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8 votes
3 answers
1k views

Retrograde analysis of a position in "The Flanders Panel"

2 votes
1 answer
501 views

What is the largest n such that discrete forced mate in one through mate in "n" exist?

6 votes
2 answers
911 views

Legal positions with one color to move only?

3 votes
1 answer
212 views

A little Silvester puzzle

22 votes
1 answer
3k views

Basic "mate in one move" puzzle - what am I missing?

38 votes
1 answer
9k views

When was it possible for a player's king to be attacked by 3 of the opponent's pieces?

4 votes
2 answers
2k views

How many times can the same pawn move be made in a game?

1 vote
2 answers
187 views

Piece Peace Puzzle

2 votes
1 answer
130 views

How many unoriginal pawn moves can be made in a single game?

8 votes
4 answers
2k views

Longest sequence of unique series moves

12 votes
3 answers
1k views

Position where neither player can force a win and neither player can force a draw

3 votes
2 answers
2k views

Position where neither player can force an *exact* outcome

6 votes
1 answer
165 views

Do any unique proof games feature an en-passant capture?

6 votes
0 answers
160 views

Open problems in chess involving maximum material imbalances

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