diff --git a/game/src/lib.rs b/game/src/lib.rs
index c040248..b0cc187 100644
--- a/game/src/lib.rs
+++ b/game/src/lib.rs
@@ -591,7 +591,7 @@ impl Game {
         /*
         ** Filter valid tiles from allowed.
         */
-        println!("C2");
+        println!("C2 {} {} {}", piece.class, piece.promoted, piece_moves.alt.is_some());
         if let Some(alt_mode) = piece_moves.alt {
             println!("C3 {}", alt_mode);
             match alt_mode {