Added modifications applied during testing.

Arctic_Nigthmare/src/arctic_nightmare/Board.java

Arctic_Nigthmare/src/arctic_nightmare/Eskimo.java

Arctic_Nigthmare/src/arctic_nightmare/Event.java

Arctic_Nigthmare/src/arctic_nightmare/Explorer.java

Arctic_Nigthmare/src/arctic_nightmare/Field.java

Arctic_Nigthmare/src/arctic_nightmare/FragileShovel.java

Arctic_Nigthmare/src/arctic_nightmare/Game.java

Arctic_Nigthmare/src/arctic_nightmare/IceBear.java

Arctic_Nigthmare/src/arctic_nightmare/Item.java

Arctic_Nigthmare/src/arctic_nightmare/Logger.java

Arctic_Nigthmare/src/arctic_nightmare/Main.java

Arctic_Nigthmare/src/arctic_nightmare/Person.java

...c_Nigthmare/src/arctic_nightmare/PlayerDiedException.java

...c_Nigthmare/src/arctic_nightmare/PlayersWinException.java

Arctic_Nigthmare/src/arctic_nightmare/StableField.java

Arctic_Nigthmare/src/arctic_nightmare/UnstableField.java