you need to write `Bb2`, see https://stacker.news/items/755150 or the [reference](https://en.wikipedia.org/wiki/Algebraic_notation_(chess)#Notation_for_moves) linked in @chess' profile

_you can continue the game from there as normal_

![](https://m.stacker.news/61280)

## Chess Notation

### Piece Representation

- **King**: `K`
- **Queen**: `Q`
- **Rook**: `R`
- **Bishop**: `B`
- **Knight**: `N`
- **Pawn**: No letter (just the move)

### Move Types

- **Standard Move (Piece to Square):** `Nf3` (Knight to f3)
- **Pawn Move:** `e4` (Pawn to e4)
- **Capturing Moves:**
  - **Pawn Capturing:** `exd4` (Pawn on e-file captures on d4)
  - **Piece Capturing:** `Nxd4` (Knight captures on d4)
    - **File Ambiguity:** `Nfxd4` (Knight from f-file captures on d4)
    - **Rank Ambiguity:** `N3xd4` (Knight from rank 3 captures on d4)
    - **Both Ambiguous:** `Nf3xd4` (Knight from f3 captures on d4)
- **Castling:**
  - **Kingside:** `O-O`
  - **Queenside:** `O-O-O`
- **Pawn Promotion:** `a8=Q` (Pawn moves to a8 and promotes to Queen)
- **Check:** Add `+` after the move, e.g., `Nf7+`

that's ok, once the game starts you only need to type the move, like b2 in the comment.