diff --git a/kadai3-1/yoheimiyamoto/README.md b/kadai3-1/yoheimiyamoto/README.md
new file mode 100644
index 0000000..f17eb64
--- /dev/null
+++ b/kadai3-1/yoheimiyamoto/README.md
@@ -0,0 +1,4 @@
+タイピングゲームを作ろう
+標準出力に英単語を出す（出すものは自由）
+標準入力から1行受け取る
+制限時間内に何問解けたか表示する
diff --git a/kadai3-1/yoheimiyamoto/main.go b/kadai3-1/yoheimiyamoto/main.go
new file mode 100644
index 0000000..86f67f1
--- /dev/null
+++ b/kadai3-1/yoheimiyamoto/main.go
@@ -0,0 +1,13 @@
+package main
+
+import (
+	"os"
+
+	"github.com/YoheiMiyamoto/dojo4/kadai3-1/yoheimiyamoto/pingpong"
+)
+
+func main() {
+	words := []string{"one", "two", "three", "four", "five"}
+	pingpong.Play(os.Stdin, os.Stdout, words)
+
+}
diff --git a/kadai3-1/yoheimiyamoto/pingpong/doc.go b/kadai3-1/yoheimiyamoto/pingpong/doc.go
new file mode 100644
index 0000000..3312dd2
--- /dev/null
+++ b/kadai3-1/yoheimiyamoto/pingpong/doc.go
@@ -0,0 +1,5 @@
+/*
+Package pingpong ...
+
+*/
+package pingpong
diff --git a/kadai3-1/yoheimiyamoto/pingpong/pingpong.go b/kadai3-1/yoheimiyamoto/pingpong/pingpong.go
new file mode 100644
index 0000000..8daa115
--- /dev/null
+++ b/kadai3-1/yoheimiyamoto/pingpong/pingpong.go
@@ -0,0 +1,65 @@
+package pingpong
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"time"
+)
+
+// Play ...
+// words -> 出題するワード一覧
+func Play(r io.Reader, w io.Writer, words []string) {
+	inputCh := make(chan string)
+	scoreCh := make(chan score)
+
+	input(r, inputCh)
+
+	fmt.Fprintln(w, "ゲームスタート！制限時間は5秒！")
+	go game(w, words, inputCh, scoreCh)
+
+	s := <-scoreCh
+	fmt.Fprintln(w, "ゲーム終了")
+	fmt.Fprintln(w, s.Result())
+}
+
+func game(w io.Writer, words []string, inputCh <-chan string, scoreCh chan<- score) {
+	var s score
+
+	go func() {
+		select {
+		case <-time.After(5 * time.Second):
+			fmt.Fprintln(w, "タイムアウト！")
+			scoreCh <- s
+		}
+	}()
+
+	for {
+		// wordsをすべて回答したらゲームを終了させる
+		if s.count() == len(words) {
+			scoreCh <- s
+			break
+		}
+		word := words[s.count()]
+		fmt.Fprintln(w, word)
+		i := <-inputCh
+		if i == word {
+			fmt.Fprintln(w, "正解！")
+			s.addCorrect()
+		} else {
+			fmt.Fprintln(w, "不正解！")
+			s.addIncorrect()
+		}
+	}
+}
+
+// 標準入力から受け取ったテキストをchチャネルに送信。
+func input(r io.Reader, ch chan<- string) {
+	scanner := bufio.NewScanner(r)
+	go func() {
+		for scanner.Scan() {
+			t := scanner.Text()
+			ch <- t
+		}
+	}()
+}
diff --git a/kadai3-1/yoheimiyamoto/pingpong/pingpong_test.go b/kadai3-1/yoheimiyamoto/pingpong/pingpong_test.go
new file mode 100644
index 0000000..dd4e821
--- /dev/null
+++ b/kadai3-1/yoheimiyamoto/pingpong/pingpong_test.go
@@ -0,0 +1 @@
+package pingpong
diff --git a/kadai3-1/yoheimiyamoto/pingpong/score.go b/kadai3-1/yoheimiyamoto/pingpong/score.go
new file mode 100644
index 0000000..9e521de
--- /dev/null
+++ b/kadai3-1/yoheimiyamoto/pingpong/score.go
@@ -0,0 +1,38 @@
+package pingpong
+
+import "fmt"
+
+// 正解、不正解のスコアをカウント
+type score struct {
+	correct   int
+	incorrect int
+}
+
+// 正解をカウントアップ
+func (s *score) addCorrect() {
+	s.correct++
+}
+
+// 不正解をカウントアップ
+func (s *score) addIncorrect() {
+	s.incorrect++
+}
+
+func (s *score) count() int {
+	return s.correct + s.incorrect
+}
+
+// 正解率の算出
+func (s score) rate() float32 {
+	if s.correct == 0 {
+		return 0
+	}
+	sum := float32(s.correct) + float32(s.incorrect)
+	return float32(s.correct) / sum * 100
+}
+
+// 結果を出力
+func (s score) Result() string {
+	sum := s.correct + s.incorrect
+	return fmt.Sprintf(`正解率: %.2f %%（%d/%d）`, s.rate(), s.correct, sum)
+}