The Coin puzzle in Silent Hill 2 is one of the most famous puzzles in the game, as it is one that has been present since the game was first released on the PlayStation 2. If you've made it into the Wood Side Apartments in Silent Hill 2, an early-game area, then you'll want to know how to solve this puzzle. This puzzle is available on both 'Standard' and 'Hard' difficulty.
Here is everything you need to know about the Coin Puzzle in Silent Hill 2, including where to find the coins in the game to be able to complete the puzzle.
In total, there are three coins that you will need to collect. You'll need the Man Coin, the Woman Coin, and the Snake Coin. You are most likely going to find the Man Coin first, which is inside the safe in Room 206. There is a tiny puzzle for this, which is relatively easy, and all you need to do is match the numbers on the wall with the descriptions from the story on a different wall. Once you've entered the code successfully, you'll be given the Man Coin and the Steel Key.
To get the Woman Coin, you'll need to unblock the rubbish chute. To do so, you'll need to find the Canned Juice in the laundry room, which is accessed by crawling through a gap in the wall to be able to get to Room 312. Then, you'll have to take the journey back to the rubbish chute and put the Canned Juice in there, which will cause it to unlodge and fall on the ground outside the eastern rubbish chute. The eastern rubbish chute is located 1F between Room 112 and Room 105.
The third and final coin is inside the pram in the empty pool on the west side of 1F. While you could stand there and kill every enemy (which is unnecessary unless you're going for achievements), running into the pool, getting the coin, and then running straight back out is recommended. They will quickly lose interest in you, and you'll be able to return back to get the cabinet to solve the puzzle.