diff --git a/turtle/kikori.lua b/turtle/kikori.lua
new file mode 100644
index 0000000..886ce15
--- /dev/null
+++ b/turtle/kikori.lua
@@ -0,0 +1,179 @@
+-- アイテムの定義
+BIRCH_SAPLING = "minecraft:birch_sapling"  -- 白樺の苗木
+BIRCH_LOG = "minecraft:birch_log"          -- 白樺の原木
+COBBLESTONE = "minecraft:cobblestone"      -- 丸石
+CHEST = "minecraft:chest" -- チェスト
+STICK = "minecraft:stick" -- 木の棒
+BONE_MEAL_ID = "minecraft:bone_meal" -- 骨粉
+
+ROW_COUNT = 5
+ALL_COUNT = 15
+ueta = 0
+
+-- 指定されたアイテムIDのスロットを探して選択する
+function findItem(itemId)
+    for slot = 1, 16 do
+        local item = turtle.getItemDetail(slot)
+        if item and item.name == itemId then
+            turtle.select(slot)
+            return true
+        end
+    end
+    return false
+end
+
+-- 指定されたアイテムIDを移動する
+function dropItem (itemId)
+    if findItem (itemId) then
+        turtle.drop()
+        return true
+    else
+        return false
+    end
+end
+
+-- 骨粉が手持ちにあれば使用する。
+function useBoneMeal()
+    if findItem("minecraft:bone_meal") then
+        turtle.place()
+        return true
+    else
+        return false
+    end
+end
+
+-- 木を上方向に向かって切る
+function kikori()
+    if not turtle.dig() then return false end
+    if not turtle.forward() then return false end
+    local k_count = 0
+    
+    while true do
+        local success, data = turtle.inspectUp()
+        if success and data and data.name == BIRCH_LOG then
+            if not turtle.digUp() then break end
+            if not turtle.up() then break end
+            k_count = k_count + 1
+        else
+            -- 地上に戻る
+            for i = 1, k_count do
+                if not turtle.down() then break end
+            end
+            if not turtle.back() then return false end
+            ueru()
+            break
+        end
+    end
+    return true
+end
+
+-- 苗木を植える
+function ueru()
+    if findItem(BIRCH_SAPLING) then
+        if turtle.place() then
+            ukai()
+            return true
+        end
+    end
+    return false
+end
+
+-- 次の位置に移動（障害物があれば回避）
+function ukai()
+    if not turtle.up() then return false end
+    
+    -- 前方の移動（2ブロック）で障害物があれば掘る
+    for i = 1, 2 do
+        if turtle.detect() then
+            turtle.dig()
+        end
+        if not turtle.forward() then return false end
+    end
+    
+    if not turtle.down() then return false end
+    return true
+end
+
+-- 安全な前進（障害物があれば掘る）
+function safeForward()
+    if turtle.detect() then
+        local success, block = turtle.inspect()
+        if success and block then
+            if block.name == BIRCH_LOG then
+                turtle.dig()
+            end
+        end
+    end
+    return turtle.forward()
+end
+
+-- メインプログラム
+
+print("Current inventory:")
+
+local sayuu_f = 1
+safeForward() -- 最初の一歩
+
+while true do
+    -- エリアの終了判定
+    if ueta == ALL_COUNT then
+        local success, block = turtle.inspect()
+        if success and block and block.name == CHEST then
+            dropItem(BIRCH_LOG)
+            dropItem(STICK)
+        end
+        turtle.turnRight()
+        turtle.turnRight()
+        ueta = 0
+    end
+    
+    -- 苗木の確認
+    if not findItem(BIRCH_SAPLING) then
+        print("Error: No saplings left")
+        break
+    end
+    
+    -- 列の終わりの処理
+    if ueta ~= 0 and ueta % ROW_COUNT == 0 then
+        safeForward()
+        
+        if sayuu_f == 1 then
+            turtle.turnRight()
+            for i = 1, 6 do
+                safeForward()
+            end
+            turtle.turnRight()
+        else
+            turtle.turnLeft()
+            for i = 1, 6 do
+                safeForward()
+            end
+            turtle.turnLeft()
+        end
+        sayuu_f = -sayuu_f
+    end
+    
+    safeForward()
+    turtle.suck()
+    
+    -- 丸石の確認と作業実行
+    local success, block = turtle.inspectDown()
+    if success and block and block.name == COBBLESTONE then
+        -- 原木があれば伐採
+        local front_success, front_block = turtle.inspect()
+        if front_success and front_block and front_block.name == BIRCH_LOG then
+            kikori()
+        elseif not turtle.detect() then
+            ueru()
+        end
+        
+        -- 苗木があれば次の位置へ
+        local sapling_success, sapling_block = turtle.inspect()
+        if sapling_success and sapling_block and sapling_block.name == BIRCH_SAPLING then
+            ukai()
+        end
+        
+        ueta = ueta + 1
+    end
+    print("Total planted:", ueta)
+end