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| Jan-26-22 | | actinia: okay, for a computer. A human would play Rc6 and that is why NN resigned. |
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| Jan-26-22 | | landshark: I "settled" for <Brenin's> Rc6, which may not be the engine's best, but just destroys black's chances then and there. |
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Jan-26-22
 | | GrahamClayton: <newzild>
After noticing that the queen sac doesn't work (35. Qxd5+ Qxd5 36. Bb6+ Ke8 37. Rc8+ Be8), I reversed the first two moves.<newzild>
Didn't see 37...Be8 when I analysed just by looking at the diagram - should have set up the position on a board and played the moves. |
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| Jan-26-22 | | Refused: 1.Bb6+ Qxb6 2.Qxd5+
a) 2...Qd6 3.Qa8+ Qb8 4.Qxb8#
b)2...Ke8 3.Qd7#
c) 2...Bd6 3.Rc6 white at least regains his piece now, and with the rook now actively involve in the king hunt, this should be over before too long.
alternatively
3.Qxg5+ Be7 (what else?) 4.Rd1+ Kc8 Qxe7 should also work, but I am too lazy calculate it lines now, thus I willl settle for the more prosaic 3.Rc6 oh, almost forgot that Black has to capture the on b6 as 1...Ke8 2.Qg6+ Rf7 3.Qxf7# ends the game instantly. |
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| Jan-26-22 | | saturn2: I had also 35.Bb6+ Qxb6 36. Qxd5+ Bd6 (Qd6 37.Qa8) < 37.Rc6 > instead of 37.Qxg5+ |
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| Jan-26-22 | | agb2002: White is one pawn up.
Black threatens Rxf5.
The black queen protects d5. Therefore, 35.Bb6+ Qxb6 (35... Ke8 36.Qg6+ Rf7 37.Qxf7#) 36.Qxd5+ Bd6 (36... Qd6 37.Qa8+ Qb8 38.Qxb8#; 36... Ke8 37.Qd7#) 37.Qxg5+ Be7 (37... Ke8 38.Rc8+ Qd8 39.Q(R)xd8#) 38.Rd1+ Kc8 (38... Ke8 39.Qg6+ Rf7 40.Qxf7#; 38... Kc7 39.Qxe7+ Kb8 40.Qxf8+ wins decisive material) 39.Qxe7: A) 39... Rh8 40.Qd7+ Kb8 41.e7 Qc8 (41... Qe3 42.Qd8+ wins the rook -42... Rxd8 43.exd8=Q+, etc.-) 42.Qb5+ A.1) 42... Qb7 43.Rd8+ wins decisive material.
A.2) 42... Ka7 43.Rd7+ Ka8 44.Qa5+ and mate in two. A.3) 42... Ka8 43.Rd8 Rxd8 44.Qa5+ Kb7 (44... Kb8 45.exd8=Q wins) 45.exd8=N+ wins decisive material (45.exd8=Q Qc1+ and mate in two). A.4) 42... Kc7 43.Rc1+ wins decisive material.
B) 39... Rf5 40.Qd7+ Kb8 41.e7 wins.
C) 39... Rd8 40.Rxd8+ Qxd8 41.Qxd8+ Kxd8 42.a5 wins. |
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| Jan-26-22 | | Nosnibor: Not too difficult to spot noticing the how the Black King is hemmed in by his cohorts. |
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Jan-26-22
 | | Teyss: Missed the 36...Bd6 defence which means I flunked the puzzle. And it's only Wednesday *sigh* For what it's worth SF gives +148 to 37.Rc6 (41 ply) versus mate in 20 to 37.Qxg5+ as noted by Mel Gibson. So yes the latter is better (unless you really like Q vs R endings) but first you have to check Black's options on the 39th move as <agb2002> did. Four more days 😕 |
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Jan-26-22
 | | OhioChessFan: I don't agree with the 37. Rc6 crowd 37. Rc6 Qb4 is not all that clear. Maybe 38. Qxd6+ Qxd6 Rxd6+ Ke7 40. Rb6 Rd8 and I don't think White wins.
click for larger view |
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Jan-26-22
| | OhioChessFan: Okay, I see <Teyss> notes SF evaluation as winning. I'm not sure how easy it would be for either side OTB. |
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| Jan-26-22 | | Refused: wrong position.
The pawns on the queen side are not split (a4 and b2 instead of c2). And why would white ever want to exchange queens? The Black king is the one without cover. 38.Rxd6+ Ke7 39.Rd7+ Kf6 (Kxd6 doesn't strike me as survivable) 40.Qd1 admittedly not my favorite move, but the only way to deal with the back rank issues while keeping the queens alive. |
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Jan-26-22
 | | chrisowen: Rez its o auld Bb6+ gaggle axiom gate v its jag aha its ravid rez its o auld cups its v i plink muck hal its fag footed i v its banque juniper its way ie its z rove its cleans v its nap ko hut z it vary rang bind frequent maw its honeypot nn ado it baffle its v i blip its v it off bang flush iffy goggle give its v acrid muddle id blush bah lad st it efface v its effect its vet peg ar flubb gi next mam iced it ha sum out lan figure peer rant v its molly duke tot plat c hind far lend ar ft its v thin re effigy hub find he don c it v padre its cuff linty sin prom thus mr its co malt ebbs prod ft nt he elf crab tight re it i vat it serpent yep its call nah c its v o roy fan its ova clap co its v i maid sh so um al nut ladsoak its ova swall mom set ins viper mort cue its pan titter maily mic sad eco mam hoof flood hi ft v it corp no v its dr man hind barres its charm its v st har v its ft ar let rew nt potd bet ow dt nor rev its ah its vain torn tarn ping xl cent ex boa oe mc on con pit dint st its v i coy calm hens ta us then sac it sec ammo c crack dr ye nads v its clod fens its v i clap cd well peas bug farm grinchy nab a doc it et bed c to v its by fifty it notty hurry au no hand it sent lorry no dt its v i solar herry in bone toll purry bill really so its v i up hale feng shilljong ok art till u v its quo nt c hog bana baddy beds flog hip light cans clad feel it now barry c head a dinner pill to swallow chop hint each beat spur fin it post it code bb6 bursary nn it lerry Bb6+ bah. |
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| Jan-26-22 | | Brenin: <OCF>: 36 ... Bd6 37 Rc6 Qb4 38 Qxg5+ Be7 (Ke8 39 Rc8 mate) 39 Qe5, and White has too many mating threats. |
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| Jan-26-22 | | agb2002: <Teyss
...
For what it's worth SF gives +148 to 37.Rc6 (41 ply) versus mate in 20 to 37.Qxg5+ as noted by Mel Gibson. So yes the latter is better (unless you really like Q vs R endings) but first you have to check Black's options on the 39th move as <agb2002> did.>I saw the maneuver 37.Qxg5+, 38.Rd1+ and didn't even consider the alternative 37.Rc6 but I have just noticed something strange in my post: 41... Qc8 in my line A is illegal... Trying to solve the POTD immediately after waking up (as a first 'coffee') sometimes leads to such peculiar hallucinations. |
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| Jan-26-22 | | TheaN: I want to add into the 36....Bd6 37.Rc6 or 37.Qxg5 argument (mind, if you stopped before that and considered the puzzle solved, I'd check again). I too had the rather easy to stop fork 37.Rc6, and whilst it evaluates +150 on the low SF ply (meaning something around M30 usually), there is a catch: after 37.Rc6 Qb4, the only +150 variation is to <still> play Qxg5+: 38.Qxg5+ Be7 39.Qe5 +-:
click for larger view
This keeps all the similar tactics alive without needing Rd1+. In fact, playing 38.Rxd6+ reverts to only +3: 38....Ke7 39.Rd7+ Kf6 40.Qd1 Qe4:
click for larger view
Time control with a +3 position, but it's not that trivial to convert. Qxg5+ is imo crucial. |
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Jan-26-22
| | Teyss: <agb2002 (...) 41... Qc8 in my line A is illegal> Yes, I thought you had moved to fairy chess there but at that stage White is winning because e8=Q+ is unavoidable so didn't feel like correcting you. It's good you solve when you're not at 100% capacity so we don't feel too much like patzers in comparison. |
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Jan-26-22
 | | gawain: I don't often check in on Wednesdays, but I solved this one, sort of. Found the main line but no Gold Star. |
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Jan-26-22
| | Teyss: <TheaN> Well spotted, you reunited the Rc6 and Qxg5+ lines. 39.Qe5 threatens 40.Qc7+ Ke8 41.Qd7#, so Black has to try either: (a) 39...Ke8 40.Qxh5+ Kd8 41.Qd1+ Bd6 42.Rxd6+. We revert to the 38.Rxd6 line except that 2 BPs are gone on the Kside (and White's first rank is still covered). Definitely winning.
click for larger view
(b) 39...Qb7 40.Qa5+ Ke8 41.Rc7 (diagram) Qmoves 42.Rd7 threatens Qxh5 and mate. If 42...Rh8 43.Qf5 and mate.
click for larger view |
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| Jan-26-22 | | Stanco: 35.Bb6+ Qxb6 36.Qxd5 Bd6 37.Qxg5+ Be7 38. Rd1+ and it's mate in twenty |
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Jan-26-22
 | | scormus: <Jim> your endgame postion is completely winning, but I wonder if B was a bit previous in conceding. Pillsbury was playing blindfold simul, so it might have been worth giving it a shot if there was any chance to make him play out an ending. Or is that too inglorious? |
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| Jan-26-22 | | AlicesKnight: I saw the main lines of Bb6+ and Qd5+, expecting ... Bd6 and replying with Rc6 with a king-hunt in mind (missing Qxg5 which some say is essential). But I'm not blindfolded and only looking at one board ... |
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Jan-26-22
 | | Jimfromprovidence: <scomus> I never noticed that it was a blindfold simul. Good point you raise. I have a hard time remembering the 6 number code the bank sends me to access my account. |
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Jan-27-22
| | scormus: <Jim> Yes! I can't understand how anyone can play blindfold, let alone simul as well. I couldn't do it to save my life |
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Jan-27-22
 | | perfidious: I played six blindfold games simultaneously at Montpelier, Vermont in 1984. It was not easy. |
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Jan-27-22
 | | fredthebear: "Yawn. Whatever." |
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sac: 35.Bb6+