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function functions.check(array)
    local cont = {hor_right = 1,hor_left = 1,ver_up = 1,ver_down = 1,dia_up_inc = 1,dia_up_dec = 1,dia_down_inc = 1,dia_down_dec = 1};
    local completed = true;
    local s = "";
    for y = #array.table , 1,-1 do
        for x = 1, #array.table[y] do
            if array.table[y][x] == "" then completed = false; end --board completed
            if array.table[y][x] != "" then
                s = array.table[y][x]
                for i = 1, array.n-1 do
                    if fb(array,x+i,y) and array.table[y][x+i] == s then cont.hor_right = cont.hor_right+1 end
                    if fb(array,x,y+i) and array.table[y+i][x] == s then cont.ver_down = cont.ver_down+1 end
                    if fb(array,x-i,y) and array.table[y][x-i] == s then cont.hor_left = cont.hor_left+1 end
                    if fb(array,x,y-i) and array.table[y-i][x] == s then cont.ver_up = cont.ver_up+1 end
                    if fb(array,x+i,y-i) and array.table[y-i][x+i] == s then cont.dia_up_dec = cont.dia_up_dec + 1 end
                    if fb(array,x-i,y-i) and array.table[y-i][x-i] == s then cont.dia_up_inc = cont.dia_up_inc + 1 end
                    if fb(array,x+i,y+i) and array.table[y+i][x+i] == s then cont.dia_down_inc = cont.dia_down_inc + 1 end
                    if fb(array,x-i,y+i) and array.table[y+i][x-i] == s then cont.dia_down_dec = cont.dia_down_dec+1 end
                end
                if cont.hor_right >= array.n then return s end cont.hor_right = 1;
                if cont.hor_left >= array.n then return s end cont.hor_left = 1;
                if cont.ver_up >= array.n then return s end cont.ver_up = 1;
                if cont.ver_down >= array.n then return s end cont.ver_down = 1;
                if cont.dia_up_inc >= array.n then return s end cont.dia_up_inc = 1;
                if cont.dia_down_inc >= array.n then return s end cont.dia_down_inc = 1;
                if cont.dia_up_dec >= array.n then return s end cont.dia_up_dec = 1;
                if cont.dia_down_dec >= array.n then return s end cont.dia_down_dec = 1;
                cont = {hor_right = 1,hor_left = 1,ver_up = 1,ver_down = 1,dia_up_inc = 1,dia_up_dec = 1,dia_down_inc = 1,dia_down_dec = 1};

            end
        end
    end
    return completed;
end