docs(NIP-64): add chess to title

make clear that the nip is about chess

2 files changed, 4 insertions, 2 deletions

diff --git a/64.md b/64.md
index dd6ee84..6d8d373 100644
--- a/64.md
+++ b/64.md
@@ -1,12 +1,12 @@
 NIP-64
 ======
 
-Portable Game Notation
+Chess (Portable Game Notation)
 -----
 
 `draft` `optional`
 
-This NIP defines `kind:64` notes representing games in [PGN][pgn_specification] format, which can be read by humans and is also supported by most chess software.
+This NIP defines `kind:64` notes representing chess games in [PGN][pgn_specification] format, which can be read by humans and is also supported by most chess software.
 
 ## Note
 
diff --git a/README.md b/README.md
index d6840fc..82778f8 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,7 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
 - [NIP-57: Lightning Zaps](57.md)
 - [NIP-58: Badges](58.md)
 - [NIP-59: Gift Wrap](59.md)
+- [NIP-64: Chess (PGN)](64.md)
 - [NIP-65: Relay List Metadata](65.md)
 - [NIP-70: Protected Events](70.md)
 - [NIP-71: Video Events](71.md)
@@ -115,6 +116,7 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
 | `42`          | Channel Message                 | [28](28.md)                            |
 | `43`          | Channel Hide Message            | [28](28.md)                            |
 | `44`          | Channel Mute User               | [28](28.md)                            |
+| `64`          | Chess (PGN)                     | [64](64.md)                            |
 | `818`         | Merge Requests                  | [54](54.md)                            |
 | `1021`        | Bid                             | [15](15.md)                            |
 | `1022`        | Bid confirmation                | [15](15.md)                            |