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Oct1118   dTal: Odradek, in your line after 38. Kf1 Black has 38. ... fx36 which is winning. You move 34. ... Rb2 is the key move in the 34. Kg1 line which I hadn't spotted, without which B is lost I think. 

Oct1118   areknames: <Odradek> After 34.Kg1 Rb2 can't White simply play 35.Qxd8? 

Oct1118   Walter Glattke: In my line one can play 36.R8b1 37.Re7 Re1+ 38.Kd2 Red1+ 39.Kc1 Rdc1+ 40.Kd2 draw or 39.Rbc1+ 40.Kb3 white wins. 

Oct1118   nalinw: 34. Kg1 opens a whole can of worms  in some lines even the pawn on h3 becomes critical .... may be a little tough for a Thursday 

Oct1118   stacase: I didn't see 34.Qe5+ but it didn't matter, Black's two Rooks had the power to complete the back rank mate. You just had to have the good sense to double them up with 36...Rbb1 pinning White's Queen instead of taking her (Patzer sees check says check) and winding up with Rook against a Rook and two extra Pawns 

Oct1118   Skandrino: I think after 34. Kg1 (the critical line), Rb2 does not work after 35. Qxd8 Rg2+ 36. Kh1 Ng4 (or Rf2) 37. Rf6! In my analysis, 34.Kg1 Ng4! and then:
35.Kf1 Nxh2+ 36.Ke2 Rb2+ 37. Ke1 Nf3+ (or Ke3/Kf2 Nh4+), followed by ...h2 and promotion.
Or 35. Re1 Rd2 36. Qf4 (36.Qxb8 Rg2+ 37. Kh1 Nf2# (or Kf1 Nxh2#)) Rbb2 01 

Oct1118   Skandrino: And so cutting off the king's escape with Ng4 first avoids all the messy lines after 34...Rd1+ 

Oct1118   Walter Glattke: 34.Kg1 Rb2 of Odradek A) 35.Qxd8 Rg2+ 36.Kh1 Ng4 39.Rxg6+ Kxg6 40.Qg8+ Kh5 41.Qxf7+ Kxg5 42.Qf4+ wins A2) 36.Rf2 37.Qf6+ Rxf6 38.Rxf6 wins, B) 35.Qe5+ Kh7 36.Qxe4? Odradek: Rd1+ Qe1 Rbb1 Kf1 fxe6) B2) 36.Rd6 Ng4 black wins.
C)35.Rxg6+ Kxg6 36.Qxd8 Rg2+ 37.Kh1 Rf2
38.Qd6+ and QxN (Kxg5 Qe7+/Kg7 Qd5+)White wins. 38.Kxg5 39.Qe7+ Kg4 40.Qxe3 Rf1+ 41.Qg1 Rxg1+ 42.Kxg1 Kf3 43.a4 or Kf5 Kf2 etc. 

Oct1118
  thegoodanarchist: Behold the power of the wedge pawn!! 

Oct1118
  wtpy: 34 Kg1 was problem line for me as well. For a couple of minutes tried to work out mating net with 34.. Ng4 but 35Re1 puts the kabosh on that. So back to 34..Rb1+ 35 Kf2 Ng4+ 36 Ke2 Rb2+ 37 Ke3 Nh2+ and am getting to the limits to my brain's RAM here but figured with h pawn black probably has enough to win. 

Oct1118   Walter Glattke: Skandrino plays 34.Kg1 Ng4; I found then 35.Rf6 Rb1+ 36.Rf1 and black is one move too late: 36.R8d1 37.Qxf7+ Kh8 38.Qf3, and 35.Rxg6+ has many difficult or even insane continuations, that is not "medium" here. 

Oct1118   TheaN: Thursday 11 October 2018
<32....?>
I had a vision error here. I'm safe to assume most came up with <32....Nxf1 33.gxf4 Nxe3>, and probably continued <34.Kg1>. My first error of vision was the fact that White can play 34.Qe5+!? even though after 34....Kh7 the Knight's immune on account of the game's continuation. After <34.Kg1!?> however Black has to be really accurate to convert. I had the incorrect vision to threaten mate with <34....Rd2?<>> with all White's nonforcing replies to fail due to mate on g2. Except, it's no mate on g2 :>. After <35.Qxb8 Rg2+ 36.Kh1 Nd1 37.Rxg6+! +<>> White's on his way to destroy Black's defenses and win Nd1. However, after <34....Rb1+ 35.Kf2 Ng4+ 36.Ke2 (Kf3 Nxh2+! + is also what I missed) Rb2+ 37.Ke1 (Kf1? Rd1+ 38.Re1 Nxh2+ 39.Kg1 Rxe1#; Kf3 Nxh2+ +) Rdd2!! +> holy $@(# that last move. Balls of steel if you'd envision that OTB. Obvious White didn't play the best defense but I'm sure Plachetka had it covered. 

Oct1118   TheaN: Interesting in this combination is that when Black is down Q v RN, the winning combination is not that easy to spot. It's obvious Black has enough compensation for the Queen but should be wary of sacrifices of White that can level the material imbalance and even trade off all pieces. In the end, Pa3 may be White's most conclusive weapon if Black screws it up. 

Oct1118
  chrisowen: Venom nf1ins fluin keyin pg5ins gunksy keyin reely ne3in egger qe5ins ebbers lucks its give 34.Kg1 kestrel accost findy guild 1 it lowin keyin liddy keyon kinky luckin kh7ins harangue lucky qe3ins ebber lucks its giver 35.Kg1 kestrel adoer guild bindy keyin 5 6 build rd1ins dinky qe1ins egger lucks its mindby 36Rbb1 kestrel keyin keyon kinky fordy hooty endor keyin build 7 8 guild keyin venom dusky densy guvnor gunky
quick keyin qwerty husky hawthorne about warble windy bindy boily keyin
bopum copum bindy keyin cinch keyin keyur plucky cajole mitzy it's vasty
hooty oreoy keeny keyon kinky keyin thory baply binds its vasty throne keyin bapsy barry barhop nesty abhors keyin penty bahts frack keyat nf1ins fluid keyin venom keyat nestle keeny dusky duggy gucky quick qwerty rutty hooty hawthorne waggy babsy boily keyin blippy bopum copum keuco keyin cindy bindy cajole mitzy it's vasty hooty oreoy keeny keyon kinky keyin thory baply bindy keyin lucks its fa 32Nxf1 33.fxg5 Nxe3 34.Qe5+ kestrel findy duddy hooty accolade fluid ebbers keysy keyin dutch huddy nf1ins flubb flick fluid fluff fifty flush fully kelly firth fisty flick flunk flung flight gulch huffy flush huggy lucks its give; 34.Kg1
kestrel accost findy guild;
1 it lowin keyin liddy vowin videy cinch lucks its hive 34Kh7 35.Qxe3 kestrel clung ducky keyin adoer ebber lucks its giver 35.Kg1 kestrel adoer guild keyin 5 6 build lucks its diver 35Rd1+ kestrel flick keyon kinky lucky ducky lucks its everin 36.Qe1 Rbb1 kestrel keyin keyon kinky fordy hooty endor keyin build 7 8 guild gulch jippy pjsin jumpy puggy
piggy gippy juggy dusty druids keuco dissy guffy giggy figgy gifty flight
duddy diddy addup fluff ibuck besty ghost ghoul keyin venom nf1ins of course it is moray reely flubb; 

Oct1118   Walter Glattke: TheaN: 36.Kf3 Nxh2+ 37.Kf4 Rf1+ 38.Ke4 Re1+ 39.Kf4 could be draw. 

Oct1118
  thegoodanarchist: So it turns out that 21.Kh1 was eventually exploited by Black. The White king needed to be closer to the back rank "luft" square at f2. Should we call 21.Kh1 a mistake? Is it dubious?! 

Oct1118   siggemannen: So, what's the definite line after 34.Kg1? 

Oct1118
  cormier: click for larger viewAnalysis by Houdini 4
<22...Nb3> 23.Bc3 Bxc3 24.dxc3 Kg7 25.Rfd1 Qf6 26.Qc7 Rhd8 27.Qf4 Qxc3 28.Kg1 Ra8 29.Qf3 Kg8 30.Qg4 Nd2 31.Rbc1 Qf6 32.Qxh3 Rxa3 33.Ng4 Qd4 34.Ne3 Qe4 35.Qg2 Nf3+ 36.Kh1 Rxd1+ 37.Rxd1 Kg7 38.h3 Qb7 39.Nf1 Qa8 40.Ne3 Qe4 41.Qf1 Ra2 42.Qg2
 / + (0.92) Depth: 26 dpa done 

Oct1118
  Jimfromprovidence: If 33...Rb1, black threatens mate next move.
click for larger viewDoes 34 Qe5+ help white? If not, how then does white win? 

Oct1118
  cormier: click for larger viewAnalysis by Houdini 4: d 22 dpa done
<1. = (0.00): 22.Bc3> Kg8 23.Qa7 Nb3 24.Rfd1 Bd4 25.Bxd4 cxd4 26.Ng4 Qd6 27.Qd7 Qc5 28.f4 Qf5 29.Nf2 Qc2 30.Qc6 Kg7 31.Qc7 Rbc8 32.Qe5+ Kg8 33.Ng4 Qxc4 34.Nf6+ Kf8 35.Qd6+ Kg7 36.Qe5 Kf8 37.Qd6+ 2. = / + (0.58): 22.Bxd4 Bxd4 23.Qc6 Rxb1 24.Rxb1 Kg7 25.Qf3 Qa5 26.Nf1 Qa4 27.d3 Qxa3 28.Rb7 Rf8 29.Kg1 Qa2 30.Rc7 Qc2 31.Rb7 Kg8 32.Rd7 Qb2 33.Ra7 Qb1 34.Qe4 Kg7 35.Rb7 Qa2 36.Qf3 Qc2 37.Ra7 Qc1 38.Rb7 Qc2 39.Ra7 2.  / + (0.75): 22.Qa4 Ne2 23.Qc2 Bxb2 24.Rxb2 Kg7 25.Rxb8 Qxb8 26.Qe4 Rd8 27.Rb1 Qa8 28.Qxa8 Rxa8 29.Ra1 Ra4 30.f3 Nd4 31.f4 f5 32.d3 Nb3 33.Ra2 Nc1 34.Rc2 Nxd3 35.Rc3 Nf2+ 36.Kg1 Ne4 37.Rd3 Ra7 38.Nd1 Rb7 39.Kf1 Rb1 40.Ke2 Ra1 41.Kf3 Ra2 42.Rd7+ Kf6 

Oct1118   AlicesKnight: Found most of the gameline and also hit the problem of 34.Kg1 identified above. Deceptive. 

Oct1118
  agb2002: Black is two pawns down.
White threatens fxg5.
The position of the white king suggest 32... Nxf1: A) 33.fxg5 Nxe3 (33... Rb1 34.Kg1 Rd2 35.Nf5+ gxf5 36.Qe5+ wins for White) A.1) 34.Qe5+ Kh2
A.1.a) 35.Qxe3 Rd1+ 36.Qe1 (36.Qg1 Rbb1 37.Re1 Rxe1 and mate next) 36... Rbb1 37.Kg1 Rxe1+ 38.Rxe1 Rxe1+ wins a rook. A.1.b) 35.Kg1 Rb1+ 36.Kf2 Ng4+ followed by 36... Nxe5 wins a rook. A.2) 34.Kg1 Rb1+ (34... Ng4 35.Re1 +/ ; 34... Rd2 35.Qxb8 Rg2+ 36.Kh1 Rf2 37.Rxg6+ fxg6 37.Qc7+ Rf7 38.Qe5+ Kh7 39.Qxe3 Rf1+ 40.Qg1 + ) 35.Kf2 Ng4+ A.2.a) 35.Kf3 Nxh2+ and the hpawn looks very dangerous for White. A.2.b) 35.Ke2 Rbd1, threatening R8d7 and R8d2+, looks very good foe Black. B) 33.Nxf1 Qg4 34.Re3 Rb1 35.Qe5+ Kh7 36.Kg1 Rdd1 wins. 

Oct1118
  cormier: 32... Nf1 33. fg5 Ne3:
click for larger viewAnalysis by Houdini 4 : d 28 dpa done only
1.  + (10.43): 34.Rxg6+ Kxg6 35.Kg1 Ng4 36.Kf1 Nxh2+ 37.Ke1 Rb1+ 38.Ke2 Rb2+ 39.Ke3 Re8+ 40.Kd3 Nf1 41.Qd6+ Re6 42.Qf4 Rd2+ 43.Qxd2 Rd6+ 44.Ke4 Rxd2 45.a4 h2 46.Kf4 h1Q 47.a5 Re2 48.g4 Qe4# 2.  + (17.37): 34.Kg1 Rb1+ 35.Kf2 Ng4+ 36.Kf3 Nxh2+ 37.Ke3 Re1+ 38.Kf2 Rf1+ 39.Ke2 Rdd1 40.Qe5+ Kh7 41.Qe4 Rde1+ 42.Kd3 Rxe4 43.Rxe4 Nf3 44.Re2 Rd1+ 45.Ke4 Rd2 46.Kxf3 Rxe2 47.Kxe2 h2 48.g4 h1Q 49.Kd3 Qf1+ 50.Kc2 Qe2+ 51.Kb3 Qd1+ 52.Kb2 Kg7 53.a4 Qxa4 54.Kc1 Qxc4 55.Kc2 Qa2+ 56.Kd3 Qd5+ 57.Ke3 Qxg5+ 58.Kf3 Qe5 59.c4 Qc3+ 60.Kf4 Qxc4+ 61.Kg3 Qa4 62.g5 3.  + (17.54): 34.Qe5+ Kh7 35.Qxe3 Rb1+ 36.Qe1 Rdd1 37.Kg1 fxe6 38.Qxd1 Rxd1+ 39.Kf2 Rd2+ 40.Kf3 e5 41.a4 Rxh2 42.Kg4 e4 43.Kf4 Rf2+ 44.Ke3 Rb2 45.Kxe4 h2 46.Kd5 h1Q+ 47.Kxc5 Qb7 48.Kd4 Qf3 49.a5 Rd2+ 50.Kc5 Qf8+ 51.Kb5 Qb8+ 52.Kc5 

Oct1218
  patzer2: After a hard day's work cleaning up storm debris (just tree limbs and yard waste thankfully) after hurricane/tropical storm Micahel, I tackled today's Thursday (32...?) puzzle. Even though I was physically worn out, I managed to find the first five moves of the combination. However, after White's 36. Qe1 my fatigue fatigue caught up with me as I went for the weak 36...Rxe1? 37. Rxe1 ± to + (+1.45 @ 31 ply, Stockfish 9). What I overlooked was the strong, winning game move 36...Rbb1! + (132.67 @ 32 ply, Stockfish 9). P.S.: So where did White go wrong?
The computer indicates the losing move was 28. Rd6? allowing 28...Qe7 + (2.59 @ 37 ply, Stockfish 9). Instead, 28. Kg1 Qe7 ∓ (0.54 @ 33 ply, Stockfish 9) gives White a flight square for the King with drawing chances. Earlier, instead of 20. bxc5 h3+ = White could have improved and maintained an edge with 20. Bxd4 ⩲ (+0.40 @ 36 ply, Stockfish 9). 

Oct1218
  messachess: I saw the beginning! 


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