{"action":"opened","issue":{"url":"https://api.github.com/repos/Axelrod-Python/axelrod-fortran/issues/65","repository_url":"https://api.github.com/repos/Axelrod-Python/axelrod-fortran","labels_url":"https://api.github.com/repos/Axelrod-Python/axelrod-fortran/issues/65/labels{/name}","comments_url":"https://api.github.com/repos/Axelrod-Python/axelrod-fortran/issues/65/comments","events_url":"https://api.github.com/repos/Axelrod-Python/axelrod-fortran/issues/65/events","html_url":"https://github.com/Axelrod-Python/axelrod-fortran/issues/65","id":266788769,"number":65,"title":"Possible strange behaviour with self interactions?","user":{"login":"drvinceknight","id":2131546,"avatar_url":"https://avatars2.githubusercontent.com/u/2131546?v=4","gravatar_id":"","url":"https://api.github.com/users/drvinceknight","html_url":"https://github.com/drvinceknight","followers_url":"https://api.github.com/users/drvinceknight/followers","following_url":"https://api.github.com/users/drvinceknight/following{/other_user}","gists_url":"https://api.github.com/users/drvinceknight/gists{/gist_id}","starred_url":"https://api.github.com/users/drvinceknight/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/drvinceknight/subscriptions","organizations_url":"https://api.github.com/users/drvinceknight/orgs","repos_url":"https://api.github.com/users/drvinceknight/repos","events_url":"https://api.github.com/users/drvinceknight/events{/privacy}","received_events_url":"https://api.github.com/users/drvinceknight/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-10-19T10:08:01Z","updated_at":"2017-10-19T10:08:01Z","closed_at":null,"author_association":"OWNER","body":"Looking at `k42r` (which is marked as not Stochastic) does not play against itself in a symmetric way:\r\n\r\n```python\r\n>>> players = (axlf.Player(\"k42r\"), axlf.Player(\"k42r\"))\r\n>>> match = axl.Match(players, turns=200)\r\n>>> results = match.play()\r\n>>> results[25:30]\r\n[(C, C), (C, D), (D, D), (D, D), (D, D)]\r\n```\r\n\r\nSo on turn 27 (`(C, D)`) the second `k42r` defects: which obviously it should not because the histories up until then are the same (have checked: this is not a stochastic effect).\r\n\r\nI think this requires carefully walking through the strategy but points towards perhaps a problem with self interactions?"}}
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