13602 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!
although I disagree with the initial moves.
this one is hard
Just curious, Does anyone see from just looking at the initial board, that white has a forced win? Or when playing a game you would just make the best moves??? If you can see that white has a forced win, what did you look at, or what did you see? what are some things I need to look for??
I take decisions in these puzzles exactly the way I play OTB. My goal is to find the best move with the least amount of calculation. In this case, I solved the puzzle in 3 steps:
phase 1: calculating forcing lines
- check material, see that white is winning.
- start calculating forcing lines. My first glance was Rd7+ Kb8 Rxg7. I evaluate this as winning for white but not resignable yet. This becomes my main line.
- consider other forcing checks / captures. I happened to look at Nb5+ next. First I tried Nb5+ cxb5 Rd7+. The king has a couple choices, I tried Kb8 Be5+ Ka8 and ran into a wall. I evaluate this as worse then my main line and discard it. I note that letting the king get to a8 kills my attack, and try Nb5+ cxb5 Be5+ Kc6. I look for forcing continuations, and see Rc3+, Bd7+ ... oh, Bd7+ Kc5 Bd6#... is mate! ok. So Nb5 cxb5 wins for white.
Now I looked at Nb5+ Kb8 Bd4+ Ka8 Nc7+ Kg8. I can see that Ne6+ here wins the exchange, and I already evaluate this as better than my main line. So I cut off my calculation and call this my main line.
Return to calculating forcing lines in the original position... Nd5+ cxd5 ... wait, no, Nd5+ Kb8 transposes to the main line and this is black's option. No need to calculate Nd5+ cxd5 since black will only play this if it worse for me then my main line. Ignore.
So I am ready to move. I go to the puzzle and play Nb5+ Kb8 Be5+ Ka8 Nc7+.
Phase 2: where to put the knight.
- from phase 1 I already have a main line: Ne6+ Ka8 Nxc8. I extend a little farther and see Rxc8 Bxg7 picking up another pawn too. I evaluate this as totally winning for white. In time trouble I would play this instantly. With a few minutes to spare, I calculate the alternatives:
- Na6+ Ka8 and I see nothing better then just Nc7+ repeating moves. Discard.
- Ne8+... aha this allows Rd8... Ka8 Rd8+ Bc8 Rxc8+ Kb7. I can't stop calculating just yet since the knight is pinned. However I see that Rc7+ followed by Ne6 will save the knight. Since I prefer to win the bishop then to win the exchange, and I can see that there is still some life in this line left to calculate, I evaluate this as better then Ne6+ and continue...
- Rd8+ Rxd8... Ne6+... nothing really coming to mind here. I am ready to move.
So I go to the puzzle and play Ne8+ Ka8 Rd8+ Bc8 Rxc8+ Kb7.
Phase 3: calculating the win.
Same song, different verse. I know that I have Rc7+ and just save the knight, with a winning 3 minor pieces vs a rook endgame. I calculate a few more forcing lines to see if there is a mate:
- Nd6+ is nice, only 1 answer... Ka6... Bf1+ b5... Bxb5+ cxb5 Rc6+ Ka5... seems promising but I'm not quite seeing the knockout. I put this under "consider again later" and return to other ideas
- Rb8+ Ka6 Bc8+ Kb5 I have h5+, f5+... oh wait, I see that Rb8+ Ka6 Nc7+ only allows Ka5... now Bc3+... is mate! ok I'm ready to play.
Rb8+ Ka6 Nc7+ Ka5 Bc3 winner winner chicken dinner.
So this mate in 9 can be taken over the board as three different 3 move combinations. You don't have to see the whole thing up front to solve it. Hope that helps.
THANK YOU!!! Yes this helps. There is a lot to digest here, and I will study it a lot more. I really appreciate the time you put into this analysis.
I got this one, wow.
Heil! A Beautifully leadin' puzzle! One step by step, lettin' my Intuition gade me. I Shall Play like this in a Rated Game of Chess some day. Thank you so much.
Believe it or not, I got it all right first try! Me!!
I was surprised I got the first 3 moves correct.
But I got all correct.
Well then, this one was fun! I enjoyed this puzzle. Thanks!
good puzzle but all moves are easy to catch
why not on the third move do Ka6#
Perhaps you are asking why not 4. Na6#? The king just moves back to a8, and there is no forcing follow-up.
I find I go through phases with chess. I stop playing, then I want to pick it up and learn it again, then I go and look at something like this and fail, and then I go back to not wanting to play. :P
never would have seen this finish in a game but I may have played it anyway. It helps to know that a 9 move mate is there ahead of time.... i love chasing a king! Woof woof.
good but what about 6.Bxc8? threatening 7.Ba6# and 7.Bd7 and 8.Bxc6 checkmate.
Instead of 8.Nc7+ is 8.Bf1+ equally valid?
That was my first thought, but after b5 white takes a bit longer to finish the job. I think you have to play Nc7+ anyway, then Ka5 and now after Bc3, there is b4 before Bxb4# (mate in 11).
I thought the key move after spotting that Nb5+ was possible, was the discovered check 4. Ne8+ blocking the back rank cover provided by the rook on f8. After that it was just a case of finding the fast way to finish off the king hunt.
If 8. Bf1+? then 8...Rxf1+, although white is still winning easily because of the threat of Nc7+. For example after 9. Kb2 Rb1+ 10. Kxb1 Rxe8 11. Rxe8, the outcome is clear, but checkmate is delayed. If instead 9...Rf3 10. Nc7+ Ka5, white doesn't have 11. Bc3# because of 11...Rxc3, but white does have of course, 11. Rxh8, easily winning.
That was ez
6. Bxc8 allows 6...Rxe8. Any discovered checks by white allow 7...Rxd8 except for 7. Bb7+. In that case 7...Kxb7, and black appears to be winning being up a rook for a bishop with no forcing checkmate for white. If instead of 7. Bb7+ the white rook moves off of the eighth rank then 7...Rxc8 or perhaps 7...Rxe5. If 7. Rxe8 Rxe8, black's rook forks the white bishops at c8 and e5. In all of these variations black comes out ahead a rook for a bishop with no forcing checkmate for white.
This puzzle was fun
What happens if the game is played, the continuation of this move?1. Nb5+ cxb5?
The ultimate reason why you should never ever ever ever ever ever resign...
by MzJavert 3 minutes ago
Was this position a win, draw or loss?
by andi883 4 minutes ago
I am quitting chess.
by ConnorMacleod_151 7 minutes ago
12/9/2013 - Mate in 3
by bishop1969 9 minutes ago
can I be an IM before i die?
by jamestweeddale 9 minutes ago
Chess Troll for the Year!
by Soorat92 9 minutes ago
Can Anyone Become Grandmaster?
by Dodger111 12 minutes ago
Should we only target paid chess.com members to be our students?
by Innovative_King 14 minutes ago
Where is logical thinking in the chess ?
by Rumo75 15 minutes ago
Is the Caro-Kann the opening I was searching for or should I go for 1...e5 ?
by benign_man 16 minutes ago
Why Join | Chess Topics |
Help & Support |
© 2013 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!