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Results tagged with retrograde-analysis
Search options answers only
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user 73836
Retrograde analysis is a technique employed to determine which events occurred leading up to a given situation.
4
votes
Pawn Or Bust, Save The Game
Can white castle?
Proof game showing that apart from that there are no restrictions
White still threatens mate in two (assuming 1 sec = 2 moves):
- 21.5k
2
votes
Accepted
3
votes
How old is Grandfather?
Here is one that ties @Joel's. I'm mostly posting it because it feels to me as if it has got some slack in it, so perhaps some one else can squeeze another move out of it:
Similar, same number of pli …
- 21.5k
2
votes
Chess 960 and Castling #2
Partial answer as OP appears to believe that moves by pawns can be ruled out.
They can't:
Here white can play 1.b3 2.Bb2 3.0-0-0.
The resulting position cannot be reached without castling and white c …
- 21.5k
5
votes
Accepted
Kingly Laziness
Proof game:
1. h4 a5 2. Nf3 Nf6 3. Nd4 Nd5 4. Nb3 Nc3 5. a3 Nxd1 6. Ra2 Ne3 7. Rh3 Nf5
8. Re3 a4 9. Re6 Ng3 10. Rb6 Nh1 11. Re6 axb3 12. Rd6 bxa2 13. Re6 axb1=B
14. Rd6 Ba2 15. Rc6 Bd5 16. Rd6 Be4 17. …
- 21.5k
5
votes
Accepted
Never kill your king ... without first seeking proper legal advice!
I think I've found a 30. But I'm not 100% sure since this retro analysis stuff is so error prone. What I am sure of is that some eagle-eyed community member will let me know in due course if I messed …
- 21.5k
3
votes
Accepted
Chess Construction Challenge #7: Double The Fun
Partly based on @Vepir's 19-move answer (Most similarity is due to convergence but I admit I borrowed the Bf1.)
Proof game:
Final position:
- 21.5k
5
votes
Accepted
Chess Construction Challenge #6: The One Move Royale
Here is another solution with
Position:
Proof game:
Alternative proof game: the pawns do all the work.
- 21.5k
2
votes
Accepted