User Noam D. Elkies - Chess Stack Exchange

Noam D. Elkies

Member for 8 years
Last seen this week

math.harvard.edu/~elkies
Harvard University, Cambridge, MA 02138

92 Answers

Score Activity Newest

29 votes

What moves solve this mate in 2?

answered May 11, 2020 at 19:02

26 votes

On an infinite board, which pieces are needed to checkmate?

answered Dec 19, 2020 at 6:18

22 votes

Accepted

Elo loss for resign vs checkmate

answered Dec 23, 2016 at 4:45

21 votes

Accepted

Positions where pawn promotion to queen is worse than to other piece

answered Mar 7 at 21:15

20 votes

Accepted

What is the longest known sequence of forced moves leading to a checkmate for one side?

answered Feb 26, 2017 at 3:06

16 votes

Accepted

Can a King and a Knight force stalemate against a lone King?

answered Jan 17, 2016 at 4:23

16 votes

Fastest possible checkmate by en passant

answered May 2, 2018 at 1:07

16 votes

Ruy Lopez Main Line - Why not Be7 before Nf6?

answered Feb 26 at 4:05

12 votes

Find a KNP-KQ endgame in which Black loses

answered Mar 9, 2021 at 21:35

12 votes

Longest sequence of mutually forced moves

answered Nov 29, 2015 at 23:18

11 votes

Why would one promote a pawn to a knight?

answered Nov 29, 2015 at 4:08

11 votes

Pawn giving checkmate

answered Aug 4, 2016 at 5:33

11 votes

Chess positions that are easy for humans but near impossible or confusing for computers

answered Jan 16, 2021 at 0:09

11 votes

Five Knights Problem

answered Mar 10, 2018 at 21:37

11 votes

Accepted

Position where neither player can force an exact outcome

answered Nov 8, 2022 at 2:37

10 votes

Accepted

Why doesn’t the computer like my odd queen trade?

answered Nov 13, 2019 at 4:30

10 votes

Accepted

How many windmills types exist in chess?

answered Sep 6, 2016 at 2:19

9 votes

Accepted

(4 Queens + 3 Pawns) vs (Entire Standard Army)

answered Aug 8, 2017 at 18:17

9 votes

What are some examples of promoting a pawn to a rook or bishop?

answered Nov 29, 2015 at 23:03

9 votes

Is it possible to have a double self-smothered stalemate?

answered Dec 28, 2015 at 0:49

9 votes

Helpmate of arbitrary length

answered Sep 23, 2017 at 1:23

9 votes

Accepted

Trying to remember a zugzwang puzzle/study position

answered Apr 15, 2021 at 19:48

8 votes

Selfmate problem

answered Dec 24, 2020 at 20:34

8 votes

Accepted

Checkmating the bare king with 3 knights – can the mate be forced on any edge square?

answered May 12, 2018 at 11:12

8 votes

Accepted

How to weakly solve Tiger Hunt, Atlantis Chess and Peasants' Revolt

answered Dec 8, 2015 at 5:08

8 votes

In the endgame KQ vs K, can you premove your way to checkmate?

answered Sep 7, 2016 at 22:09

8 votes

Accepted

How to handle resignations from unlost positions when learning?

answered Mar 27, 2016 at 4:04

8 votes

Has there been a game which was drawn with three queens?

answered Jul 15, 2016 at 6:12

7 votes

Accepted

Does playing tournament chess help one in the field of chess-related math?

answered Jul 29, 2016 at 17:58

7 votes

Accepted

Knight & Bishop vs. Queen

answered Aug 24, 2016 at 1:47

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