Author: Dann Corbit
Date: 21:20:11 12/16/05
Go up one level in this thread
On December 16, 2005 at 19:19:04, Uri Blass wrote: >On December 16, 2005 at 18:06:01, Dann Corbit wrote: > >>On December 16, 2005 at 17:02:33, K. Burcham wrote: >> >>> >>> >>>Rybka 1.0 Beta 32-bit >>>2200 mhz AMD >>>432 hash >>> >>>r2qk2r/ppp1b1pp/2n1p3/3pP1n1/3P2b1/2PB1NN1/PP4PP/R1BQK2R w KQkq - bm Nxg5; id >>>"Position 3"; >>>1.h3 Bxf3 2.gxf3 >>> ² (0.49) Depth: 22 09:20:55 2534458kN >> >>Bruce's page has some comments about this as a possible alternative move. >>Still, the score is not very convincing. >> >>>r2qrb1k/1p1b2p1/p2ppn1p/8/3NP3/1BN5/PPP3QP/1K3RR1 w - - bm e5; id "Position 5"; >>>1.e5 Nh5 >>> +- (4.01) Depth: 20 06:20:55 1902293kN >> >>At what ply and time was the correct answer discovered? > >Note that I could show that 1.e5 is winning by the following tree >When I let yace to go backward it can see score of even more than +4 in the root > > >[Event "38'/40+38'/40+38'/40"] >[Site "?"] >[Date "2005.10.06"] >[Round "?"] >[White "New game"] >[Black "?"] >[Result "*"] >[Annotator ",agur"] >[SetUp "1"] >[FEN "r2qrb1k/1p1b2p1/p2ppn1p/8/3NP3/1BN5/PPP3QP/1K3RR1 w - - 0 1"] >[PlyCount "13"] >[EventDate "2005.??.??"] >[TimeControl "40/2280:40/2280:40/2280"] > >1. e5 dxe5 (1... Nh5 2. Qg6 Qh4 (2... d5 3. Qxh5 Re7 4. Qg4) 3. Bc4 Nf4 4. Rxf4 >Qxf4 5. Bd3 Kg8 6. exd6) 2. Ne4 Nh5 (2... Ng8 3. Rxf8 Qe7 4. Rxe8 Bxe8 (4... >Rxe8) 5. Nxe6 Bc6 6. Qg6 Bxe4 7. Qxe4 Nf6 8. Qxe5) (2... g5 3. Nxg5 Qe7 4. >Ngxe6) 3. Qg6 Nf4 (3... exd4 4. Ng5 Qxg5 5. Rxg5) (3... Qe7 4. Qxh5) (3... Qh4 >4. Nf3) (3... Bb5 4. Nxe6 Rxe6 5. Qxe6) (3... Bc6 4. Nxc6 bxc6 5. Qxh5) (3... >a5 4. Qxh5 Re7 5. Rg6) (3... b6 4. Qxh5 Re7 5. Nf6) (3... b5 4. Qxh5 Re7 5. Nf6 >) (3... Rc8 4. Qxh5 Re7 5. Qxe5) (3... Rb8 4. Qxh5 Re7 5. Qxe5) 4. Rxf4 exf4 5. >Nf3 Qb6 6. Rg5 Qd8 (6... e5 7. Qxb6 Bc6 8. Nxe5 Bxe4 9. Qd4) 7. Ne5 * Yace really does have lovely output when annotating a game. Also, the printed analysis when it hits EGTB is the best that I have seen.
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