1 files changed, 3 insertions(+), 2 deletions(-)

M isabella/src/index/position.rs

@@ 9,9 9,10 @@ use crate::game::StartingPosition;
 
 const AVG_MOVES_PER_GAME: usize = 20;
 
-/// We use a 128-bit Zobrist hash for collision resistance. A 64-bit hash should
+/// We use a 64-bit Zobrist hash for collision resistance. A 64-bit hash should
 /// suffice in most situations (up to 4B positions before a collision is
-/// expected) but erring on the side of caution and loading lots of data.
+/// expected), but we can increase to 128-bit if we need to for larger
+/// datasets.
 pub type BoardHash = u64;
 
 /// PositionIndex is a UniqueFixedIndex which contains Zobrist hashes of