diff --git a/unfinished/group.c b/unfinished/group.c
index 241da0e..6b9c4da 100644
--- a/unfinished/group.c
+++ b/unfinished/group.c
@@ -816,6 +816,22 @@ static const struct groups groups[] = {
 
 /* ----- data generated by group.gap ends ----- */
 
+static key_label *game_request_keys(const game_params *params, int *nkeys)
+{
+    int i;
+    key_label *keys = snewn(params->w, key_label);
+    *nkeys = params->w;
+
+    /* Sequence is either "eabcdf..." or "abcdef...", depending on
+     * params.id. */
+    for (i = 0; i < params->w; i++) {
+	keys[i].label = NULL;
+	keys[i].button = TOCHAR(i + 1, params->id);
+    }
+
+    return keys;
+}
+
 static char *new_game_desc(const game_params *params, random_state *rs,
 			   char **aux, bool interactive)
 {
@@ -2376,7 +2392,7 @@ const struct game thegame = {
     free_ui,
     NULL, /* encode_ui */
     NULL, /* decode_ui */
-    NULL, /* game_request_keys */
+    game_request_keys,
     game_changed_state,
     current_key_label,
     interpret_move,