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Ray Robson vs Rao Prasanna
Wch U10 (2004), Heraklio, rd 6, Nov-04
Sicilian Defense: Dragon Variation. Yugoslav Attack (B78)  ·  1-0
ANALYSIS [x]

FEN COPIED

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sac: 25.Rxg8+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Nov-25-14  TheaN: Back from long gone (again), I'm looking forward at picking up the PotD more often.

This Tuesday starter was not necessarily difficult as the position simply screams for mate. White's attack breaks through by means of the thorning e-pawn: <25.e6 Bxh8 (else Qf7#) 26.Rxh8 with 27.Qf7# 1-0>. I hadn't actually envisioned Rxg8+ until I saw the solution.

The discussion whether e6 or Rxg8 is <better> is pointless. The game ends at move 27 and the mating pattern is the same for both move orders. The <reason> why one chooses one over the other is yet of great value.

I dismissed Rxg8+ at first glance because white sacrifices a very active rook for the piece in its pin. After 25.Rxg8 Kxg8 26.e6 white has a piece less in offense and only taken out a weak defender. All the threats on g8 are non-existent. If black had a way of protecting f7 this move order would not win immediately, whereas the other does.

As a thumb rule in attacks, bringing in more pieces with threats is usually more effective than boldly sacrificing pieces in the enemy position. If the latter doesn't lead to the former or mate, it is usually not good. 25.e6 is a typical piece engaging move: without compromising the attacking position white brings in the e-pawn, threatens mate on f7 and shuts off the kingside for black defenders. After 25....Bxh8 26.Rxh8, due to the h8 reload, White brought in a new offender (e6) and removed a black defender (Bg7).

I'll stop brabbling now. It's mate in three, 'nough said.

Nov-25-14  njdanie: Black's gotta play h5 before white can otherwise the Dragon gets crushed...
Nov-25-14
Premium Chessgames Member
  whiteshark: <Bobby Spassky: 25. e6! is good enough> 4 me, 2!
Nov-25-14  Amarande: 25 e6. Nail down the coffin. :)
Nov-25-14  vasja: The third possibility is 25. Qh7 and B on g8 falls if K makes a run then 25...Kf7 26. Qxg8+ Kg6 27 R(any)h6#
Nov-25-14
Premium Chessgames Member
  Bubo bubo: This is a nice one: Instead of spectacular sacs, a little pawn push does the trick: 25.e6!, and Black can only postpone the mate on f7 by one move: 25...Bxh8 26.Rxh8 and 27.Qf7#
Nov-25-14
Premium Chessgames Member
  LucB: <offramp:>

<How would you evaluate black's exchange sacrifice in this game?>

:D

I'm surprised no one commented on this yet! Ha ha, good one!

You forgot to include the link!

Nov-25-14
Premium Chessgames Member
  whiteshark:

Here you are: N Resika vs E Kahn, 2001 with <13... ♖x♘c3>.

Nov-25-14  dfcx: 25.e6 Bxh8
26.Rxh8 and mate next
Nov-25-14
Premium Chessgames Member
  kevin86: the quiet pawn move seals black's fate.

My move was 25 ♕h7 is that a good solution?

Nov-25-14  wych: For me, 25.e6 is significantly more aesthetically pleasing than the alternative 25.Rxg8+.
Nov-25-14  starry2013: I won in no doubt a much more drawn out way

1.exf6 Bxh8 2.Rxh8 Nxf6 3.Bxg5 e5 4.Bh6+ Ke7 5.Qg7+ Ke6 6.Qg6 Ke7 7.Bg5 Kf8 8.Bxf6 Qxf6 9.Qxf6+ Ke8 10.Rxg8+ Kd7 11.Qf5+ Kc7 12.Rxc8+ Kb6 13.Rxc4 a5

or similar

1. exf6 2.Bxh8 Rxh8 3.Nxf6 Bxg5 4.e5 Bxf6 5.Qxf6 Qxf6+ 6.Ke8 Rxg8+ 7.Kd7 Rg7+ 8.Kc6 Na5+ 9.Kc5 Nxb7+ 10.Kd4 Nxd6 11.Rxc3 bxc3+ 12.Rxc3 Rxa7 13.Kd5 Ne4 14.Rxc2+ Kxc2

Nov-25-14  Checker2: I'm in good company in the e6 camp, although I first looked at the forcing check. Not only is e6 more aestetically pleasing, but with the choice of LSB or DSB bishop for the exchange sac, surely e6 nets the more interesting prisoner. At odds are the cleric's occupation and penchant for hanging out in dark places. 25.Qh7? Bxh8 and white has no time for e6.
Nov-25-14
Premium Chessgames Member
  chrisowen: Won key in e6 light zaps an xray virtual g8;

also good rave vanquish rook fears at both alive e6 win am g8 too gas flubb thy enough i g8 a pecks e6 sprung forsooth deinty he since paid up da price e6 or piece nez have wiggy rates encircle for the kill g8 in see the dice snatch a jostle hey pacman i da jinky e6 run wobbles g8 both good and nominal in might over sensed black in the back foot after glide an e8 horse queen plus shore up d8 steadily going back to the hive cleaners and maybe e6 bishop at fault instead create a luft by pawns e6 milly around eline shire for a king on the run moot victor pebble pawn e5 dash at jab win the game ar sentry h8 might sir have ogles;

son slide e6 have for first lane clink dipoff aim dead try dids up three piece mate a flight in cad guffaw in effect back at beck and call am good game at infer tile ground good a do aim cringe and clod hopper f7 a strike dutiful gotcha joculay sentry back a flick line every good chance at bet queen alive g6 arrive f7 to the party aim hope churlish behaviour and give act cops try clam up at heads in wracking his brain how to dispose creative clutching heal manage three free crevice ogle price in prayed it now in a foot do the math a find giving three really good garter dip to gather bind in bad call i bishop padre e6 dutifuls was tickle off at e6 luft for king eline free pluck a rod bin shin evermore a culpa i ho ho g6 surround queen am bind f7 in act fluffs h7+ entry square furious alive g6 hooker sure upper room glean gather bond aim fanciful crum at two rook hod carriers eline effect ash engage boot around to have hop affect hood affable h8 oh affix a cut i

curry favour ave a live flinch aorta in h8
a boon as other bind a flush e6 over tickle

g8 as band i harangue bishop crab back he a length i g8 bottoms g8 up ply in light 25.Rxg8+ a boon high am noon style a pool cab lessons wire at bus clinh clucky it ok in ogle at rooms e6 an soon a vroom g6 away in f7 mate axiom over we have in f7 officer

ghosting a clean g6 win ghostship an garrelous to garner share of the prize pieces gathered it eddy a wave in gambling get-away gobbling rook aim calm gumballs ghoulash to chow in grieving for black put to the cleaners word on the street g8 at enact also press e6 both for a win gumption he goofs e6 as he flog eh guffaw in gaffer tile ground f7 ar get rooks at both in combo enough a g8 feel change hoof in wide berth am take down shagpile knight batch e6 cook it edict in ever sabbatical two hogs linch bags to have and borough bash to hallway big sand for lunch g6 a queens f7 a vow in e6 beats 25.e6 a oomph join the club at jostle

around jobsworth seals at black king ash ground an oodles of spaced room for jod hopper stike a john doe g8 under e6 the hammer more fun jovial in jog on e6 at jockey for a noose e7 at jello mould joie de vivre g8 i ment too glandular joss sticks f7 in sense josh around jot down saggy g6 an estimater rain a g6 queen jowels again joy to the world enough burning effigy rates ecumen effort egging on e8 either bind an d8 backs e6 bad step padre instead awesome pawn in ahead e6 create luft an eminate enters

errand boy essays the notion f7 eyeball g8 as king fiefdom in ash tour queen to hup effective to efface off what f8 at no beef f7 left un protected it edict in eline dank and dusty e6 a fade an g8 iffy ever feeble a bishop a bind e6 around three really good pieces f7 at mates 25...Bxh8 26.Rxh8 Ng 27.Qf7+ do barrge mode bag a nest elephants offer up h8 in no affable mission have ogle at g7 and g8 fanes abreast a slim man popular sentry f7 a key e6 reenter g8 a slide g6 over nip in the bud ja doing the deal in f7 said ogle a skim palm cone crest e6 hot hobo no again dote do deft touch e6 bath flute reed it fine a g8 also if in vow doubt hot foot mind rag a wash in did could e6 win effectively yes believe g8 does too.

Nov-25-14  LIzzard: Fell firmly into the e6 group - liked advancing the pawn into a space left so open for it with the bishop pinned.

<morfishine> - Certainly agree with your observations as well...

Nov-25-14  GoldenKnight: How about 25.Qh7?
Nov-25-14  WJW147: The joys of youth. 25.e6 was my first choice. The study of Chess has many coaches.
Nov-25-14
Premium Chessgames Member
  offramp: <LucB>, it seems only you and I did the survey!
Nov-25-14  goodevans: <GoldenKnight> (and others) <How about 25.Qh7?>

25.Qh7 is met with 25...Bxa8 and black survives a while longer.

Nov-25-14
Premium Chessgames Member
  FSR: I played 25.Rxg8+, but 25.e6 Bxh8 26.Rxh8, suggested by many, is equally good. White threatens three mates in one (27.Qf7, 27.Rxg8, and 27.Qxg8), each of which is unstoppable.
Nov-25-14
Premium Chessgames Member
  Zhbugnoimt: I first found 25.Rxg8+, then I saw 25.e6. Do I get double credit?
Nov-25-14  Checker2: Only two ways to mate. Again, Qh7 loses the exchange and the e pawn. There Fritz gives black as winning (-2) and white's best line is to reroute the rook to d3 to defend against what else? The exchange sac on f3!

No earlier opportunities as far as Fritz could see to (mere) depth 18 for <Offramp's> exchange sac, which I had to check out, after <Whiteshark's> spectacular game link. Rxf3 did appear as a move often in the side lines.

Nov-25-14
Premium Chessgames Member
  Castleinthesky: I got the e6 first version.
Nov-25-14  Pedro Fernandez: <<GoldenKnight>: How about 25.Qh7?> I did fall in the same "trap" my dear, lol! (mentally of course).
Nov-25-14
Premium Chessgames Member
  patzer2: Amazing play by then 9-year-old Ray Robson. Following 12...Rfc8?! (12...h5 = to ) 13. g4! , White's in complete control with an attack worthy of a seasoned GM.

After 18. e5! Ne8?! (18...Nxg4 19. fxg4 to ) 20. Qh2! , Black's busted.

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