diff --git a/modules/coreI18n/src/main/key.scala b/modules/coreI18n/src/main/key.scala
index a2fff7e4c57d6..8b666ef065c6f 100644
--- a/modules/coreI18n/src/main/key.scala
+++ b/modules/coreI18n/src/main/key.scala
@@ -1274,6 +1274,8 @@ object I18nKey:
     val `interferenceDescription`: I18nKey = "puzzleTheme:interferenceDescription"
     val `intermezzo`: I18nKey = "puzzleTheme:intermezzo"
     val `intermezzoDescription`: I18nKey = "puzzleTheme:intermezzoDescription"
+    val `killBoxMate`: I18nKey = "puzzleTheme:killBoxMate"
+    val `killBoxMateDescription`: I18nKey = "puzzleTheme:killBoxMateDescription"
     val `knightEndgame`: I18nKey = "puzzleTheme:knightEndgame"
     val `knightEndgameDescription`: I18nKey = "puzzleTheme:knightEndgameDescription"
     val `long`: I18nKey = "puzzleTheme:long"
diff --git a/modules/puzzle/src/main/PuzzleTheme.scala b/modules/puzzle/src/main/PuzzleTheme.scala
index 3e4a3bd2ca130..8dacb99dc2d7f 100644
--- a/modules/puzzle/src/main/PuzzleTheme.scala
+++ b/modules/puzzle/src/main/PuzzleTheme.scala
@@ -49,6 +49,7 @@ object PuzzleTheme:
   val interference   = PuzzleTheme(i.interference, i.interferenceDescription)
   val intermezzo     = PuzzleTheme(i.intermezzo, i.intermezzoDescription)
   val kingsideAttack = PuzzleTheme(i.kingsideAttack, i.kingsideAttackDescription)
+  val killBoxMate    = PuzzleTheme(i.killBoxMate, i.killBoxMateDescription)
   val knightEndgame  = PuzzleTheme(i.knightEndgame, i.knightEndgameDescription)
   val long           = PuzzleTheme(i.long, i.longDescription)
   val master         = PuzzleTheme(i.master, i.masterDescription)
@@ -139,6 +140,7 @@ object PuzzleTheme:
       doubleBishopMate,
       dovetailMate,
       hookMate,
+      killBoxMate,
       smotheredMate
     ),
     I18nKey.puzzle.specialMoves -> List(
diff --git a/public/images/puzzle-themes/killBoxMate.svg b/public/images/puzzle-themes/killBoxMate.svg
new file mode 100644
index 0000000000000..d354b91eaebbd
--- /dev/null
+++ b/public/images/puzzle-themes/killBoxMate.svg
@@ -0,0 +1 @@
+<svg style="height: 512px; width: 512px;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><g class="" style="" transform="translate(0,0)"><path d="M246.253 280.552l71.99 97.834-166.207 48.293zm.274-37.243L138.877 97.006 21 279.83l107.65 146.3 114.21-177.108zm162.63 9.728l34.46-53.457-38.665 11.226v33.426zm-115.097-2.12l-10.515-4.89-18.56 5.388-7.17 11.126 77.33 105.143 31.99-49.628-20.28-42.88zm45.55-88.33h65.405v27.44l44.9-13.06L342.254 30.566 154.83 85.02l107.712 146.39 77.055-22.45v-46.373zm45.45 86.06v-66.105h-25.507v49.49l-13.533-5.1-34.012 10.277 49.89 22.937 104.62 221.287 24.482-7.11z" fill="#7f7f7f" fill-opacity="1"></path></g></svg>
\ No newline at end of file
diff --git a/translation/source/puzzleTheme.xml b/translation/source/puzzleTheme.xml
index 3ae2dd556eb57..dfaa121997ba2 100644
--- a/translation/source/puzzleTheme.xml
+++ b/translation/source/puzzleTheme.xml
@@ -57,6 +57,8 @@
   <string name="interferenceDescription">Moving a piece between two opponent pieces to leave one or both opponent pieces undefended, such as a knight on a defended square between two rooks.</string>
   <string name="intermezzo">Intermezzo</string>
   <string name="intermezzoDescription">Instead of playing the expected move, first interpose another move posing an immediate threat that the opponent must answer. Also known as "Zwischenzug" or "In between".</string>
+  <string name="killBoxMate">Kill box mate</string>
+  <string name="killBoxMateDescription">A rook is next to the enemy king and supported by a queen that also blocks the king's escape squares. The rook and the queen catch the enemy king in a 3 by 3 "kill box".</string>
   <string name="knightEndgame">Knight endgame</string>
   <string name="knightEndgameDescription">An endgame with only knights and pawns.</string>
   <string name="long">Long puzzle</string>
diff --git a/ui/@types/lichess/i18n.d.ts b/ui/@types/lichess/i18n.d.ts
index 5c27b24b9eebc..c0b9bfdf82756 100644
--- a/ui/@types/lichess/i18n.d.ts
+++ b/ui/@types/lichess/i18n.d.ts
@@ -2471,6 +2471,10 @@ interface I18n {
     intermezzo: string;
     /** Instead of playing the expected move, first interpose another move posing an immediate threat that the opponent must answer. Also known as "Zwischenzug" or "In between". */
     intermezzoDescription: string;
+    /** Kill box mate */
+    killBoxMate: string;
+    /** A rook is next to the enemy king and supported by a queen that also blocks the king's escape squares. The rook and the queen catch the enemy king in a 3 by 3 "kill box". */
+    killBoxMateDescription: string;
     /** Kingside attack */
     kingsideAttack: string;
     /** An attack of the opponent's king, after they castled on the king side. */