diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8c3b883
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
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diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..cb6c684
--- /dev/null
+++ b/package-lock.json
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+      "requires": {
+        "buffer-from": "^1.0.0",
+        "source-map": "^0.6.0"
+      }
+    },
+    "sshpk": {
+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.14.2.tgz",
+      "integrity": "sha1-xvxhZIo9nE52T9P8306hBeSSupg=",
+      "requires": {
+        "asn1": "~0.2.3",
+        "assert-plus": "^1.0.0",
+        "bcrypt-pbkdf": "^1.0.0",
+        "dashdash": "^1.12.0",
+        "ecc-jsbn": "~0.1.1",
+        "getpass": "^0.1.1",
+        "jsbn": "~0.1.0",
+        "safer-buffer": "^2.0.2",
+        "tweetnacl": "~0.14.0"
+      }
+    },
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+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/stealthy-require/-/stealthy-require-1.1.1.tgz",
+      "integrity": "sha1-NbCYdbT/SfJqd35QmzCQoyJr8ks="
+    },
+    "supports-color": {
+      "version": "5.4.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.4.0.tgz",
+      "integrity": "sha512-zjaXglF5nnWpsq470jSv6P9DwPvgLkuapYmfDm3JWOm0vkNTVF2tI4UrN2r6jH1qM/uc/WtxYY1hYoA2dOKj5w==",
+      "requires": {
+        "has-flag": "^3.0.0"
+      }
+    },
+    "tough-cookie": {
+      "version": "2.4.3",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz",
+      "integrity": "sha512-Q5srk/4vDM54WJsJio3XNn6K2sCG+CQ8G5Wz6bZhRZoAe/+TxjWB/GlFAnYEbkYVlON9FMk/fE3h2RLpPXo4lQ==",
+      "requires": {
+        "psl": "^1.1.24",
+        "punycode": "^1.4.1"
+      }
+    },
+    "ts-node": {
+      "version": "6.0.3",
+      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-6.0.3.tgz",
+      "integrity": "sha512-ARaOMNFEPKg2ZuC1qJddFvHxHNFVckR0g9xLxMIoMqSSIkDc8iS4/LoV53EdDWWNq2FGwqcEf0bVVGJIWpsznw==",
+      "requires": {
+        "arrify": "^1.0.0",
+        "chalk": "^2.3.0",
+        "diff": "^3.1.0",
+        "make-error": "^1.1.1",
+        "minimist": "^1.2.0",
+        "mkdirp": "^0.5.1",
+        "source-map-support": "^0.5.3",
+        "yn": "^2.0.0"
+      }
+    },
+    "tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
+      "requires": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "tweetnacl": {
+      "version": "0.14.5",
+      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
+      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
+      "optional": true
+    },
+    "typescript": {
+      "version": "2.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-2.8.3.tgz",
+      "integrity": "sha512-K7g15Bb6Ra4lKf7Iq2l/I5/En+hLIHmxWZGq3D4DIRNFxMNV6j2SHSvDOqs2tGd4UvD/fJvrwopzQXjLrT7Itw=="
+    },
+    "uuid": {
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
+      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA=="
+    },
+    "verror": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+      "requires": {
+        "assert-plus": "^1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "^1.2.0"
+      }
+    },
+    "ws": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-6.0.0.tgz",
+      "integrity": "sha512-c2UlYcAZp1VS8AORtpq6y4RJIkJ9dQz18W32SpR/qXGfLDZ2jU4y4wKvvZwqbi7U6gxFQTeE+urMbXU/tsDy4w==",
+      "requires": {
+        "async-limiter": "~1.0.0"
+      }
+    },
+    "yn": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/yn/-/yn-2.0.0.tgz",
+      "integrity": "sha1-5a2ryKz0CPY4X8dklWhMiOavaJo="
+    }
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..e37db18
--- /dev/null
+++ b/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "ai",
+  "main": "./built/front.js",
+  "scripts": {
+    "build": "tsc"
+  },
+  "dependencies": {
+    "@types/node": "10.0.5",
+    "@types/ws": "5.1.2",
+    "misskey-reversi": "0.0.5",
+    "request": "2.87.0",
+    "request-promise-native": "1.0.5",
+    "ts-node": "6.0.3",
+    "typescript": "2.8.3",
+    "ws": "6.0.0"
+  }
+}
diff --git a/src/back.ts b/src/back.ts
new file mode 100644
index 0000000..9254598
--- /dev/null
+++ b/src/back.ts
@@ -0,0 +1,372 @@
+/**
+ * -AI-
+ * Botのバックエンド(思考を担当)
+ *
+ * 対話と思考を同じプロセスで行うと、思考時間が長引いたときにストリームから
+ * 切断されてしまうので、別々のプロセスで行うようにします
+ */
+
+import * as request from 'request-promise-native';
+import Reversi, { Color } from 'misskey-reversi';
+
+let game;
+let form;
+
+const config = require('../config.json');
+
+let note;
+
+function getUserName(user) {
+	return user.name || user.username;
+}
+
+process.on('message', async msg => {
+	// 親プロセスからデータをもらう
+	if (msg.type == '_init_') {
+		game = msg.game;
+		form = msg.form;
+	}
+
+	// フォームが更新されたとき
+	if (msg.type == 'update-form') {
+		form.find(i => i.id == msg.body.id).value = msg.body.value;
+	}
+
+	// ゲームが始まったとき
+	if (msg.type == 'started') {
+		onGameStarted(msg.body);
+
+		//#region TLに投稿する
+		const game = msg.body;
+		const url = `${config.host}/reversi/${game.id}`;
+		const user = game.user1Id == config.id ? game.user2 : game.user1;
+		const isSettai = form[0].value === 0;
+		const text = isSettai
+			? `?[${getUserName(user)}](${config.host}/@${user.username})さんの接待を始めました！`
+			: `対局を?[${getUserName(user)}](${config.host}/@${user.username})さんと始めました！ (強さ${form[0].value})`;
+
+		const res = await request.post(`${config.host}/api/notes/create`, {
+			json: {
+				i: config.i,
+				text: `${text}\n→[観戦する](${url})`
+			}
+		});
+
+		note = res.createdNote;
+		//#endregion
+	}
+
+	// ゲームが終了したとき
+	if (msg.type == 'ended') {
+		// ストリームから切断
+		process.send({
+			type: 'close'
+		});
+
+		//#region TLに投稿する
+		const user = game.user1Id == config.id ? game.user2 : game.user1;
+		const isSettai = form[0].value === 0;
+		const text = isSettai
+			? msg.body.winnerId === null
+				? `?[${getUserName(user)}](${config.host}/@${user.username})さんに接待で引き分けました...`
+				: msg.body.winnerId == config.id
+					? `?[${getUserName(user)}](${config.host}/@${user.username})さんに接待で勝ってしまいました...`
+					: `?[${getUserName(user)}](${config.host}/@${user.username})さんに接待で負けてあげました♪`
+			: msg.body.winnerId === null
+				? `?[${getUserName(user)}](${config.host}/@${user.username})さんと引き分けました～`
+				: msg.body.winnerId == config.id
+					? `?[${getUserName(user)}](${config.host}/@${user.username})さんに勝ちました♪`
+					: `?[${getUserName(user)}](${config.host}/@${user.username})さんに負けました...`;
+
+		await request.post(`${config.host}/api/notes/create`, {
+			json: {
+				i: config.i,
+				renoteId: note.id,
+				text: text
+			}
+		});
+		//#endregion
+		process.exit();
+	}
+
+	// 打たれたとき
+	if (msg.type == 'set') {
+		onSet(msg.body);
+	}
+});
+
+let o: Reversi;
+let botColor: Color;
+
+// 各マスの強さ
+let cellWeights;
+
+/**
+ * ゲーム開始時
+ * @param g ゲーム情報
+ */
+function onGameStarted(g) {
+	game = g;
+
+	// リバーシエンジン初期化
+	o = new Reversi(game.settings.map, {
+		isLlotheo: game.settings.isLlotheo,
+		canPutEverywhere: game.settings.canPutEverywhere,
+		loopedBoard: game.settings.loopedBoard
+	});
+
+	// 各マスの価値を計算しておく
+	cellWeights = o.map.map((pix, i) => {
+		if (pix == 'null') return 0;
+		const [x, y] = o.transformPosToXy(i);
+		let count = 0;
+		const get = (x, y) => {
+			if (x < 0 || y < 0 || x >= o.mapWidth || y >= o.mapHeight) return 'null';
+			return o.mapDataGet(o.transformXyToPos(x, y));
+		};
+
+		if (get(x    , y - 1) == 'null') count++;
+		if (get(x + 1, y - 1) == 'null') count++;
+		if (get(x + 1, y    ) == 'null') count++;
+		if (get(x + 1, y + 1) == 'null') count++;
+		if (get(x    , y + 1) == 'null') count++;
+		if (get(x - 1, y + 1) == 'null') count++;
+		if (get(x - 1, y    ) == 'null') count++;
+		if (get(x - 1, y - 1) == 'null') count++;
+		//return Math.pow(count, 3);
+		return count >= 4 ? 1 : 0;
+	});
+
+	botColor = game.user1Id == config.id && game.black == 1 || game.user2Id == config.id && game.black == 2;
+
+	if (botColor) {
+		think();
+	}
+}
+
+function onSet(x) {
+	o.put(x.color, x.pos);
+
+	if (x.next === botColor) {
+		think();
+	}
+}
+
+const db = {};
+
+function think() {
+	console.log('Thinking...');
+	console.time('think');
+
+	const isSettai = form[0].value === 0;
+
+	// 接待モードのときは、全力(5手先読みくらい)で負けるようにする
+	const maxDepth = isSettai ? 5 : form[0].value;
+
+	/**
+	 * Botにとってある局面がどれだけ有利か取得する
+	 */
+	function staticEval() {
+		let score = o.canPutSomewhere(botColor).length;
+
+		cellWeights.forEach((weight, i) => {
+			// 係数
+			const coefficient = 30;
+			weight = weight * coefficient;
+
+			const stone = o.board[i];
+			if (stone === botColor) {
+				// TODO: 価値のあるマスに設置されている自分の石に縦か横に接するマスは価値があると判断する
+				score += weight;
+			} else if (stone !== null) {
+				score -= weight;
+			}
+		});
+
+		// ロセオならスコアを反転
+		if (game.settings.isLlotheo) score = -score;
+
+		// 接待ならスコアを反転
+		if (isSettai) score = -score;
+
+		return score;
+	}
+
+	/**
+	 * αβ法での探索
+	 */
+	const dive = (pos: number, alpha = -Infinity, beta = Infinity, depth = 0): number => {
+		// 試し打ち
+		o.put(o.turn, pos);
+
+		const key = o.board.toString();
+		let cache = db[key];
+		if (cache) {
+			if (alpha >= cache.upper) {
+				o.undo();
+				return cache.upper;
+			}
+			if (beta <= cache.lower) {
+				o.undo();
+				return cache.lower;
+			}
+			alpha = Math.max(alpha, cache.lower);
+			beta = Math.min(beta, cache.upper);
+		} else {
+			cache = {
+				upper: Infinity,
+				lower: -Infinity
+			};
+		}
+
+		const isBotTurn = o.turn === botColor;
+
+		// 勝った
+		if (o.turn === null) {
+			const winner = o.winner;
+
+			// 勝つことによる基本スコア
+			const base = 10000;
+
+			let score;
+
+			if (game.settings.isLlotheo) {
+				// 勝ちは勝ちでも、より自分の石を少なくした方が美しい勝ちだと判定する
+				score = o.winner ? base - (o.blackCount * 100) : base - (o.whiteCount * 100);
+			} else {
+				// 勝ちは勝ちでも、より相手の石を少なくした方が美しい勝ちだと判定する
+				score = o.winner ? base + (o.blackCount * 100) : base + (o.whiteCount * 100);
+			}
+
+			// 巻き戻し
+			o.undo();
+
+			// 接待なら自分が負けた方が高スコア
+			return isSettai
+				? winner !== botColor ? score : -score
+				: winner === botColor ? score : -score;
+		}
+
+		if (depth === maxDepth) {
+			// 静的に評価
+			const score = staticEval();
+
+			// 巻き戻し
+			o.undo();
+
+			return score;
+		} else {
+			const cans = o.canPutSomewhere(o.turn);
+
+			let value = isBotTurn ? -Infinity : Infinity;
+			let a = alpha;
+			let b = beta;
+
+			// 次のターンのプレイヤーにとって最も良い手を取得
+			for (const p of cans) {
+				if (isBotTurn) {
+					const score = dive(p, a, beta, depth + 1);
+					value = Math.max(value, score);
+					a = Math.max(a, value);
+					if (value >= beta) break;
+				} else {
+					const score = dive(p, alpha, b, depth + 1);
+					value = Math.min(value, score);
+					b = Math.min(b, value);
+					if (value <= alpha) break;
+				}
+			}
+
+			// 巻き戻し
+			o.undo();
+
+			if (value <= alpha) {
+				cache.upper = value;
+			} else if (value >= beta) {
+				cache.lower = value;
+			} else {
+				cache.upper = value;
+				cache.lower = value;
+			}
+
+			db[key] = cache;
+
+			return value;
+		}
+	};
+
+	/**
+	 * αβ法での探索(キャッシュ無し)(デバッグ用)
+	 */
+	const dive2 = (pos: number, alpha = -Infinity, beta = Infinity, depth = 0): number => {
+		// 試し打ち
+		o.put(o.turn, pos);
+
+		const isBotTurn = o.turn === botColor;
+
+		// 勝った
+		if (o.turn === null) {
+			const winner = o.winner;
+
+			// 勝つことによる基本スコア
+			const base = 10000;
+
+			let score;
+
+			if (game.settings.isLlotheo) {
+				// 勝ちは勝ちでも、より自分の石を少なくした方が美しい勝ちだと判定する
+				score = o.winner ? base - (o.blackCount * 100) : base - (o.whiteCount * 100);
+			} else {
+				// 勝ちは勝ちでも、より相手の石を少なくした方が美しい勝ちだと判定する
+				score = o.winner ? base + (o.blackCount * 100) : base + (o.whiteCount * 100);
+			}
+
+			// 巻き戻し
+			o.undo();
+
+			// 接待なら自分が負けた方が高スコア
+			return isSettai
+				? winner !== botColor ? score : -score
+				: winner === botColor ? score : -score;
+		}
+
+		if (depth === maxDepth) {
+			// 静的に評価
+			const score = staticEval();
+
+			// 巻き戻し
+			o.undo();
+
+			return score;
+		} else {
+			const cans = o.canPutSomewhere(o.turn);
+
+			// 次のターンのプレイヤーにとって最も良い手を取得
+			for (const p of cans) {
+				if (isBotTurn) {
+					alpha = Math.max(alpha, dive2(p, alpha, beta, depth + 1));
+				} else {
+					beta = Math.min(beta, dive2(p, alpha, beta, depth + 1));
+				}
+				if (alpha >= beta) break;
+			}
+
+			// 巻き戻し
+			o.undo();
+
+			return isBotTurn ? alpha : beta;
+		}
+	};
+
+	const cans = o.canPutSomewhere(botColor);
+	const scores = cans.map(p => dive(p));
+	const pos = cans[scores.indexOf(Math.max(...scores))];
+
+	console.log('Thinked:', pos);
+	console.timeEnd('think');
+
+	process.send({
+		type: 'put',
+		pos
+	});
+}
diff --git a/src/front.ts b/src/front.ts
new file mode 100644
index 0000000..71b30f6
--- /dev/null
+++ b/src/front.ts
@@ -0,0 +1,220 @@
+/**
+ * -AI-
+ * Botのフロントエンド(ストリームとの対話を担当)
+ *
+ * 対話と思考を同じプロセスで行うと、思考時間が長引いたときにストリームから
+ * 切断されてしまうので、別々のプロセスで行うようにします
+ */
+
+import * as childProcess from 'child_process';
+import * as WebSocket from 'ws';
+import * as request from 'request-promise-native';
+
+const config = require('../config.json');
+
+const wsUrl = config.host.replace('http', 'ws');
+const apiUrl = config.host + '/api';
+
+/**
+ * ホームストリーム
+ */
+const homeStream = new WebSocket(`${wsUrl}/?i=${config.i}`);
+
+homeStream.addEventListener('open', () => {
+	console.log('home stream opened');
+});
+
+homeStream.addEventListener('close', () => {
+	console.log('home stream closed');
+});
+
+homeStream.addEventListener('message', message => {
+	const msg = JSON.parse(message.data);
+
+	// タイムライン上でなんか言われたまたは返信されたとき
+	if (msg.type == 'mention' || msg.type == 'reply') {
+		const note = msg.body;
+
+		if (note.userId == config.id) return;
+
+		// リアクションする
+		request.post(`${apiUrl}/notes/reactions/create`, {
+			json: {
+				i: config.i,
+				noteId: note.id,
+				reaction: 'love'
+			}
+		});
+
+		if (note.text) {
+			if (note.text.indexOf('リバーシ') > -1) {
+				request.post(`${apiUrl}/notes/create`, {
+					json: {
+						i: config.i,
+						replyId: note.id,
+						text: '良いですよ～'
+					}
+				});
+
+				invite(note.userId);
+			}
+		}
+	}
+
+	// メッセージでなんか言われたとき
+	if (msg.type == 'messaging_message') {
+		const message = msg.body;
+		if (message.text) {
+			if (message.text.indexOf('リバーシ') > -1) {
+				request.post(`${apiUrl}/messaging/messages/create`, {
+					json: {
+						i: config.i,
+						userId: message.userId,
+						text: '良いですよ～'
+					}
+				});
+
+				invite(message.userId);
+			}
+		}
+	}
+});
+
+// ユーザーを対局に誘う
+function invite(userId) {
+	request.post(`${apiUrl}/games/reversi/match`, {
+		json: {
+			i: config.i,
+			userId: userId
+		}
+	});
+}
+
+/**
+ * リバーシストリーム
+ */
+const reversiStream = new WebSocket(`${wsUrl}/games/reversi?i=${config.i}`);
+
+reversiStream.addEventListener('open', () => {
+	console.log('reversi stream opened');
+});
+
+reversiStream.addEventListener('close', () => {
+	console.log('reversi stream closed');
+});
+
+reversiStream.addEventListener('message', message => {
+	const msg = JSON.parse(message.data);
+
+	// 招待されたとき
+	if (msg.type == 'invited') {
+		onInviteMe(msg.body.parent);
+	}
+
+	// マッチしたとき
+	if (msg.type == 'matched') {
+		gameStart(msg.body);
+	}
+});
+
+/**
+ * ゲーム開始
+ * @param game ゲーム情報
+ */
+function gameStart(game) {
+	// ゲームストリームに接続
+	const gw = new WebSocket(`${wsUrl}/games/reversi-game?i=${config.i}&game=${game.id}`);
+
+	gw.addEventListener('open', () => {
+		console.log('reversi game stream opened');
+
+		// フォーム
+		const form = [{
+			id: 'strength',
+			type: 'radio',
+			label: '強さ',
+			value: 2,
+			items: [{
+				label: '接待',
+				value: 0
+			}, {
+				label: '弱',
+				value: 1
+			}, {
+				label: '中',
+				value: 2
+			}, {
+				label: '強',
+				value: 3
+			}, {
+				label: '最強',
+				value: 5
+			}]
+		}];
+
+		//#region バックエンドプロセス開始
+		const ai = childProcess.fork(__dirname + '/back.js');
+
+		// バックエンドプロセスに情報を渡す
+		ai.send({
+			type: '_init_',
+			game,
+			form
+		});
+
+		ai.on('message', msg => {
+			if (msg.type == 'put') {
+				gw.send(JSON.stringify({
+					type: 'set',
+					pos: msg.pos
+				}));
+			} else if (msg.type == 'close') {
+				gw.close();
+			}
+		});
+
+		// ゲームストリームから情報が流れてきたらそのままバックエンドプロセスに伝える
+		gw.addEventListener('message', message => {
+			const msg = JSON.parse(message.data);
+			ai.send(msg);
+		});
+		//#endregion
+
+		// フォーム初期化
+		setTimeout(() => {
+			gw.send(JSON.stringify({
+				type: 'init-form',
+				body: form
+			}));
+		}, 1000);
+
+		// どんな設定内容の対局でも受け入れる
+		setTimeout(() => {
+			gw.send(JSON.stringify({
+				type: 'accept'
+			}));
+		}, 2000);
+	});
+
+	gw.addEventListener('close', () => {
+		console.log('reversi game stream closed');
+	});
+}
+
+/**
+ * リバーシの対局に招待されたとき
+ * @param inviter 誘ってきたユーザー
+ */
+async function onInviteMe(inviter) {
+	console.log(`Someone invited me: @${inviter.username}`);
+
+	// 承認
+	const game = await request.post(`${apiUrl}/games/reversi/match`, {
+		json: {
+			i: config.i,
+			userId: inviter.id
+		}
+	});
+
+	gameStart(game);
+}
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..30e53c4
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,20 @@
+{
+	"compilerOptions": {
+		"noEmitOnError": true,
+		"noImplicitAny": false,
+		"noImplicitReturns": true,
+		"noFallthroughCasesInSwitch": true,
+		"experimentalDecorators": true,
+		"sourceMap": false,
+		"target": "es2017",
+		"module": "commonjs",
+		"removeComments": false,
+		"noLib": false,
+		"outDir": "built",
+		"rootDir": "src"
+	},
+	"compileOnSave": false,
+	"include": [
+		"./src/**/*.ts"
+	]
+}