diff --git a/xwords4/android/XWords4/jni/xwjni.c b/xwords4/android/XWords4/jni/xwjni.c
index a370e73fd..4c85b0a33 100644
--- a/xwords4/android/XWords4/jni/xwjni.c
+++ b/xwords4/android/XWords4/jni/xwjni.c
@@ -1022,6 +1022,17 @@ Java_org_eehouse_android_xw4_jni_XwJNI_board_1focusChanged
     return result;
 }
 
+JNIEXPORT jboolean JNICALL
+Java_org_eehouse_android_xw4_jni_XwJNI_board_1canFlip
+( JNIEnv* env, jclass C, jint gamePtr )
+{
+    jboolean result;
+    XWJNI_START();
+    result = board_canFlip( state->game.board );
+    XWJNI_END();
+    return result;
+}
+
 JNIEXPORT jboolean JNICALL
 Java_org_eehouse_android_xw4_jni_XwJNI_board_1handleKey
 ( JNIEnv* env, jclass C, jint gamePtr, jobject jkey, jboolean jup, 
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/XwJNI.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/XwJNI.java
index eca79734b..9267a58c3 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/XwJNI.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/XwJNI.java
@@ -146,6 +146,7 @@ public class XwJNI {
     public static native String board_formatRemainingTiles( int gamePtr );
     public static native int board_getFocusOwner( int gamePtr );
     public static native boolean board_focusChanged( int gamePtr, int typ );
+    public static native boolean board_canFlip( int gamePtr );
 
     public enum XP_Key {
         XP_KEY_NONE,