+-----------------------------+
|            Liste            |
+-----------------------------+
|   -biest: String            |
|   -kette: Liste             |
+-----------------------------+
| erschlage( monster: String) |
| getDeathToll(): int         |
| hatErschlagen(): String     |
| biestNr(n: int): String     |
|                             |
| vergesse(monster: String)   |
+-----------------------------+


Die vergesse()-Methode:
=======================

[biest, kette]


[null,->] -> ["Hydra",->] -> ["Löwe",->] -> ["Minotaurus",->] -> ["Nessos",null]


[null,->] -> ["Hydra",->] -> ["Löwe",->] -                    -> ["Nessos",null]
                                          \__________________/



                             v- weiter
[null,->] -> ["Hydra",->] -> ["Löwe",->] -> ["Minotaurus",->] -> ["Nessos",null]
                               weiter.kette.biest == monster
                               weiter.kette = weiter.kette.kette