Jake Kleiman vs Ray Robson (2006)

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Jake Kleiman vs Ray Robson
National Chess Congress (2006), Philadelphia, PA USA, rd 4, Nov-??
Sicilian Defense: Scheveningen Variation. Keres Attack (B81) · 0-1

White to move.

ANALYSIS [x]

0-1

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1

FEN COPIED

explore this opening	find similar games	2 more J Kleiman/Robson games
sac: 41...Ra8	PGN: download \| view \| print	Help: general \| java-troubleshooting

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Apr-11-24		King.Arthur.Brazil: It seems crazy but is plausible: 42...Rxa7+ 43. Qxa7 Qxa7+ 44. Rxa7 g3 45. Kb2 g2 46. Ra1 f4 47. Rg1 f3 48. Kc3 f2...

Apr-11-24		mel gibson: I saw that but I wasn't sure if it would work. Stockfish 16 says: 42. .. Qxa7+ (42. .. Qxa7+ (1. ... Qxa7+ 2.Qxa7 Rxa7+ 3.Rxa7 g3 4.Re7 g2 5.Re1 f4 6.Rg1 f3 7.Ka3 Kf7 8.c3 Kg7 9.Ka2 Kf6 10.Ka3 f2 11.Rxg2 f1Q 12.Rc2 g5 13.Kb4 Qb5+ 14.Ka3 Qc5+ 15.b4 Qc4 16.Rf2+ Kg7 17.Kb2 Qe4 18.b5 cxb5 19.Kb3 Qb1+ 20.Rb2 Qd1+ 21.Kb4 Qa4+ 22.Kc5 Qa3+ 23.Rb4 Qxc3+ 24.Kxb5) +35.84/42 564) score for Black +35.84 depth 42.

Apr-11-24		takebackok: Hello, passed pawns must be pushed. Missed Kg2 but saving the g6 pawn is the key to winning fast.

Apr-11-24		An Englishman: Good Evening: Black's last move becomes crucial when you realize that after 48...f2; 49.Rxg2,f1/Q; 50.Rxg6+,Kf7; 51.Rxc6 White might succeed in creating a fortress.

Apr-11-24		Teyss: I found it mainly because there's not much else to play. In the end I also missed the finesse 48....Kf7 and pushed f2 like a bully. Surely OTB my sense of conservation would have made me consider Kf7. Right. Note 48....f2 still wins even if it's slower. Not sure White can build a fortress because Black has a Pawn remaining after 48...f2 49.Rxg2 f1=Q 50.Rxg6+ Kf7 51.Rxc6: click for larger view Black can push the Pawn at some stage to undermine the fortress' foundation on c2. If the BP weren't here, yes it should be a fortress TBC by a construction expert.

Apr-11-24		chrisowen: Ink q bah its mew its put cj dual Rxa7+ aec its occult its huh its adagio its nag its a cuff muff Rxa7+ its off

Apr-11-24		TheaN: Once you discard playing 42....g3 right away (43.Qe6 gives Black a lot of headaches though it still wins (!) after 43....Kh8 44.Qxg6 Rxa7+ -+), the text kind of follows. <Teyss: In the end I also missed the finesse 48....Kf7 and pushed f2 like a bully. Surely OTB my sense of conservation would have made me consider Kf7. Right.> relatable. With these mid-game simplifications it's always the question as to whether a move like 48....Kf7 is really necessary. We're six moves into the combination then, and the position drastically changed. The key is seeing g2-f4-f3 comes in time and Black will go up queen vs rook down the line. Optimizations come once the position is actually on the board.

Apr-11-24		Mayankk: 42 ... Rxa7+ 43 Qxa7 Qxa7 44 Rxa7 g3 is not hard to see. Black's 3 passed pawns really stand out in the position and it is an old maxim that 2 pawns on the 6th rank is worth a Rook. So once we get g3 and f3 in, we can't be worse. The real star move however happened just before. 41 ... Ra8 gave up a Bishop, with the plan to sacrifice another Rook just to get the pawns rolling. Given that the a2 pawn was not queening immediately, since Rxa1 comes with a check, it needed considerable foresight to plan the entire manoeuvre.

Apr-11-24		TheaN: <Mayankk: The real star move however happened just before. 41 ... Ra8 gave up a Bishop, with the plan to sacrifice another Rook just to get the pawns rolling.> Interestingly, this is where computers and humans differ greatly: SF gives the incredibly bold 41....g3?! and -12. Of course White was intending 42.Rxf7 anyway, and now there is no 42....Rxa7+. But the fish just plays 42....Rxf7! 43.a8Q+ Kg7: click for larger view and White has no practical way to stop g2, after which g1 is unavoidable. 44.Qxf7+ Kxf7 45.Qxc6 f4 -+ and the Black king can move up the board and allow both pawns to promote eventually. In practice 41....Ra8! is much better, and I wouldn't be surprised if that's a quicker mate if analyzed out in the end. They both win, but a human would never play 41....g3 allowing 42.Rxf7.

Apr-11-24		chrisowen: Jake cool calamity x

Apr-11-24		Refused: 42...Qxa7+! 43.Qxa7 Rxa7+ 44.Rxa7 g3 45.Kb2 g3 46.Ra1 f4 47.Rg1 f3 -+ was the position you had to foresee. Fairly straight forward and not that difficult imo

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