chess.zugriff.at: you (everyone) vs. the host

GET  /state           current position (FEN), whose turn, move list, vote tally
POST /vote            body: {"move": "<move>"}  or the plain move as text
                      move in SAN (e5, Nf6, O-O, e8=Q) or UCI (e7e5, e7e8q)

Answers
  200  {"ok": true, "san": "e5", "votes": 3}   your vote counts (you can change it)
  400  {"ok": false, "error": "illegal move"}  not legal in this position
  409  voting is closed (host to move, or game over)
  429  too many requests, wait a minute

One vote per visitor per move. The host plays the top vote.
Example:
  curl -X POST https://chess.zugriff.at/vote -d '{"move":"e5"}'