Author: Uri Blass
Date: 12:01:35 03/01/05
Go up one level in this thread
On March 01, 2005 at 14:49:47, Heiner Marxen wrote: >On March 01, 2005 at 14:34:36, Uri Blass wrote: > >>On March 01, 2005 at 14:24:44, Dann Corbit wrote: >> >>>On March 01, 2005 at 14:22:49, Uri Blass wrote: >>> >>>>On March 01, 2005 at 13:53:34, Dann Corbit wrote: >>>> >>>>>The opposite of a good test move (one best move choice) is one with lots of >>>>>equally good winning moves. I was playing around, analyzing some Orangutan >>>>>games and stumbled on this position: >>>>>[D]1Q6/8/2K5/3NQ1p1/8/8/5k2/8 w - - acn 2564; acs 0; bm Nc3 Ne3 Qb1 Qb3 Qb4 Qb5 >>>>>Qbb2+ Qbh8 Qc3 Qc8 Qe3+ Qe4 Qe6 Qe7 Qee8 Qf5+ Qf8+ Qg3+ Qh2+; ce 32762; dm 3; pv >>>>>Qf5+ Kg2 Ne3+ Kg1 Qf1#; >>>>> >>>>>Which made me wonder, >>>>>In a real game, what is the most ever equally good (DTM) simultaneous best >>>>>moves? >>>>> >>>>>19 equal mates in 3 is interesting, but I wonder if there has ever been (for >>>>>example) 100 best moves leading to mate in some minimum distance. >>>> >>>>I think that it will be hard to find more than 100 legal move in games(you can >>>>construct position with more than 200 moves but if you talk about positions from >>>>real games then my experience is that even more than 80 is very rare). >>>> >>>>constructing a position with more than 19 mates in 1 is easy >>>> >>>> >>>> >>>>[D]k7/2PPPPPP/7K/2Q5/2Q5/2Q5/6R1/1R5B w - - 0 1 >>>> >>>>Here is first position that I composed and I am sure it is easy to compose a >>>>better example. >>> >>>That is why I restricted the set to "real games" rather than constructed >>>problems. But that is an equally interesting alternative question. >> >>I think that the second example that I compose is better >> >>[D]1Q5B/2N1Q1R1/4N3/Q1B1k3/3RBR2/8/7Q/Q3Q1K1 w - - 0 1 >> >>I can modify movei to calculate how many mates in 1 white has in a short time >>but it seems that every move of the pieces except the kings and the queens is >>indirect mate because every square near the king is protected by at least 2 >>white pieces and only one can stop defending it. >> >>I am sure that there is a better example than it. >> >> >>Uri > >Not bad, 57 mate in 1: > >W: Kg1 Qa1 Qa5 Qb8 Qe1 Qe7 Qh2 Rd4 Rf4 Rg7 Bc5 Be4 Bh8 Nc7 Ne6 (15) >B: Ke5 (1) >FEN: 1Q5B/2N1Q1R1/4N3/Q1B1k3/3RBR2/8/7Q/Q3Q1K1 w - - >analysing (mate in 1 moves): >Solution (in 1 moves): > Ne6 - d8 > Ne6 - f8 > Ne6 - g5 > Nc7 - a8 > Nc7 - a6 > Nc7 - b5 > Nc7 - d5 > Nc7 - e8 > Be4 - f5 > Be4 - g6 > Be4 - h7 > Be4 - d3 > Be4 - c2 > Be4 - b1 > Be4 - f3 > Be4 - g2 > Be4 - h1 > Be4 - d5 > Be4 - c6 > Be4 - b7 > Be4 - a8 > Bc5 - d6 > Bc5 - b4 > Bc5 - a3 > Bc5 - b6 > Bc5 - a7 > Rg7 - h7 > Rg7 - f7 > Rg7 - g8 > Rg7 - g6 > Rg7 - g5 > Rg7 - g4 > Rg7 - g3 > Rg7 - g2 > Rf4 - g4 > Rf4 - h4 > Rf4 - f5 > Rf4 - f6 > Rf4 - f7 > Rf4 - f8 > Rf4 - f3 > Rf4 - f2 > Rf4 - f1 > Rd4 - c4 > Rd4 - b4 > Rd4 - a4 > Rd4 - d5 > Rd4 - d6 > Rd4 - d7 > Rd4 - d8 > Rd4 - d3 > Rd4 - d2 > Rd4 - d1 > Qh2 - h5 > Qe7 - g5 > Qe7 - f6 > Qe7 - d6 > >Cheers, >Heiner Modified movei confirm that it is correct. originally I tried to use chest under fritz gui but when I copied list of the solutions I saw that the same solution repeated more than once. Here is analysis copied from the fritz gui. New game, 1Q5B/2N1Q1R1/4N3/Q1B1k3/3RBR2/8/7Q/Q3Q1K1 w - - 0 1 Analysis by ChestUCI Ver.3.7: 1.Nd8# +- (#1) Depth: 1 00:00:00 1.Nf8# +- (#1) Depth: 1 00:00:00 1.Ng5# +- (#1) Depth: 1 00:00:00 1.Na8# +- (#1) Depth: 1 00:00:00 1.Na6# +- (#1) Depth: 1 00:00:00 1.Nb5# +- (#1) Depth: 1 00:00:00 1.Nd5# +- (#1) Depth: 1 00:00:00 1.Ne8# +- (#1) Depth: 1 00:00:00 1.Bf5# +- (#1) Depth: 1 00:00:00 1.Bg6# +- (#1) Depth: 1 00:00:00 1.Bh7# +- (#1) Depth: 1 00:00:00 1.Bd3# +- (#1) Depth: 1 00:00:00 1.Bc2# +- (#1) Depth: 1 00:00:00 1.Bb1# +- (#1) Depth: 1 00:00:00 1.Bf3# +- (#1) Depth: 1 00:00:00 1.Bg2# +- (#1) Depth: 1 00:00:00 1.Bh1# +- (#1) Depth: 1 00:00:00 1.Bd5# +- (#1) Depth: 1 00:00:00 1.Bc6# +- (#1) Depth: 1 00:00:00 1.Bb7# +- (#1) Depth: 1 00:00:00 1.Ba8# +- (#1) Depth: 1 00:00:00 1.Bd6# +- (#1) Depth: 1 00:00:00 1.Bb4# +- (#1) Depth: 1 00:00:00 1.Ba3# +- (#1) Depth: 1 00:00:00 1.Bb6# +- (#1) Depth: 1 00:00:00 1.Ba7# +- (#1) Depth: 1 00:00:00 1.Rh7# +- (#1) Depth: 1 00:00:00 1.Rgf7# +- (#1) Depth: 1 00:00:00 1.Rg8# +- (#1) Depth: 1 00:00:00 1.Rg6# +- (#1) Depth: 1 00:00:00 1.Rg5# +- (#1) Depth: 1 00:00:00 1.Rgg4# +- (#1) Depth: 1 00:00:00 1.Rg3# +- (#1) Depth: 1 00:00:00 1.Rg2# +- (#1) Depth: 1 00:00:00 1.Rfg4# +- (#1) Depth: 1 00:00:00 1.Rh4# +- (#1) Depth: 1 00:00:00 1.Rf5# +- (#1) Depth: 1 00:00:00 1.Rf6# +- (#1) Depth: 1 00:00:00 1.Rff7# +- (#1) Depth: 1 00:00:00 1.Rf8# +- (#1) Depth: 1 00:00:00 1.Rf3# +- (#1) Depth: 1 00:00:00 1.Rf2# +- (#1) Depth: 1 00:00:00 1.Rf1# +- (#1) Depth: 1 00:00:00 1.Rc4# +- (#1) Depth: 1 00:00:00 1.Rb4# +- (#1) Depth: 1 00:00:00 1.Ra4# +- (#1) Depth: 1 00:00:00 1.Rd5# +- (#1) Depth: 1 00:00:00 1.Rd6# +- (#1) Depth: 1 00:00:00 1.Rd7# +- (#1) Depth: 1 00:00:00 1.Rd8# +- (#1) Depth: 1 00:00:00 1.Rd3# +- (#1) Depth: 1 00:00:00 1.Rd2# +- (#1) Depth: 1 00:00:00 1.Rd1# +- (#1) Depth: 1 00:00:00 1.Qh5# +- (#1) Depth: 1 00:00:00 1.Qg5# +- (#1) Depth: 1 00:00:00 1.Qf6# +- (#1) Depth: 1 00:00:00 1.Qd6# +- (#1) Depth: 1 00:00:00 1.Qd6# +- (#1) Depth: 1/1 00:00:00 1.Qf6# +- (#1) Depth: 1/1 00:00:00 1.Qg5# +- (#1) Depth: 1/1 00:00:00 1.Qh5# +- (#1) Depth: 1/1 00:00:00 1.Rd1# +- (#1) Depth: 1/1 00:00:00 1.Rd2# +- (#1) Depth: 1/1 00:00:00 1.Rd3# +- (#1) Depth: 1/1 00:00:00 1.Rd8# +- (#1) Depth: 1/1 00:00:00 1.Rd7# +- (#1) Depth: 1/1 00:00:00 1.Rd6# +- (#1) Depth: 1/1 00:00:00 1.Rd5# +- (#1) Depth: 1/1 00:00:00 1.Ra4# +- (#1) Depth: 1/1 00:00:00 1.Rb4# +- (#1) Depth: 1/1 00:00:00 1.Rc4# +- (#1) Depth: 1/1 00:00:00 1.Rf1# +- (#1) Depth: 1/1 00:00:00 1.Rf2# +- (#1) Depth: 1/1 00:00:00 1.Rf3# +- (#1) Depth: 1/1 00:00:00 1.Rf8# +- (#1) Depth: 1/1 00:00:00 1.Rff7# +- (#1) Depth: 1/1 00:00:00 1.Rf6# +- (#1) Depth: 1/1 00:00:00 1.Rf5# +- (#1) Depth: 1/1 00:00:00 1.Rh4# +- (#1) Depth: 1/1 00:00:00 1.Rfg4# +- (#1) Depth: 1/1 00:00:00 1.Rg2# +- (#1) Depth: 1/1 00:00:00 1.Rg3# +- (#1) Depth: 1/1 00:00:00 1.Rgg4# +- (#1) Depth: 1/1 00:00:00 1.Rg5# +- (#1) Depth: 1/1 00:00:00 1.Rg6# +- (#1) Depth: 1/1 00:00:00 1.Rg8# +- (#1) Depth: 1/1 00:00:00 1.Rgf7# +- (#1) Depth: 1/1 00:00:00 1.Rh7# +- (#1) Depth: 1/1 00:00:00 1.Ba7# +- (#1) Depth: 1/1 00:00:00 1.Bb6# +- (#1) Depth: 1/1 00:00:00 1.Ba3# +- (#1) Depth: 1/1 00:00:00 1.Bb4# +- (#1) Depth: 1/1 00:00:00 1.Bd6# +- (#1) Depth: 1/1 00:00:00 1.Ba8# +- (#1) Depth: 1/1 00:00:00 1.Bb7# +- (#1) Depth: 1/1 00:00:00 1.Bc6# +- (#1) Depth: 1/1 00:00:00 1.Bd5# +- (#1) Depth: 1/1 00:00:00 1.Bh1# +- (#1) Depth: 1/1 00:00:00 1.Bg2# +- (#1) Depth: 1/1 00:00:00 1.Bf3# +- (#1) Depth: 1/1 00:00:00 1.Bb1# +- (#1) Depth: 1/1 00:00:00 1.Bc2# +- (#1) Depth: 1/1 00:00:00 1.Bd3# +- (#1) Depth: 1/1 00:00:00 1.Bh7# +- (#1) Depth: 1/1 00:00:00 1.Bg6# +- (#1) Depth: 1/1 00:00:00 1.Bf5# +- (#1) Depth: 1/1 00:00:00 1.Ne8# +- (#1) Depth: 1/1 00:00:00 1.Nd5# +- (#1) Depth: 1/1 00:00:00 1.Nb5# +- (#1) Depth: 1/1 00:00:00 1.Na6# +- (#1) Depth: 1/1 00:00:00 1.Na8# +- (#1) Depth: 1/1 00:00:00 1.Ng5# +- (#1) Depth: 1/1 00:00:00 1.Nf8# +- (#1) Depth: 1/1 00:00:00 1.Nd8# +- (#1) Depth: 1/1 00:00:00 (, 01.03.2005) Uri
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