In Blue Prince, discovering the entrance to Room 46 is just one of many secrets awaiting players. The game is filled with various puzzles that may not directly contribute to your primary objectives. Engaging with these challenges not only enhances the gameplay experience but also provides valuable rewards. Moreover, players should not overlook the exploration opportunities presented even outside the Manor. One noteworthy spot is a staircase leading from the front door to a secluded balcony adorned with pipes. It is here that you can trigger blue flames, and the steps to activate them are outlined below.
Warning: Spoilers ahead; proceed with caution.
Guide to Activating All Blue Flames in Blue Prince

To ignite all four blue flames, players must locate and operate four distinct gas switches. None of these switches can be found inside the Manor; instead, you will need to explore the surrounding areas of Mount Holly Manor. The locations of the blue flame switches include the Apple Orchard, Gemstone Cavern, Hovel, and Schoolhouse. Any blue flames you activate will remain lit even if you begin a new day.
1. Apple Orchard

The Apple Orchard lies just outside the tent, yet access requires knowledge of the combination lock code for the gate. To illuminate the area, flip the switch located in the Utility Closet. Look for the date inscribed on a tree, which reads 11/28. Enter 1128 into the lock to gain entry into the Orchard. Upon entering, head to the left side where you will find a pipe with a switch attached.
2. Gemstone Cavern

Nearby the camp and the Apple Orchard, a mechanical door blocks access to the Gemstone Cavern. To bypass this obstacle, first locate the Utility Closet. Press the buttons below the V.A.C. Indicator label in this specific sequence: off, blue, green, white, red, purple. This will raise a wall, revealing a lever that, when pulled, grants entrance to the Gemstone Cavern. Upon entering, the second switch will be conveniently located to your right.
3. Hovel

Both the third and fourth flames can only be sourced from rooms drafted in the Outer Room slot, namely the Hovel and Schoolhouse. To access the Outer Room slot, players must discover the Utility Closet and the Garage within the Manor. In the Utility Closet, activate the circuit breaker by switching it to “On”for the Garage, allowing you to open the garage door and exit.

Continue along the path outside to find the entrance to the Outer Room. Upon reaching the Hovel, look for the switch for the third blue flame, conveniently located next to the stove.
Additionally, while outside, make an effort to unlock the west gate, as this allows for seamless access at the beginning of your next gaming session, eliminating the need to search for the Garage again.
4. Schoolhouse

Similar to the Hovel, the Schoolhouse is also available for drafting in the Outer Room. If either room is unavailable during your current session, you may have the chance to attempt again on another day. Once the Schoolhouse is accessible, locate the fourth switch positioned on the heater located centrally within the room.
Consequences of Activating All Four Blue Flames in Blue Prince

By successfully activating all four blue flames, an elevator will manifest. Notably, like other elements outside the Manor, this elevator does not reset. Ascending via this elevator provides access to a new area featuring a challenging Chess puzzle to solve.