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Like this

print for map{ join '|', map sprintf( "%02d", $_ ), $_*8+1 .. $_*8+8 } + 0 .. 7;; 01|02|03|04|05|06|07|08 09|10|11|12|13|14|15|16 17|18|19|20|21|22|23|24 25|26|27|28|29|30|31|32 33|34|35|36|37|38|39|40 41|42|43|44|45|46|47|48 49|50|51|52|53|54|55|56 57|58|59|60|61|62|63|64

Or perhaps this comes closer to your "one loop" ideal?:

print for unpack '(A24)*', join'|','01' .. '64', '';; 01|02|03|04|05|06|07|08| 09|10|11|12|13|14|15|16| 17|18|19|20|21|22|23|24| 25|26|27|28|29|30|31|32| 33|34|35|36|37|38|39|40| 41|42|43|44|45|46|47|48| 49|50|51|52|53|54|55|56| 57|58|59|60|61|62|63|64|

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
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In reply to Re: Chess Board Single Loop by BrowserUk
in thread Chess Board Single Loop by xantithor

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