Silence per-ply progress messages during SPRT

README.md

@@ -289,11 +289,13 @@ tunex -c configs/ironphoenix.json sprt
 ```
 
 Tunex immediately prints the two engine paths and search settings, then
-shows when each game starts, when its position reaches another 16 plies, and
-as soon as each game finishes. In multi-worker tests, progress lines may be
-interleaved; each line includes the game number. Game counters and W/D/L are
-updated after each completed game; SPRT LLR, hypothesis boundaries, Elo
-estimates and decisions are evaluated at **completed batch boundaries**.
+shows when each game starts and as soon as each game finishes, without
+printing repeated per-ply `Game ... playing | ply ...` messages.
+In multi-worker tests, start and completion lines may be interleaved; each
+includes the game number. Game counters and W/D/L are updated after each
+completed game; SPRT LLR, hypothesis boundaries, Elo estimates and decisions
+are evaluated at **completed batch boundaries**. Fixed matches retain
+their existing per-ply progress messages.
 
 Progress output is unbuffered (`flush=True`). For older installs, run
 `git pull` and `python -m pip install -e .` before rerunning Tunex.

src/tunex/cli.py

@@ -43,9 +43,13 @@ def command_probe(config: Config) -> int:
     return 0
 
 
-def _game_progress(label: str, lock: threading.Lock):
+def _game_progress(
+    label: str, lock: threading.Lock, *, show_playing: bool = True
+):
     """Progress callback is called on worker threads; serialize console lines."""
     def report(spec: GameSpec, stage: str, plies: int) -> None:
+        if stage == "playing" and not show_playing:
+            return
         with lock:
             team = "Red+Yellow" if spec.candidate_team == 0 else "Blue+Green"
             if stage == "starting":
@@ -136,7 +140,7 @@ def completed(record: GameRecord, batch_wdl: WDL) -> None:
 
         batch_wdl, _ = runner.run(
             games=batch, offset=played,
-            on_progress=_game_progress("SPRT", output_lock),
+            on_progress=_game_progress("SPRT", output_lock, show_playing=False),
             on_game_complete=completed,
         )
         total.extend(batch_wdl)

tests/test_live_progress.py

@@ -1,12 +1,13 @@
 """Live progress covers games that have not finished and SPRT batches."""
 
+import threading
 from types import SimpleNamespace
 from unittest.mock import patch
 
-from tunex.cli import command_sprt
+from tunex.cli import _game_progress, command_sprt
 from tunex.config import SearchConfig, SprtConfig, VariantConfig
 from tunex.engine import SearchResult
-from tunex.match import MatchRunner
+from tunex.match import GameSpec, MatchRunner
 
 
 class FakeEngine:
@@ -87,6 +88,27 @@ def test_legacy_match_without_callback_does_not_change_engine_contract():
     assert len(records) == 2
 
 
+def test_sprt_quiet_progress_does_not_change_match_progress(capsys):
+    spec = GameSpec(game_id=7, candidate_team=1)
+    quiet = _game_progress("SPRT", threading.Lock(), show_playing=False)
+    quiet(spec, "starting", 0)
+    quiet(spec, "playing", 0)
+    quiet(spec, "playing", 16)
+    assert capsys.readouterr().out == (
+        "[SPRT] Game 8 starting | candidate Blue+Green\n"
+    )
+
+    verbose = _game_progress("Match", threading.Lock())
+    verbose(spec, "starting", 0)
+    verbose(spec, "playing", 0)
+    verbose(spec, "playing", 16)
+    assert capsys.readouterr().out == (
+        "[Match] Game 8 starting | candidate Blue+Green\n"
+        "[Match] Game 8 playing | ply 0\n"
+        "[Match] Game 8 playing | ply 16\n"
+    )
+
+
 def test_sprt_prints_start_per_game_and_batch_decision(capsys, tmp_path):
     cfg = config(workers=2, plies=17)
     cfg.match.results_file = str(tmp_path / "games.jsonl")
@@ -100,7 +122,9 @@ def test_sprt_prints_start_per_game_and_batch_decision(capsys, tmp_path):
     assert "workers=2 | go movetime 250" in output
     assert "Game 1 starting" in output
     assert "Game 2 starting" in output
-    assert "ply 16" in output
+    assert "[SPRT] Game 1 playing | ply" not in output
+    assert "[SPRT] Game 2 playing | ply" not in output
+    assert " playing | ply " not in output
     assert "[SPRT] Completed 1/2" in output
     assert "[SPRT] Completed 2/2" in output
     assert "SPRT reached max_games" in output