Damonshogi's homepage is now http://daemonshogi.sourceforge.jp the http://www.users.yun.co.jp/~tokita/daemonshogi/ page is no longer there. Also there is a new version with minor bug fixes 0.1.4 that may or may not affect Gentoo. Mainly the home page should be updated.
It would fix some build errors (bug 143924) but I get this when I try to run 0.1.3 or 0.1.4 $ daemonshogi Gdk-ERROR **: BadMatch (invalid parameter attributes) serial 873 error_code 8 request_code 62 minor_code 0 Gdk-ERROR **: BadMatch (invalid parameter attributes) serial 875 error_code 8 request_code 62 minor_code 0
In portage. Thanks for the bug report.