3+ Sg3 33. D2g2#
http://www.arves.org/arves/index.php/en/awards/awards-replayable/1341-tarasiuk-50-jt-2018
Reprint: http://superproblem.ru/archive/probl/N/Popov-33-2018.gif
Cook: Mate in 14 with changed colours and sides:
1... a2-a1D 2.Da3-b3 d2-d1D 3.Db3-b6 Da1-a8 4.Db6-c7 Sd8-c6 5.Sh6-f5 Da8-d8 6.Td4-a4 Dd1-d4 7.Ta4xd4 g2-g1D 8.Td4-a4 Dd8-f6 9.Kh8-h7 Df6-g6 10.Kh7xg6 Dg1xg4 11.Kg6-f6 Dg4xf5 12.Be4xf5 e2-e1D 13.Ta4-a8 Sc6-b8 14.Dc7-c8 De1-e8 15.f7xe8D#
2... b2-b1D 3.Db3-d5 d2-d1D 4.Dd5-g5 Dd1xd4 5.Be4-e5 Dd4xe5 6.Bf4xe5 Da1xe5 7.Dg5xe5 Sd8-e6 8.De5-f6 Db1-b7 9.Sh6-f5 Db7-b2 10.Df6xb2 e2-e1D 11.Db2-b8 Se6-d8 12.Db8xd8 De1-e8 13.f7xe8D#
2... b2-b1T 3.Db3-d5 Tb1-b7 4.Dd5-e5 Da1xd4 5.De5xd4 Tb7xf7 6.Sh6xf7 d2-d1D 7.Dd4-f6 Sd8-c6 8.Sf7-h6 Kf8-e8 9.Df6-e6 Sc6-e7 10.De6xe7#
2... Da1-a5 3.Db3-d5 d2-d1D 4.Dd5-g5 Dd1xd4 5.Be4-e5 Dd4xe5 6.Bf4xe5 Sd8xf7 7.Lg8xf7 nebst 8.Dg5-e7/Dg5-g7/Dg5-g8#
2... Da1-a7 3.Db3-b5 Da7xf7 4.Lg8xf7 Sd8xf7 5.Sh6xf7 b2-b1D 6.Db5-d7 Db1-b7 7.Dd7xb7 nebst 8.Db7-e7#
2... Da1-a8 3.Td4-a4 Da8-a7 4.Ta4xa7 b2-b1D 5.Ta7-e7 Db1-a1 6.Be4-e5 Da1-a4 7.Db3xa4 droht 8.Da4-e8/Te7-e8#
2... e2-e1D 3.Db3-b8 Da1-a5 4.Bd6-d7 De1xe4 5.Td4xe4 Da5-c3 6.Te4-e5 Dc3xe5 7.Bf4xe5 nebst 8.Db8-d6/Db8xd8#
1... a2-a1T 2.Td4-d5 Ta1xa3 3.Td5-e5 Sd8-e6 4.Te5xe6 Ta3-a8 5.Bd6-d7 Ta8-b8 6.Te6-e8 Tb8xe8 7.d7xe8D#
http://www.arves.org/arves/index.php/en/awards/awards-replayable/1341-tarasiuk-50-jt-2018
Reprint: http://superproblem.ru/archive/probl/N/Popov-33-2018.gif
Cook: Mate in 14 with changed colours and sides:
1... a2-a1D 2.Da3-b3 d2-d1D 3.Db3-b6 Da1-a8 4.Db6-c7 Sd8-c6 5.Sh6-f5 Da8-d8 6.Td4-a4 Dd1-d4 7.Ta4xd4 g2-g1D 8.Td4-a4 Dd8-f6 9.Kh8-h7 Df6-g6 10.Kh7xg6 Dg1xg4 11.Kg6-f6 Dg4xf5 12.Be4xf5 e2-e1D 13.Ta4-a8 Sc6-b8 14.Dc7-c8 De1-e8 15.f7xe8D#
2... b2-b1D 3.Db3-d5 d2-d1D 4.Dd5-g5 Dd1xd4 5.Be4-e5 Dd4xe5 6.Bf4xe5 Da1xe5 7.Dg5xe5 Sd8-e6 8.De5-f6 Db1-b7 9.Sh6-f5 Db7-b2 10.Df6xb2 e2-e1D 11.Db2-b8 Se6-d8 12.Db8xd8 De1-e8 13.f7xe8D#
2... b2-b1T 3.Db3-d5 Tb1-b7 4.Dd5-e5 Da1xd4 5.De5xd4 Tb7xf7 6.Sh6xf7 d2-d1D 7.Dd4-f6 Sd8-c6 8.Sf7-h6 Kf8-e8 9.Df6-e6 Sc6-e7 10.De6xe7#
2... Da1-a5 3.Db3-d5 d2-d1D 4.Dd5-g5 Dd1xd4 5.Be4-e5 Dd4xe5 6.Bf4xe5 Sd8xf7 7.Lg8xf7 nebst 8.Dg5-e7/Dg5-g7/Dg5-g8#
2... Da1-a7 3.Db3-b5 Da7xf7 4.Lg8xf7 Sd8xf7 5.Sh6xf7 b2-b1D 6.Db5-d7 Db1-b7 7.Dd7xb7 nebst 8.Db7-e7#
2... Da1-a8 3.Td4-a4 Da8-a7 4.Ta4xa7 b2-b1D 5.Ta7-e7 Db1-a1 6.Be4-e5 Da1-a4 7.Db3xa4 droht 8.Da4-e8/Te7-e8#
2... e2-e1D 3.Db3-b8 Da1-a5 4.Bd6-d7 De1xe4 5.Td4xe4 Da5-c3 6.Te4-e5 Dc3xe5 7.Bf4xe5 nebst 8.Db8-d6/Db8xd8#
1... a2-a1T 2.Td4-d5 Ta1xa3 3.Td5-e5 Sd8-e6 4.Te5xe6 Ta3-a8 5.Bd6-d7 Ta8-b8 6.Te6-e8 Tb8xe8 7.d7xe8D#
Keywords: konsekutive Umwandlungen 9 (DDDDDDDsD), Promotion key, under-promotion (s)
Genre: n#
FEN: 5B2/PPPPPPPP/q7/3rppp1/2p4p/3p3n/5p2/3N1Kbk
Input: James Malcom, 2020-11-06
Last update: Olaf Jenkner, 2022-12-23 more...
Genre: n#
FEN: 5B2/PPPPPPPP/q7/3rppp1/2p4p/3p3n/5p2/3N1Kbk
Input: James Malcom, 2020-11-06
Last update: Olaf Jenkner, 2022-12-23 more...
1. h8=D#,T#? Kxg1!
1. Tg7! e2+ 2. Kxe2 d1=D+ 3. Ke3+ De2 4. Kd4 Dd2+ 5. Ke5 De2+ 6. Kd6 b3+ 7. Kd7 Dd2+ 8. Kc8 Dg2 9. Tgxg2+ Kh3 10. h8=D#,T#
Pulled from http://popovgl.narod.ru/Popovian/P-2010-10.html
The source is given there as:
600-let Gryunfel'dskoi bitvyi
Nauji Ushdaviniai nr. 4/2010-2040
2 pokhval'nyi otsyv
1. Tg7! e2+ 2. Kxe2 d1=D+ 3. Ke3+ De2 4. Kd4 Dd2+ 5. Ke5 De2+ 6. Kd6 b3+ 7. Kd7 Dd2+ 8. Kc8 Dg2 9. Tgxg2+ Kh3 10. h8=D#,T#
Pulled from http://popovgl.narod.ru/Popovian/P-2010-10.html
The source is given there as:
600-let Gryunfel'dskoi bitvyi
Nauji Ushdaviniai nr. 4/2010-2040
2 pokhval'nyi otsyv
Henrik Juel: Popeye 4.61 with 'opt thr 1' found no flaws (apart from the promotion dual h8=DT) (2022-04-25)
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Keywords: Promotion (d), Tolerated dual promotion, Cross check (Kd)
Genre: n#
Computer test: Popeye 4.86
FEN: 8/1p5P/1p6/1p6/1p6/b1p1p3/r1Rp3k/qn1K2R1
Input: James Malcom, 2022-04-25
Last update: James Malcom, 2022-04-25 more...
Genre: n#
Computer test: Popeye 4.86
FEN: 8/1p5P/1p6/1p6/1p6/b1p1p3/r1Rp3k/qn1K2R1
Input: James Malcom, 2022-04-25
Last update: James Malcom, 2022-04-25 more...
1. Te2+! Kf1 2. Te3+ Kf2 3. f4 g4 4. Te2+ Kf1 5. Te4+ Kf2 6. f5 g5 7. Te2+ Kf1 8. Te5+ Kf2 9. f6 g6 10. Te2+ Kf1 11. Te8+! Kf2 12. f7 Sd7 13. f8=D+/T+ Sxf8 14. Te2+ Kf1 15. Te6+ Kf2 16. Tf6+ Kxe1 17. Tf1#
See P1386417
http://superproblem.ru/archive/Stat/Stat8.html
See P1386417
http://superproblem.ru/archive/Stat/Stat8.html
Anton Baumann: Dual: 13.f8=T+ (2022-06-15)
James Malcom: The classical tolerated promotion dual, to be precise. (2022-06-16)
Henrik Juel: Usually only promotion mate duals are tolerated (2022-06-16)
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James Malcom: The classical tolerated promotion dual, to be precise. (2022-06-16)
Henrik Juel: Usually only promotion mate duals are tolerated (2022-06-16)
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Keywords: Promotion (D), Tolerated dual promotion
FEN: 1nr5/6pr/4R1p1/2p3p1/2B5/5Pp1/2KP1kP1/4N1b1
Input: James Malcom, 2022-06-14
Last update: James Malcom, 2022-06-16 more...
FEN: 1nr5/6pr/4R1p1/2p3p1/2B5/5Pp1/2KP1kP1/4N1b1
Input: James Malcom, 2022-06-14
Last update: James Malcom, 2022-06-16 more...
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https://pdb.dieschwalbe.de/search.jsp?expression=COMMENTDATE%3E%3D20200919+AND+NOT+K%3D%27Hilfsr%C3%BCckz%C3%BCger%27+AND+K%3D%27Umwandlung%27+AND+A%3D%27Popow%2C+Grigori+L.%27
The problems of this query have been registered by the following contributors:
James Malcom (3)
A.Buchanan: It’s not a matter of style whether you have space after comma in the solution. It’s incorrect syntax for the editor (2020-11-06)
edderiofer: According to this Reddit thread, there is a refutation 1...Qb6 : https://www.reddit.com/r/chess/comments/zslnov/this_2018_awardwinning_study_is_wrong_can_you/
I can confirm that Lichess' analysis agrees; after 1.Qa8 Qb6 Lichess eventually returns a mate for Black for every white move but 2.d8=Q, and after 2...Qb3 (any) Black has mate in twelve. (2022-12-23)
edderiofer: According to this Reddit thread, there is a refutation 1...Qb6 : https://www.reddit.com/r/chess/comments/zslnov/this_2018_awardwinning_study_is_wrong_can_you/
I can confirm that Lichess' analysis agrees; after 1.Qa8 Qb6 Lichess eventually returns a mate for Black for every white move but 2.d8=Q, and after 2...Qb3 (any) Black has mate in twelve. (2022-12-23)
Olaf Jenkner: Gustav confirms that black can mate in 14 moves. (2022-12-23)
James Malcom: I emailed Popov about this, and he suggested Rd5-c5. How does this correction fare? (2023-01-07)
Olaf Jenkner: Now white can mate in 14 moves. There are 3 full length variations:
1. b8=D c3 2. a8=D+ e4 3. Dxa6 c2 4. Dxd3 cxd1=D+ 5. Dxd1 Tc3 6. Dbb1 Kh2 7. h8=D Kh1 8. g8=D Te3 9. Dxh4 g4 10. Dxe4+ fxe4 11. Dgxg4 Te1+ 12. Dxe1 fxe1D+ 13. D4xe1 La7 14. Dg2#
1. ... e4 2. a8=D Da5 3. Dxa5 Txa5 4. Db1 c3 5. d8=D c2 6. Dxd3 Kh2 7. Dd6+ Kh1 8. Dxc2 Ta1 9. g8=D Tb1 10. Ddd3 Txd1+ 11. Dcxd1 Kh2 12. Dxh3+ Kxh3 13. Dxg5 e3 14. Dg2#
1. ... Da5 2. a8=D+ e4 und weiter wie oben (2023-01-13)
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