diff --git a/src/analysis.rs b/src/analysis.rs
index b80b99f..3ce647a 100644
--- a/src/analysis.rs
+++ b/src/analysis.rs
@@ -49,6 +49,20 @@ pub struct AnalysisParams {
     pub black_time: i32,
     pub white_inc: i32,
     pub black_inc: i32,
+    pub focus: Option<Move>,
+}
+
+impl AnalysisParams {
+    pub fn new() -> AnalysisParams {
+        AnalysisParams {
+            move_time: -1,
+            white_time: -1,
+            black_time: -1,
+            white_inc: -1,
+            black_inc: -1,
+            focus: None,
+        }
+    }
 }
 
 /// Analysis info to report.
@@ -105,6 +119,9 @@ impl Analyzer {
             self.log(format!("Analyzing node:\n{}", &self.node));
             let moves = self.node.get_player_moves();
             self.log(format!("Legal moves: {}", Move::list_to_uci_string(&moves)));
+            if let Some(focus) = &args.focus {
+                self.log(format!("Focus on: {}", focus.to_uci_string()));
+            }
             self.log(format!("Move time: {}", self.time_limit));
         }
 
diff --git a/src/engine.rs b/src/engine.rs
index 79822e3..68cf1ed 100644
--- a/src/engine.rs
+++ b/src/engine.rs
@@ -64,6 +64,8 @@ pub enum Cmd {
     WorkerBestMove(Option<Move>),
     /// Log current node.
     LogNode,
+    /// Log debug information about a move.
+    LogMove(Move),
 
     // Commands that can be sent by the engine.
 
@@ -127,15 +129,8 @@ impl Engine {
             Cmd::WorkerInfo(infos) => self.reply(Cmd::Info(infos.to_vec())),
             Cmd::WorkerBestMove(m) => self.reply(Cmd::BestMove(m.clone())),
             // Other commands.
-            Cmd::LogNode => {
-                let mut s = vec!();
-                self.node.board.draw_to(&mut s);
-                self.reply(Cmd::Log(format!(
-                    "Current node:\n{}{}",
-                    String::from_utf8_lossy(&s),
-                    self.node.game_state
-                )));
-            }
+            Cmd::LogNode => self.log_node(),
+            Cmd::LogMove(m) => self.log_move(m),
             _ => eprintln!("Not an engine input command: {:?}", cmd),
         }
     }
@@ -208,10 +203,7 @@ impl Engine {
     fn stop(&mut self) {
         self.working.store(false, atomic::Ordering::SeqCst);
     }
-}
 
-/// UCI commands management.
-impl Engine {
     /// Setup engine for UCI communication.
     pub fn setup_uci(&mut self, uci_s: mpsc::Sender<uci::Cmd>) {
         // Create a channel to receive commands from Uci.
@@ -241,13 +233,7 @@ impl Engine {
 
     /// Start working using parameters passed with a "go" command.
     fn uci_go(&mut self, g_args: &Vec<uci::GoArgs>) {
-        let mut args = analysis::AnalysisParams {
-            move_time: -1,
-            white_time: -1,
-            black_time: -1,
-            white_inc: -1,
-            black_inc: -1,
-        };
+        let mut args = analysis::AnalysisParams::new();
         for arg in g_args {
             match arg {
                 uci::GoArgs::MoveTime(ms) => args.move_time = *ms,
@@ -261,4 +247,22 @@ impl Engine {
         }
         self.work(&args);
     }
+
+    /// Log current node information.
+    fn log_node(&mut self) {
+        let mut s = vec!();
+        self.node.board.draw_to(&mut s);
+        self.reply(Cmd::Log(format!(
+            "Current node:\n{}{}",
+            String::from_utf8_lossy(&s),
+            self.node.game_state
+        )));
+    }
+
+    /// Log a move information.
+    fn log_move(&mut self, m: &Move) {
+        let mut args = analysis::AnalysisParams::new();
+        args.focus = Some(m.clone());
+        self.work(&args);
+    }
 }
diff --git a/src/uci.rs b/src/uci.rs
index 0dee8a8..29a580d 100644
--- a/src/uci.rs
+++ b/src/uci.rs
@@ -60,6 +60,7 @@ pub enum UciCmd {
 
     // Unofficial commands mostly for debugging.
     VatuNode,
+    VatuMove(String),
 
     Unknown(String),
 }
@@ -205,6 +206,9 @@ impl Uci {
             UciCmd::VatuNode => {
                 self.send_engine_command(engine::Cmd::LogNode);
             }
+            UciCmd::VatuMove(m) => {
+                self.send_engine_command(engine::Cmd::LogMove(Move::from_uci_string(m)));
+            }
             UciCmd::Unknown(c) => { self.log(format!("Unknown command: {}", c)); }
         }
         true
@@ -316,6 +320,7 @@ fn parse_command(s: &str) -> UciCmd {
         "go" => parse_go_command(&fields[1..]),
         "quit" => UciCmd::Quit,
         "vatunode" => UciCmd::VatuNode,
+        "vatumove" => UciCmd::VatuMove(fields[1].to_string()),
         c => UciCmd::Unknown(c.to_string()),
     }
 }