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Chess puzzles again!: 10/2/2015 07:41:56


szeweningen 
Level 60
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Hello,

Yesterday motivated me to restart the thread. In this position it is white to move:



After the tournament 2 of my chess buddies showed me this position in which white resigned due to imminent mate or queen loss. Should white have resigned?
Chess puzzles again!: 10/2/2015 08:04:36


Thomas 633
Level 56
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Yes.
Chess puzzles again!: 10/2/2015 10:37:53


Vernita Green
Level 56
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Qxf4
xf4
Bxf4

Then Knight and Rook can delay two turns

b8
Kb6

checkmate
Chess puzzles again!: 10/2/2015 10:59:12


szeweningen 
Level 60
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1. Qf4+ gxf4
2. Bxf4+ Ka8
3. Nb6+ axb6
4. axb6+ Na6 and black stops immediate checkmate.
Chess puzzles again!: 10/2/2015 11:33:20


shyb
Level 59
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im not that great at chess, but it looks to me like whites only two moves are to move the king (or bishop, to accomplish same goal) or put black in check. either way white will lose its queen.
Chess puzzles again!: 10/2/2015 11:49:54


Vernita Green
Level 56
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1. Qf4+ gxf4
2. Bxf4+ Ka8
3. Nb6+ axb6
4. axb6+ Na6 and black stops immediate checkmate.


Ah I just glanced over it.
Well then,

1. Qf4+ gxf4
2. Bxf4+ Ka8
3. Nb6+ axb6
4. axb6+ Na6
5. Rxa6+ xa6
6. Rxc8+ Rxc8
7. Bg2 checkmate with one delay move.

Edited 10/2/2015 11:50:01
Chess puzzles again!: 10/2/2015 11:50:26


kergemarha 
Level 62
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1. Qf4+ gxf4
2. Bxf4+ Ka8
3. Nb6+ axb6
4. axb6+ Na6 and black stops immediate checkmate.
5. Rxa6+ bxa6
6. Rxc8+ Rxc8
7. Bg2+ Rc6
8. Bxc6

Checkmate, white wins.
Chess puzzles again!: 10/2/2015 12:44:33


szeweningen 
Level 60
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1. Qf4+ gxf4
2. Bxf4+ Ka8
3. Nb6+ axb6
4. axb6+ Na6
5. Rxa6+ bxa6
6. Rxc8+ Kb7

and black king escapes.
Chess puzzles again!: 10/2/2015 12:56:48


Vernita Green
Level 56
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1. Qf4+ gxf4
2. Bxf4+ Ka8
3. Nb6+ axb6
4. axb6+ Na6
5. Rxa6+ bxa6
6. Rxc8+ Kb7

and black king escapes.


Then 7.Rc7+ Kb8 or Ka8

if Ka8 then
8.Bg2

if Kb8 then
8.Re-h7+ Kc8
9.b7
Chess puzzles again!: 10/2/2015 12:59:14


szeweningen 
Level 60
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After Rc7+ king can take the pawn on b6 and black is up a lot of material.
Chess puzzles again!: 10/2/2015 12:59:53


ps 
Level 60
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1. Qf4+ gxf4
2. Bxf4+ Ka8
3. Nb6+ axb6
4. axb6+ Na6 and black stops immediate checkmate.


nice one, hadn't thought of that
Chess puzzles again!: 10/2/2015 13:13:04


kergemarha 
Level 62
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With another 5th move:

1. Qf4+ gxf4
2. Bxf4+ Ka8
3. Nb6+ axb6
4. axb6+ Na6
5. Rxc8+ Rxc8
6. Rxa6+ bxa6
7. Bg2+ Rc6
8. Bxc6
Chess puzzles again!: 10/2/2015 13:29:08


szeweningen 
Level 60
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Exactly kergemarha! At first it was tricky for me to find that move order, but when you analyse the only chance Qf4+ it proves to be the only way to keep the black king in a mating net. You can post next problem or I'll post one if you don't want to.
Chess puzzles again!: 10/2/2015 13:36:36


kergemarha 
Level 62
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I'm afraid, I can't post a problem. I haven't played chess for ages and I'm not really good at making up boards. :)
Chess puzzles again!: 10/2/2015 13:52:48


szeweningen 
Level 60
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This one is from a recent game of mine, black to move, what's the best move?
Chess puzzles again!: 10/2/2015 14:00:46


Pink 
Level 60
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if i was playin that agme i would stall... wait, it wouldnt just be in that agme, thats all i do in chess
Chess puzzles again!: 10/2/2015 14:07:08


TBest 
Level 60
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1. .... b4
2. Ne2 Nxe4
3. fxe4 Bxg5

(White can't recapture on g5, and Black is now a pawn up. + Black has pressure on c2 and h4.)

Edited 10/2/2015 14:08:51
Chess puzzles again!: 10/2/2015 14:16:38


szeweningen 
Level 60
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Exactly Tbest, the game went:
1. ... b4
2. Ne2 Nxe4
3. fxe4 Bxg5
4. Qxg5 Qxc2+
5. Ka1 Qxd1+
6. Nbc1 Rc2
7. Bg2 Qd2
8. Qxg7 Rxb2
9. Qxh8+ Nf8 0-1

You're encouraged to post your chess puzzle.
Chess puzzles again!: 10/2/2015 14:26:19


Master Ryiro 
Level 62
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i was wrong at first attempt but then figured out the same thing as kergemarha
nice one :)

Edited 10/2/2015 14:29:17
Chess puzzles again!: 10/2/2015 16:54:31


TBest 
Level 60
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This puzzle is intended to be solved WITHOUT the use of a board. Now exercise your mind!

1. e4 c5
2. Nf3 d6
3. d4 cxd4
4. Nxd4 Nc6
5. Nc3 e5
6. Nbd5 a6
7. Na3 b5
8. Nd5 Nf6
9. Bg5 h6
10. Bxf6 gxf6
11. c4 f5
12. cxb5 axb5
13. Bxb5 Bd7
14. 0-0 fxe4
15. Rc1 Ne7
16. ???

What is white's best continuation?

DO NOT POST ANSWERS IN THIS THREAD, you will know when you solve it :)


(This is from a game I played on lichess.org , a site well worth checking out!)
My profile ther: http://en.lichess.org/@/TBest
Game link: {SPOLIER} http://en.lichess.org/sUyYOzYryTrW
Chess puzzles again!: 10/2/2015 21:54:58


Sułtan Kosmitów 
Level 64
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You can't imagine how long did it take to me to find it. Taking the moves over and over in my mind and still couldn't see the position. Even when I finaly thought I've got it it was partly a lucky guess becouse I knew such move from budapest gambit. Waiting for more, but with a board, please!
Chess puzzles again!: 10/3/2015 20:07:50


TBest 
Level 60
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^Well a board you say, after this problems coming up you probably will miss my previous puzzle :)

Warning: Somewhat hard puzzles, for your weekend chess.

You are playing as Black. What is your best move? (The solution needs to explain why you can play that move.)
FEN: r4N2/1p3k2/3p3p/p3p1pq/1PP1P1nP/3P1pP1/3Q1PR1/1R5K b - - 2 30



Endgame study! White's turn to move. You are encouraged to share your variations for this one.
FEN: 8/8/5PK1/r6P/6P1/8/2k5/8 b - - 5 60




NOTE: Both puzzles are from online (Multiday) games, so it is only fair that you use a board to move pieces on.

Edited 10/3/2015 20:09:40
Chess puzzles again!: 10/3/2015 21:14:04


Sułtan Kosmitów 
Level 64
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The first one
... h6
Ne6 Kf7
Nf8 g5
Nd7 gh4
Rg2 hg3
Kg1 fg2
Kg2 Qh2
Kf3 g2
0-1
?

Edited 10/3/2015 23:43:02
Chess puzzles again!: 10/3/2015 22:01:42


Sułtan Kosmitów 
Level 64
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Second
After two hours and changing my mind several times I am of the opinion that it is 0-1. :(

Edited 10/3/2015 23:43:19
Chess puzzles again!: 10/4/2015 02:07:27


MindPalace
Level 55
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@ TheBest: About the 2nd puzzle (the endgame analysis),

1. Rd3 Rxb3 2. Rd7 Kxc5 3. Rxg7 b5 4. Rg6 Rb1 5. Rxh6 1/2-1/2 (Draw) // White can play 1. Re3 ... 2. Re7 for the same following line He can also add a check (3. Rc7+ Kd4 (only move to prevent useful future check). Here, White's moves were somewhat forced (With some variations that do not change the result) and Black was always able to get a draw, so this seems to be a draw.

About the 1rst one, I think Kosmitov found the right move (well done mate, quite an hard one ;)) but I find some of the continuation's moves not optimal:
White's best way I found to defend : 1. ... h6 2. Nh3 a4 (prophylaxic move; White won't be able to play Rxb7+ later on; let's white play a move but he has no way to defend more his king and he cannot make any real threat) 3. c5 g5 4. Qa2 (to control a2-g8 diagonal,cxd6 (opposed by Rfd8) Qc2 or Ra1 are other options) gxh4 5.cxd6 Kh8 (gets out of a possible pin and allows a rook to go on g8) 6. Rbc1 Rad8 7. d4 (Only counterplay I see white has) Qg6 -----> black is clearly better, maybe a little under a piece worth, but the position is really complexe.

Now, I consider Ne6+ a mistake, since:
1. ... h6 2. Ne6+?! Kh8! 3. Nxf8?? (Not taking and play bxa5 instead is already better, even if black ends up in a much better position) Rxf8 (White has no defense) 4. bxa5 g5 5. Rg2 (trying to save from mate) gxh4! (take seems fine too, but this one is nicer ;) ) 6. Rh2 Nxh2 and if white takes, simple checkmate with: 7. kxh2, hxg3+ 8. Kg1 Qh2+ 9. Kf1 Qh1# (Taking the N is not the only option, but if white tries to run he'll lose his b rook. and it will be R+N+Q vs Q, which is an obvious win).

These lines could be optimized and I probably forgot about some real options, but the main idea is that, at my knowledge, Black's best move is h6, White has no good way to answer to that and if White goes for the Rook, he'll be losing Hard against accurate play, unable to defend his K-side appropriately.
Chess puzzles again!: 10/4/2015 03:11:01


TBest 
Level 60
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For the first puzzle the point was indeed to play h6, and if white takes the Rock he losses to g5. After h6, Nh3 is white's best/only defence. Black then indeed has to play a4 to keep the advantage. Houdini gives this around -0.50 to black. I haven't looked into further variations from here, as many things are playable. As already mentioned the point was discovering that Ne6+ is a loosing mistake, and Nxf8 is resignable after g5.


@Sultan Kosmitow, Well done on the first one:) I am curious as to how you reached the conclusion that Black wins, care to share your variation?

@MindPlaceThe 2nd puzzle is a study. Finding 1. Rd3/Re3 Rxb4 2. Rd7 is only the beginning. By your 3rd move you have already missed an important variation. Of course, one also needs to see what happens in your variation, again declaring 5. Rxh6 draw is a bit too early. I would be expecting more moves to back up your conclusion
Chess puzzles again!: 10/4/2015 21:40:20


Sułtan Kosmitów 
Level 64
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by 0-1, i mean -+. I' ll pass now,these are a bit to difficult for me :p
I will wait for something easier.
Chess puzzles again!: 10/10/2015 01:46:32


TBest 
Level 60
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The game from the first puzzle above: http://www.chess.com/echess/game?id=114754718


New Puzzle... and you don't even get a bord, again xD

1.e4 e5
2.Nf3 Nc6
3.d4 exd4
4.Nxd4 d6
5.Nc3 Bd7
6.Bc4 Nxd4
7.Qxd4 c5
8.Qd5 Qe7
9.Qxb7 Rd8
10.O-O Be6
11.Bb5+ Bd7
12.Nd5 Qe5
13.Bf4 Qh5
14.Rad1 Ne7

What is whites best move?

(and yes this is also from one of my games)

Edited 10/10/2015 01:47:06
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