diff --git a/core/src/record.rs b/core/src/record.rs
index 39f896b..679542e 100644
--- a/core/src/record.rs
+++ b/core/src/record.rs
@@ -133,7 +133,7 @@ fn now_string() -> String {
 }
 
 fn is_leap_year(y: u64) -> bool {
-    (y % 4 == 0 && y % 100 != 0) || (y % 400 == 0)
+    (y.is_multiple_of(4) && !y.is_multiple_of(100)) || y.is_multiple_of(400)
 }
 
 #[cfg(test)]
diff --git a/gui/Cargo.toml b/gui/Cargo.toml
index faec539..ac4c1a7 100644
--- a/gui/Cargo.toml
+++ b/gui/Cargo.toml
@@ -15,3 +15,5 @@ tauri-plugin-opener = "2"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 gobang-core = { path = "../core" }
+log = "0.4"
+env_logger = "0.11"
diff --git a/gui/src/commands.rs b/gui/src/commands.rs
index df64fce..b1ba63a 100644
--- a/gui/src/commands.rs
+++ b/gui/src/commands.rs
@@ -33,6 +33,7 @@ impl Default for AppState {
 pub fn new_game(mode: GameMode, config: GameConfig, state: State<AppState>) -> Result<(), String> {
     let is_vs_ai = mode == GameMode::VsAi;
     let board = Board::new(config.board_size);
+    log::info!("新游戏: mode={:?}, board_size={}", mode, config.board_size);
     *state.board.lock().map_err(|e| e.to_string())? = Some(board);
     *state.game_mode.lock().map_err(|e| e.to_string())? = mode;
     *state.config.lock().map_err(|e| e.to_string())? = config.clone();
@@ -82,6 +83,10 @@ pub fn place_piece(x: usize, y: usize, state: State<AppState>) -> Result<MoveRes
     *state.current_color.lock().map_err(|e| e.to_string())? = color.opponent();
     *state.game_over.lock().map_err(|e| e.to_string())? = is_win;
 
+    if is_win {
+        log::info!("游戏结束: 胜者={:?}", color);
+    }
+
     Ok(MoveResult {
         position: pos,
         is_win,
diff --git a/gui/src/lib.rs b/gui/src/lib.rs
index ff0308f..7790b14 100644
--- a/gui/src/lib.rs
+++ b/gui/src/lib.rs
@@ -4,6 +4,7 @@ use commands::AppState;
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
+    log::info!("Tauri 应用初始化完成");
     tauri::Builder::default()
         .plugin(tauri_plugin_opener::init())
         .manage(AppState::default())
diff --git a/gui/src/main.rs b/gui/src/main.rs
index 2cd64a5..d6019dc 100644
--- a/gui/src/main.rs
+++ b/gui/src/main.rs
@@ -2,5 +2,7 @@
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 
 fn main() {
+    env_logger::init();
+    log::info!("Gobang v2.0 启动");
     gobang_gui::run()
 }