General rules:
- The game is to help all passengers to cross the river.
- The boat can only take 2 passengers at a time.
- Only adults (Father, Mother, Farmer) can ride the boat.
- Animals and children cannot ride the boat.
Level 1
You have 4 passengers:
- a farmer
- a fox
- a chicken
- a worm
Level 1 rules:
- The farmer can only take one thing at a time.
- If the farmer leave the chicken and the worm unattended, the chicken will eat the grain.
- If the farmer leave the fox and the chicken unattended, the fox will eat the chicken.
Answer: 7 steps
Level 2
You have 6 passengers:
- A Father
- A Mother
- A Son
- A Daughter
- A Farmer
- A Wolf
Level 2 rules:
- The Farmer can only take one thing at a time.
- The Father cannot be left with the Daughter without the Mother present.
- The Mother cannot be left with the Son without the Father present.
- The Wolf cannot be left alone with the Son or Daughter or Father or Mother without the Farmer present.
Answer: 9 steps
Level 3
You have 8 passengers:
- A Father
- A Mother
- Elder Son – Adam
- Younger Son – Ben
- Elder Daughter – Cindy
- Younger Daughter – Daisy
- A Farmer
- A Wolf
Level 3 rules (same as level 2 with additional passengers):
- The Farmer can only take one thing at a time.
- The Father cannot be left with the Daughter without the Mother present.
- The Mother cannot be left with the Son without the Father present.
- The Wolf cannot be left alone with the Son or Daughter or Father or Mother without the Farmer present.
Answer: 17 steps