diff --git a/Readme.md b/Readme.md
index ef8671d..36b45ae 100644
--- a/Readme.md
+++ b/Readme.md
@@ -21,8 +21,7 @@ It's very lean and does not take much storage space (Roughly 0.1MB).
 If the app stutters, turn on "fast mode" in the settings to render a simplified view that should be faster.
 There's also an easy mode for kids (slower ball).
  
-# Todo
-- ascetism red coins
+# Todo 
 - strict sample size red borders ? 
 - zen : red border on bombs
 - add marching ants effect + disable animation toggle
diff --git a/dist/index.html b/dist/index.html
index 5979b0b..ae708a4 100644
--- a/dist/index.html
+++ b/dist/index.html
@@ -2689,7 +2689,7 @@ function explosionAt(gameState, index, x, y, ball) {
             if (gameState.bricks[i] && i !== -1) {
                 // Study bricks resist explosions too
                 gameState.brickHP[i]--;
-                if (gameState.brickHP <= 0) explodeBrick(gameState, i, ball, true);
+                if (gameState.brickHP[i] <= 0) explodeBrick(gameState, i, ball, true);
             }
         }
     }
@@ -3629,10 +3629,11 @@ let cachedBricksRender = document.createElement("canvas");
 let cachedBricksRenderKey = "";
 function renderAllBricks() {
     ctx.globalAlpha = 1;
-    const redBorderOnBricksWithWrongColor = (0, _game.gameState).combo > (0, _gameStateMutators.baseCombo)((0, _game.gameState)) && (0, _game.gameState).perks.picky_eater && !(0, _options.isOptionOn)("basic");
-    const redColorOnAllBricks = !!((0, _game.gameState).lastPuckMove && (0, _game.gameState).perks.passive_income && (0, _game.gameState).combo > (0, _gameStateMutators.baseCombo)((0, _game.gameState)) && (0, _game.gameState).lastPuckMove > (0, _game.gameState).levelTime - 250 * (0, _game.gameState).perks.passive_income);
+    const hasCombo = (0, _game.gameState).combo > (0, _gameStateMutators.baseCombo)((0, _game.gameState));
+    const redBorderOnBricksWithWrongColor = hasCombo && (0, _game.gameState).perks.picky_eater && !(0, _options.isOptionOn)("basic");
+    const redColorOnAllBricks = !!((0, _game.gameState).lastPuckMove && (0, _game.gameState).perks.passive_income && hasCombo && (0, _game.gameState).lastPuckMove > (0, _game.gameState).levelTime - 250 * (0, _game.gameState).perks.passive_income);
     let offset = getDashOffset((0, _game.gameState));
-    if (!(redBorderOnBricksWithWrongColor || redColorOnAllBricks || (0, _game.gameState).perks.reach)) offset = 0;
+    if (!(redBorderOnBricksWithWrongColor || redColorOnAllBricks || (0, _game.gameState).perks.reach || (0, _game.gameState).perks.zen)) offset = 0;
     const clairVoyance = (0, _game.gameState).perks.clairvoyant && (0, _game.gameState).brickHP.reduce((a, b)=>a + b, 0);
     const newKey = (0, _game.gameState).gameZoneWidth + "_" + (0, _game.gameState).bricks.join("_") + bombSVG.complete + "_" + redBorderOnBricksWithWrongColor + "_" + redColorOnAllBricks + "_" + (0, _game.gameState).ballsColor + "_" + (0, _game.gameState).perks.pierce_color + "_" + clairVoyance + '_' + offset;
     if (newKey !== cachedBricksRenderKey) {
@@ -3648,7 +3649,7 @@ function renderAllBricks() {
             const x = (0, _gameUtils.brickCenterX)((0, _game.gameState), index), y = (0, _gameUtils.brickCenterY)((0, _game.gameState), index);
             if (!color) return;
             let redBecauseOfReach = (0, _game.gameState).perks.reach && (0, _gameUtils.countBricksAbove)((0, _game.gameState), index) && !(0, _gameUtils.countBricksBelow)((0, _game.gameState), index);
-            let redBorder = (0, _game.gameState).ballsColor !== color && color !== "black" && redBorderOnBricksWithWrongColor || redBecauseOfReach || redColorOnAllBricks;
+            let redBorder = (0, _game.gameState).ballsColor !== color && color !== "black" && redBorderOnBricksWithWrongColor || hasCombo && (0, _game.gameState).perks.zen && color === 'black' || redBecauseOfReach || redColorOnAllBricks;
             canctx.globalCompositeOperation = "source-over";
             drawBrick(canctx, color, x, y, redBorder ? offset : -1);
             if ((0, _game.gameState).brickHP[index] > 1 && (0, _game.gameState).perks.clairvoyant) {
diff --git a/src/gameStateMutators.ts b/src/gameStateMutators.ts
index 557d55b..e36838e 100644
--- a/src/gameStateMutators.ts
+++ b/src/gameStateMutators.ts
@@ -284,7 +284,7 @@ export function explosionAt(
         if (gameState.bricks[i] && i !== -1) {
           // Study bricks resist explosions too
           gameState.brickHP[i]--;
-          if (gameState.brickHP <= 0) {
+          if (gameState.brickHP[i] <= 0) {
             explodeBrick(gameState, i, ball, true);
           }
         }
diff --git a/src/render.ts b/src/render.ts
index 635785c..74bbe52 100644
--- a/src/render.ts
+++ b/src/render.ts
@@ -406,19 +406,20 @@ let cachedBricksRenderKey = "";
 export function renderAllBricks() {
     ctx.globalAlpha = 1;
 
+    const hasCombo=gameState.combo > baseCombo(gameState)
     const redBorderOnBricksWithWrongColor =
-        gameState.combo > baseCombo(gameState) &&
+        hasCombo &&
         gameState.perks.picky_eater &&
         !isOptionOn("basic");
 
     const redColorOnAllBricks = !!(gameState.lastPuckMove &&
         gameState.perks.passive_income &&
-        gameState.combo > baseCombo(gameState) &&
+        hasCombo &&
         gameState.lastPuckMove >
         gameState.levelTime - 250 * gameState.perks.passive_income)
 
     let offset = getDashOffset(gameState)
-    if (!(redBorderOnBricksWithWrongColor || redColorOnAllBricks || gameState.perks.reach)) {
+    if (!(redBorderOnBricksWithWrongColor || redColorOnAllBricks || gameState.perks.reach || gameState.perks.zen)) {
         offset = 0
     }
 
@@ -442,7 +443,7 @@ export function renderAllBricks() {
         "_" +
         clairVoyance + '_' + offset;
 
-    if (newKey !== cachedBricksRenderKey) {
+    if (newKey !== cachedBricksRenderKey ) {
         cachedBricksRenderKey = newKey;
 
         cachedBricksRender.width = gameState.gameZoneWidth;
@@ -468,7 +469,7 @@ export function renderAllBricks() {
             let redBorder =
                 (gameState.ballsColor !== color &&
                     color !== "black" &&
-                    redBorderOnBricksWithWrongColor) ||
+                    redBorderOnBricksWithWrongColor) || (hasCombo && gameState.perks.zen && color==='black')||
                 redBecauseOfReach || redColorOnAllBricks;
 
             canctx.globalCompositeOperation = "source-over";