Website founded by
Milan Velimirović
in 2006
18:12 UTC
| |
MatPlus.Net  Forum General Logical try in the future |
| |
|
|
|
|
You can only view this page!
| | | (1) Posted by Hauke Reddmann [Wednesday, Jan 19, 2022 12:41] | Logical try in the future
No, not OF the future :-)
A reason for a try/solution split (say, promoting to R instead of
Q because of stalemate) can be immediate (Ka4 Pb7 - Ka6),
but it can lie further into the future (add a rambling rook: +wRh5,+bRg3
- now the stalemate is obvious only after 2...Rb3+ - 1.Rb5 wins too BTW).
"Further" can be a long long time - how long?
| | | (2) Posted by Dmitri Turevski [Wednesday, Jan 19, 2022 20:01] |
Obvious candidate is Blathy's h4?/h3!
https://www.yacpdb.org/#67659
Also wasn't it the theme of the studies section in the 10 WCCT?
https://www.wfcc.ch/wp-content/uploads/10-WCCT-Final-Award.pdf
| | | (3) Posted by James Malcom [Wednesday, Jan 19, 2022 20:42] |
I take this to mean at what depth does a move finally reveal its purpose.
Rook promotion allows this Lindgren long shot: https://pdb.dieschwalbe.de/P1389840 The third moves looks 26 moves into the future.
Bo Lindgren, Probleemblad 1999, #30
 (= 11+13 )
1. Nc8+ Ka8 2. Nb6+ Ka7 3. c8=R! Nb1+ 4. Ka2 Qb3+ 5. Rxb3 cxb3+ 6. Kxa1 Bxb2+ 7. Kxb1 c2+ 8. Nxc2 bxc2+ 9. Kxb2 c1=Q+ 10. Kxc1 d2+ 11. Kc2 d1=Q+ 12. Kxd1 e2+ 13. Kd2 e1=Q+ 14. Kxe1 f2+ 15. Kf1 Bc4+ 16. Bxc4 Rh1+ 17. Kxf2 R1h2+ 18. Ke1 Re3+ 19. Kd1 Re1+ 20. Kxe1 Re2+ 21. Kd1 Rd2+ 22. Kc1 Rc2+ 23. Kb1 Rb2+ 24. Ka1 Rb1+ 25. Ka2 Ra1+ 26. Kb2 Rb1+ 27. Ka3 Ra1+ 28. Ba2 Rxa2+ 29. Kxa2 Ka6 30. Ra8#
I looked 8 moves into the feature myself with this selfmate.
James Malcom, OzProblems 11/7/2020, s#13
 (= 8+12 )
1. Rd8! d1=Q 2. Rcc8 Qc1+ 3. Rxc1 fxg1=Q 4. Rcc8 Qc1+ 5. Rxc1 g1=Q 6. Rcc8 Qc1+ 7. Rxc1 g2 8. Rcc8 Bd6 9. Rxd6 g1=Q 10. Rdd8 Qc1+ 11. Rxc1 b3 12. Rcc8 d3 13. Rxf8+ Nxf8#
For helpmates, I know of this from the thread I found the Lindgren problem in: http://matplus.net/start.php?px=1621448156&app=forum&act=posts&fid=xshown&tid=302
Frank Richter, harmonie 2006, h#17
 (= 7+9 )
1.Be8 Bh2 2.Kg6 Bg1 3.Kf5 Bh2 4.Ke4 Bg1 5.Kxd4 Bh2 6.Kc4 Bg1 7.Kxb4 Bh2 8.Ka3 Bg1 9.b4 Bh2 10.b3 Bg1 11.b2 Bh2 12.b1=S Bg1 13.Sxd2 Kxd2 14.e1=Q+ Kxd3 15.Qxf2 Kc3 16.Qa2 Bxb6 17.Ba4 Bc5#
| |
No more posts |
MatPlus.Net Forum General Logical try in the future |
|
|
|
ISC 2024
