OC6IPMESDIWRV7U4TONAB6R77E6TA55XWBSO7YHJYT3YS3LW6BWQC
DFYYOQMHA7M7WMELX5DHXP5DT5KGQLNJHXYDJZ5P5BIJCTCOQ7LQC
7GQ5TOWHFPXHGR7RFYWHWWMO32MDSVVK7WRLWDEROVTKCQRHRMTAC
GVX7YSQYURPWFSUWVUAORZJTQBJURWWNBNUGEZYFAUMX3X5LSACQC
next_pending_move = nil -- timestamp for next frame of animation