diff --git a/src/Go/Constants.ts b/src/Go/Constants.ts
index ff6a4e0a7..d0f6fb3de 100644
--- a/src/Go/Constants.ts
+++ b/src/Go/Constants.ts
@@ -68,7 +68,7 @@ export const opponentDetails = {
   },
 };
 
-export const boardSizes = [5, 7, 9, 13];
+export const boardSizes = [5, 7, 9, 13, 19];
 
 export const columnIndexes = "ABCDEFGHJKLMNOPQRSTUVWXYZ";
 
diff --git a/src/Go/ui/GoSubnetSearch.tsx b/src/Go/ui/GoSubnetSearch.tsx
index 8853c09d6..40ad0be59 100644
--- a/src/Go/ui/GoSubnetSearch.tsx
+++ b/src/Go/ui/GoSubnetSearch.tsx
@@ -18,6 +18,7 @@ interface IProps {
   cancel: () => void;
   showInstructions: () => void;
 }
+const boardSizeOptions = boardSizes.filter((size) => size !== 19);
 
 export const GoSubnetSearch = ({ open, search, cancel, showInstructions }: IProps): React.ReactElement => {
   const classes = boardStyles();
@@ -88,7 +89,7 @@ export const GoSubnetSearch = ({ open, search, cancel, showInstructions }: IProp
             <Typography>????</Typography>
           ) : (
             <Select value={`${boardSize}`} onChange={changeBoardSize} sx={{ mr: 1 }}>
-              {boardSizes.map((size) => (
+              {boardSizeOptions.map((size) => (
                 <MenuItem key={size} value={size}>
                   {size}x{size}
                 </MenuItem>