diff --git a/public/algorithms/mix-tree.js b/public/algorithms/mix-tree.js
index 5f0e671..89ed534 100644
--- a/public/algorithms/mix-tree.js
+++ b/public/algorithms/mix-tree.js
@@ -11,6 +11,7 @@
  * @property {number} maxTreeDepth
  * @property {Array<string>} ignoredAttributes
  * @property {string} algorithm
+ * @property {boolean} unfoldOnce
  */
 
 /**
@@ -28,6 +29,8 @@ function buildDecisionTreeMix(_builder) {
     maxTreeDepth,
     ignoredAttributes,
     algorithm,
+    unfoldOnce = false,
+    runOnce = false,
     allClasses,
   } = builder;
 
@@ -123,7 +126,7 @@ function buildDecisionTreeMix(_builder) {
   }
 
   //LEAF
-  if (match.length === 0 || notMatch.length === 0) {
+  if (match.length === 0 || notMatch.length === 0 || runOnce) {
     //console.log('Liść bo Lewa/Prawa wynosi 0');
     let _category = mostFrequentValue(trainingSet, categoryAttr);
     let _positiveCounter = 0;
@@ -143,6 +146,12 @@ function buildDecisionTreeMix(_builder) {
     };
   }
 
+  if (unfoldOnce) {
+    console.log(unfoldOnce, unfoldOnce === false);
+    console.log('Match/NotMatch');
+    builder.runOnce = true;
+  }
+
   builder.maxTreeDepth = maxTreeDepth - 1;
   builder.trainingSet = match;
   var matchSubTree = buildDecisionTreeMix(builder); //savesubtreesinfothreshold
diff --git a/src/components/Node/Leaf.jsx b/src/components/Node/Leaf.jsx
index 225c3c9..21f6026 100644
--- a/src/components/Node/Leaf.jsx
+++ b/src/components/Node/Leaf.jsx
@@ -62,43 +62,76 @@ function Leaf({ category, matchedCount, notMatchedCount, quality, requestLeafUnf
         flexWrap="wrap-reverse"
         alignItems="flex-end"
       >
-        <Box boxShadow="md">
+        <Box>
           {isNotModify ? (
             <div></div>
           ) : (
-            <Menu closeOnSelect closeOnBlur isLazy>
-              {/* <Tooltip hasArrow label="Unfold to node" bg="yellow.500" placement="right"> */}
-              <MenuButton
-                fontSize="sm"
-                w={100}
-                h={6}
-                as={Button}
-                rightIcon={<ChevronDownIcon />}
-                //bg={'#009c72'}
-                // _hover={{
-                //   bg: '#00402f',
-                // }}
-                // _active={{
-                //   bg: '#00402f',
-                // }}
-                bg={'#1560ab'}
-                _hover={{
-                  bg: '#005069',
-                }}
-                _active={{
-                  bg: '#005069',
-                }}
-                color={'white'}
-              >
-                Unfold all
-              </MenuButton>
-              {/* </Tooltip> */}
-              <MenuList>
-                <MenuItem onClick={() => requestLeafUnfold(['c45'])}>C 4.5</MenuItem>
-                <MenuItem onClick={() => requestLeafUnfold(['tsp'])}>TSP</MenuItem>
-                <MenuItem onClick={() => requestLeafUnfold(['tspw'])}>TSP Weight</MenuItem>
-              </MenuList>
-            </Menu>
+            <Box display={'flex'} flexDirection={'column'}>
+              <Menu closeOnSelect closeOnBlur isLazy>
+                <MenuButton
+                  fontSize="sm"
+                  w={110}
+                  h={6}
+                  as={Button}
+                  rightIcon={<ChevronDownIcon />}
+                  bg={'#1560ab'}
+                  _hover={{
+                    bg: '#005069',
+                  }}
+                  _active={{
+                    bg: '#005069',
+                  }}
+                  color={'white'}
+                  marginBottom={1}
+                  textAlign={'left'}
+                  paddingLeft={'13px'}
+                >
+                  Unfold once
+                </MenuButton>
+                {/* </Tooltip> */}
+                <MenuList>
+                  <MenuItem onClick={() => requestLeafUnfold(['c45'], true)}>C 4.5</MenuItem>
+                  <MenuItem onClick={() => requestLeafUnfold(['tsp'], true)}>TSP</MenuItem>
+                  <MenuItem onClick={() => requestLeafUnfold(['tspw'], true)}>TSP Weight</MenuItem>
+                </MenuList>
+              </Menu>
+              <Menu closeOnSelect closeOnBlur isLazy>
+                {/* <Tooltip hasArrow label="Unfold to node" bg="yellow.500" placement="right"> */}
+                <MenuButton
+                  fontSize="sm"
+                  w={110}
+                  h={6}
+                  as={Button}
+                  rightIcon={<ChevronDownIcon />}
+                  paddingLeft={1}
+                  paddingRight={1}
+                  textAlign={'left'}
+                  //bg={'#009c72'}
+                  // _hover={{
+                  //   bg: '#00402f',
+                  // }}
+                  // _active={{
+                  //   bg: '#00402f',
+                  // }}
+                  bg={'#1560ab'}
+                  _hover={{
+                    bg: '#005069',
+                  }}
+                  _active={{
+                    bg: '#005069',
+                  }}
+                  color={'white'}
+                >
+                  Unfold all
+                </MenuButton>
+                {/* </Tooltip> */}
+                <MenuList>
+                  <MenuItem onClick={() => requestLeafUnfold(['c45'])}>C 4.5</MenuItem>
+                  <MenuItem onClick={() => requestLeafUnfold(['tsp'])}>TSP</MenuItem>
+                  <MenuItem onClick={() => requestLeafUnfold(['tspw'])}>TSP Weight</MenuItem>
+                </MenuList>
+              </Menu>
+            </Box>
           )}
         </Box>
         <Box fontWeight="700" fontSize={30}>
diff --git a/src/components/Node/index.jsx b/src/components/Node/index.jsx
index 7ea0a73..1b84ab7 100644
--- a/src/components/Node/index.jsx
+++ b/src/components/Node/index.jsx
@@ -108,12 +108,13 @@ const Node = props => {
     props.requestChildChange(foldResult);
   };
 
-  const unfoldLeaf = algorithm => {
+  const unfoldLeaf = (algorithm, unfoldOnce = false) => {
     setLoading(true);
     executeAlgorithm({
       ...builderConfig,
       trainingSet: node.trainingSet2,
       algorithm,
+      unfoldOnce,
     })
       .then(value => {
         setNode(value);
diff --git a/src/utils/algorithm-executor.js b/src/utils/algorithm-executor.js
index 270db8b..a0bc216 100644
--- a/src/utils/algorithm-executor.js
+++ b/src/utils/algorithm-executor.js
@@ -9,14 +9,14 @@ const workersMap = {
 export function executeAlgorithm(options, changeOptions = {}) {
   //console.log(changeOptions);
   return new Promise((resolve, reject) => {
-    //console.time(options.algorithm);
-    let worker;
-    if (options.algorithm.length > 1) {
-      console.log('mix');
-      worker = new Worker(`algorithms/${workersMap.mix}-tree.js`);
-    } else {
-      worker = new Worker(`algorithms/${workersMap[options.algorithm[0]]}-tree.js`);
-    }
+    console.time('options.unfold.Once', options.unfoldOnce);
+    let worker = new Worker(`algorithms/${workersMap.mix}-tree.js`);
+    // if (options.algorithm.length > 1) {
+    //   console.log('mix');
+    //   worker = new Worker(`algorithms/${workersMap.mix}-tree.js`);
+    // } else {
+    //   worker = new Worker(`algorithms/${workersMap[options.algorithm[0]]}-tree.js`);
+    // }
     worker.onmessage = ({ data }) => {
       console.log('got a result', data);
       resolve(data);