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diff --git a/challenge-103/duncan-c-white/OptimizingTask1 b/challenge-103/duncan-c-white/OptimizingTask1
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-tried some optimizations of task 1 (rare numbers).  All times are for n==8 or 9
-I used Devel::NYTProf to profile each version, then made small optimizations,
-then reprofiled.  See "run.sh" for how to run a particular version through
-the profiler, generate the report, and copy it into a web-accessible directory
-for viewing:
-
-ch-1.pl:	the original, not optimized
-	time(8):	0:34.31
-	time(9):        5:56:10
-
-ch-1a.pl:	observation from rare numbers webpage ("Properties of.."
-		section): rare numbers start with even top digit
-	time(8):   0:24.46
-	time(9):   4:10.61
-
-ch-1b.pl:	only consider rare numbers starting with even top digit..
-	time(8):   0:15.35 
-	time(9):   2:44.34
-
-ch-1c.pl: 	lots of optimizations, especially 3 separate rare block
-		functions: rareblock(), rareblock05() and rareblock2378().
-	time(8):   0:06.35
-	time(9):   1:06.64
-
-ch-1d.pl: lots more optimizations, especially: rather than generate x and
-		test x%10 == d, generate y (1/10th the range) and make
-		x = 10y + d: 1/10th the work, but same x's as before
-	time(8):   0:03.92
-	time(9):   0:40.21
-
-ch-1e.pl: inlined israre() into the slowest rareblock2378() func
-	time(8):   0:03.39
-	time(9):   0:34.49
-
-ch-1f.pl: inlined israre() into the next slowest rareblock05() func
-	time(8):   0:03.12
-	time(9):   0:31.47
-
-ch-1g.pl: inlined israre() into the last rareblock() func
-	time(8):   0:02.94
-	time(9):   0:28.79
-
-ch-1h.pl: inlined perfectsquare() everywhere
-	time(8):   0:02.15
-	time(9):   0:21.20
-
-ch-1i.pl: reintroduced israre() but with two inlined calls to perfectsquare()
-	sweet spot: clear, shows problem structure nicely, plus pretty fast
-	time(8):   0:03.23
-	time(9):   0:32.34