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Alexander Motylev vs Sergei Azarov
European Championship (2009), Budva MNE, rd 10, Mar-16
Scandinavian Defense: Lasker Variation (B01)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Feb-05-15  diagonalley: wow! ... VERY neat... sadly, i failed to consider 30.P-Q7+! ... which cuts the cake
Feb-05-15  Funology: Well, I feel special today because I saw it all the way through to Qxc3. However I stumbled a bit on the Wednesday puzzle, going for a longer mate. Is the ability to solve harder puzzles more accurately than easier puzzles a useful chess skill? Heh, probably not.
Feb-05-15  gofer: It looks like its "rook week".

<28 Rxf7+ ...>

Black cannot refuse!

28 ... Ke8
29 d7#

28 ... Ke6/Kxd6
29 Qd5#

29 ... Kc8
30 d7+! Kb8
31 d8=Q+ Qc8
32 Rxb7+ Ka8
33 Qxa7#

<28 ... Bxf7>
<29 Rxf7+ ...>

29 ... Ke6/Kxd6
30 Qd5#

29 ... Kc8
30 Rf8+ Kd7 (31 d7+! Kb8 32 d8=Q+ Qc8 33 Rxb7+ Ka8 34 Qxa7#) 31 Qd8+ Ke6
32 Qe7#

29 ... Re7
30 Rxe7+ Kxd6 (Kc8 31 d7+! Kb8 32 d8=Q+ Qc8 33 Rxb7+ Ka8 34 Qxa7#)

31 Qd8+ Kc5
32 Rc7+ mating soon

<29 ... Ke8>
<30 d7+ Kxf7>
<31 Qxc3! Rexc3>
<32 d8=Q>


click for larger view

This must be it. The trade goes in white's favour, the black king is wide open in a Q+B v 2R end game...

~~~

Yep!!

Feb-05-15
Premium Chessgames Member
  Morten: Did not get this - one contributing factor being that I was looking for "black to move". - Rxh3+ works nicely if white takes, but not if white just plays Kg1.
Feb-05-15
Premium Chessgames Member
  Cheapo by the Dozen: Oh crumb. I got the general idea -- which was of course pretty obvious -- but miscalculated one bit. Probably would have gotten it right over the board, therefore, but for what initially would have been the wrong reasons.
Feb-05-15  M.Hassan: "Medium"
White to play 28.?
Equal

A) 28.Rxf7+ Bxf7
29.Rxf7+ Kxd6
30.Qd8+ Kc5
31.Rc7+ Kb4
32.Rxc3 Rexc3
White is stronger

B) 28.Rxf7 Ke6
29.R1f6+ Qxf6
30.Rxf6+ Kxf6
31.d7
Pawn will promote or at least a Rook is taken to stop promotion. White wins

C) 28.Rxf7 Re7
29.Rxe7+ Kxd6
30.Qd8+ Kc5
Line A can be continued with White even stronger

D) 28.Rxf7+ Bxf7
29.Rxf7+ Ke8
30.d7+ Kxf7
31.Qxc3 Rexc3
32.d8=Q
White is stronger
Time to review

Feb-05-15  Nick46: <Phony Benoni: 28.Rxf7+ Bxf7 29.Rxf7+ Ke8 was not so hard to see,...> Alas, poor Yorrick, speak for thyself.
Feb-05-15  wooden nickel: ... good moves like 31. Qxd3 are often easy, but also easy to miss... 31. d8=Q? would have been a nightmare due to the following 31. ... Rxh3+!


click for larger view

leading to mate and the extra White queen what have ended without a point back in the box!

Feb-05-15  Ratt Boy: 28...♖xh3+ 29.♗xh3, ♕xh3+ 30.♔g1, ♕g3+ 31.♔h1, ♗e4+ 32.♖g2, ♕xg2#. Not too tough.

Wait. White to move? My bad.

Feb-05-15  morfishine: <28.Rxf7+> and I'm in the camp with those who didn't see the nice finish 30.d7+

Instead, I spent an interminable amount on 28.Rxf7+ Bxf7 29.Rxf7+ Ke8 <30.Qh5>


click for larger view

*****

Feb-05-15  MarkFinan: https://play.google.com/store/apps/...

This year for all you puzzlers. If you have an Android tablet or phone then you'll *love* this. There's 3 settings. Easy, intermediate and hard. The Easy puzzles (there are 100 IN each category, some come up twice just in case you failed the first time) and with every puzzle you solve/dont solve you get an elo rating that goes up and down accordingly. The Easy puzzles are Tuesday level of difficulty. The intermediate puzzles are Thursday level, and the Hard are Sat/Sun and beyond....

Some of the games are absolutely brilliant, really unbelievable. I don't know whether they're made up puzzles or not, but judging by the amount of piece on the board I'd say they were real games, but it doesn't mention which games in the app. I'm going to check the fen's now.

I started with easy and completed 100 puzzles (they don't take too long on the easy setting) and got my estimated elo rating up to around 1820ish. I jumped straight up to the difficult setting, and once I'd finished the 100 My elo was down to 1584!?

Not all the puzzles end in a mate. If you're one of the guys that do these here at ceegee daily then when you have a spare couple of hours you *need* to try and solve them. The app is addictive and the games are absolutely brilliant! I'm going to see if they're in the database here now, so if someone does download the app (only a few megabytes in size) and has a go, I'd be interested to hear how you got on.

After just going through a 100 puzzles, today's puzzle here is a doddle.

Feb-05-15
Premium Chessgames Member
  Penguincw: I got 28.Rxf7+ Bxf7 29.Qf5+?.

I'm kinda surprised black resigned there in the final position. Of course, GMs know when their position is hopeless and will resign accordingly.

Feb-05-15  paavoh: Sharing the nice company of <QPhony Benoni> et al., having trouble finding 31.Qxc3. Note to self: start using a board and pieces for better visualization from now on...
Feb-05-15
Premium Chessgames Member
  backyard pawn: First, the obvious: I did not find today's solution.

I was looking at the simple 28. Qa4+ which adds a 2nd attacker against Black's rook on c2. Black must respond to the check, so won't White easily win the rook?

Feb-05-15
Premium Chessgames Member
  backyard pawn: Oops -- I didn't notice Black's bishop is also trained on c2. Please disregard my previous post!
Feb-05-15
Premium Chessgames Member
  TheaN: 5 February 2015 <28.?>

Both colors have their heavy pieces ready for launch against the opposing king. Given white's on the move, it clear suggests white will fire first. The only way to reach the black king is via <28.Rxf7+!> and from there the fun starts.

It's odd to decline the sacrifice as the black bishop does not do much besides defending f7, but lets consider those first.

A) <28....Ke6/Kxd6 29.Qd5# 1-0>. White's control over d5 suggests black should move to the back rank, not forward.

B) <28....Ke8 29.d7# 1-0>. e8 is not the square though.

C) <28....Kc8 29.d7+ Kb8 30.d8=Q+ Qc8 31.Rxb7+ Ka8 32.Qxa7# 1-0>. Letting the d-pawn go is not good either.

D) <28....Re7> odd defense, as Bxf7 would accomplish more by default <29.Rxe7+ Kxd6 30.Qd8+ Kc5 31.Qd5+ Kb4 (Kb6 32.Rxb7+ Ka6 33.Qb5#) 32.Rb1+ Rb2 (Ka3/Ka4 33.Rxa7+ with mate) 33.Rxb7+ > and the black position completely collapses.

Accepting is more sturdy:

E) <28....Bxf7 29.Rxf7+>

E1) <29....Kxd6/Ke6 and Kc8> lead to variations A and C respectively.

E2) <29....Re7> doesn't really fair differently than variation D <30.Rxe7+ Kxd6 31.Qd8+ Kc5> but with the f1-rook off the board, white should probably play <32.Rc7+ Kb4 33.Rxc3 > and go up queen and bishop against a sole rook. Maybe 32.Qd5+ leads to mate, but it couldn't picture it quickly.

E3) <29....Ke8> is the most study defense, given that the rook on f7 is now unprotected. White will actually go only up minor material. White should continue with <30.d7+!> regardless. After <30....Kxf7 31.Qxc3 Rcxc3 (either) 31.d8=Q > white is up queen and bishop for two rooks. Note that 31.Qf5+ does not work after 31....Kg7 32.Qg5+ Kf7 33.Bd5+ Re6! and I don't see how white can continue: at best it's perpetual.

Time to check.

Feb-05-15
Premium Chessgames Member
  TheaN: Guess I nailed it, but I have to admit I was looking for 20 minutes at 28.Rxf7+ Bxf7 29.Rxf7+ Ke8 30.d7+ Kxf7 31.Qf5+ Kg7 32.Qg5+ Kf7 33.Bd5+ Re6!. Everything in that combination says white should be able to force promotion and win easier than the Q+B vs 2R, but white can't. I'd say the best would even be 34.d8=N+! but black escapes from that too.

Guess I missed the easy defense 31.Qf5+? Ke7! as white can't control d7, d8 and e7 alone with the queen alone

Feb-05-15  CHESSTTCAMPS: Material is even, with both sides attacking. Black threatens Qxa5, but with the black major pieces all on offense, the black king is more lightly defended. The d6 pawn also gives white an extra attacker. As usual, the most forcing move on the board must be examined first.

28.Rxf7!

Careful calculation is required, because if white runs out out of checks, black may have a winning counterattack with Rxh3+ or some other line.

A) 28... Kxd6 (or Ke6) 29.Qd5#

B) 28... Kxc8 29.Rf8+ Kd7 30.Qd8+ Ke6 31.Qe7#.

C) 28... Ke8 29.Rf8+ Kd7 30.Rd8+ Ke6 31.Qd5#

D) 28... Re7 29.Rxe7+ Kxd6 (Kc8 30.Rf8+ etc) 30.Qd8+ Kc5

31.Qd5+ Kb4 (Kb6 32.Rxb7+ Ka6 33.Qb5#) 32.Rxb7+ Ka3 33.Rb3+

Kxa2 34.Rxc3+ etc.

E) 28... Bxf7 29.Rxf7+ Kxd6? 30.Qd5#

E.1) 29... Ke6 30.Qf5+ Kd6 31.Rd5+ Kc6 32.Qd7+ Kb6 33.Rb5+ Ka6

34.Qxb7#

E.2) 29... Kc8 30.Rf8+ Kd7 31.Rd8+ Ke6 32.Qd5#

E.3) 29... Ke8! (toughest) 29.d7+! Kxf7 30.Qxc3 (Qd5+ Kg7 31.Qg5+ Kf7 32.Bd5+ Re6 appears to hold, with queening prevented by the back-rank mate threats) Rexc3 31.d8=Q Rc7 32.Bxb7! and white appears to have a won ending (Rxb7 Qd5+)

Time for review.....

Feb-05-15
Premium Chessgames Member
  FLAWLESSWIN64: On move 25 Qa5 the die was casted already, Black must lose his Q! if 25..b6 then comes 26 Qg5! now if 26...Qxa1+ then there is 27 Rf1+! f6 28 Qxe3! & next 29 Qe7# so Black has to play 28...Qxf1+ to delay W's mate!
Feb-05-15  LivBlockade: <al wazir:> Good analysis. In your line, I think 34. Qd7+ is another way to pick up a rook in a few moves.


click for larger view

Black has to try 34...Kg8 (otherwise Qf5+ wins the c2 Rook) and then Qd5+ followed by either Qf5+ or Qd4+.

Feb-05-15
Premium Chessgames Member
  Longview: Unusual for me, I saw everything but the Queen de gras. I eventually runout of imaging capacity in the old ROM/RAM given in this older system I have.
Feb-05-15  Edeltalent: 28.? White to play

Equal material, but the black king is exposed (although the white one also doesn't feel completely comfortable). 28.Rxf7+ screams to be played, even more than in yesterday's puzzle, and after that, it's also quite straightforward. (Instead 28.Bc6+ bxc6 29.Qc7+ could be a cute idea, but it doesn't work one bit.)

After 28.Rxf7+ Bxf7 (not taking first only helps shortening the agony) 29.Rxf7+:

- 29...Kxd6 or Ke6 30.Qd5#

- 29...Ke8 30.d7+ Kxf7 31.Qxc3 Rxc3 (any) 32.d8Q and White is winning

- 29...Re7 30.Rxe7+ Kxd6 31.Qd8+ Kc5 32.Qd5+ and mate to follow soon

- 29...Kc8 and White can pick the win he likes best (e.g. 30.d7+ Kb8 31.d8Q+, or 30.Rc7+ Qxc7 31.dxc7, or 30.Bxb7+ Kb8 31.Rf8+), he should only stay away from 30.Bxb7+ Kb8 31.Qd8+? Qc8 32.Bxc8?? Re1+.

Feb-05-15  Edeltalent: <Morten: Did not get this - one contributing factor being that I was looking for "black to move".>

In that case, 28...Qxa5 should do the trick ;-)

Feb-05-15
Premium Chessgames Member
  agb2002: The material is identical.

Black threatens 28... Qxa5 and 28... Rxh3+ (29.Bxh3 Qxh3+ 30.Kg1 (30.Rh2 Qxh2#) 30... Qg3+ 31.Kg1 Be4+ 32.Rf3 Rh2#).

The black king looks defenseless. This suggests 28.Rxf7+:

A) 28... Bxf7 29.Rxf7+

A.1) 29... Kc8 30.Rf8+ Kd7 (30... Re8 31.Rxe8+ Kd7 32.Qd8#) 31.Qd8+ Ke6 32.Qe7#.

A.2) 29... Kxd6 (or 29... Ke6) 30.Qd5#.

A.3) 29... Ke8 30.d7+ Kxf7 31.Qh5+

A.3.a) 31... Ke7(6) 32.Qe8+ Kd6 (32... Kf6 33.d8=Q+ and mate next) 33.d8=Q+ Kc5 34.Qf8+ Kb5 (34... Kc4 35.Qd5#) 35.Qd7+ looks winning.

A.3.b) 31... Kf6 32.d8=Q+ and mate in two. For example, 32... Re7 33.Qf5+ Kg7 34.Qdf8#.

A.3.c) 31... Kf(g)8 32.d8=Q+ and mate in two.

A.3.d) 31... Kg7 32.Qg5+ Kf7 (else 33.d8=Q+ wins) 33.Bd5+ Re6 (33... Kf8 34.Qg8+ Ke7 35.d8=Q#) 34.d8=N+ (34.Qf5+ Kg7, threatening mate and trying to repeat moves but not 34... Qf6 35.Qxf6+ Kxf6 36.d8=Q+ Re7 37.Qf8+ wins)

A.3.d.i) 34... Kf8 35.Nxe6+ Kf7 (35... Ke8 36.Qg8+ and mate in two) 36.Qf5+ Qf6 (else 37.Qf8+ mating) 37.Qxc2 Qf1+ 38.Kh2 + - [B+N].

A.3.d.ii) 34... Ke8 35.Qg8+ Kd7 looks bad for White. This means that after 31.Qh5+ White must settle for perpetual. However, White has a much better and much simpler option:

A.4) 29... Ke8 30.d7+ Kxf7 31.Qxc3 R<any>xc3 32.d8=Q + - [Q+B vs 2R].

B) 28... Rc7+ wins.

C) 28... Ke8 29.Rf8+ Kd7 30.Qd8+ Ke6 31.Qe7#.

D) 29... Kxd6 (or 29... Ke6) 30.Qd5#.

Feb-05-15  patzer2: <Markfinan> Thanks for the tip on the puzzle app. One of my younger Grandsons is enjoying one with a coach, which gives him take back move options. I'm apparently out of practice on pawn promotion tactics, and so missed this Thursday's solution.

Here's my look with Fritz 12:

<28. ♖xf7+! ♗xf7 29. ♖xf7+ ♔e8>

29... Kxd6 30. Qd5#

29... Kc8 30. Rf8+ Kd7 31. Qd8+ Ke6 32. Qe7#

<30. d7+! ♔xf7 31. ♕xc3! 1-0>

Black resigns in lieu of 31...Rcxc3 32. d8=Q when play might continue 32...h6 (32... Rc1+ 33. Kh2 Rc2 34. Qd5+ Ke7 35. Qg5+ Ke6 36. Qxe3+ ) 33. Qd5+ Kf6 34. Qd4+ Kf7 35. Qxa7 Rc1+ 36. Kh2 Re2 37. Qxb7+ Kg8 38. Kg3 Rcc2 39. Bd5+ Kh8 40. Qf7 Rc8 41. g5 hxg5 42. Qh5+ Kg7 43. Qxe2 .

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