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truncated(?) labels for exponents http://www.calcudoku.org/forum/viewtopic.php?f=2&t=49 
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Author:  jaek [ Fri Jul 29, 2011 8:56 pm ] 
Post subject:  truncated(?) labels for exponents 
Today's difficult 8 was a little more difficult that usual for me. The three cell, Lshaped cage that starts in the seventh row is labeled "6^". That looks like 6^1^1 to me, so I entered 1,6,1 early on, but soon ran into a contradiction. It turns out that 1,6,1 is incorrect and that the label should be "216^". Oddly, both 1,6,1 and the correct triplet passed the puzzle's audits. A similar thing happened two or three weeks ago as well. Is anyone else experiencing this? Is anyone seeing the correct "216^" label? 
Author:  pnm [ Fri Jul 29, 2011 9:45 pm ] 
Post subject:  Re: truncated(?) labels for exponents 
jaek wrote: It turns out that 1,6,1 is incorrect and that the label should be "216^". Oddly, both 1,6,1 and the correct triplet passed the puzzle's audits. It's because the exponentiation evaluation is done from right to left. for 6, 1, 1: 6 ^ (1 ^ 1) = 6 ^ 1 = 6 for 6, 3, 1 (the solution in this case): 6 ^ (1 ^ 3) = 6 ^ 1 = 6 Patrick 
Author:  jaek [ Fri Jul 29, 2011 9:52 pm ] 
Post subject:  Re: truncated(?) labels for exponents 
pnm wrote: jaek wrote: It turns out that 1,6,1 is incorrect and that the label should be "216^". Oddly, both 1,6,1 and the correct triplet passed the puzzle's audits. It's because the exponentiation evaluation is done from right to left. for 6, 1, 1: 6 ^ (1 ^ 1) = 6 ^ 1 = 6 for 6, 3, 1 (the solution in this case): 6 ^ (1 ^ 3) = 6 ^ 1 = 6 Patrick Of course. I was so sure of my incorrect explanation that I couldn't see the fairly obvious correct one. Thanks. 
Author:  pnm [ Fri Jul 29, 2011 10:39 pm ] 
Post subject:  Re: truncated(?) labels for exponents 
jaek wrote: Of course. I was so sure of my incorrect explanation that I couldn't see the fairly obvious correct one. Thanks. I did switch a couple of months ago (was it April?) from lefttoright evaluation for exponentiation to the more common righttoleft though. So you're not completely crazy 
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