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| Feb-02-22 | | mel gibson: I got sucked in with this puzzle.
I also chose 26...Bg5+
which according to Stockfish 14 is a draw.
Stockfish 14 chooses only the same first ply as the text
and says it's mate in 31 moves:
26... Nd5
(26. .. Nd5 (♘e7-d5 ♔d2-e1 ♖f2xe2+ ♕d1xe2 ♗f6-h4+ ♔e1-d2 ♗h4-g5+
♔d2-e1 ♕f3-h1+ ♕e2-f1 ♗g5-h4+ ♔e1-e2 ♘d5-c3+ ♔e2-d2 ♕h1xf1 ♔d2xc3 ♗h4-e1+
♗c1-d2 ♗e1xd2+ ♔c3xd2 ♕f1xa1 ♔d2-c2 ♕a1xa2+ ♔c2-c3 ♕a2-f2 ♔c3-b4 ♕f2-b2+
♔b4-c4 ♕b2-d4+ ♔c4-b3 ♕d4xc5 ♘d6-c4 ♕c5xb5+ ♔b3-c3 ♕b5-c5 ♔c3-b3 a7-a5
♘c4-d2 ♕c5-c1 ♘d2-c4 ♕c1-d1+ ♔b3-c3 ♕d1-d4+ ♔c3-b3 ♕d4-d3+ ♔b3-a4 ♕d3xc4+
♔a4xa5 b7-b5 ♔a5-b6 b5-b4 ♔b6-a7 b4-b3 ♔a7-b6 b3-b2 ♔b6-a5 ♕c4-c6 ♔a5-b4
b2-b1♕+ ♔b4-a3 ♕c6-a6+) +M31/65 1526)
score for Black mate in 31.
( it solved over 32 billion board positions in 25 minutes -
8 core 16 thread CPU allocated 22 Gig of RAM -
so don't feel bad if you couldn't see it - LOL ) Trying the other ply - it leads to a draw - a 3 fold repetition:
26...Bg5+
(26. .. Bg5+ 27. Ke1 (♔d2-e1 ♖f2-f1+ ♗e2xf1 ♕f3-g3+ ♔e1-e2 ♕g3-g4+
♔e2-e1) 0.00/62 92)
score = a draw. |
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| Feb-02-22 | | saturn2: White threatens Qb3. To regain material for black I looked at 26.....Bg5+ 27.Ke1 Rxe2+ 28.Qxe2 Qc3+ 29.Kd1 Qxa1 but in the endgame white's queensidepawns are stronger than the black at the kingside. |
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Feb-02-22
 | | al wazir: What does black do after 29. Qc2 ? If 29...Bxa1, then 30. Nxe4. Now what? |
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| Feb-02-22 | | nalinw: Well I discarded Bg5+ but couldnt make Nd5 work .... Monday and Wednesday tough this week |
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Feb-02-22
 | | An Englishman: Good Evening: Much too difficult for me; felt like a weekend puzzle. |
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| Feb-02-22 | | Brenin: <al wazir>: If 29 Qc2 then 29 ... Bc3+ leads to mate in a few moves. |
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| Feb-02-22 | | paavoh: Huh? Could not find it after either Bg5 or Nd5. Amusing to see how White pieces are blocking each other in the variations you all presented. |
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Feb-02-22
 | | scormus: Wow, this is turning out to be a tough week, and we're only at Wednesday. Didn't take me long to give up on 26 ....Bg5+, but .... Nd5 27 exd5 e4 29 Ke1 looked promising.
I thought 29 ... Bxa1 looked rather prosaic. Can B can win directly? Maybe .... Qg3 or .... Bc6+.
I'm not sure, can't force it right through.
Time for SF |
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Feb-02-22
| | scormus: Ah, got move numbers wrong. And, in the ...Bxa1 line, forgot 28...Qg2 29 Kd2.
Have trouble remembering all the moves when I'm trying to write using the Android |
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| Feb-02-22 | | belgradegambit: This is medium easy? Wow in my old age I’ve become a patzer. |
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Feb-02-22
 | | pittpanther: i’m relieved to see I’m not the only one who struggled with this puzzle. I thought this was much harder than a typical Wednesday. but an interesting position! |
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| Feb-02-22 | | TheaN: I knew where was a catch when I spotted this position, I've posted on this one. Typically, my 2009 self went on upon the 28.Ke1 defense as played by Van Wely, where 28....Bc3+! wins amazingly. Of course it wasn't a puzzle so not sure how I got here. As a 26....? puzzle, I settled upon a winning position after <26....Nd5! 27.exd5> surprisingly, White has no alternatives here. By bringing in the knight, threatening Qc3# and covering e3, White is forced to capture. The best alternative to prove otherwise would be 27.Bb2? Bg5+ 28.Ke1 (Kc2 prolongs agony) Qh1+!! 29.Kxf2 Bh4#:
click for larger view<27....e4>:
click for larger view
And lets appreciate a position of beauty. White is two pieces up and has the move, but is completely paralyzed, with Qc3# and e3+ threatened. See my 2009 post for the analysis on 28.Ke1 Bc3+. If White attempts 28.Nxe4 the simple 28....Qxe4 -+ wins with similar threats (don't try 28....Bxa1? 29.Ke1 +- (Nxf2?? Qc3#)). Brilliant, but perhaps a bit hard for a Wednesday. |
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Feb-02-22
| | master8ch: The only thing clear to me about this is that I don't have a clue as to what constitutes a two-star puzzle. |
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Feb-02-22
 | | chrisowen: Honey v its auld Nd5 ghost its v accomodate v its honey v its auld milk its wick diy deb pebbles pegs its vat o gap gave its quarrel far fat v its jonty c its v hon u z its lub joe v its v ice its mig kan its way hood bumps it z v its ar quiff tax i jog duffle head its vis hedged its dice its clung its vic fetch find dent affable pack forth etc mad its gg nn ko bot g need its cod v its red it rev sided it ft a nod veal its whet an its v i stag gert sh vid sug it z ok nerd he tal lets galt hot pig nn rum its vis gm its vat doth lets lag its vis ms kind no nut no c dr thod alf lava its nil bale its vin its weary its ven o king its gen pod nn pec rea its kid ht its vas its wang muds v it scud dace its oe v its vid its v a sad thin lud ah its v bee flan its v path it i no bent trink do thaw its stag a na cane its com mea its her tj its owt us v its stones q lu ra post hop sats v its ana its v so lays ay its win nn ht gap ro u c its evict whet its vis ruse its what ply gall chick sith its vis heck op tint rev pit nn git mag vis its how its vat ma tenth nice its gms its le vid hat bess v its c ho dt het its valt as its v i lap dany did ent nn viced its pot hi ton v its wag its vans v its rex cane its v i dr lines hold dr fin i lud ufo its vid fond sec v its dr lavs bolts grinn ment c ron ref hat ro na sold tod v its pec all fat rey mo ten c hog u hat how its vis sun math rated its teen v its call mona vis its palm moth its vis quest go inn sag tar kin i skirt ss fall in baffle i c a hench v its st cut coven its foot ho oh too c nn jd embargo v its vis shh then its v i biff buff ho fog ram i v its rid he it hutch v its bar v its afoot its vat had may mo c its v i buff an its zap fiddle off no its i v st hi ten fang fog aha tar bolt v its hat eg ebb thin lan if dr co on a mum ms its vet nowt then hit woon rot c dt mc then ammo c v its v in u try i hew her dt us frog yin mr chany dt i cove its don mr toy mam c its v i da chad lift uscf long man o c hind iffy dr hi cc it vent nah rent gg id nn dr con I go pot its v nn crony v its ven go v its ft its whom v its ha re c mom its vis set nail c rot mam re co bert rolly don pt i nn dag c we v its off hellgate v its vis just bale it v i dean its bend v its fade it wayed it v i cold ban c cuddly din c i dad its v feel it led it lec ha gg fob ok v den it spec its win carried its away old its v a step too far v its vis appraisal stella wait and like Nd5 with; |
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Feb-02-22
 | | MissScarlett: Is <Caisso> in charge of the daily puzzles too? |
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| Feb-02-22 | | King.Arthur.Brazil: Black played very well. I found several moves, but I honestly didn't see at all when I began some lines, what is going to show next. Case of 29... ♗xa1. I chose because didn't see something better, even if fishouse says that is "?" bad. I liked the 30...e3+ 31. ♔xe3 ♕g3+ 32. ♔d2 ♕c3# or 31. ♔xe3 ♕g3+ 32. ♔d2 ♕c3#. Not too good is 31. ♔xe3 ♕g3+ 32. ♔e4 ♕e5+ 33. ♔d3 ♕xd6 ∓ or 31. ♔d3 ♕xd5+ 32. ♔xe3 ♕c5+ 33. ♔e4 ♕e5+ 34. ♔d3 ♕xd6+ etc. Maybe the best for white is 31. ♔c2 for which the natural 31...♖xe2+ 32. ♔b1 ♗e5 still gives to white some chances. Maybe, that's why the 30...♕f3 was chosen. The reply 32.c7! required attention.
For the 35. c8=♕+ ♖f8# directly! The sequence is forced for White. After 38...♖c1 seems game over, but White still fought. Maybe, it feel very sad because the 'smooth' move 44.♔g3 which threatened 45.♗h3 is refuted by 44... ♕e6 solely, since the desirable 45. ♗c4 only lose the ♗ because 45...♕xc4 also protects 46. c8=♕. If it was possible something like 45.♗d5, White would have saved the game. And now, it is Black who can destroy the 2 passed ♙ with 44...♕xd6+. For 48. a5 b6?? 49. a6 ♔e6 50. ♗b7. So the reply is: 45.a6 49. bxa6 bxa6 50. ♗f1 ♔e6 (which avoid 51. ♗xa6 ♕xa6 52.d7. Then 51. ♗h3+ g4. End. |
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| Feb-02-22 | | johnnydeep: Bah! Zero for three so far this week. |
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| Feb-02-22 | | AlicesKnight: I started (as others did) with 26. .. Bg5+ but 27.Kc2 is not forced (it would be easy if it were) and Ke1 did not lead to a straightforward win for Black either. Tricky one to win without silicon. |
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| Feb-02-22 | | agb2002: Black has a pawn for a bishop.
White threatens Qb3+.
The idea 26... Bg5+ 27.Ke1 Rf1+ 28.Bxf1 Qg3+ 29.Ke2 Qe3 fails due to 30.Bxe3. The knight is far from the action, th bishop x-rays the white rook and that idea lead to consider 26... Nd5, threatening Qc3#: A) 27.Bb2 Bg5+
A.1) 28.Ke1 Rf1+ 29.Bxf1 Qg3+ 30.Ke2 Qe3#.
A.2) 28.Kc2 Rxe2+ 29.Kb1 Re1 30.Qxe1 Qd3#.
B) 27.exd5 e4
B.1) 28.Nxe4 Qxe4
B.1.a) 29.d6 Qb4+ 30.Kc2 (30.Ke3 Qf4+ 31.Kd3 Qd4+ 32.Kc2) 30... Qc3+ 31.Kb1 Qxa1+ 32.Kc2 Qxa2+ 33.Kd3 Qd5+ 34.Ke3 (34.Kc2 Qc4+ 35.Kb1 -35.Kd2 Qc3#- 35... Rxe2 wins decisive material) 34... Qxc5+ 35.Ke4 (35.Kd2 Qc3#; 35.Kd3 Qd4+ 36.Kc2 Qc4+ as in the previous subline) 35... Qe5+ 36.Kd3 Qd4+ 37.Kc2 Qc2+ as above. B.1.b) 29.Qe1 Qd4+ 30.Kc2 Qc4+
B.1.b.i) 31.Kb1 Qe4+ and mate next.
B.1.b.ii) 31.Kd2 Bc3+ 32. Kc2 (32.Kd1 Qa4#) 32... Bxe1+ wins. B.1.b.iii) 31.Kd1 Qa4+ 32.Kd2 Bc3+ 33.Kxc3 Qa5+ and 34... Qxe1 wins. B.2) 28.Qe1 Qd3#.
B.3) 28.Ke1 Qg2
B.3.a) 29.Nxe4 Rf1+ 30.Kd2 (30.Bxf1 Bh4+ and mate next) 30... Rxd1+ followed by Qxe4 or Bxa1 wins decisive material. B.3.b) 29.Rb1 Rf1+ as above.
B.3.c) 29.Kd2 Bxa1 recovers material while keeping the attack but unclear (29... Bg4+ 30.Kc3 Rxe2 is probably weaker). |
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| Feb-02-22 | | Cellist: I saw the first two moves within seconds, but I went wrong very quickly thereafter, and I failed again and again as I tried to guess the right move (choosing losing or merely drawing moves). This is a really impressive game at the edge of a cliff. |
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| Feb-02-22 | | Ivan Karamazov: Let's see now: after 26...Nd5 27.exd4 e4, let's suppose White tries 28.Ne4. Not surprisingly 6secSF likes 28...Qxe4 (-15.33), then if 29.Ke1 
click for larger view SF says 29...Rf3(-16.81). Can someone explain that move to me? Now on 30.Qd2 
click for larger view SF says 30...Rg3. Huhhh?? Where did that come from?? But SF says mate in 13, and I think it's right. This is NOT a Wednesday Medium puzzle.
(Maybe if I change my handle again, I'll try "Grumpy".) |
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| Feb-02-22 | | dhotts: Amazing how Black found 26...Nd5!!, but then missed the Mate in 5 playing 28...Qg2? where 28...Bc3+ gives a sure fire mate in 5. |
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| Feb-02-22 | | Tiggler: I got as far as realizing that nothing works, and so Nd5 had to be the move. (It's supposed to be a puzzle after all so something has to work.) After that I had no idea. |
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| Feb-02-22 | | Cellist: UUUh. I HAD 28. ... Bc3+ next but assumed it did not work because the text move was different. So I am not quite as bad as I thought ... |
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Feb-03-22
| | al wazir: <Brenin: If 29 Qc2 then 29 ... Bc3+ leads to mate in a few moves.> Yes, that's decisive. I was fixated on 29...Bxa1 and didn't look at mate threats. Thanks. |
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sac: 26...Nd5
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