checkers pattern by kaki

(use srfi-1)(let((k(read))(l(read))(c'#0=(0 1 . #0#)))(map(lambda(i)(print(string-join(map x->string(take(if(odd? i)c(cdr c))l)))))(iota k)))

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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