Find the key and decipher this ciphertext which was encrypted via a Playfair cipher. Carefully explain your analysis of this cipher in detail.
K H O N U R T H B N M P O P F R S B O N U V S E D K T H R X R G U V B A H A A E P N T H O M E Z B H A V A H F A G T O A G Q O B E S R U S B B L B R K G K H B G A U L B S H K H N P O M P E E S M S L Z K N R I G L T N U A K C T H P O O M U M H M M F S H O N M P A U T Q T H P M C H U K S Z P U U R B P H R N P K C T H P O H B U K B E A O N E Z G M Z S B R P V P L R B L W D N E T N U O R E B U P Y N P N E M Z P O O B U S B V Q U B V A E M Z P O O B A F A H U A G Z H P T Z O B A H U A F Z O N R B U N O N O N L B B E P O H P I Z I K B I V U F E K H N Z P O I K O R K G U E E V U Y K U R X U K B N O P L A B P A I S A Z R K G E R U X O V O R E Y U H Z G K G O N A B E Q Y C E S N S N E S G M U U B G T S A L R X R N C N O O N U V S E D K G T F Q S H R M U R E Q Z U H R U M G U M T R T M H P O V I G Z V S L A B P A I S A W F G T B Q B S F R P E R T I X N E S Z P E G U K G S B S E V S L A B P A I S A R S R M U R E Q U I N P N W A H T P G S O B V P A R G L Q M H T P Z N E Z G H R U M G U U P A X D K S B S E V S E C A P V I G Z O P B A O N U A V U G U K G S B S E O N R B A U L B S H S B N R M G K H E R R X V I A O O B F R P E E A U B N P N W A H T P G R H R U M G U S E I P P N V A M T S B O N U V S E D K R T H Q C R T O O B T R H R I K B N T O G T G L L F T P M Y S A A H N Z N E K G T R F U M C P I U V I K B I V U R T H Q M R P E U P O N G N Q V Q B B P M T I P A H B U P E E S K A R Y L A U A U V E A C X N P K V I K T O S E Z S O B C M T G U K L C B A S B P E L F R V L B Q R A O R P B T B S A S N O Q E U E G Q O B R E K G V U E Q E B R T M K T N I K O F R U T S P M T N G T B K M P O B U Q C E Q N H T U P T N O N G Z O B A U T H U E A S N B Q B P Y S E M N R P Q Z S A L R V F B V L A P V M G K H E R T U A E F A U T M O S B O N U H T G A C L A E R L G F L R O T P C M V O M G H L K T H A F X