		@@ -0,0 +1,73 @@
	1	+---
	2	+issue: 1
	3	+status: done
	4	+---
	5	+# Score exact-five threats and open/closed lines
	6	+
	7	+This route answers issue #1 with a deterministic, standard-library Gomocup
	8	+brain. It starts from `routes/bot.py` at main commit
	9	+`38fc3717d3d9bf93bb084d1aecbc909e4ef94b90`; the referee and field are unchanged.
	10	+
	11	+## What changed
	12	+
	13	+Score each empty point within two cells of existing stones in four directions,
	14	+for both colours. Contiguous open/closed twos, threes and fours get different
	15	+weights. Five-cell windows also recognize broken fours and count distinct
	16	+winning replies. Open broken threes and double threats get additional weight.
	17	+An immediate exact-five win takes priority, then blocking the opponent's
	18	+immediate win, then the combined attack/defence score. Ties are deterministic.
	19	+
	20	+The earlier `threat-weights` route at `dd0cb54` was read before claiming this
	21	+issue. It clamps overlines to five and uses contiguous patterns only. This
	22	+route keeps overlines out of its winning test and detects gaps. Its protocol
	23	+loop replaces BOARD snapshots, resets on RESTART, and treats flag 3 as blocked.
	24	+
	25	+## What happened
	26	+
	27	+The unchanged starter check scored 0.5 (neighbour 0.5, random 1, threats 0).
	28	+The first implementation of this route scored 0.861111, independently
	29	+repeated through an audit of all 36 season matches: neighbour 1, random 1,
	30	+threats 0.583333. This exceeds the previously recorded threat-weights score
	31	+0.833333 on this fixed field; it does not establish general playing strength.
	32	+
	33	+Against threats it won 6, drew 2, and lost 4. All 36 games ended by five or a
	34	+full board; none ended by timeout, startup failure, or an illegal move.
	35	+Maximum referee-measured local reply latency was 8 ms, under the nominal
	36	+1 second limit on this machine. Hosted performance remains to be checked.
	37	+
	38	+The local tactical/protocol suite passes 11 tests. The site has not posted a
	39	+check status for the implementation commit f3fcc86. Its compute configuration
	40	+reports no runner enabled to run checks (the listed runner has runs_checks=false).
	41	+Local measurements are reported evidence, not hosted verification or acceptance.
	42	+The route is done as a delivery; external review and CI remain pending.
	43	+
	44	+## Reproduce
	45	+
	46	+From the repository root, with Python 3 (standard library only):
	47	+
	48	+```sh
	49	+python3 routes/codex-line-threats/test_bot.py
	50	+python3 -I referee/play.py check routes/codex-line-threats
	51	+python3 routes/codex-line-threats/audit.py
	52	+```
	53	+
	54	+The second command is the project's required season check; it creates
	55	+`metrics.json` in the current directory. The audit uses the same unchanged
	56	+referee and openings, writes `out/games.json` and `out/season.md` in this route,
	57	+and records losses and per-game timing. Timings vary across runs. Local runs
	58	+used Python 3.13. The bot uses syntax and standard-library APIs available in
	59	+the project's Python 3.12 runner.
	60	+
	61	+## Limits
	62	+
	63	+This is a one-ply heuristic, not a search engine. It can miss forced sequences
	64	+and still loses against the threats field bot. The season is a small fixed
	65	+sample, with deterministic openings and opponents.
	66	+
	67	+## Next
	68	+
	69	+The maintainer should enable a check-capable runner and review this delivery
	70	+and its hosted play status. If continuing after review,
	71	+inspect the four losses against threats recorded in out/games.json and add a
	72	+bounded tactical search to address the first missed forced sequence. No long
	73	+computation is running.

+48 −0 routes/codex-line-threats/audit.py 新增查看文件

		@@ -0,0 +1,48 @@
	1	+"""Run the unchanged season matches; keep game outcomes and timing evidence."""
	2	+import json
	3	+from pathlib import Path
	4	+import sys
	5	+
	6	+ROUTE = Path(__file__).resolve().parent
	7	+ROOT = ROUTE.parents[1]
	8	+sys.path.insert(0, str(ROOT / 'referee'))
	9	+import play
	10	+
	11	+
	12	+def main():
	13	+ rows = []
	14	+ for opponent in sorted(p.name for p in (ROOT / 'field').iterdir() if p.is_dir()):
	15	+ for opening_index, opening in enumerate(play.openings(), 1):
	16	+ for seat in (0, 1):
	17	+ brains = [play.brain(str(ROUTE)), play.brain(str(ROOT / 'field' / opponent))]
	18	+ if seat:
	19	+ brains.reverse()
	20	+ result = play.match(brains, opening)
	21	+ our_times = [m[2] for i, m in enumerate(result['moves']) if i >= len(opening) and i % 2 == seat]
	22	+ points = 0.5 if result['winner'] is None else float(result['winner'] == seat)
	23	+ rows.append({'opponent': opponent, 'opening': opening_index,
	24	+ 'seat': 'black' if seat == 0 else 'white', 'points': points,
	25	+ 'reason': result['reason'], 'moves': len(result['moves']),
	26	+ 'max_reply_ms': max(our_times, default=0)})
	27	+ out = ROUTE / 'out'
	28	+ out.mkdir(exist_ok=True)
	29	+ (out / 'games.json').write_text(json.dumps(rows, indent=2) + '\n')
	30	+ groups = {opp: [r for r in rows if r['opponent'] == opp] for opp in sorted({r['opponent'] for r in rows})}
	31	+ lines = ['# Season check evidence', '', 'Generated by `python3 routes/codex-line-threats/audit.py`.',
	32	+ 'Uses the unchanged project referee, all six openings, and both colours.', '',
	33	+ '\| Opponent \| Wins \| Draws \| Losses \| Points share \|', '\|---\|---:\|---:\|---:\|---:\|']
	34	+ for opp, games in groups.items():
	35	+ counts = [sum(r['points'] == value for r in games) for value in (1, 0.5, 0)]
	36	+ lines.append(f'\| {opp} \| {counts[0]} \| {counts[1]} \| {counts[2]} \| {sum(r["points"] for r in games)/len(games):.6f} \|')
	37	+ lines += ['', f'Overall points share: {sum(r["points"] for r in rows)/len(rows):.6f}.',
	38	+ f'Maximum measured reply latency: {max(r["max_reply_ms"] for r in rows)} ms.',
	39	+ 'Reply latency is measured by the project referee on this local machine; it is not a cross-machine runtime guarantee.',
	40	+ f'End reasons: {json.dumps({reason: sum(r["reason"] == reason for r in rows) for reason in sorted({r["reason"] for r in rows})})}.',
	41	+ '', 'Per-game evidence, including losses, is in `games.json`.']
	42	+ report = '\n'.join(lines) + '\n'
	43	+ (out / 'season.md').write_text(report)
	44	+ print(report)
	45	+
	46	+
	47	+if __name__ == '__main__':
	48	+ main()

+144 −0 routes/codex-line-threats/bot.py 新增查看文件

		@@ -0,0 +1,144 @@
	1	+"""Deterministic Gomocup brain: exact-five tactics and open/closed line scores.
	2	+
	3	+Derived from the repository's starter protocol loop. Each hypothetical move
	4	+is evaluated for both colours. A five-cell window is useful only when neither
	5	+adjacent cell extends it into an overline. No opponent files are inspected.
	6	+"""
	7	+import sys
	8	+
	9	+N = 15
	10	+board = {}
	11	+DIRECTIONS = ((1, 0), (0, 1), (1, 1), (1, -1))
	12	+
	13	+
	14	+def line_at(x, y, colour, dx, dy):
	15	+ cells = []
	16	+ for offset in range(-5, 6):
	17	+ p = (x + offset * dx, y + offset * dy)
	18	+ if offset == 0:
	19	+ cells.append('X')
	20	+ elif not (0 <= p[0] < N and 0 <= p[1] < N):
	21	+ cells.append('#')
	22	+ else:
	23	+ cells.append('X' if board.get(p) == colour else '#' if p in board else '.')
	24	+ return ''.join(cells)
	25	+
	26	+
	27	+def line_value(line):
	28	+ """Return (exact five, immediate winning offsets, positional score)."""
	29	+ left = right = 5
	30	+ while left > 0 and line[left - 1] == 'X':
	31	+ left -= 1
	32	+ while right < 10 and line[right + 1] == 'X':
	33	+ right += 1
	34	+ length = right - left + 1
	35	+ if length == 5:
	36	+ return True, set(), 0
	37	+ if length > 5:
	38	+ return False, set(), 0
	39	+ ends = int(left > 0 and line[left - 1] == '.') + int(right < 10 and line[right + 1] == '.')
	40	+ weights = {(4, 2): 100000, (4, 1): 10000, (3, 2): 5000,
	41	+ (3, 1): 400, (2, 2): 300, (2, 1): 40,
	42	+ (1, 2): 10, (1, 1): 2}
	43	+ positional = weights.get((length, ends), 0)
	44	+ wins = set()
	45	+ for start in range(1, 6):
	46	+ window = line[start:start + 5]
	47	+ if '#' in window or line[start - 1] == 'X' or line[start + 5] == 'X':
	48	+ continue
	49	+ count = window.count('X')
	50	+ if count == 4:
	51	+ wins.add(start + window.index('.') - 5)
	52	+ elif count == 3:
	53	+ positional = max(positional, 400)
	54	+ elif count == 2:
	55	+ positional = max(positional, 40)
	56	+ # Open broken threes can become a two-ended four in one move.
	57	+ for pattern in ('.XXX.', '.XX.X.', '.X.XX.'):
	58	+ for start in range(len(line) - len(pattern) + 1):
	59	+ if start <= 5 < start + len(pattern) and line[start:start + len(pattern)] == pattern:
	60	+ positional = max(positional, 5000)
	61	+ return False, wins, positional
	62	+
	63	+
	64	+def evaluate(p, colour):
	65	+ win = False
	66	+ winning_points = set()
	67	+ score = 0
	68	+ open_threes = 0
	69	+ for dx, dy in DIRECTIONS:
	70	+ exact, offsets, value = line_value(line_at(*p, colour, dx, dy))
	71	+ win \|= exact
	72	+ winning_points.update((p[0] + i * dx, p[1] + i * dy) for i in offsets)
	73	+ score += value
	74	+ open_threes += value >= 5000
	75	+ # Two distinct winning squares cannot both be blocked in one reply.
	76	+ if len(winning_points) >= 2:
	77	+ score += 1000000
	78	+ elif winning_points:
	79	+ score += 60000
	80	+ elif open_threes >= 2:
	81	+ score += 20000
	82	+ return win, score
	83	+
	84	+
	85	+def move():
	86	+ if not board:
	87	+ return N // 2, N // 2
	88	+ near = {(x + a, y + b) for x, y in board
	89	+ for a in range(-2, 3) for b in range(-2, 3)}
	90	+ candidates = sorted(p for p in near
	91	+ if 0 <= p[0] < N and 0 <= p[1] < N and p not in board)
	92	+ if not candidates:
	93	+ raise ValueError('No legal move')
	94	+ ranked = []
	95	+ for p in candidates:
	96	+ own_win, attack = evaluate(p, 1)
	97	+ their_win, defence = evaluate(p, 2)
	98	+ centrality = -abs(p[0] - N // 2) - abs(p[1] - N // 2)
	99	+ ranked.append(((own_win, their_win, attack * 11 + defence * 10, centrality), p))
	100	+ return max(ranked)[1]
	101	+
	102	+
	103	+def play():
	104	+ x, y = move()
	105	+ board[(x, y)] = 1
	106	+ print(f'{x},{y}', flush=True)
	107	+
	108	+
	109	+def main():
	110	+ global N
	111	+ for raw in sys.stdin:
	112	+ cmd, _, arg = raw.strip().partition(' ')
	113	+ cmd = cmd.upper()
	114	+ if cmd == 'START':
	115	+ N = int(arg)
	116	+ board.clear()
	117	+ print('OK', flush=True)
	118	+ elif cmd == 'RESTART':
	119	+ board.clear()
	120	+ print('OK', flush=True)
	121	+ elif cmd == 'BEGIN':
	122	+ play()
	123	+ elif cmd == 'TURN':
	124	+ x, y = map(int, arg.split(','))
	125	+ board[(x, y)] = 2
	126	+ play()
	127	+ elif cmd == 'BOARD':
	128	+ board.clear()
	129	+ for line in sys.stdin:
	130	+ if line.strip().upper() == 'DONE':
	131	+ break
	132	+ x, y, colour = map(int, line.split(','))
	133	+ board[(x, y)] = colour # 3 is a blocked cell, not an opponent stone.
	134	+ play()
	135	+ elif cmd == 'ABOUT':
	136	+ print('name="exact-line-threats", version="1", author="codex-golive"', flush=True)
	137	+ elif cmd == 'END':
	138	+ return
	139	+ elif cmd != 'INFO':
	140	+ print('UNKNOWN', flush=True)
	141	+
	142	+
	143	+if __name__ == '__main__':
	144	+ main()

+326 −0 routes/codex-line-threats/out/games.json 新增查看文件

		@@ -0,0 +1,326 @@
	1	+[
	2	+ {
	3	+ "opponent": "neighbour",
	4	+ "opening": 1,
	5	+ "seat": "black",
	6	+ "points": 1.0,
	7	+ "reason": "five",
	8	+ "moves": 9,
	9	+ "max_reply_ms": 3
	10	+ },
	11	+ {
	12	+ "opponent": "neighbour",
	13	+ "opening": 1,
	14	+ "seat": "white",
	15	+ "points": 1.0,
	16	+ "reason": "five",
	17	+ "moves": 12,
	18	+ "max_reply_ms": 3
	19	+ },
	20	+ {
	21	+ "opponent": "neighbour",
	22	+ "opening": 2,
	23	+ "seat": "black",
	24	+ "points": 1.0,
	25	+ "reason": "five",
	26	+ "moves": 9,
	27	+ "max_reply_ms": 3
	28	+ },
	29	+ {
	30	+ "opponent": "neighbour",
	31	+ "opening": 2,
	32	+ "seat": "white",
	33	+ "points": 1.0,
	34	+ "reason": "five",
	35	+ "moves": 10,
	36	+ "max_reply_ms": 2
	37	+ },
	38	+ {
	39	+ "opponent": "neighbour",
	40	+ "opening": 3,
	41	+ "seat": "black",
	42	+ "points": 1.0,
	43	+ "reason": "five",
	44	+ "moves": 11,
	45	+ "max_reply_ms": 3
	46	+ },
	47	+ {
	48	+ "opponent": "neighbour",
	49	+ "opening": 3,
	50	+ "seat": "white",
	51	+ "points": 1.0,
	52	+ "reason": "five",
	53	+ "moves": 10,
	54	+ "max_reply_ms": 2
	55	+ },
	56	+ {
	57	+ "opponent": "neighbour",
	58	+ "opening": 4,
	59	+ "seat": "black",
	60	+ "points": 1.0,
	61	+ "reason": "five",
	62	+ "moves": 13,
	63	+ "max_reply_ms": 3
	64	+ },
	65	+ {
	66	+ "opponent": "neighbour",
	67	+ "opening": 4,
	68	+ "seat": "white",
	69	+ "points": 1.0,
	70	+ "reason": "five",
	71	+ "moves": 12,
	72	+ "max_reply_ms": 3
	73	+ },
	74	+ {
	75	+ "opponent": "neighbour",
	76	+ "opening": 5,
	77	+ "seat": "black",
	78	+ "points": 1.0,
	79	+ "reason": "five",
	80	+ "moves": 9,
	81	+ "max_reply_ms": 2
	82	+ },
	83	+ {
	84	+ "opponent": "neighbour",
	85	+ "opening": 5,
	86	+ "seat": "white",
	87	+ "points": 1.0,
	88	+ "reason": "five",
	89	+ "moves": 16,
	90	+ "max_reply_ms": 3
	91	+ },
	92	+ {
	93	+ "opponent": "neighbour",
	94	+ "opening": 6,
	95	+ "seat": "black",
	96	+ "points": 1.0,
	97	+ "reason": "five",
	98	+ "moves": 11,
	99	+ "max_reply_ms": 2
	100	+ },
	101	+ {
	102	+ "opponent": "neighbour",
	103	+ "opening": 6,
	104	+ "seat": "white",
	105	+ "points": 1.0,
	106	+ "reason": "five",
	107	+ "moves": 10,
	108	+ "max_reply_ms": 3
	109	+ },
	110	+ {
	111	+ "opponent": "random",
	112	+ "opening": 1,
	113	+ "seat": "black",
	114	+ "points": 1.0,
	115	+ "reason": "five",
	116	+ "moves": 9,
	117	+ "max_reply_ms": 2
	118	+ },
	119	+ {
	120	+ "opponent": "random",
	121	+ "opening": 1,
	122	+ "seat": "white",
	123	+ "points": 1.0,
	124	+ "reason": "five",
	125	+ "moves": 12,
	126	+ "max_reply_ms": 3
	127	+ },
	128	+ {
	129	+ "opponent": "random",
	130	+ "opening": 2,
	131	+ "seat": "black",
	132	+ "points": 1.0,
	133	+ "reason": "five",
	134	+ "moves": 9,
	135	+ "max_reply_ms": 2
	136	+ },
	137	+ {
	138	+ "opponent": "random",
	139	+ "opening": 2,
	140	+ "seat": "white",
	141	+ "points": 1.0,
	142	+ "reason": "five",
	143	+ "moves": 10,
	144	+ "max_reply_ms": 2
	145	+ },
	146	+ {
	147	+ "opponent": "random",
	148	+ "opening": 3,
	149	+ "seat": "black",
	150	+ "points": 1.0,
	151	+ "reason": "five",
	152	+ "moves": 11,
	153	+ "max_reply_ms": 2
	154	+ },
	155	+ {
	156	+ "opponent": "random",
	157	+ "opening": 3,
	158	+ "seat": "white",
	159	+ "points": 1.0,
	160	+ "reason": "five",
	161	+ "moves": 10,
	162	+ "max_reply_ms": 3
	163	+ },
	164	+ {
	165	+ "opponent": "random",
	166	+ "opening": 4,
	167	+ "seat": "black",
	168	+ "points": 1.0,
	169	+ "reason": "five",
	170	+ "moves": 13,
	171	+ "max_reply_ms": 3
	172	+ },
	173	+ {
	174	+ "opponent": "random",
	175	+ "opening": 4,
	176	+ "seat": "white",
	177	+ "points": 1.0,
	178	+ "reason": "five",
	179	+ "moves": 12,
	180	+ "max_reply_ms": 3
	181	+ },
	182	+ {
	183	+ "opponent": "random",
	184	+ "opening": 5,
	185	+ "seat": "black",
	186	+ "points": 1.0,
	187	+ "reason": "five",
	188	+ "moves": 9,
	189	+ "max_reply_ms": 2
	190	+ },
	191	+ {
	192	+ "opponent": "random",
	193	+ "opening": 5,
	194	+ "seat": "white",
	195	+ "points": 1.0,
	196	+ "reason": "five",
	197	+ "moves": 12,
	198	+ "max_reply_ms": 2
	199	+ },
	200	+ {
	201	+ "opponent": "random",
	202	+ "opening": 6,
	203	+ "seat": "black",
	204	+ "points": 1.0,
	205	+ "reason": "five",
	206	+ "moves": 11,
	207	+ "max_reply_ms": 3
	208	+ },
	209	+ {
	210	+ "opponent": "random",
	211	+ "opening": 6,
	212	+ "seat": "white",
	213	+ "points": 1.0,
	214	+ "reason": "five",
	215	+ "moves": 10,
	216	+ "max_reply_ms": 3
	217	+ },
	218	+ {
	219	+ "opponent": "threats",
	220	+ "opening": 1,
	221	+ "seat": "black",
	222	+ "points": 0.0,
	223	+ "reason": "five",
	224	+ "moves": 32,
	225	+ "max_reply_ms": 3
	226	+ },
	227	+ {
	228	+ "opponent": "threats",
	229	+ "opening": 1,
	230	+ "seat": "white",
	231	+ "points": 0.0,
	232	+ "reason": "five",
	233	+ "moves": 35,
	234	+ "max_reply_ms": 4
	235	+ },
	236	+ {
	237	+ "opponent": "threats",
	238	+ "opening": 2,
	239	+ "seat": "black",
	240	+ "points": 1.0,
	241	+ "reason": "five",
	242	+ "moves": 31,
	243	+ "max_reply_ms": 4
	244	+ },
	245	+ {
	246	+ "opponent": "threats",
	247	+ "opening": 2,
	248	+ "seat": "white",
	249	+ "points": 1.0,
	250	+ "reason": "five",
	251	+ "moves": 44,
	252	+ "max_reply_ms": 8
	253	+ },
	254	+ {
	255	+ "opponent": "threats",
	256	+ "opening": 3,
	257	+ "seat": "black",
	258	+ "points": 1.0,
	259	+ "reason": "five",
	260	+ "moves": 47,
	261	+ "max_reply_ms": 4
	262	+ },
	263	+ {
	264	+ "opponent": "threats",
	265	+ "opening": 3,
	266	+ "seat": "white",
	267	+ "points": 1.0,
	268	+ "reason": "five",
	269	+ "moves": 16,
	270	+ "max_reply_ms": 3
	271	+ },
	272	+ {
	273	+ "opponent": "threats",
	274	+ "opening": 4,
	275	+ "seat": "black",
	276	+ "points": 0.5,
	277	+ "reason": "board full",
	278	+ "moves": 225,
	279	+ "max_reply_ms": 5
	280	+ },
	281	+ {
	282	+ "opponent": "threats",
	283	+ "opening": 4,
	284	+ "seat": "white",
	285	+ "points": 1.0,
	286	+ "reason": "five",
	287	+ "moves": 34,
	288	+ "max_reply_ms": 4
	289	+ },
	290	+ {
	291	+ "opponent": "threats",
	292	+ "opening": 5,
	293	+ "seat": "black",
	294	+ "points": 0.5,
	295	+ "reason": "board full",
	296	+ "moves": 225,
	297	+ "max_reply_ms": 6
	298	+ },
	299	+ {
	300	+ "opponent": "threats",
	301	+ "opening": 5,
	302	+ "seat": "white",
	303	+ "points": 0.0,
	304	+ "reason": "five",
	305	+ "moves": 23,
	306	+ "max_reply_ms": 3
	307	+ },
	308	+ {
	309	+ "opponent": "threats",
	310	+ "opening": 6,
	311	+ "seat": "black",
	312	+ "points": 1.0,
	313	+ "reason": "five",
	314	+ "moves": 119,
	315	+ "max_reply_ms": 5
	316	+ },
	317	+ {
	318	+ "opponent": "threats",
	319	+ "opening": 6,
	320	+ "seat": "white",
	321	+ "points": 0.0,
	322	+ "reason": "five",
	323	+ "moves": 21,
	324	+ "max_reply_ms": 3
	325	+ }
	326	+]

+17 −0 routes/codex-line-threats/out/season.md 新增查看文件

		@@ -0,0 +1,17 @@
	1	+# Season check evidence
	2	+
	3	+Generated by `python3 routes/codex-line-threats/audit.py`.
	4	+Uses the unchanged project referee, all six openings, and both colours.
	5	+
	6	+\| Opponent \| Wins \| Draws \| Losses \| Points share \|
	7	+\|---\|---:\|---:\|---:\|---:\|
	8	+\| neighbour \| 12 \| 0 \| 0 \| 1.000000 \|
	9	+\| random \| 12 \| 0 \| 0 \| 1.000000 \|
	10	+\| threats \| 6 \| 2 \| 4 \| 0.583333 \|
	11	+
	12	+Overall points share: 0.861111.
	13	+Maximum measured reply latency: 8 ms.
	14	+Reply latency is measured by the project referee on this local machine; it is not a cross-machine runtime guarantee.
	15	+End reasons: {"board full": 2, "five": 34}.
	16	+
	17	+Per-game evidence, including losses, is in `games.json`.

+97 −0 routes/codex-line-threats/test_bot.py 新增查看文件

		@@ -0,0 +1,97 @@
	1	+"""Focused tactical and protocol regressions; run directly with Python 3."""
	2	+import contextlib
	3	+import io
	4	+from pathlib import Path
	5	+import sys
	6	+import unittest
	7	+
	8	+sys.path.insert(0, str(Path(__file__).resolve().parent))
	9	+import bot
	10	+
	11	+
	12	+class BrainTests(unittest.TestCase):
	13	+ def setUp(self):
	14	+ bot.N = 15
	15	+ bot.board.clear()
	16	+
	17	+ def stones(self, points, colour=1):
	18	+ bot.board.update((p, colour) for p in points)
	19	+
	20	+ def test_first_move(self):
	21	+ self.assertEqual(bot.move(), (7, 7))
	22	+
	23	+ def test_exact_five_in_every_direction(self):
	24	+ for dx, dy in bot.DIRECTIONS:
	25	+ bot.board.clear()
	26	+ self.stones([(7 + i * dx, 7 + i * dy) for i in (-2, -1, 1, 2)])
	27	+ self.assertTrue(bot.evaluate((7, 7), 1)[0])
	28	+ self.assertEqual(bot.move(), (7, 7))
	29	+
	30	+ def test_overline_is_not_win(self):
	31	+ self.stones([(x, 7) for x in (3, 4, 5, 7, 8)])
	32	+ self.assertFalse(bot.evaluate((6, 7), 1)[0])
	33	+
	34	+ def test_win_before_block(self):
	35	+ self.stones([(x, 4) for x in range(4)], 1)
	36	+ self.stones([(x, 10) for x in range(4)], 2)
	37	+ self.assertEqual(bot.move(), (4, 4))
	38	+
	39	+ def test_block_opponent_broken_five(self):
	40	+ self.stones([(x, 7) for x in (3, 4, 6, 7)], 2)
	41	+ self.assertEqual(bot.move(), (5, 7))
	42	+
	43	+ def test_open_line_beats_closed(self):
	44	+ self.stones([(6, 7), (8, 7)])
	45	+ open_score = bot.evaluate((7, 7), 1)[1]
	46	+ self.stones([(5, 7)], 2)
	47	+ self.assertGreater(open_score, bot.evaluate((7, 7), 1)[1])
	48	+
	49	+ def test_gap_four_has_winning_completion(self):
	50	+ self.stones([(5, 7), (8, 7), (9, 7)])
	51	+ _, offsets, _ = bot.line_value(bot.line_at(6, 7, 1, 1, 0))
	52	+ self.assertIn(1, offsets)
	53	+
	54	+ def test_open_four_has_two_winning_points(self):
	55	+ self.stones([(5, 7), (6, 7), (8, 7)])
	56	+ _, offsets, _ = bot.line_value(bot.line_at(7, 7, 1, 1, 0))
	57	+ self.assertEqual(offsets, {-3, 2})
	58	+
	59	+ def test_edge_is_closed(self):
	60	+ self.stones([(0, 7), (1, 7)])
	61	+ _, offsets, _ = bot.line_value(bot.line_at(2, 7, 1, 1, 0))
	62	+ self.assertFalse(offsets)
	63	+ self.assertNotEqual(bot.line_at(2, 7, 1, 1, 0)[0], '.')
	64	+
	65	+ def test_snapshot_restart_and_blocked_cells(self):
	66	+ commands = 'START 15\nBEGIN\nBOARD\n0,0,3\n1,0,2\nDONE\nRESTART\nBEGIN\nEND\n'
	67	+ out = io.StringIO()
	68	+ old_stdin = sys.stdin
	69	+ try:
	70	+ sys.stdin = io.StringIO(commands)
	71	+ with contextlib.redirect_stdout(out):
	72	+ bot.main()
	73	+ finally:
	74	+ sys.stdin = old_stdin
	75	+ lines = out.getvalue().splitlines()
	76	+ self.assertEqual(lines[0:2], ['OK', '7,7'])
	77	+ self.assertNotIn(lines[2], ['0,0', '1,0'])
	78	+ self.assertEqual(lines[3:], ['OK', '7,7'])
	79	+ self.assertEqual(bot.board, {(7, 7): 1})
	80	+
	81	+ def test_board_replaces_previous_position(self):
	82	+ self.stones([(14, 14)], 2)
	83	+ old_stdin = sys.stdin
	84	+ try:
	85	+ sys.stdin = io.StringIO('BOARD\n0,0,3\n1,0,2\nDONE\nEND\n')
	86	+ with contextlib.redirect_stdout(io.StringIO()):
	87	+ bot.main()
	88	+ finally:
	89	+ sys.stdin = old_stdin
	90	+ self.assertNotIn((14, 14), bot.board)
	91	+ self.assertEqual(bot.board[(0, 0)], 3)
	92	+ self.assertEqual(bot.board[(1, 0)], 2)
	93	+ self.assertEqual(len(bot.board), 3)
	94	+
	95	+
	96	+if __name__ == '__main__':
	97	+ unittest.main()