My Math Forum What's the "trick"?

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 April 17th, 2013, 07:52 AM #1 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038 What's the "trick"?
 April 17th, 2013, 04:12 PM #2 Math Team     Joined: Jul 2011 From: North America, 42nd parallel Posts: 3,372 Thanks: 233 Re: What's the "trick"? Nice, how can 63 squares turn into 66 squares?
April 17th, 2013, 04:44 PM   #3
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Re: What's the "trick"?

Quote:
 Originally Posted by agentredlum Nice, how can 63 squares turn into 66 squares?
Cut one in quarters?

 April 17th, 2013, 07:26 PM #4 Math Team   Joined: Apr 2012 Posts: 1,579 Thanks: 22 Re: What's the "trick"? Biertijd indeed
 April 17th, 2013, 10:59 PM #5 Math Team     Joined: Jul 2011 From: North America, 42nd parallel Posts: 3,372 Thanks: 233 Re: What's the "trick"? I wonder what we would see if we had the overhead view, there may be a gap along the 'sliding diagonal' after he reassembles the object with the 3 tiles missing. We can't see it because of the perspective offered (delberately) I have seen other rearrangements where you get more squares but the ones i've seen have different figures, he appears to get more squares out of the same figure.
 April 18th, 2013, 04:16 AM #6 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038 Re: What's the "trick"? Somebody noticed this: Notice edit at 0:37. The 2nd piece removed is substituted with bigger piece. See how badly the uper edge lines up on the mat, compared to in frame. The rest is done with slightly discontinuous straight lines. Nice effect!
 April 18th, 2013, 07:23 AM #7 Global Moderator     Joined: Nov 2009 From: Northwest Arkansas Posts: 2,766 Thanks: 4 Re: What's the "trick"? I noticed two edits, at basically the same place in the construction/deconstruction
April 18th, 2013, 01:51 PM   #8
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Re: What's the "trick"?

Quote:
 Originally Posted by The Chaz I noticed two edits, at basically the same place in the construction/deconstruction
Yup , I also realized that , I think the trick was to replace it with a bigger one !

 April 18th, 2013, 03:04 PM #9 Math Team     Joined: Jul 2011 From: North America, 42nd parallel Posts: 3,372 Thanks: 233 Re: What's the "trick"? I see the edits but i don't notice a size change between the board and the grid. He shakes the completed board 3 times. The 1st and 3rd times the shaking is identical as far as the gaps are concerned. The 2nd time with the 3 pieces removed, the gaps are slightly but noticeably larger. This leads me to think the man is legit. He somehow transferred the difference in area to the sides of the board so all you need is a long thin strip somewhere, (possibly a few long thin strips) to make up for the areas of the redacted pieces. I want to see the overhead perspective. Also, the bottom side closest to him doesn't look to be parallel to the top.

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