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The result is diamond 5 Reason: 1 Mr. P said he don't know means spade J,8,2,7,3; club k,6 are out. 2.Mr. Q said he know Mr P are unknown means the pattern is heart or diamond. Because if the pattern is spade or club it is possible to be spade J,8,2,7,3; club k,6. That means Mr. P maybe know the result. So Mr. Q said that. 3.Now the result is among heart A,Q,4 and diamond A,5. Mr. P said he know it now means the result is not ''A'', and the result may be heart Q,4 or diamond 5. Mr. P can confirm it, but we can not. 4.Mr. Q said he know it means the result is diamond 5. Because if the pattern he had is heart he could not confirm it(It may be Q or 4). Since he siad he know it ,the result must be diamond 5 It's a good game! very good! | 
