What is the conflict of the westing game?

The conflict in "The Westing Game" by Ellen Raskin revolves around the mysterious death of Samuel W. Westing, a wealthy businessman, and the sixteen heirs who are tasked with solving the puzzle of his murder to inherit his fortune. The main conflict is the competition and suspicion among the heirs as they work together in pairs to unravel the clues and secrets hidden within the game. Additionally, there is an underlying conflict of deception and hidden identities that adds complexity to the plot and keeps the reader guessing until the final reveal.