Cheater

local col={0,0,0,0}
local row= {0,0,0,0}
local row1= {0,0,0,0}
local row2= {0,0,0,0}
local row3= {0,0,0,0}
local row4= {0,0,0,0}

local function checkrow(txt,n,tabled)
    for count =1,9,1 do
        nq, n = string.gsub(txt,tostring(count),"#")
        if n>=2 then return false end
    end
    local sum=0
    for _, v in pairs(tabled) do
        if tonumber(v) then
            sum = sum+v
        end
    end
    if sum == n then return true end
    return false
end
while true do

   if checkrow(table.concat(row1),row[1],row1)== false then goto continue end
   if checkrow(table.concat(row2),row[2],row2)== false then goto continue end
   if checkrow(table.concat(row3),row[3],row3)== false then goto continue end
   if checkrow(table.concat(row4),row[4],row4)== false then goto continue end

   ::continue::
end