|
< Earlier Kibitzing · PAGE 2 OF 2 ·
Later Kibitzing> |
| Jul-11-15 | | diagonalley: "very difficult" (?)... more "insane" for my money... black's army is strewn across the board and yet... (almost unbelievably) there appears to be a winning line(?) ... utterly beyond my scope, but i wonder what an engine would make of it... |
|
| Jul-11-15 | | ndg2: What about first saccing the rook on e2 and then playing Re8? Wouldn't this do the job as well? |
|
| Jul-11-15 | | Steve.Patzer: I also was considering 37....Rxe2 |
|
| Jul-11-15 | | mel gibson: DR4 64 bit gives the same winning move:
37... Rf to e8 . at depth 21. |
|
| Jul-11-15 | | morfishine: I echo <The Last Straw> as I couldn't see the forest for the forest! I persevered though and tried to find some theme to latch onto, or some hole in White's position and ended up with the same idea as <ndg2> first playing <37...Rxe2> after 38.Bxe2 Re8 White seems to have a hard time defending both his WSB and <e1>
click for larger viewHowever, White has 39.Bd1 and he saves the piece while protecting his back rank ***** |
|
| Jul-11-15 | | wooden nickel: Like already posted there's the backrank weakness, so how about 37... Rxe2
<it's not our rook, so what do we got to lose? 8-)> 37... Rxe2 38.Bxe2 Re8 39.Rd2 g4!
click for larger viewAnother weakness is the square b2, if only the queen could get there! 37... Rxex 38.Bxe2 Re8, if 39.Bb1 then 39... Nxd1 40.Rxd1 Qd4! 
click for larger viewOf course the actual played line in the game, utilizing the same first weakness, was very effective! |
|
| Jul-11-15 | | patzer2: I went down in flames on this Saturday puzzle with 37...Rh4?? which loses to 38. f6!  (+1.96 @ 23 depth, Deep Fritz 14).Keeping pressure on the center and preparing the exchange sacrifice to facilitate an attack on the King with <37...Rfe8!>  (-2.07 @ 20 depth, Deep Fritz 14), as played in the game, is the correct solution. Black had an opportunity earlier to exploit this idea of the exchange sac for a winning attack on the King with 35...Bf4! 36. Qg2 Rxe2 (-2.19 @ 21 depth, Deep Fritz 14). For an improvement for White I'd look to the opening, where I prefer 14. Qd4 = (0.00 @ 23 depth) over <14...Rhf1> = (-0.17 @ 23 depth). Also, the Najdorf Sicilian Poisoned Pawn variation with 8. Qd2 as in the recent Super GM game Radjabov vs Grischuk, 2015 might have offered White better survival chances. |
|
| Jul-11-15 | | kevin86: Double the rooks and win! |
|
| Jul-11-15 | | RandomVisitor: After 35...Bf2:
1: Roman Slobodjan - Igor Stohl, Hamburg 05 1993
click for larger viewAnalysis by Deep Rybka 4.1 x64:
<[+0.41] d=22 36.Qg2> f6 37.Bf3 Rg8 38.Qg4 Kh8 39.Rh1 Rc8 40.Be4 Rc7 41.Qh5 Be3 42.Qh2 Rd7 43.Ka1 Re8 44.Bf3 Rf8 45.Qg3 Rc8 46.Qg4 Rxc2 |
|
| Jul-11-15 | | RandomVisitor: After 31.Bg4:
1: Roman Slobodjan - Igor Stohl, Hamburg 05 1993
click for larger viewAnalysis by Deep Rybka 4.1 x64:
<[-3.38] d=19 31...Bxd2> 32.Qxd2 Qe5 33.Qxb4 gxf5 34.Bf3 Nd3 35.Qd4 Qxd4 36.Nxd4 Nf2 37.Rh4 Rg8 38.Kc1 fxe4 39.Bxe4+ Nxe4 40.Rxe4 Rg2 41.Nf3 Kxh6 42.Ne1 Rg3 43.Rd4 d5 44.b4 f5 |
|
| Jul-11-15 | | gofer: Black's main threat is Re1+ mating, White's only defender is Ne2 and even that it
attacked once. So I think my main option would be line up another piece attacking
Ne2. I looked at Qe3 but that looks too complicated, so I have gone for the simple
Rfe8...
<37 ... Rfe8>
At which point, I am struggling to find a good defence for white... <38 Bxe4 Rxe4>
39 Nc1 Re1
<39 Rd2 Rxe2!>
<40 Rxe2 Qd4!>
White's back rank weakness is horrible to defend!
41 Re1 Nd3 mating!
41 Rd3 Nxd3
42 c3 Qxc3
43 Qh1 Be1
<41 Qh1 Ne1>
<42 Kc1 Be3+>
<43 Rhxe3 Nxe3>
<44 Qe1 ...>
At this point black could easily win with Nxf5 and Nf1 looks nasty too. Lots to check
but as I am already 6 moves into the solution I had better check whether I am even
on the right path!
~~~
Yeah! |
|
Jul-11-15
 | | Jimfromprovidence: One of the top 3 puzzles difficulty wise I have encountered on this site. It took me forever to even find a plan for black to win. I was working with the line 37...Rfe8 38 Bxe4 Rxe4 39 Rd2, below, but could not find a break through. 
click for larger viewI think that there is promise with 39...Rxe2! 40 Rxe2 Qd4. 
click for larger viewThe threat is 41...Qd1#
Next comes 41 Rd3 Nxd3 42 cxd3 Qxd3+ 43 Rc2 Bc5 (Bc5 protects the b pawn and does not let white protect the f pawn), 
click for larger viewIt looks like black will win the f pawn right away, then use the threat of pushing the g pawn in order to win the h pawn. One possible solution is 44 f6 Qf1+ Rc1 Qxf6.
click for larger viewNote the mate in one for black.
So it looks like a dogfight still from this point on. Black will win the h pawn and be up a bishop and 3 pawns vs. a rook. |
|
Jul-11-15
 | | chrisowen: Crikey at e8 fanciful ive learn then ropes:
ave e4 takes and a c1 instead a d2 and white in ebb just ahead goes down mainline rook e1 and ahead d6 bad instant death d6 in drivers am manages a g2 black vow ahead an e3 rook takes and am e3 wreck light as
c1 wins white has to give up queen for knight an easy win iffy oh door as put h4 in ditto ok in team jail bird crack icicles e8 across am clean rook crick etc back rice rew i crew we revolvered as ive on again am clean e8 slide first then infer tile ground aim e4 trade an c1 not as good as a d2 as. White in just ahead and bad mistake definately it ohm indeed over stricter port of cull slide again am fanciful ive lets e8 minimal fuss over then spark at aim e4 an a d2 good to hold a dip at d6 instead a g2: queen gum ball rally vet still on dine i um in old sick i said as i i captain sidle up e8 or e2 both good jam i like is similar sink
window sills cage bold bag catch cog ball
vet e4 interest again revolves around black rooks am dark docks in slide e8 first arrive relentless pressure exerted in erm perfectly am good choice first winch holler in shaolin warrior e8 slide gas bag e4 and ebber soggy rates encircle sage to gap ba pold back have zam bam moot foot of then bill stiff infer any glass seal wax a cut i curry favour ave in a bold choice i vet e4. |
|
Jul-11-15
| | chrisowen: Downed in under submerge rook horse ebony and stays put kind to ebony am route one victor glide away angle am e8 first i bet e4 trade and best i d2 light just ahead d6 bad erm better glide a g2 um balls in
whites court a flurry it the point even then in to butter up in black have spark ash good beset infer better glide aim hood: act bold an i et tu brute in uniform appraisal old cold glory back pert ash e8 cred cervix a cut i curry favour ave in a while go build e8 fancifuls again lid jam veal lamb of god my lips are sealed rooks
drought e8 line one elephants again perchance to heed castles evermore a culpa d6 then a drifter as h2 a g2 lesson learnt only just in black ahead for hand erm head: path hone in affable demise of as white in dug i alive no more infer tile ground in mind over ash e4 line goods and aids aim dead in ash am bet i b2 stays put kinder a d2 instead of a c1 tune in famile off an e3 nests huffle and shuffle go build guffaw heartily in evermores abreast e8 catnip quench in enter thirst angle arrive spark bafflers e8 or e2 donkey up in ergos d6 bad erm ply am route one castles e8 eline good: fetch eg win i ebb horse hogtied down ash in het up aids clink ash good feels stay d5 put erm in a tour better glide over fence at evermore abreast e8 bad h4 as tender spots f6 white wins events a fetch aids glean am got affable to hopper i ho down ash e4 infer tile ground aim exactly 37...Rfe8 38.Bxe4 Rxe4 39.Nc1 ave too delineate 39.Rd2 debatable white am just ahead ever ash refferals 39...Re1 40.Rxd6 i prefer slide a doot bug erm any to go hood 40.Qg2 give spark black just ahead over sterner port of call an each in a while go
build off a nest over deck dock 40...Be3 41.Rxe3 Rxc1+ white has to give up queen for horse an easy came or a win as hove teeth crooked again ergo clasp i another bind as have spark back ukelele e8 rook
emperor erstwhile go build a nest off an estimates a win e4 trade off evers abreast e8 downs nearly am e1 culpa d6 a g2 um balls up e3 revs a win each again rook takes c1 why thinner pick fat chance in famile on gauge spark again gave clean away am route e8 won dinner pad ever chink of white cap caved in cosied head have back a lava fold in said hand bain spaced rooks d6 bad erm i tight ive sable brush in under
vets ash her mitigate a five piece win honour and hope ever am back robbed bereft: in bang de line ie rook ship safe get ramble give foot fate ago thinner pick fat chance in skim palm cone rook wins check a c1 re bus rug rack far gain stapel alive shone i back for driver swerve free foot veered back rank weakness over lame came thod carry angle white in ebb baffled hat plans mind over sterner port of call ive e8
truth in erstwhile go build castle trade off e4 re ply in ever am abreast e8 first barge made any banders pot of trouble chooses again good sac fog e4 shiplane rook emperor for a day pit pin er e3 mince back words bunted did so feels d6 ramble give spark diffuse am bad a g2 good an better glide back vent dent referral palms i remember aid skim palm cone rook and horse to bawl club to thump er rabble band job i: i captain ok infer tile ground rooks d6 bad give conundrum bless bastion of hope ever am link i have reman tell mash tier raid for tool bans again mind jangle ho it low ave learn in old back build key also bad diffuse a d2 i need serve in blew away am route won e4 traded orf back polled is an done to back pack care wind one church of ever reason ar blip chin chiller pin sic ave e4 just a minute hold on in ok re1 tins again richer pick in ply am e8 first slide for e4 ebber bang time trade in f3 erm e4 and back c1 i prefer a d2 white in ebb just
ahead ive then tomb to give one rook in off an e3 wins am c1+ cachet back and white has: to give up queen for horse an easy win although too difficult really am first e8 or donkey angle school in e2 both are free in to bus icicles e8 balance ford river one rook came. |
|
| Jul-11-15 | | tatarch: Feels like a position where many of us would have played 37...Rfe8 if we weren't thinking of it as a puzzle. |
|
| Jul-11-15 | | 5hrsolver: Missed the in between move 41..Rc1 but I think black still wins in my line 41..Qe3 42.Qd2 Qg8 followed by 43..Rd1 winning the rook or driving the queen away from protecting c1. |
|
| Jul-11-15 | | RandomVisitor: After 32.Rd5: a queen sacrifice is possible
1: Roman Slobodjan - Igor Stohl, Hamburg 05 1993
click for larger viewAnalysis by Deep Rybka 4.1 x64:
<[+0.00] d=30 32...fxg4 33.Rxc5 gxh3> 34.Rd5 Rae8 35.Qh1 h2 36.Rxd6 Bxh6 37.Rd5 Rh8 38.e5 Kg8 39.Qxh2 Bg7 40.Qg2 Rxe5 41.Rd8+ Bf8 42.c4 bxc3 43.Kc2 Kg7 44.Nxc3 Rh4 45.Qg3 Reh5 46.Qe3 Rh2+ 47.Kb1 Rh1+ |
|
| Jul-11-15 | | agb2002: The material is identical.
White threatens 38.Bxe4.
White's back rank and the dark squares around the castle are very weak. This invites to play 37... Rxe2 38.Bxe2 Re8: A) 39.Rd2 Rxe2 40.Rxe2 Qd4
A.1) 41.Qh1 Bg1
A.1.a) 42.Re1 Nd3 43.c3 Qxc3 and the double threat Qb2# and Qxe1+ seems to win. A.1.b) 42.Rd3 Nxd3 43.cxd3 Qxd3+ 44.Rc2 Qf1+ 45.Rc1 Qxf5+ and Black has two pawns for the exchange and the pawn on h6 will surely fall. A.2) 41.Rd3 Nxd3 looks similar to A.1.
B) 39.Bd1 Nxd1 40.Rxd1 Qd4 41.Kc1 (41.c3 Qxd1#; 41.Rc1 Qb2#; 41.Rxd4 Re1+ 42.Rd1 Rxd1#) 41... Qa1+ 42.Kd2 Be1+ 43.Rxe1 (43.Kd3 Qc3#) 43... Qxe1+ 44.Kd3 Qc3#. C) 39.Qxd6 Rxe2 looks good for Black (40.Qxb6 Re1+ 41.Rd1 Rxd1#). D) 39.Rxd6 Rxe2 is similar to C. |
|
| Jul-11-15 | | Funology: My line was similar to agb's - is 1. ...Rxe2 an alternative solution? |
|
| Jul-11-15 | | RandomVisitor: After 33...Rae8:
1: Roman Slobodjan - Igor Stohl, Hamburg 05 1993
click for larger viewAnalysis by Deep Rybka 4.1 x64:
<[+0.41] d=25 34.Qg3> Bc5 35.Rh1 Qd8 36.Rf1 Kh8 37.Nc1 Re3 38.Qg2 Re5 39.Qh1 Re3 40.Rd2 Qe7 41.Re2 gxf5 42.Rxf5 Rg8 43.Qh5 Rg6 |
|
| Jul-11-15 | | haydn20: < tatarch: Feels like a position where many of us would have played 37...Rfe8 if we weren't thinking of it as a puzzle.> Amen brother! I flashed to Rfe8 then said no a standard grab the file can't be right and wasted 1 hr looking at other lines. <offramp> "hagiographer" is the mot juste here--nicely put! |
|
| Jul-11-15 | | Jack Kerouac: A tough one for sure.
The men on the chess board were telling me where to go. So here I went:
https://www.youtube.com/watch?v=hnP... |
|
| Jul-11-15 | | RandomVisitor: After 37.Bf3:
1: Roman Slobodjan - Igor Stohl, Hamburg 05 1993
click for larger viewAnalysis by Deep Rybka 4.1 x64: <24-ply> 1. (-1.74): 37...Rxe2 38.Bxe2 Re8 39.Rhd3 Nxd3 40.Qh5 Qc7 41.Rxd3 Qe7 42.c3 bxc3 43.Rxc3 Qf6 44.Rc2 Qxf5 45.Qf3 Qxf3 46.Bxf3 Re1+ 47.Rc1 Re3 48.Bg4 Kxh6 49.Rf1 Re1+ 50.Rxe1 Bxe1 51.Bd7 Kg6 52.Be8 Kf6 2. (-1.49): 37...Rfe8 38.Bxe4 Rxe4 39.Rd2 d5 40.c3 g4 41.Qg2 Qf6 42.Rxd5 Rxe2 43.Qxg4 Re1+ 44.Kc2 Be3 45.Qg7+ Qxg7 46.hxg7+ Kxg7 47.Rxe3 Rxe3 48.cxb4 Kf6 49.b5 Re5 50.Rxe5 Kxe5 51.Kc3 Kd5 52.Kb4 Nd1 |
|
| Jul-12-15 | | CHESSTTCAMPS: In this opposite-colored bishops middle-game, material is even, with both sides having active pieces, but neither queen ideally centralized. White threatens both 38.Bxe4 and B|Qxe6. Both kings are lightly defended, with the white king in a tighter spot and vulnerable to a back-rank check if black can deliver one. This search first led me to the weak trap 37... Bg1? then to: 37... Rxe2! 38.Bxe2 (Rxe6? Re1+ is winning) Re8 and now white can't defend the bishop comfortably because of the back-rank problem: A) 38.Rxd6 Rxe2 39.c4 (Rxb6? Re1+ 40.Bd1 Rxd1#) Re1+ 40.Kc2 Be3! 41.Rxb6 Rc1# B) 38.Qxd6 Rxe2 39.Rh1 (Qxb6?? Re1+) Bg1! and the threat of Re1+ is deadly. C) 38.Rd2 Rxe2! 39.Rxe2 Qd4 40.Rd3 Nxd3 41.cxd3 Qxd3+ with at least a draw. All I have time for - time for review.... |
|
| Jul-12-15 | | patzer2: <RV> So after Black missed a relatively easy win with 31...Bxf2 , White passed up two opportunities to hold or even gain advantage with 34. Qg3  and 36. Qg2 before Black found the brilliant win solving our recent Saturday puzzle with <37...Rfe8!>. |
|
 |
|
< Earlier Kibitzing · PAGE 2 OF 2 ·
Later Kibitzing> |
Kibitzing
sac: 37...Rfe8