A very special testcase is the following sudoku:

9-6-7-4-3
---4--2--
-7--23-1-
5-----1--
-4-2-8-6-
--3-----5
-3-7---5-
--7--5---
4-5-1-7-8

[download]
which has two solutions: 
926571483
351486279
874923516
582367194
149258367
763194825
238749651
617835942
495612738

[download]
and 
926571483
351486279
874923516
582367194
149258367
763149825
238794651
617835942
495612738

[download]

Best regards,
perl -e "s>>*F>e=>y)\*martinF)stronat)=>print,print v8.8.8.32.11.32"

In reply to Re^3: Subroutine overhead in Perl by strat
in thread Subroutine overhead in Perl by enemyofthestate

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