40:
622:
163:
that searching the 7 best moves at each of the first two plies, and limiting the search depth to two would have done better than the default widths of "4 3 2 2 1 1 1 1", attempting eight plies in Kotok-McCarthy's
199:
By the time it was published in 1969 Mac Hack had played in eighteen tournaments and hundreds of complete games. The PDP-6 became an honorary member of the
Massachusetts State Chess Association and the
522:
411:
364:
332:
284:
118:
136:("Multi-Level Access Computer" or "Machine-Aided Cognition") a large sponsored research program located at MIT. The number VI refers to the
325:
61:
477:
450:
83:
610:
360:
106:
201:
148:
Greenblatt was inspired to write Mac Hack upon reading MIT Artificial
Intelligence Memo 41, or a similar document describing
184:
187:
donated to MIT (the first working PDP-6, serial number 2). Many versions may exist. During this period the program was
129:, and the first to win against a person in tournament play. A pseudocode for the program is given in Figure 11.16 of.
54:
48:
594:
242:
and was the first computer chess program to be widely distributed. Mac Hack was the first chess computer to use a
648:
65:
208:
Amateur
Championship. In 1967, the program played in four tournaments, winning three games, losing twelve, and
578:
543:
643:
251:
247:
383:
213:
27:
This article is about the computer chess program. For the
Macintosh software developers conference, see
243:
153:
223:
204:, a requirement for playing tournaments. In 1966 the program was rated 1243 when it lost in the
493:
473:
446:
280:
216:
176:
523:"A history of computer chess - from the "Mechanical Turk" to "Deep Blue" - High Tech History"
156:
in 1965. A good chess player, he was inspired to make improvements at MIT in 1965 and 1966.
396:
149:
102:
637:
205:
627:
255:
209:
126:
467:
440:
235:
133:
17:
617:
160:
172:
175:
that reflected his knowledge of chess. Mac Hack was written in MIDAS macro
125:
program to play in human tournament conditions, the first to be granted a
219:
of 1510 in game 3, tournament 2 of the
Massachusetts State Championship.
188:
544:"Richard Greenblatt and Thomas Knight with the CADR LISP Machine at MIT"
226:
in MIT Artificial
Intelligence Memo 174 and recorded some games there.
28:
573:
Richard
Greenblatt and Thomas Knight with the CADR LISP Machine at MIT
503:. Richard Greenblatt, Donald Eastlake III, Stephen Crocker. April 1969
239:
246:, which is a vital optimization in game tree search. Greenblatt and
180:
137:
122:
222:
Greenblatt published the program with Donald E. Eastlake III and
621:
168:
subroutine which generated each player's next plausible moves.
301:
33:
611:"Opening Moves: Origins of Computer Chess: 2.4 Getting Going"
593:
Pearson
Education, Addison-Wesley Professional (2006).
331:. Massachusetts Institute of Technology. Archived from
279:. Brattleboro, Vermont: Echo Point Books & Media.
212:
three. In 1967 Mac Hack VI defeated Ben Landy with a
579:"Computer History Museum accession number L02645385"
275:Newell, Allen; Simon, Herbert Alexander (2019).
577:Unknown photographer. Courtesy of MIT. (1978).
159:In about 2004, he had an opportunity to tell
8:
355:
353:
472:. Springer Science & Business Media.
445:. Springer Science & Business Media.
84:Learn how and when to remove this message
326:"A Chess Playing Program (AIM-41 - PDF)"
302:"Acronyms and Abbreviations Used at MIT"
47:This article includes a list of general
304:. Massachusetts Institute of Technology
267:
392:
381:
300:Snover, Janet and Bill Litant (n.d.).
501:Massachusetts Institute of Technology
466:Levy, David N. L. (6 December 2012).
119:Massachusetts Institute of Technology
7:
412:"Oral History of Richard Greenblatt"
410:Hendrie, Gardner (12 January 2005).
365:"Oral History of Richard Greenblatt"
140:machine for which it was written.
53:it lacks sufficient corresponding
25:
620:
609:Computer History Museum (n.d.).
38:
494:"The Greenblatt Chess Program"
202:United States Chess Federation
152:, which he saw while visiting
1:
121:. Mac Hack VI was the first
115:The Greenblatt Chess Program
665:
117:, it was developed at the
26:
442:Computer Chess Compendium
439:LEVY, D. (29 June 2013).
370:. Computer History Museum
191:about two hundred times.
419:Computer History Museum
252:artificial intelligence
171:Greenblatt added fifty
68:more precise citations.
391:Cite journal requires
361:Greenblatt, Richard D.
277:Human problem solving
107:Richard D. Greenblatt
595:"Donald E. Eastlake"
324:Kotok, Alan (n.d.).
238:, was ported to the
132:Its name comes from
548:computerhistory.org
363:(12 January 2005).
250:went on to advance
244:transposition table
234:Mac Hack played by
154:Stanford University
105:program written by
224:Stephen D. Crocker
286:978-1-63561-792-4
177:assembly language
94:
93:
86:
16:(Redirected from
656:
649:History of chess
630:
625:
624:
614:
605:
603:
601:
589:
587:
585:
559:
558:
556:
554:
540:
534:
533:
531:
529:
519:
513:
512:
510:
508:
498:
490:
484:
483:
469:Computer Games I
463:
457:
456:
436:
430:
429:
427:
425:
416:
407:
401:
400:
394:
389:
387:
379:
377:
375:
369:
357:
348:
347:
345:
343:
337:
330:
320:
314:
313:
311:
309:
297:
291:
290:
272:
167:
109:. Also known as
89:
82:
78:
75:
69:
64:this article by
55:inline citations
42:
41:
34:
21:
664:
663:
659:
658:
657:
655:
654:
653:
634:
633:
626:
619:
608:
599:
597:
592:
583:
581:
576:
568:
563:
562:
552:
550:
542:
541:
537:
527:
525:
521:
520:
516:
506:
504:
496:
492:
491:
487:
480:
465:
464:
460:
453:
438:
437:
433:
423:
421:
414:
409:
408:
404:
390:
380:
373:
371:
367:
359:
358:
351:
341:
339:
335:
328:
323:
321:
317:
307:
305:
299:
298:
294:
287:
274:
273:
269:
264:
232:
197:
195:Tournament play
165:
146:
90:
79:
73:
70:
60:Please help to
59:
43:
39:
32:
23:
22:
18:MacHack (chess)
15:
12:
11:
5:
662:
660:
652:
651:
646:
644:Chess software
636:
635:
632:
631:
616:
615:
606:
590:
567:
564:
561:
560:
535:
514:
485:
478:
458:
451:
431:
402:
393:|journal=
349:
338:on 6 July 2017
315:
292:
285:
266:
265:
263:
260:
254:and build the
231:
228:
196:
193:
150:Kotok-McCarthy
145:
142:
103:computer chess
92:
91:
46:
44:
37:
24:
14:
13:
10:
9:
6:
4:
3:
2:
661:
650:
647:
645:
642:
641:
639:
629:
623:
618:
612:
607:
596:
591:
580:
574:
570:
569:
565:
549:
545:
539:
536:
524:
518:
515:
502:
495:
489:
486:
481:
479:9781461387169
475:
471:
470:
462:
459:
454:
452:9781475719680
448:
444:
443:
435:
432:
420:
413:
406:
403:
398:
385:
366:
362:
356:
354:
350:
334:
327:
319:
316:
303:
296:
293:
288:
282:
278:
271:
268:
261:
259:
257:
253:
249:
245:
241:
237:
229:
227:
225:
220:
218:
215:
211:
207:
206:Massachusetts
203:
194:
192:
190:
186:
182:
178:
174:
169:
162:
157:
155:
151:
143:
141:
139:
135:
130:
128:
124:
120:
116:
112:
108:
104:
100:
96:
88:
85:
77:
67:
63:
57:
56:
50:
45:
36:
35:
30:
19:
628:Chess portal
598:. Retrieved
582:. Retrieved
572:
566:Bibliography
551:. Retrieved
547:
538:
526:. Retrieved
517:
505:. Retrieved
500:
488:
468:
461:
441:
434:
422:. Retrieved
418:
405:
384:cite journal
372:. Retrieved
340:. Retrieved
333:the original
318:
306:. Retrieved
295:
276:
270:
256:Lisp machine
233:
221:
198:
170:
158:
147:
131:
127:chess rating
114:
110:
98:
97:
95:
80:
71:
52:
600:26 December
584:29 December
342:26 December
308:29 December
144:Development
134:Project MAC
66:introducing
638:Categories
262:References
248:Tom Knight
173:heuristics
161:Alan Kotok
74:April 2010
49:references
258:in 1973.
230:Influence
183:computer
236:teletype
189:compiled
99:Mac Hack
571:Photo:
553:6 April
528:6 April
507:6 April
424:6 April
210:drawing
179:on the
111:Mac Hac
62:improve
29:MacHack
476:
449:
374:1 July
283:
240:PDP-10
217:rating
166:REPLYS
51:, but
497:(PDF)
415:(PDF)
368:(PDF)
336:(PDF)
329:(PDF)
181:PDP-6
138:PDP-6
123:chess
101:is a
602:2006
586:2006
555:2016
530:2016
509:2016
474:ISBN
447:ISBN
426:2016
397:help
376:2006
344:2006
310:2006
281:ISBN
214:USCF
113:and
185:DEC
640::
575:,
546:.
499:.
417:.
388::
386:}}
382:{{
352:^
613:.
604:.
588:.
557:.
532:.
511:.
482:.
455:.
428:.
399:)
395:(
378:.
346:.
322:*
312:.
289:.
87:)
81:(
76:)
72:(
58:.
31:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.