diff --git a/www/js/game.js b/www/js/game.js
index 6ff00ec..8b30524 100644
--- a/www/js/game.js
+++ b/www/js/game.js
@@ -391,7 +391,7 @@ GAME.Game = class {
                 // Handle alt moves.
                 if(play.source == 3) {
                     switch(moves.alt) {
-                        case 0: {
+                        case 1: {
                             piece.promoted = false;
                         } break;
                     }
@@ -595,7 +595,7 @@ GAME.Game = class {
                     // Check all tiles if not blocking.
                     if(block_directions == 0) {
                         for(let i = 0; i < GAME_DATA.board.tiles.length; ++i) {
-                            if(this.placable_tile(piece, i)) {
+                            if(this.placable_tile(piece, i, {check:false})) {
                                 tiles.push(new GAME.MovementTile(i, true, false, 0, 0));
                             }
                         }
@@ -758,9 +758,8 @@ GAME.Game = class {
 
             // Check if position puts king in check.
             let checking = false;
-            let movements = [ ];
+            let movements = this.movement_tiles(piece, tile_id, true);
             if(params.check !== false) {
-                movements = this.movement_tiles(piece, tile_id, true);
                 for(let movement of movements) {
                     if(movement.check) {
                         checking = true;
diff --git a/www/js/interface.js b/www/js/interface.js
index 234ffce..9d3f7f6 100644
--- a/www/js/interface.js
+++ b/www/js/interface.js
@@ -436,7 +436,7 @@ const INTERFACE = {
             }
             if(GAME_DATA.turn > 0 && (play.source < 2 || play.source == 3) && (play.to == i || ((play.source == 0 || play.source == 3) && play.from == i))) {
                 ctx.fillStyle = INTERFACE.Color.HintPlay;
-            } else if(GAME_DATA.state.check != 0 && piece !== null && piece.piece == GAME.Const.PieceId.Source && piece.player == (GAME_DATA.turn & 1)) {
+            } else if(GAME_DATA.state.check != 0 && piece !== null && piece.piece == GAME.Const.PieceId.Heart && piece.player == (GAME_DATA.turn & 1)) {
                 ctx.fillStyle = INTERFACE.Color.HintCheck;
             }
             switch(hover_state) {