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Roman Zinovievich Altshuler vs Kenneth Charles Messere
5th CC World Ch Final (1965) (correspondence), corr ICCF
Spanish Game: Open Variations (C80)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
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Apr-23-15  patzer2: For my Thursday puzzle attempt, got as far as the end of the game and the follow-up 25...Kf6 26. Qf4+ Qf5 (diagram below)


click for larger view

However, I missed the continuation of the mating attack with 27. Bg5+! Kg7 28. Qc7+ Qf7 29. Qe5+! Kf8 30. Bh6+ Rg7 31. Qb8+ Qe8 32. Qxe8#.

The decisive error was <23...Qd8??> Instead, Black should have tried 23...Qb8 (+1.05 @ 25 depth, Deep Fritz 14) with drawing chances.

For level chances for Black, Fritz indicates 13...0-0-0 = (-0.12 @23 depth, deep Fritz 14) improves over <13...Nxb3>.

Apr-23-15
Premium Chessgames Member
  agb2002: White has a pawn for the bishop.

Black threatens 24... Bxf2+ 25.Kxf2 Qf6+ 26.Qxf6+ Kxf6 27.Bd2 Rf8 28.Bc3+ Kg5+ 29.Kg3 Rhg7 with a momentarily unconfortable position.

The bishop on d5 stops Qe6#. This suggests 24.Rxd5:

A) 24... Qxd5 25.Qc7+ Kf6 (25... Be7 26.Qxe7#) 26.Qf4+ Qf5 27.Bg5+

A.1) 27... Kf7 28.Qc7+ Kf8 29.Bh6+ Rg7 30.Qxg7#.

A.2) 27... Kg7 28.Qc7+ Qf7 29.Qe5+ (29.Bh6+ Kxh6 30.Qxf7 Rf8 followed by 31... Bxf2+) 29... Kf8 (29... Qf6 30.Qxf6#) 30.Bh6+ Rg7 (30... Qg7 31.Qe8#) 31.Qb8+ Qe8 32.Qxe8#.

B) 24... Re8 25.Qg7#.

C) 24... Bxf2+ 25.Kxf2 Qf6+ 26.Qxf6+ Kxf6 27.Rxc5 with a won ending even if Black manages to trap the bishop.

Apr-23-15  bcokugras: 25... Kf6 26 h4 !
Apr-23-15  stacase: 24.Rxd5 works when you realize Black must follow with 24...Qxd5 not 24...Pxd5 because that leads to 25.Qe6#. But it took me a while.

Would I have seen it over the board? Hmmmmm maybe.

Apr-23-15
Premium Chessgames Member
  TheFocus: Too easy. Interesting though.
Apr-23-15  diagonalley: 24.RxB seemed the only candidate move, but the full continuation is difficult to calculate... necessary though, because white at move 24 is already a piece down. hard, even for a thursday.
Apr-23-15
Premium Chessgames Member
  The Long Diagonal: For some reason, when I saw this position I immediately thought: hmm, that looks like a correspondence game. Maybe it was the unusual material imbalance but somehow it just didn't seem quite otb.

A rather easy Thursday, though.

Apr-23-15
Premium Chessgames Member
  The Long Diagonal: Except that it was not easy! I was hallucinating and thought that 24.Rxd5 Qxd5 25.Qe7?? is mate. And even after I checked and looked at the final position, I couldn't figure out the win. I did think of 26.Qf4+ Qf5 27.Bg5+ Kf7 but 28.Qc7+ didn't occur to me at all - probably my brain was unable to consider that the queen might go back to the square she just came from.
Apr-23-15
Premium Chessgames Member
  Honza Cervenka: <Mendrys: Given that this was a correspondence game it's surprising that Messere didn't see 23...Qb8 instead of the text move.>

Well, it is not so surprising at all. In precomputor age to miss a tactical shot, especially not a trivial one, was no rarity. On the other hand I would like to know why white dismissed obvious and crushing 21.Bxc5 Qb8 22.Qg5 Qd8 23.Qf4+ Qf6 24.Qc7+ .

Apr-23-15  JimNorCal: agb's line C with Bf2+ muddied the waters sufficiently that I couldn't feel confidence in the outcome.
Apr-23-15  mistreaver: Thursday. White to play. Medium. 24.?
White is a piece down so he has to give mate soon, before black unravels his rooks. First i wanted to do
24 Bg5 and give mate on f6 after queen moves.
And now looking at it i don't see what black can do:
24 ... Bxf2+
25 Kxf2 Qb6+
26 Kf1
Or 24 ... Re8
25 Qf4+ Kg8
26 Bxd8 Rxd8
are both winning for white.
Time to check and see.
----------------
Wow i am blind, i missed
24... Qd6.
I considered 24 Rxd5 since this is exchange sacrifice week, but didn't see the continuation after Qxd5. So bad.
Apr-23-15  morfishine: White has a potential seal-off of the Black King with his rooks on the cental files and his DSB on <h6> controlling <g7>

<24.Rxd5> removes the defender of <e6>; Black has two replies

(1) <24...cxd5>??? 25.Qe6#

(2) 24...Qxd5 25.Qc7+ Kf6 26.Qf4+ Qf5 and this is where I got stuck; like <patzer2> I was unable to find 27.Bg5+

I forgot to count the pieces and only noticed at the end that White was a piece down. Sloppy work for me today :(

*****

Apr-23-15  CHESSTTCAMPS: White is down a pawn for a bishop, but the black king is badly exposed, the white pieces are well-organized, and the defensively placed black rooks have little scope and are actually in the way. White is playing for mate, but not just anything will work, e.g 24.Bg5? is well-defended by Qd6! Instead, white has to do a little maneuvering to set up Qf4+ with maximum effect.

24.Rxd5!!

is the ticket, a candidate that has to be considered because it is forcing, eliminates a light-squared defender, and diverts the black queen from dark-square defense.

24... Qxd5 (cxd5 25.Qe6#) 25.Qc7+! (the finesse behind the combination ) Kf6 26.Qf4+ Qf5 27.Bg5+! Kg7 28.Qc7+ Qf7 (Kf8 Bh6+ forces mate) 29.Qe5+ Kf8 (Qf6 30.Qxf6#) 30.Bh6+ Rg7 (Qg7 31.Qe8#) 31.Qb8+ Qe8 32.Qxe8#

Time for review...

Apr-23-15  eblunt: I got up to 26 Qf4+ but missed the continuation 27 Bg5+.

I like the way the Queen shuttle from c7 to f4 and back serves to get the Bishop from h6 to g5 with tempo, so that f6 escape is blocked off. Very subtle.

Apr-23-15
Premium Chessgames Member
  Penguincw: I got 24.Rxd5 Rxd5 and even the reason behind it (to remove the defender of e6), but didn't see 25.Qc7+ (I actually saw 25.Qe7+??).
Apr-23-15  TheaN: Thursday 23 April 2015 <24.?>

White has sacced his light squared bishop to obtain open files and an exposed enemy king. In addition black's h8-rook is completely boxed in, so effectively white is playing an exchange up. Let that be exactly what white is going to sacrifice even more to win this game.

<24.Rxd5!> the bishop on d5 was protecting e6. By taking out the piece of black white is missing, he gains control over the light squares. <24....Qxd5 (cxd5 25.Qe6#)> anything else fails pretty badly. <25.Qc7+!> white has to repostion the black king before taking the f-file. <25....Kf6 (Be7 26.Qxe7#; Qd7 26.Qxd7+ Kf6 27.Qe6#) 26.Qf4+ Qf5 27.Bg5+!> the point of Qc7-f4+.

A) <27....Kf7?> puts the black queen out of play <28.Qc7+ Kf8 (Be7 29.Qxe7#; Qd7 29.Qxd7+ Kf8 30.Re8#) 29.Bh6+ Rg7 30.Qxg7# 1-0>.

B) <27....Kg7 28.Qc7+ Qf7> other interposings and 28....Kf8 29.Bh6+ are similar to A. <29.Bf6+!!> the point of the position; white retains his dark squared bishop and will win black's queen and later the h8-rook.

B1) <29....Kxf6 30.Qe5# 1-0>

B2) <29....Kf8 30.Qd8+ Qe8 31.Qxe8# 1-0>

B3) <29....Kh6 30.Qxf7 > black can't do much against Bxh8, if he attempts <30....Rf8 31.Qg7+ Kh5 32.Re5+ Kg4 (g5 33.Qxg5#) 33.h3+ Kf4 34.Qh6+ g5 35.Qxg5# 1-0> black is mated straight away.

Apr-23-15  TheaN: Kind of surprised I missed 29.Qe5+: I went for the slightly slower mate and would have probably captured on h8 if black didn't attempt 30....Rf8. Didn't really look at Re4 or a mate. Rest assured, Bf6+ wins in 7 instead of 4.

These are the interesting optimilizations in my line B and B3:

<28....Qf7 29.Qe5+! #4 vs 29.Bf6+ #7>

<30....Rf8 31.Re4! #3 vs 31.Qg7+ #4>

<33....Kf4 34.Bg5# vs 34.Qh6+ #2>

Apr-23-15  patzer2: Correction: Instead of <13...Nxb3 14. Nxb3 >, 13...0-0 = gives Black a level game.
Apr-23-15
Premium Chessgames Member
  Longview: I went a different way with this one. I thought that 24. Rxd5 would be answered with cxd5 not noticing that 25. Qe6# was the reply to that. So, I thought about a rook lift, noticing that the d5 Bishop was pinned to the queen, I wanted 24. Re4 thinking Black would be force to swap queen/bishop for 2 rooks but realized that Kf1 was forced and the bishop escapes. White still has advantage but not mate any time soon.


click for larger view

So much for my mental moving for the day! I still struggle with the second and third moves on the candidate paths.

Apr-23-15
Premium Chessgames Member
  kevin86: it turned out that black's knight was the keystone- when it was removed, the game immediately collapsed!
Apr-23-15  M.Hassan: White has a pawn for a Bishop and is supposed to play move 24.? Bishop on h6 is beautifully placed and the exposed position of black King invites Rxd5

24.Rxd5

<if...cxd5 25.Qd6#>

24..........Qxd5
25.Qc7+ Kf6(forced)
26.Qf4+ took me long time to see that move.!!
26...........Qf5
27.Bg5+! neither the Queen nor the King can take
27...........Kf7
28.Qc7+ Kf8
29.Bh6+ Rg7
30.Qxg7#
Amazing!

Apr-23-15
Premium Chessgames Member
  chrisowen: Credible sacced rook drive coated deuce balls b8 at serves i dew catch am dutifuls an deciders rook d5 dancehall derision select rook as wheel ave deframed diligent rambles decrepid queen at delineate deployed doghouse blues b6 win doorways knob d5 dumbbell doorlatch ave dug-outs a vows base d5 diffuse hogged the lime light had flog hud fog hide d8 gaff rook d5 good enough difficulty vet woe f7 at king's flap engage flighter bus cab ok vets bade hob bottled up balance brave beneath the wave d5 bog had bane d5 stir dinks at fry woken the beast b6 since at debonair decode cedar f6 at king's flouter would deep cup caged i fast ace b8 jockeyed queen slacked off coned depricate band schemed dove d5 catch covered b8 good axed cave down d5 rogers that hoopla vet back a rat painted b8 ave lady vow ash over tin,

batch im like chimney d8 serve flight have oomph act each amp dead beset am bet i delve deep enter iff i drive lane ebber change at bad call clink i do deem aim flow at eg infer tile ground f7 at bet to ban an better glide as did dead d8 and dutiful at beats amps clear efface off to effect tries eggers lane d5 heads gifted vows e5 have f7 on,

the ropes nope not until mint select f7 at target ova flowers d8 trapped deciders rook d5 take down drive spark an done deal d5 hive 24.Rxd5 if fine fund i got five bucks b6 angle b8 at draw maybe fib on accidental attack f7 arrive figments arns delve managed drive at deeps the cause live dours h6 stand still heaven c7 above drain doors delved deep dabber c7 dasher bet dancer carafes dense pour on scorns f7 king's at hunt down face pin flap engaged d8 and digger true delight dipoff dugout feed d5 definate dip hoot flared ever defeats d8 victory an success denotes d8 docile would have been arrives b8 and dunder head d5 duffer douche bag rook dipper a stike down ducker dealer dimmer light denter an line dapper gent d5 drousy came tree of life pure as the driven snow d5 arms dunces and divots aim at h6 dowry haggle docked f7 dourly rates seeded dessicated queen side ever d5 served either bind it ie at hive mind 24...Qxd5 25.Qc7+ mate at seven match stick join the club at f7 an king's at face pin flap engage flowered clean job club d5 jobs worth f6 on the run inter flight ash f4 and wins at jog on an oomph have an oodles of room for light harvest happy h6 days cut off g7 angled jocular sentry by,

jove at f7 cuppa joe to warm the cockles and be f6 inert flight cant escape f7 at king's am faces forlorn pin heads h6 over e5 josh around c7 joust h6 at rack maze creeps corner c7 mack zoroaster gone d5 hives palms i remember ban an b6 angle to clinch i bullseyed queen padre pads an fades h6 covers c7 route banded about f6 i shaped arm feed gash i ply f4 and wins ball covered d8 spot of jip reckon bad fate good d5 25s the number c7 another summer schooner decides d8 referral casts h6 an e5 it is ok ave ogle casts hurry along h6 eaves drop so pap queens ave crescent moon d5 eve flurry it dint exchange off re you haven came d5 light veer e5 vet white cosy and rosy d5 rivenja ship gares h6 i red off an missed i b8 stash h6 floppy f7 at king's am flap engage wheel b6 arrow maidens beyond mooted point f6 at bsc f4 pad fee tonnage vow ave at h6 i mass heaves around f7 la ship stayer c7 wins.

Apr-23-15  stst: Missed it. I originally thought Bg5 will harass the Q, but met with the very tough defense Qd6.

The exact position puts a very nice finesse with 24.RxB, if QxR then 25.Qc7+ makes the defense Be7 worthless

and if 24......PxR, the nice positional advantage Qe6 will mate.

Good and strange that both the B and R@e1 don't need to move at all.

A "Medium" pod, should not be too complicated.

Apr-23-15  mel gibson: I didn't see this one - but I didn't spend more than 20 seconds.

DR4 64 bit - found the correct solution in only 1 second.

Apr-23-15  Jambow: Ok saw that at blitz speed so either I'm getting better, the puzzles are easier or more likely it was just my day for a change...
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