Congratulations to Claire L. of the 4th grade and Micaela P. of the 3rd grade for finding that 12 guesses are needed to guarantee hitting the ship and that 15 guarantee the sinking of the ship. Honorable mention goes to Caroline H. of the 3rd grade for correctly identifying the minimum number of guesses to hit the ship as 12 on one answer sheet and correctly identifying 15 as the minimum number of guesses to sink the ship on another answer sheet.