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!

^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

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

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

@ 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.

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

by 0-1, i mean -+. I' ll pass now,these are a bit to difficult for me :p
I will wait for something easier.

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