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Marco Massironi vs Felix Stips
Bratto Open-A (2007), Bratto ITA, rd 8, Aug-30
Sicilian Defense: Scheveningen Variation. Delayed Keres Attack Perenyi Gambit (B81)  ·  1-0



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Kibitzer's Corner
May-13-17  Walter Glattke: A) not good 15.Nxb5 ab5 16.Qxb5+ Nc6
B) not good 15.Bxb7 Qxb7 20.0-0-0 Nd7
C) better: 15.Bxd4
C1)15.-Bxd5 16.Nxd5
C2) 15.exd4 15.Qxe4+ Kd8 16.Bxb7 Ra7
further Analysis later
May-13-17  bcokugras: How would it go on at final position after black queen captures white knight?
May-13-17  PhilFeeley: <bcokugras> My question exactly. Probably something like: 20...Qxb6 21. Qa8+ Kc7 22. Qxd8+ and white is exchange up with still an attack.
May-13-17  mel gibson: I saw the first move straight away.
The computer gives only a 2 pawn advantage:

15. Bxd4 (15. Bxd4 (♗e3xd4 ♘b8-d7 O-O-O O-O-O ♗d4-e3 ♗f8-b4 ♗d5xb7+ ♕c7xb7 ♘c3-d5 ♘d7-c5 ♗e3xc5 ♗b4xc5 ♘d5-e7+ ♗c5xe7 ♕d3-c3+ ♗e7-c5 ♕c3xc5+ ♕b7-c7 ♖d1-d5 ♕c7xc5 ♖d5xc5+ ♔c8-b8 ♖h1-d1 ♖d8xd1+ ♔c1xd1 ♖h8-d8+ ♔d1-e2 ♖d8-d6 ♖c5xe5 ♖d6xf6 ♔e2-d3) +2.14/19 143)

score for white +2.14 depth 19

May-13-17  Walter Glattke: A) 20.-Qb6 21.Qa8+ Kc7 (Qb8 Rxd8+ Kxd8 Qxb8+) 22.Qxd8+ Kc6 23.Qd5+ and Qxe5 or 22.-Kb7 23.Qd5+ and Qxe5
B) 20.-Kc7 21.Rxd6 Rxd6 22.Qxe5 Kxb6
C) 20.Ne7+ Bxe7 21.Rxd6 Bxd6
May-13-17  dannydoc: 20.Ne7+ much better
May-13-17  Walter Glattke: People, you gave 15.Bd4 to the computers for finding Nd7, but Mikhail Tal had got many pawns here with e.g.
15.Nxb5 axb5 16.Bxf7+ the amateur plays now 16.-Kxf7 (Kd8!) 17.Qb3+ Kxf6 18.Qe6+ Kg7 19.Rg1# o.k. 15.Bd4 Nd7 now 16.Nxb5 axb5 17.Bxf7+ Kd8 18.0-0. Looks good in my eyes. Is his really wrong, or the comp too shy? I don't know.
May-13-17  Cheapo by the Dozen: Another poorly structured puzzle, alas.

Finding 14 Bxd4 was easy, because it didn't require seeing the combination that begins with 18 Bxe5. Even 18 Bc3 would have sufficed for a winning position.

May-13-17  goodevans: This really wasn't a Saturday strength puzzle but at least I found the game hugely entertaining.

Apparently the position after 13.Qd3 has been seen quite a few times before but <13...b5> was a complete novelty.

<13...dxe3> is the most common continuation but after <14.0-O-O> and <15.Nd5> white gets a strong attack that usually succeeds.

<13...dxc3> has also been seen several times and although white generally comes out on top this may still be black's best try.

May-13-17  morfishine: Odd position, <15...Bxd4> is the only move. Perhaps a different move # would make a better puzzle position


Premium Chessgames Member
  thegoodanarchist: Another puzzle from a 2007 game. Anyone else notice how frequently 2007 games pop up in the daily puzzle?

Something's afoot!

Premium Chessgames Member
  PawnSac: < dannydoc: 20.Ne7+ much better >

yes it is. Stockfish 7/64 gives..
37/68+ 5:07:59 5,764,041k 312k +17.55 Nd5-e7+ Bf8xe7 f6xe7 Qd6-h6+ Kc1-b1 Rd8-e8 Qe4xe5 Qh6-b6 Rh1-e1 Qb6-c7 Rd1-d6 Qc7xe7 Qe5xe7 Re8xe7 Re1xe7 Rh8-g8 b2-b3 f7-f6 Rd6xa6 Kc8-b8 Ra6xf6 h7-h5 Rf6-b6+ Kb8-c8 Rb6-a6 Kc8-b8 Re7-f7 b5-b4 Ra6-b6+ Kb8-c8 Rb6xb4 Rg8-g5 Kb1-b2 Rg5-g2 Rb4-a4 Kc8-b8 f5-f6 Rg2-g8 Ra4-b4+ Kb8-c8 Rb4-b5 Rg8-h8 Rf7-a7 Rh8-h6

Note that in this line, after the moves 20. Ne7+ Bxe7 21. fxe7 Qh6+ 22. Kb1 Rde8 23. Qxe5 Qb6 24. Rhe1 Qc7 25. Rd6 we arrive at the following position:

click for larger view

Here Stockfish gives 25...Qxe7 which, to the human player, appears to drop a rook. But if instead 25...Rhg8 then 26.f6 ..

click for larger view

and black is now helpless against 27.Qd5 . The threat of course is 28. Qa8+ Qb8 29. Rc6+ Kd7 30. Rd1+. if black plays something like 26...Qb7 then the simple 27.Qc5+ will pin the Q after ..Qc7 Rc6, or Kb8 Rb6.

So it is clear after 20...Ne7+ black is quite lost.

Premium Chessgames Member
  PawnSac: < Walter Glattke: A) 20.-Qb6 21.Qa8+ Kc7 (Qb8 Rxd8+ Kxd8 Qxb8+) 22.Qxd8+ Kc6 23.Qd5+ and Qxe5 or 22.-Kb7 23.Qd5+ and Qxe5 >

Alternately, after 23.Qd5+ black might try ..Nc6 24. Qxf7+ Ka8 25. Qe8+ Nb8 (threatening ..Bh6+ winning the Q) 26. Kb1 Qxf6 27. Rd8 Qb6 28. f6 (to prevent ..Bg7) ..Be7 29. Qxh8 Bxd8 30. f7 Bf6 31. f8=Q Bxh8 32. Qxh8 but black is equally lost here.

Premium Chessgames Member
  agb2002: White has an extra pawn.

Black threatens dxc3 and dxe3.

I don't have time for this interesting puzzle but I thinl I'd play 15.Bxd4 based on 15... exd4 (15... Bxd5 16.Nxd5 Qd6 17.Bb6) 16.Qe4+ Kd8 17.Bxb7 Ra7 18.Qxd4+ and White emerges three pawns ahead.

May-13-17  Geronimo: Either I'm getting better - not likely - or that was a bit easier than other Saturdays' puzzles. The text move screamed out to be played and I found only two major lines to consider, both leading to major troubles for black. Given that white had tripled pawns on the f file by this point, this is a remarkable little game indeed. Thanks CG!
Premium Chessgames Member
  patzer2: Here's a look at the Satuday puzzle (15. ?) and game with the opening explorer (OE), Deep Fritz 15 and Stockfish 8:

<1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6> This is by far the most popular move in this opening line of the Sicilian. It had its debut with Kupchik vs Santasiere, 1926.

<6. Be3> This enters the Najdorf (B90) Sicilian as in Black's win in Rossolimo vs Fischer, 1966.

<7... e6> This is Black's second most popular move. More often played is 6...e5 as in White's win in Shirov vs N Delgado Ramirez, 2017 or Black's win in A Meijere vs G Mammadzada, 2017.

<7. g4> This early aggressive White move was first played without success, with Black winning in Lombardy vs Gligoric, 1961.

After this inauspicious beginning, it was nearly two decades later before White ventured 7. g4 again, with a White win in B Perenyi vs A Schneider, 1978. White's win a year later in Kasparov vs Polugaevsky, 1979 no doubt hepled popularize 7. g4.

Though 7. g4 is still frequently played, it's not the most popular.

The second most popular move and the computer preference is 7. Be2 as in the draw in D Swiercz vs S Shankland, 2017.

The most popular move is 7. f3, entering the B80 Sicilian Scheveningen, as in White's win in Robson vs Y Zherebukh, 2017.

<7...e5> This is the computer choice and a current popular try, but most often played is 7... h6 as in Black's win in Yifan Hou vs Van Wely, 2016.

<8. Nf5> Of 145 games in the OE in this line, 8. Nf5 has been White's only choice. Though it might have surprise value in skittles or blitz, the alternative 8. Nb3!? Nxg4 9. Bd2 Nf6 10. Rg1 Be6 to = leaves Black a pawn up with a solid position.

<8... g6 9. g5 gxf5 10. exf5 d5> The moves 8...g6 9. g5 gxf5 10. exf5 d5 are the most popular and theoretical best moves.

<11. gxf6> This is the second most popular try.

Slightly more popular and the computer preference is 11. Qf3 as in Black's win in N Matinian vs Navara, 2013.

<11... d4 12. Bc4 Qc7 13. Qd3 b5> Though it's not a bad move, this is the only game with 13...b5 in the OE.

More often played is 13...dxe3 as in the draw in Lu Shanglei vs Yinglun Xu, 2016.

<14. Bd5 Bb7?> This is Black's decisive mistake.

Instead, Black can fight on with drawing chances after 14...Nc6 15. Bxd4 exd4 16. Qe4+ Kd7 17. 0-0-0 Bb7 18. Bxf7 Kc8 19. Be6+ Kb8 20. Nd5 Qe5 (+0.45 @ 31 depth, Stockfish 8.)

<15. Bxd4!> (+2.24 @ 30 depth, Stockfish 8) With this strong move, which solves the Saturday May 13, 2017 puzzle, White is winning.

<15...Nd7> According to the computers, this move puts up the most resistance.

<16. O-O-O Bxd5?> By allowing17. Nxd5 (+7.74 @ 31 depth, Stockfish 8,) this makes it easy for White.

Putting up more resistance is 16... O-O-O, but White is still winning after 17. Be3 Bb4 18. Bxb7+ Qxb7 19. Nd5 Nc5 20. Bxc5 Bxc5 21. Rhe1 Rhe8 22. f4 e4 23. Rxe4 (+2.64 @ 33 depth, Stockfish 8.)

<17. Nxd5> (+7.74 @ 31 depth, Stockfish 8) White's advantage is now clearly decisive.

<17...Qd6 18. Bxe5 Nxe5 19. Qe4 O-O-O 20. Nb6+ 1-0>

Black resigns in lieu of 20...Qxb6 21. Qa8+ Kc7 (21... Qb8 22. Rxd8+ ) 22. Qxd8+ Kb7 23. Qd5+ Qc6 24. Qxe5 (+5.54 @ 32 depth, Stockfish 8.)

Premium Chessgames Member
  patzer2: If 15... exd4, White wins with the double attack 16. Qe4+ Kd7 17. Bxb7 (diagram below)

click for larger view

when play might continue 17...dxc3? 18. O-O-O+ Bd6 19. Qe7# (diagram below)

click for larger view

May-13-17  stst: Some variations, but not the type calling immediate threats. Try (A)
15.Bxd4 exd4
16.Qe4+ Be7
17.Bxb7 Ra7
18.Nd5 QxB
19.fxe7 and Black in lurch.

15.Nxb5 axN
16.Qxb5+ Bc6
17.BxB NxB.... not much for either side, though Black looks better.

15.Bxf7+ QxB
16.Rg1, not good for White, waste a move, attack slowed.

15.Bxd4 Bxd5
16.Nxd5 Qb7
17.Bxf5 Nd7
18.Nc6+ forks, not good for Black, but most probably it won't get into this awkward state by other routes.

May-13-17  RandomVisitor: After 13.Qd3

click for larger view

Komodo-10.1-64bit: <6 1/2 hours computer time, Selectivity 70>

-0.18/38 13...dxe3 14.fxe3 b5 15.Bd5 Bb7 16.0-0-0 Nc6 17.Be6 Nb4 18.Qd7+ Qxd7 19.Bxd7+ Kd8 20.Bc6+ Kc8 21.Bxb7+ Kxb7 22.Rd7+ Kc6 23.Rhd1 Bc5 24.Ne4 Kb6 25.Nxc5 Kxc5 26.a3 Nc6 27.Rxf7 Raf8 28.b4+ Kb6 29.Rxf8 Rxf8 30.Rd6 Kc7 31.Re6 Kd7 32.Kb2 Re8 33.f7 Rf8 34.Rf6 e4 35.Kb3 Ne5 36.Rxa6 Ng4 37.Rb6 Nxe3 38.Rxb5 Rxf7 39.Re5 Nxf5 40.Rxe4 Nd6 41.Rd4 Kc6

<+0.58/38 13...b5 14.Bd5 Nc6> 15.Be4 dxc3 16.0-0-0 Nb4 17.Qe2 Qa5 18.a3 cxb2+ 19.Kxb2 Nd5 20.Qd3 Bb7 21.Bxd5 Bxd5 22.Qxd5 Bxa3+ 23.Kb1 Qb4+ 24.Qb3 Qxb3+ 25.cxb3 Rd8 26.Kc2 Bb4 27.Rxd8+ Kxd8 28.Ra1 a5 29.Bd2 Bxd2 30.Kxd2 Kc7 31.Rxa5 Kb6 32.Ra2 Rd8+ 33.Ke3 Rd4 34.Ra8 Rf4 35.Rf8 Rxf5 36.Rxf7 Rf4 37.Rxh7 Rxf6 38.Rh4 Kc5 39.Re4 Kd5 40.f4 exf4+ 41.Rxf4 Re6+ 42.Kd3 Rg6 43.Rf5+ Kc6 44.h4 Rg3+

Premium Chessgames Member
  patzer2: <RV> Thanks for the deeper look at 13...dxe3 = and 14...Nc6 as improvements for Black.
May-14-17  RandomVisitor: <patzer2><Thanks for the deeper look>Just checking to see if there is more here... seems like our assessment is unchanged on a deeper look...

After 13.Qd3, final look

click for larger view

Komodo-10.1-64bit: <20 1/2 hours computer time, Selectivity 70>

-0.08/41 13...dxe3 14.fxe3 b5 15.Bd5 Nc6 16.0-0-0 Bb7 17.Be6 Nb4 18.Qd7+ Qxd7 19.Bxd7+ Kd8 20.Bc6+ Kc7 21.Bxb7 Kxb7 22.Rd7+ Kc6 23.Rhd1 Bc5 24.Ne4 Kb6 25.c3 Bxe3+ 26.Kb1 Nc6 27.Rxf7 Rad8 28.Rdd7 Rxd7 29.Rxd7 Nd8 30.h4 Rf8 31.Kc2 Bf4 32.Rd6+ Nc6 33.Rd7 h5 34.f7 Nd8 35.Rd6+ Kc7 36.Rxa6 Rxf7 37.f6 Rd7 38.a4 bxa4 39.Rxa4 Nf7 40.Ra6 Nh6 41.b3 Be3 42.Re6 Nf7 43.Re7

<+0.46/41 13...b5 14.Bd5 Nc6> 15.Be4 dxe3 16.0-0-0 Bd7 17.Nd5 Qa7 18.Nb6 e2 19.Qxd7+ Qxd7 20.Rxd7 Rb8 21.Rc7 Rxb6 22.Rxc6 Bh6+ 23.Kb1 Rxc6 24.Bxc6+ Kd8 25.Re1 Bf4 26.c4 bxc4 27.Kc2 Bxh2 28.Bd5 Bf4 29.Bxc4 h5 30.Kd3 h4 31.Kxe2 Rh5 32.Rh1 Rxf5 33.Rxh4 Rxf6 34.Rh8+ Kc7 35.Rh7 Rd6 36.Rxf7+ Kc6 37.Bd3 Rd4 38.Rf6+ Kc7 39.Rxa6 e4 40.Bb1 Rd2+ 41.Ke1 e3 42.fxe3 Bxe3 43.b3

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