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Sergey Ionov vs Anatolij Yashtylov
RUS-ch 53rd (2000), Samara RUS, rd 4, Jun-20
Sicilian Defense: Scheveningen Variation. Matanovic Attack (B82)  ·  0-1



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sac: 15...d4 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Premium Chessgames Member
  Check It Out: Looks like this was a Sunday problem a month ago.
Feb-19-21  Walter Glattke: Good morning, I tested 21.Kd3 Qc4+ 22.Ke4 Re8+ 23.Kf3 Qd5+ 24.Kg3 Qxh1 25.Be2 Bh4+ 26.Kxh4 Bh4+ 27.Kxh4 Qxh2+ 28.Kg4 Rxe2 or 28.-h5+ or 28.Kg5 f6+ all leads to mate then. Less good was 22.-d3+. Better, I see, was 22.-Qc6+ 23.Kd3 Qf3+ 24.Be3 Qxe3#

After 21.Bc4 black can win with 21.-Qxc4+ 22.Bc3 dxc3 23.bxc3 Qe4+ 24.Re3 Qxh1 or even 24.-Rxc3+ 25.Qxc3 Bxc3 26.Kxc3 g6 by more pawns

No guarantee, all OTB analysis, enjoy the possible continuations.

Feb-19-21  Refused: 19...Rxc2 standard run of the mill sicil. rook sac. 20.Kxc2 Rc8+
a) 21.Kd3 Qc4+ 22.Ke4 Qc6+ 23.Kd3 Qf3+ 24.Be3 Qxe3# b) 21.Bc4 d3+ 22.Ke3 Re8+! (Bd4+ is tempting, but leads nowhere) 23.Kg3 h5! and curtains. THe dual threat of Bh4-Qg4# and Qg4-Re2 is just too much.
Feb-19-21  Brenin: This was a typically tough Sunday problem a month ago. Apparently it has become a little easier since then. First time round I got it, apart from final details of the mating net in the game line. The same happened this time, though I didn't recognise the puzzle until I looked at the solution.
Feb-19-21  saturn2: Black is a oiece down but can sacrifice anoher one 19...Rxc2+ 20. Kxc2 Rc8+ 

21. Bc3 Rxc3+ 22. Kd2 (Qxc3 dxc3 ∓) Rxa3

21. Kd3 Qc4+ 22. Ke4 Qc2+ 23. Bd3 (otherwise Qxd1) Qc6 mate

Feb-19-21  Nichth: The rook marches straight down Main Street and starts a satisfying attack that almost plays itself until the quieter H pawn push, which I found trickier to spot
Feb-19-21  Walter Glattke: Think, 22.-Qc2+ 23.Kf3 no quick mate then, of course wins.
Premium Chessgames Member
  malt: 19...R:c2+ 20.K:c2 Rc8+ 21.Kd3 Qc4+ 22.Ke4 Qc2+ 23.Kf3

( 23.Bd3,/23.Qd3 Qc6# )

23...Q:d1+ 24.Be2 Q:d2 wins

Feb-19-21  RandomVisitor: White had a nice attack going but lost the momentum. Perhaps best was 14.Qe2

click for larger view


<50/64 10:13 +1.42 14.Qe2 d5 15.Kb1 d4 16.Nxe4> Qc7 17.Bc1 Rfe8 18.Nxf6+ Nxf6 19.g5 Ng4 20.Rxd4 Bxg5 21.Qd2 Bf6 22.Rc4 Qb8 23.Rxc8 Qxc8 24.Bd3 Bd4

Feb-19-21  morfishine: An "only-mover" <19...Rxc2+> and lets see where this leads
Feb-19-21  lentil: Black's last move is a puzzle all by itself!
Feb-19-21  gofer: A simple "rook-reloader". It looks like white has no choice but to walk into a really ugly position, where its king is frog-marched around the board while black picks up pawns and then eventually wins back its sacrificed bishop and picks up white's queen. I wonder when white resigns?!

19 ... Rxc2+
20 Kxc2 Rc8+

Option 1 (mate in 4)

21 Kd3 Qc4+
22 Ke4 Qc6+
23 Kd3 Qf3+
24 Be3 Qxe3#

Option 2 (disaster)

21 Qc3 dxc3
22 Kd3 Qd5+
23 Ke2 cxd2
24 Rxd2 Qxh1 etc

Option 3 (mild disaster)

21 Bc3 Rxc3+
22 Qxc3 dxc3

Option 4 (mild disaster)

21 Bc4 d3+
22 Kxd3 Qxc4+
23 Ke3 Re8+
24 Kf3 Qe2+
25 Kg3 h5
26 Rdg1 Qg4+
27 Kf2 Bd4+
28 Be3 Qxf4+


No resignation - until mate was certain...

Feb-19-21  mel gibson: The first move was easy and then it was a King hunt.

Stockfish 12 says:

19... Rxc2+

(19. .. Rxc2+ (♖c8xc2+ ♔c1xc2 ♖f8-c8+ ♗d2-c3 ♖c8xc3+ ♕a3xc3 d4xc3 ♗f1-g2 c3xb2 ♔c2-d3 a7-a5 ♗g2-e4 ♕a2-b3+ ♔d3-e2 a5-a4 ♖d1-d3 ♕b3-b4 ♔e2-f3 a4-a3 ♗e4-d5 ♕b4-b5 ♔f3-e2 h7-h6 ♖h1-b1 ♕b5-a4 ♖d3xa3 ♕a4-c2+ ♔e2-e3 ♕c2xb1 ♗d5-a2 ♕b1-e1+ ♔e3-f3 ♕e1-f1+ ♔f3-e4 ♕f1-a1 ♖a3-a8+ ♔g8-h7 ♔e4-f3 b2-b1♕ ♗a2xb1 ♕a1xa8 ♗b1-d3 h6-h5) +9.32/32 237)

score for Black +9.32 depth 32

Feb-19-21  TheaN: Honestly, I missed Bc4 completely. I saw <19....Rxc2+ 20.Kxc2 Rc8+ 20.Bc3 (Kd3 Qc4+ 21.Ke4 Qc6+ 22.Kd3 Qf3+ 23.Be3 Qxe3#) Rxc3+ 21.Qxc3 dxc3 -+> and even though White has 2R:Q his queen side's gone.

The Bc4 line is rather critical, as Black was already a piece down. Anything xc4 doesn't work: Rxc4 blocks c4 for the queen, and Qxc4+ is just too slow. d3+! now is key, but as I didn't consider Bc4 I can't claim to have seen it. It is, logically, the move to follow.

Feb-19-21  saturn2: The silent 12.Kb1 would have prevented white's headache later on.
Premium Chessgames Member
  perfidious: <lentil: Black's last move is a puzzle all by itself!>

The way things have gone in POTDs for some time now, it is distinctly odds-on that this resurfaces as a Monday POTD before Black's killing stroke is delivered.

Premium Chessgames Member
  Fusilli: An IM beating a GM with flair. Nice.
Premium Chessgames Member
  chrisowen: Wart avo Rxc2+ food arrive ooh arrive usable guv wart krav maga trolley avo hey biscuit in i quagmire avo gong fong arrive mud juice its koala ivor mend product within cog bus avo Qa3 fluffs abridge axled its lo a volume arrive Bb4 gong accommodate arrive add give get it hub adagio Rxc2+ fec;
Premium Chessgames Member
  agb2002: Black has a pawn for a bishop.

White threatens Qxa2.

Black can further expose the white king with 19... Rxc2+ 20.Kxc2 Rc8+:

A) 21.Kd3 Qc4+ 22.Ke4 Qc6+ 23.Kd3 Qf3+ 24.Be3 Qxe3#.

B) 21.Bc3 Rxc3+ 22.Qxc3 (22.Kd2 Rxa3 wins decisive material) 22... dxc3 23.Rb1 (23.Rd8+ Bxd8) 23... Qa4+

B.1) 24.b3 Qa2+ 25.Kd3 (25.Kc(d)1 Qd2#) 25... Qxb1+ wins.

B.2) 24.Kd3 Qd4+ 25.Kc2 (25.Ke2 Qe4+ wins) 25... Qf2+ 26.Kd3 (26.Kb3 c2 27.Rc1 Qf3+ 28.Kxc2 Qxh1 wins) 26... Qd2+ 27.Kc4 c2 wins.

B.3) 24.Kc1 c2 wins.

C) 21.Qc3 dxc3 wins decisive material.

D) 21.Bc4 d3+ (21... Qxc4+ 22.Kb1; 21... Rxc4+ 22.Kd3)

D.1) 22.Qxd3 Qxb2#.

D.2) 22.Kxd3 Qxc4+ 23.Ke3 Re8+ 24.Kf3 (24.Kf2 Qe2+ 25.Kg3 -25.Kg1 Qxd1+ wins-) 24... Qe2+ 25.Kg3 h5 (threatens 26... Bh4+ 27.Kxh4 Qg4#)

D.2.a) 26.h3 h4#.

D.2.b) 26.h4 Qg4+ and mate in two.

D.2.c) 26.Qf3 Bh4+ 27.Kxh4 Qxf3 28.Rhg1 (28.Rdg1 Qf2+ wins the bishop) 28... Re2 wins.

D.2.d) 26.Rhg1 Qg4+ 27.Kf2 Bh4+ 28.Rg3 (28.Kf1 Qe2#) 28... Qxd1 wins decisive material.

D.2.e) 26.Rh(d)f(e)1 Bh4+ 27.Kxh4 Qg4#.

D.3) 22.Kc1 Rxc4+ 23.Bc3 (23.Qc3 Qa1#) 23... Rxc3+ 24.Qxc3 (24.bxc3 Qc2#; 24.Kd2 Rxa3 wins) 24... Bxc3 25.Rxd3 (25.bxc3 Qc2#) 25... Qxb2+ 26.Kd1 h6 wins decisive material.

Feb-19-21  1g1yy: <TheaN: Honestly, I missed Bc4 completely.>

Same here.

I had to go back to see just why Bc4 was played. At first it looked to me like a wasted-time cannon-fodder move. But after closer examination, I see if it's not played, white loses a rook and the bishop and possibly the Q, and still gets mated. So, if there was a chance some unseen saving move could be found, Bc4 gave white one extra move to find it, and saved some material.

Great puzzle. Much easier for my brain than the others this week.

Feb-19-21  RandomVisitor: After 19...Rxc2+ 20.Kxc2 Rc8+ white has two choices, both of which end up being no good, but both of which are critical to "solving" the puzzle:

click for larger view


51/82 6:03:34 -11.01 21.Bc3 Rxc3+ 22.Qxc3 dxc3 23.Bg2 cxb2 24.Kd3 Qb3+ 25.Ke2 Qc4+ 26.Rd3 Qxf4 27.Rhd1 h5 28.Bxb7 Qxh2+ 29.Kf3 Bg5 30.Bd5 Kh7 31.Ba2 Qf4+

51/53 6:03:34 -M26 21.Bc4 d3+ 22.Kxd3 Qxc4+ 23.Ke3 Re8+ 24.Kf3 Qe2+ 25.Kg3 h5 26.<Rhg1> Qg4+ 27.Kf2 Bh4+ 28.Rg3 Bxg3+ 29.Qxg3 Qe2+ 30.Kg1 Qxd1+ 31.Kg2 Qxd2+

Premium Chessgames Member
  HeMateMe: I got the first two moves right away, thinking "The King hunt is on! Let slip the dogs of war!"

But first, 21...d3, a subtle clearance move that brings black's Bishop into the game as an attacking piece.

Feb-19-21  Morty212: Can someone please explain white’s move 21. Bc4? I can’t find a reason for it, just seems like white is throwing that bishop away? Thank you in advance!
Feb-19-21  1g1yy: <Morty212: Can someone please explain white’s move 21. Bc4? I can’t find a reason for it, just seems like white is throwing that bishop away? Thank you in advance!>

If white tries to run instead of block with the bishop, he ends up losing both the rook and the bishop, doesn't connect the rooks ever, and still ends up in the same mating trap, just by a different route. Here's one possibility, I may be incorrect here, but I think this is just as forced as the game line and ends the same way.

21. Kd3 Qc4+ 22. Ke4 Qc2+ 23. Kf3 Qxd1+ 24. Kg3 h5 25. Bg2 Bh4+

As I said earlier, I questioned that move also, but there were several worse material losses in the short term and I suspect the player didn't see the inevitable end coming, so this briefly looked better. Hard to say.

Black played a great king hunt here.

Feb-19-21  alshatranji: Morty212: The only other move is 21.Kd3, to which 21...Qc4+, 22.Ke4 Qc3+, 23.Kd3 Qf3+, and mate next move. The text move gives White s little more hope.
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