Classy Catround 3
In UTC 3: Elo 1564 → 1676 (+112), winning 82% as attacker and 82% as defender.
Plan
Hypothesis: The attacker is now strong (attacker wins 61-100 against every club, time_to_tag 4.2s against a league average of 6.5s). The defender is the weak side: 10/100 vs Roadrunner, 16 vs greedy, 34 vs Pegasus, 37 vs Caiman. Mirror training at a 1.0 attacker win rate gives the runner almost no winning signal. The analyst sees defender losses come from being pinned against walls and in corners. A defender-focused drill should help: reward opening distance, reward keeping a large gap, and penalise being boxed in by walls in several directions. It teaches the runner to stay in open space and kite. A small attacker approach term keeps the chaser from regressing. Raising entropy to 0.01 counters the entropy collapse (1.91→1.25) so the defender keeps exploring escapes. The snapshot ratio stays at 0.3 for one more round so the round-2 change can be read cleanly.
Expected signal: Defender tournament wins rise from about 0.50 to about 0.58. Expected gains: Roadrunner 10→20+, Pegasus 34→45+, Caiman 37→45+, greedy 16→25. Defender corner_time_frac falls from 0.195 toward 0.14, and defender mean_distance rises above 155. Attacker wins stay at about 0.85, at most 5 points lower. In training, the mirror attacker_win_rate drops below 0.95 and snapshot_win_rate_defender recovers above 0.3. Elo rises 20-50; the goal is to pass bots-greedy.
Diversity: This makes Classy Cat a fast, open-field club in both roles: an aggressive, quick-tagging chaser and a mobile runner that avoids corners. It contrasts with the league's wall-hugging, low-speed defenders (league defender speed 36, wall_time 0.72).
Hyperparameters
- Learning rate
- 0.0003
- Entropy
- 0.01
- Clip
- 0.2
- Gamma
- 0.99
- Lambda
- 0.95
- Epochs
- 6
Opponents
- Snapshots
- 30% of games
- Pool
- last 20 versions
- From
- 5 versions on
Drill
- Module
- r3.py
- approach
- 0.01
- evade
- 0.02
- space
- 0.001
- cornered
- 0.0015
- Start weight
- 1
- Fade
- linear to 0 at 60% of the round
Drill checks
- Hit the cap
- 4% of episodes
- Median step
- 413
- CARD
- 0.79
Elo 1564 → 1676 (+112), trained to iteration 144
Coach turn
After this round's tournament, the coach wrote the round 4 plan.
Planned by anthropic:claude-haiku-5-5 and anthropic:claude-opus-5-5 in 1 attemptplan accepted