19107 Players currently online!
Man vs. Machine - good luck!
Turn-based games at any time!
Vote for the best move to win!
Do you have what it takes?
Sharpen your tactical vision!
Get advice and game insights!
Learn from top players & pros!
View millions of master games!
Your virtual chess coach!
Perfect your opening moves!
Test your skills vs. computer!
Find the right private coach!
Can you solve it each day?
Bring it all together!
Beginners, start here!
Make friends & play team games!
News from the world of chess!
Search all Chess.com members!
Find local clubs & events!
Who's the best of your friends?
Read what members are saying!
OK - what you just said about the Bf8 'disappearing beneath the line of pawns' - apply that same reasoning to white's Bishop.
Yes, even if some white knight took the black square bishop from beneath the white pawn structure, we would be at loss of one white piece to get the c7 pawn to h2 square. Sorry... just that it takes me a while to understand things lol
Don't worry about it - it's meant to take some time to solve, especially for people who have not seen many retrograde problems.
I have two of Raymond Smullyan's books of retrograde puzzles. I imagine omnipaul (who was quite a bit clearer in explaining the solution than I) had also seen similar stuff before.
Those are good intro books. I have read Holmes and I started Arabian Knights recently.
This is a very interesting concept of chess problems. Thank you for posting them here.
Would you happen to know any online source where I could find more of such problems?
The Retro Corner is a good starting point.
Thanks BigDoggProblem, you are cool!
Wow. Unexpected. I hadn't even thought of the captures.
of course both of them are - likely no way
tmkroll and omnipaul have it right. In the 2nd one, you need 6 black pawn captures on dark squares but you have only 5 white pieces that could have been sacrificed on dark squares. Position 2 is illegal.
Position 1 is legal because the doubled pawn is on a white square, which means you only need 5 dark-square captures.
I think this is the best summary! Well put, Mr. Dogg, and nice puzzle! =)
woowww. interesting puzzles! did u make these yourself?
I did this one myself, although I knew of the idea from other retro puzzles.
Admins: Spam alert, you may wish to check this
by cardinal46 a few minutes ago
12/22/2014 - Peter Leko vs Alexander Morozevich, Nice, 2009
by Crimson_Heart 120 seconds ago
Get Free Coaching
by ConnorMacleod_151 3 minutes ago
If You Could Fix One Thing On Chess.com, What Would It Be?
by HessianWarrior 6 minutes ago
Who are you supporting in the upcoming rematch b/w Anand and Carlsen ?
by camberfoil 6 minutes ago
Why do strong players stop playing chess
by YeOldeWildman 11 minutes ago
ღ OFFICIAL 2014 Chess.com Awards ღ
by ConnorMacleod_151 12 minutes ago
Are these openings?
by bot977 16 minutes ago
30/30 Instead of 45/45
by ipcress12 18 minutes ago
I was told to forget about studying openings, HELP!
by I_Am_Second 20 minutes ago
Why Join | Chess Topics |
Help & Support |
© 2014 Chess.com
• Chess - English
We are working hard to make Chess.com available in over 70 languages. Check back over the year as we develop the technology to add more, and we will try our best to notify you when your language is ready for translating!