# Challenge Rating *Source: Player's Handbook (2024) p. 363. Available in the Free Rules (2024)* Challenge Rating (CR) summarizes the threat a [Monster](monster-xphb.md) poses to a group of four [Player Character](player-character-xphb.md). Compare a [Monster](monster-xphb.md) CR to the characters' level. If the CR is higher, the [Monster](monster-xphb.md) is likely a danger. If the CR is lower, the [Monster](monster-xphb.md) likely poses little threat. But circumstances and the number of [Player Character](player-character-xphb.md) can significantly alter how threatening a [Monster](monster-xphb.md) is in actual play. The "Dungeon Master's Guide" provides guidance to the DM on using CR while planning potential combat [Encounter](encounter-xphb.md).