Apr 28, 2015 · The threefold repetition rule (also known as repetition of position) states that a player can claim a draw if the same position occurs three times, or will occur after their next move, with the same player to move and the same possible moves. The last means that the first time and the third time have both the same castling and en passant moves ...

Oct 14, 2018 · Many chess engines do just this. They assign a draw score to all twofold repetitions. However, some of the best chess engines such as Stockfish and Ethereal don't assign a draw score to all twofold repetitions. If the first occurrence of position p is not strictly after the root node then they don't assign a draw score to the twofold repetition ...

Dec 10, 2024 · I am looking for a sequence of White checks which forces a draw by perpetual check. And critically at least one (but not all) of the Black responses must also be a check. Ideally the Black check should force the White response. So out of e.g. 4 moves in a cycle, 3 are forcing checks. Or if the cycle is longer n+1 out of 2n moves are forcing checks.

Mar 2, 2014 · Stalemate as a draw then spread to Germany (1400s), Spain (1600s) and throughout Europe by 19th Century when the formal rules of what we know as classical chess were put in place. England was one of the final adopters of Stalemate as a draw in the 1800s (up until that point the stalemated player had actually been declared the winner).

Aug 25, 2018 · On lichess.org, you can control the "claim draw on threefold repetition automatically" setting. Yours is set to "when time remaining <30 seconds", but the opponent's must have been set to "Always". Players who normally play under faster time controls sometimes use the "Always" setting to ensure predictable draws under time pressure.

Jan 7, 2019 · According to Rob Weir’s tables, this variation results in a draw 79.9 percent of the time in master play, and usually quickly. (The average number of moves is 25, about 8 less than any other variation.) If anything, I think that Weir’s statistics understate the extent to which these six moves serve as a wordless draw proposal.

Oct 27, 2020 · Many players take it to mean what it seems to say, that a repetition has occurred 3 times, i.e. the position occurred once (no repetition), then again (1st repetition), then once again (2nd repetition; draw claim already available), and then one more time (3rd repetition, but 4th occurrence of the position; draw claim still available).

Jan 23, 2018 · The rules are very clear. Rule 9.4 states: "If the player touches a piece as in Article 4.3, he loses the right to claim a draw under Article 9.2 or 9.3 on that move." So you cannot claim a draw after or "during" the checkmate move. Either you claim a draw before touching a piece or you make the checkmate move and win. –

For the most part, a draw occurs when it appears that neither side will win. Draws are codified by various rules of chess including stalemate (when the player to move has no legal move and is not in check), threefold repetition (when the same position occurs three times with the same player to move), and the fifty-move rule (when the last fifty successive moves made by both players …

Sep 29, 2017 · The draw rate is roughly about 60% - 70%. There're lots of wins and losses. I believe white has more wins but it's not shown on the page. Chess engines aren't perfect, they do make mistakes. If SF makes a bad move at move 20, the same algorithm might find the win a move later (21) because it can search deeper and further.