Greeting monks!

I am facing a problem in recognizing a pattern in 2 dimensional grid. 2D grid is represented by hash of hash (X,Y coordinate as key, and value). I need to recognize some patterns like (horizontal, vertical, or diagonal) example data (x,y coordinate and value (a,b,c,..)) 

recognize( pattern => 'horizontal', min => 3);  # recognize 3 or more 
+consecutive horizontal pattern
recognize( pattern => 'vertical',  min => 5);
    |a|a|b|a|c|
    |a|a|c|e|f|
    |e|f|a|1|b|

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In reply to Recognizing pattern in 2D grid by pwagyi

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