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based on the strength of the engines, but the differences in style provided an interesting match with several decisive games and many fighting draws. For some time, Zappa was considered one of the two strongest commercially available chess programs; see engine rating lists like
651:, programs that had won the championship many times. In the speed chess portion of the tournament Zappa placed second, after Shredder. Zappa's other tournament successes include winning
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Immediately after the successful WCCC 2005, there were plans to commercialize Zappa, but the first attempts with
Vincent Diepeveen failed. In April 2006, a commercial version dubbed
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In June 2010, Zach Wegner announced that he had acquired the rights to maintain and improve the Zappa engine. The improved engine competed in the 2010
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Despite Zappa being a relative newcomer, it managed to win the tournament and in general caused a bit of a stir in the computer chess community.
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Here Zappa played Re1, threatening Qxa5 Rxa5 Rxe8#; the game continued 43... Qf6 (if Rxe1 then Qg7#) 44. Rxe5 Qxe5 45. Ba2+ Kh8 46. Rd8 1–0.
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In March 2008 Anthony Cozzie announced that "the Zappa project is 100% finished", which includes both tournaments and future releases.
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computers with up to 512 CPU cores and supports multipv analysis and
Nalimov
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1335:"Rybka disqualified and banned from World Computer Chess Championships"
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for current rankings. Some speculate that Zappa's more efficient
601:. The program emphasizes sound search and a good use of multiple
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parallel search could make it stronger on enough processors.
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placed first but the program was found to have plagiarized
188:
609:) and the current version (Zappa Mexico) is available at
1331:'ed runner-up in 2005), and was stripped of its title. (
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In Mexico in
September 2007 Zappa won a match against
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The version of Zappa that won the Zappa-Rybka match,
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written by
Anthony Cozzie, a graduate student at the
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121:
109:
93:
67:
45:
35:
605:. Earlier versions of Zappa are free (though not
1196:"13th World Computer Chess Championship (Blitz)"
779:
1047:
1045:
560:
8:
693:. Many commentators had predicted a slew of
30:
1537:13th World Computer Championship (WCCC2005)
1501:Beyond Deep Blue: Chess in the Stratosphere
1529:
1419:"World Computer Chess Champion: Zap!Chess"
599:University of Illinois at Urbana-Champaign
567:
553:
154:
29:
1074:"13th World Computer Chess Championship"
41:Anthony Cozzie, Zach Wegner (since 2010)
1128:. rpijl.home.xs4all.nl/. Archived from
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1285:http://computerchess.org.uk/ccrl/4040/
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724:before the latter's disqualification.
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815:
621:Zappa scored an upset victory at the
229:Efficiently updatable neural networks
158:This article is part of the series on
7:
1495: (archived September 18, 2012)"
25:
1543: (archived November 22, 2005)
623:World Computer Chess Championship
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720:, achieving second place behind
234:Handcrafted evaluation functions
170:
1029:Zappa vs Crafty, WCCC 2005, 1-0
633:where it won with a score of 10
1261:"Match vs Rybka - Mexico 2007"
1:
1337:. Chess Vibes. Archived from
1552:Java Viewer of Zappa's games
1512:. Retrieved 26 October 2013.
1547:Anthony Cozzie's Zappa page
1398:"Re: Zappa Retail: No UCI?"
776:Zappa vs Crafty, WCCC 2005
249:Stochastic gradient descent
76:; 15 years ago
1593:
299:Principal variation search
643:out of 11, and beat both
89:
74:Zappa Mexico II / 2009
63:
1100:"WCCC 2005 Photojournal"
1498:Newborn, Monty (2011).
753:Shredder Computer Chess
611:Shredder Computer Chess
309:Monte Carlo tree search
1557:Zappa at shredderchess
1489:Zappa official website
419:Dragon by Komodo Chess
244:Reinforcement learning
51:; 19 years ago
1362:"Zach, is this true?"
1126:"WCCC 2005 Reykjavik"
755:, is compatible with
264:Unsupervised learning
182:Board representations
49:February 2, 2005
659:(ICC) and defeating
625:in August, 2005, in
607:open-source software
214:Deep neural networks
207:Evaluation functions
18:Zappa (Chess engine)
1562:Clash of the Titans
1299:. Netfiles.uiuc.edu
657:Internet Chess Club
254:Supervised learning
239:Piece-square tables
32:
1132:on 26 October 2013
736:running under the
294:Alpha-beta pruning
1510:978-0-85729-341-1
1462:Cozzie, Anthony.
1396:Cozzie, Anthony.
1341:on March 30, 2014
1259:Cozzie, Anthony.
1098:Cozzie, Anthony.
1020:
1019:
728:Commercialization
577:
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304:Quiescence search
283:search algorithms
164:Chess programming
153:
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100:Microsoft Windows
16:(Redirected from
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1333:Doggers, Peter.
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1297:"Anthony Cozzie"
1293:
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1283:engine ratings:
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1106:on 22 March 2012
1102:. Archived from
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46:Initial release
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1517:External links
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1053:"Zappa Mexico"
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1464:"Great moves"
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771:Notable games
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751:, is sold by
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1504:. Springer.
1500:
1467:. Retrieved
1457:
1445:. Retrieved
1435:
1423:. Retrieved
1413:
1401:. Retrieved
1391:
1377:
1365:. Retrieved
1356:
1343:. Retrieved
1339:the original
1312:
1301:. Retrieved
1291:
1276:
1264:. Retrieved
1254:
1242:. Retrieved
1233:
1221:. Retrieved
1212:
1200:. Retrieved
1190:
1178:. Retrieved
1168:
1156:. Retrieved
1146:
1134:. Retrieved
1130:the original
1120:
1108:. Retrieved
1104:the original
1078:. Retrieved
1068:
1056:. Retrieved
749:Zappa Mexico
748:
746:
733:
731:
717:
711:
708:
668:
664:Jaan Ehlvest
620:
595:chess engine
588:Zappa Mexico
587:
583:
579:
578:
538:
354:Deep Thought
334:ChessMachine
259:Texel tuning
218:Transformers
116:Chess engine
37:Developer(s)
1443:. ChessBase
1441:"Zap!Chess"
1421:. ChessBase
661:Grandmaster
409:CuckooChess
399:Chess Tiger
128:Proprietary
1469:27 October
1447:26 October
1425:26 October
1403:26 October
1367:26 October
1303:2012-06-20
1266:26 October
1244:26 October
1223:26 October
1202:26 October
1180:26 October
1158:26 October
1152:"Shredder"
1136:26 October
1110:26 October
1080:26 October
1058:26 October
1036:References
765:tablebases
603:processors
479:MChess Pro
414:Deep Fritz
344:Cray Blitz
56:2005-02-02
742:ChessBase
738:Fritz GUI
734:Zap!Chess
627:Reykjavík
584:Zap!Chess
534:Turochamp
524:Stockfish
519:SmarThink
464:KnightCap
439:GNU Chess
424:Fairy-Max
394:AlphaZero
349:Deep Blue
224:Attention
194:Bitboards
1571:Category
1239:"Report"
1174:"Junior"
649:Shredder
509:Shredder
369:Mephisto
339:ChipTest
1539:at the
1491:at the
1482:Sources
1385:. ICGA.
1383:"Zappa"
1345:29 June
757:Windows
688:⁄
678:⁄
655:on the
638:⁄
631:Iceland
617:History
590:, is a
484:Mittens
449:Houdini
289:Minimax
134:Website
123:License
79: (
54: (
1508:
1321:Crafty
1198:. IGCA
1176:. IGCA
1154:. IGCA
1076:. IGCA
645:Junior
489:MuZero
469:Komodo
459:Junior
454:Ikarus
444:HIARCS
404:Crafty
374:Saitek
359:HiTech
145:/zappa
1327:(the
1325:Fruit
1317:Rybka
761:Linux
722:Rybka
718:Rondo
695:draws
671:Rybka
666:3-1.
580:Zappa
539:Zappa
529:Torch
514:Sjeng
504:Rybka
499:REBEL
434:Fruit
429:Fritz
364:Hydra
329:Belle
277:Graph
141:.acoz
104:Linux
31:Zappa
1506:ISBN
1471:2013
1449:2013
1427:2013
1405:2013
1369:2013
1347:2011
1323:and
1281:CCRL
1268:2013
1246:2013
1225:2013
1204:2013
1182:2013
1160:2013
1138:2013
1112:2013
1082:2013
1060:2013
759:and
714:WCCC
700:CCRL
653:CCT7
647:and
494:Naum
281:tree
279:and
189:0x88
143:.net
111:Type
81:2009
1329:GPL
704:SMP
683:- 4
592:UCI
586:or
139:www
1573::
1090:^
1044:^
767:.
744:.
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