Author: Uri Blass
Date: 13:12:03 09/17/00
Go up one level in this thread
On September 17, 2000 at 13:59:14, Ed Schröder wrote: >On September 17, 2000 at 13:53:18, Uri Blass wrote: > >>On September 17, 2000 at 13:02:01, Ed Schröder wrote: >> >>>On September 17, 2000 at 12:28:42, Uri Blass wrote: >>> >>>>On September 17, 2000 at 12:05:40, Paulo Soares wrote: >>>> >>>>>On September 17, 2000 at 06:53:48, Frederic Friedel wrote: >>>>> >>>>>>Many thanks Ricardo and Uri for NOT posting the solution. >>>>> >>>>>I am curious, because you thanked to Ricardo and Uri for not posted the >>>>>solution? >>>>> >>>>>Paulo Soares, from Brazil >>>> >>>>I understood that he wanted people to think about the solution. >>>>In the case of myself I know the solution. >>> >>>I think the white king has to go to a7 to ensure the draw? >>> >>>Ed >> >>This is not the solution. >>The solution is in page 108 of the book: >> >>Endgame Virtuosity(A selection of 222 Israeli Chess studies). >> >>This is one of the books that I got as a prize for winning some of the israeli >>study competitions when the target was to compose long studies when the idea of >>the final position was known(for example in one of the competitions the rules >>said that the final move must be mate for white when white has only 2 pieces >>when one of them is a knight or a bishop or a pawn. >> >>The studies had to be good studies. >>This means that white has always one move to win in the main line(or to draw if >>this is the target). >>I do not remember the exact rules now but there was a rule that the first move >>cannot be a capture(or at least not a capture of more than a pawn). >> >>My studies had not artistic value so they cannot win other competitions(there >>were many captures but the first move was not a capture according to the rules). >> >>I used Genius3 to help me to compose the studies at that time when I always >>checked the next best move. >>I always tried for many hours to prove that my studies are not correct and I >>decided to believe that my studies are correct only after a failure to prove >>that they are not correct. >>I also tried to add moves backward with keeping the correctness of the studies. >>Genius3 helped me to outsearch my opponents who did not use a computer in seeing >>backward and I probably could not win the competitions without it. >> >>I won 4 books because 4 of my studies won first or second place. >>I found that the judge did not check the studies with a computer to check for >>errors and there were studies of other composers with errors. >> >>It is also not easy to know if a study is correct. >> >>This reason convinced me not to try to compose the 5th study and after 5 >>tournaments a new editor came and decided to stop these tournaments. >> >> >>Uri > >Can you post your studies? > >Ed I post the best 3 of them(more than 20 plies). In the first one the initial position is illegal so the correct study begins with 3.c6+ I leave you to find the reason for it. I found it when I tried to find a game to prove that the position is legal. Fortunately 25 plies were also enough to be number one. I remember that I could by adding two queens to do number 2 longer when the first move is still 1...fxg3+ but I do not remember now where I put the queens. The endgame was number 1 without the trade of queens and the people who checked the studies prefered not to check the queen trade that I sent later. One study was less than 20 plies because I discovered a mistake in the last moment and I did not look for it but it was also enough to be number 2. [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "study1"] [Black "?"] [Result "*"] [Annotator "Blass,U"] [SetUp "1"] [FEN "2N5/1p1k1qpq/3Pp2P/N1PPpPB1/2p1RQPK/1p4n1/p7/2Nb4 b - - 0 1"] [PlyCount "27"] 1... Nxf5+ 2. Qxf5 Qhxf5 3. c6+ bxc6 4. dxc6+ Kxc8 5. d7+ Qxd7 6. cxd7+ Kxd7 7. gxf5 gxh6 8. fxe6+ Kxe6 9. Rxe5+ Kxe5 10. Bxh6 Kf6 11. Naxb3 cxb3 12. Nxa2 bxa2 13. Bd2 a1=Q 14. Bc3+ Qxc3 * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "study2"] [Black "?"] [Result "*"] [Annotator "Blass,U"] [SetUp "1"] [FEN "8/8/3R3N/7k/4pprN/1BppppPp/1n2P2K/3R2rQ b - - 0 1"] [PlyCount "24"] 1... fxg3+ 2. Kxg1 h2+ 3. Qxh2 gxh2+ 4. Kxh2 Nxd1 5. Nxg4 Kxg4 6. Nxf3 exf3 7. exf3+ Kf4 8. Rd4+ Kxf3 9. Bxd1+ Kf2 10. Rxd3 c2 11. Bxc2 e2 12. Bd1 e1=Q 13. Rf3# * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "study3"] [Black "?"] [Result "1-0"] [SetUp "1"] [FEN "8/p2q4/4pQ2/p2p4/p1pQ1K2/2p2b2/1N1N1n1p/2B4k b - - 0 1"] [PlyCount "34"] 1... e5+ 2. Kxf3 Qh3+ 3. Kxf2 Qg2+ 4. Ke1 exd4 5. Qf1+ Qxf1+ 6. Kxf1 cxb2 7. Bxb2 c3 8. Nb1 cxb2 9. Kf2 a3 10. Nxa3 a4 11. Nb1 a3 12. Nxa3 d3 13. Nb1 a5 14. Nd2 b1=R 15. Nxb1 a4 16. Nd2 a3 17. Nf1 a2 18. Ng3# 1-0
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