Author: Vincent Diepeveen
Date: 16:25:46 01/28/02
Go up one level in this thread
On January 28, 2002 at 19:07:21, Les Fernandez wrote: >On January 28, 2002 at 19:01:26, Vincent Diepeveen wrote: > >>On January 28, 2002 at 18:54:07, Dann Corbit wrote: >> >>>On January 28, 2002 at 18:44:15, Vincent Diepeveen wrote: >>> >>>>On January 28, 2002 at 18:17:11, Dann Corbit wrote: >>>> >>>>that only shows how to store KRK as far as i see Dann, >>>>not a random position with nearly all pieces on the board. >>>> >>>>Not a single example of a full board position is inside the document. >>>> >>>>please encode next position for me, ignore castling rights doing it: >>>> >>>>nr3qrk/2QRp1Np/2p1Pp1n/2Pp3P/pp1P1K1P/3B1P2/PP1BNbp1/R7 w - - 0 1 >>> >>>I assume that you can read his simple encoding system. Now, take that method >>>and compose the position for it. Then consider that that position (together >>>with its eval, ce, pv, etc) are identical to these, if you have read "Through >>>the Looking Glass": >> >>>7r/1PBnb1pp/2p1b3/p1k1p1PP/p3Pp2/N1Pp1P2/Pn1Prq2/KRQ3RN b - - >>>krq3rn/pN1pRQ2/n1pP1p2/P3pP2/P1K1P1pp/2P1B3/1pbNB1PP/7R w - - >>>nr3qrk/2QRp1Np/2p1Pp1n/2Pp3P/pp1P1K1P/3B1P2/PP1BNbp1/R7 w - - >>>r7/pp1bnBP1/3b1p2/PP1p1k1p/2pP3p/2P1pP1N/2qrP1nP/NR3QRK b - - >> >>>Since we encode 4 positions and need to store only 1 (the one that is lexically >>>smallest on top) we divide the number of bits needed by 4. It is a trick so >>>simple that I am surprised anyone would not grasp the notion instantly. >> >>that reduces the thing by 2 bits. Somehow i get impression you guys >>confuse bits with bytes. You store positions in 162 bytes? > >Hi Vincent, > >No I think we are speaking of bits but my examples are representations of bits >but are actaully ascii at the moment but concept wise the same. Hey check this >out!! > >1.4 bits/position All positions have been extracted from a 63 bit binary key. >63/44= 1.4 bits/position. Thought you might enjoy this <S> your approach is worth nothing. because with my compression i get under 1 bit a position then. all you do is: "oh we need 250 bits to store a position, and we can mirror it 4 times ==> 250 / 4 = 60 bits a position needed". That is not funny of course. You need 250 bits in that case *not* 60 bits. > >k1K5/7R/8/8/8/8/8/8 w - - ce 32762; pv Rh8; >k1K5/8/7R/8/8/8/8/8 w - - ce 32762; pv Rh8; >k1K5/8/8/7R/8/8/8/8 w - - ce 32762; pv Rh8; >k1K5/8/8/8/7R/8/8/8 w - - ce 32762; pv Rh8; >k1K5/8/8/8/8/7R/8/8 w - - ce 32762; pv Rh8; >k1K5/8/8/8/8/8/7R/8 w - - ce 32762; pv Rh8; >k1K5/8/8/8/8/8/8/7R w - - ce 32762; pv Rh8; >k1K3R1/8/8/8/8/8/8/8 w - - ce 32762; pv Rh8; >k1K2R2/8/8/8/8/8/8/8 w - - ce 32762; pv Rh8; >k1K1R3/8/8/8/8/8/8/8 w - - ce 32762; pv Rh8; >k1KR4/8/8/8/8/8/8/8 w - - ce 32762; pv Rh8; >5K1k/R7/8/8/8/8/8/8 w - - ce 32762; pv Ra8; >5K1k/8/R7/8/8/8/8/8 w - - ce 32762; pv Ra8; >5K1k/8/8/R7/8/8/8/8 w - - ce 32762; pv Ra8; >5K1k/8/8/8/R7/8/8/8 w - - ce 32762; pv Ra8; >5K1k/8/8/8/8/R7/8/8 w - - ce 32762; pv Ra8; >5K1k/8/8/8/8/8/R7/8 w - - ce 32762; pv Ra8; >5K1k/8/8/8/8/8/8/R7 w - - ce 32762; pv Ra8; >1R3K1k/8/8/8/8/8/8/8 w - - ce 32762; pv Ra8; >2R2K1k/8/8/8/8/8/8/8 w - - ce 32762; pv Ra8; >3R1K1k/8/8/8/8/8/8/8 w - - ce 32762; pv Ra8; >4RK1k/8/8/8/8/8/8/8 w - - ce 32762; pv Ra8; >8/8/8/8/8/8/7r/K1k5 b - - ce 32762; pv Rh1; >8/8/8/8/8/7r/8/K1k5 b - - ce 32762; pv Rh1; >8/8/8/8/7r/8/8/K1k5 b - - ce 32762; pv Rh1; >8/8/8/7r/8/8/8/K1k5 b - - ce 32762; pv Rh1; >8/8/7r/8/8/8/8/K1k5 b - - ce 32762; pv Rh1; >8/7r/8/8/8/8/8/K1k5 b - - ce 32762; pv Rh1; >7r/8/8/8/8/8/8/K1k5 b - - ce 32762; pv Rh1; >8/8/8/8/8/8/8/K1k3r1 b - - ce 32762; pv Rh1; >8/8/8/8/8/8/8/K1k2r2 b - - ce 32762; pv Rh1; >8/8/8/8/8/8/8/K1k1r3 b - - ce 32762; pv Rh1; >8/8/8/8/8/8/8/K1kr4 b - - ce 32762; pv Rh1; >8/8/8/8/8/8/r7/5k1K b - - ce 32762; pv Ra1; >8/8/8/8/8/r7/8/5k1K b - - ce 32762; pv Ra1; >8/8/8/8/r7/8/8/5k1K b - - ce 32762; pv Ra1; >8/8/8/r7/8/8/8/5k1K b - - ce 32762; pv Ra1; >8/8/r7/8/8/8/8/5k1K b - - ce 32762; pv Ra1; >8/r7/8/8/8/8/8/5k1K b - - ce 32762; pv Ra1; >r7/8/8/8/8/8/8/5k1K b - - ce 32762; pv Ra1; >8/8/8/8/8/8/8/1r3k1K b - - ce 32762; pv Ra1; >8/8/8/8/8/8/8/2r2k1K b - - ce 32762; pv Ra1; >8/8/8/8/8/8/8/3r1k1K b - - ce 32762; pv Ra1; >8/8/8/8/8/8/8/4rk1K b - - ce 32762; pv Ra1;
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