|Jan-12-18|| ||ChessHigherCat: Nobody's screaming to be first on this one! I'll give you a hint: Buskirk is German for "Bus Church", a church bus for dyslexic youngsters.|
I considered playing f5 and trying to get something going on the h file: 29...f5 30. hxg4 hxg4 31. Rxd6 Rh1
Now black is threatening Qh4# but unfortunately white can get out of it with Rxg6+ followed by Rg5
|Jan-12-18|| ||al wazir: My move was 29...f5. If 30. hxg4 hxg4, black attacks with ♖ and ♕ on the open h-file. If 30. e6, then 30...h4+ 31. Kf3 Nh2+ 32. Ke2 Reb8 33. Ra2 Nf1 34. Q moves, and now black attacks with ♖ + ♖ along the first rank. |
I think 29...Kg7 also wins.
|Jan-12-18|| ||leRevenant: <ChessHigherCat> To be pedantic, the German word for church is Kirche. Kirk sounds more Scottish, Laddie.|
|Jan-12-18|| ||ChessHigherCat: <leRevenant:> Are you threatening to revoke my poetic license?|
|Jan-12-18|| ||leRevenant: No. Sincerest apologies !|
|Jan-12-18|| ||goodevans: The main alternative to the game line it seems we need to consider is <31.Kh2 Qxe5+ 32.Bf4>. Now we have to find the excellent <32...Qe1!> to which white has no suitable response.|
|Jan-12-18|| ||7he5haman: Is Black REALLY winning after 34.Ke3 Rxg2 35.Kf3? Or 34.Ke1 Rxg2 35.Kf1?|
|Jan-12-18|| ||mel gibson: Too hard for me.
Stockfish 8 says:
29. Kg3 Nxe5 (29. .. Nxe5 (♘g4xe5 f4xe5
h5-h4+ ♔g3-f2 ♕e7xe5 ♗e3-f4 ♖b1-b2 ♗f4xe5 ♖b2xd2+ ♔f2-e3 ♖d2-b2 ♖a6xd6
♖e8xe5+ ♔e3-d3 ♔g8-g7 ♖d6-d8 ♖e5-g5 ♖d8-c8 ♖g5-g3+ ♔d3-e4 ♖b2xg2 d5-d6
♖g2-d2 ♖c8xc5 ♖d2xd6 ♗c4-d5 ♖g3xh3 c3-c4 ♖h3-g3 ♖c5-a5 h4-h3 ♖a5-a2 ♖d6-f6
♖a2-e2 ♖f6-f5 ♖e2-h2 ♔g7-f6 ♖h2-b2 ♔f6-g5 ♔e4-d4 ♖f5-f4+ ♔d4-c5 ♖g3-d3
♔c5-c6 f7-f5 ♗d5-f7 ♔g5-f6 ♗f7-d5 g6-g5) +5.77/37 73)
score for black +5.77 depth 37 - 563 million nodes searched.
|Jan-12-18|| ||trnbg: why not simply 29...Nxe3? The endgame after 30.Qxe3 dxe5 31.fxe5 Qxe5+ 32.QxQ dxe5 should be an easy win for Black.|
|Jan-12-18|| ||offramp: <leRevenant: <ChessHigherCat> To be pedantic, the German word for church is Kirche. Kirk sounds more Scottish, Laddie.>|
If you really are <un révénant> then you might know that kirk is also the Picardy (France) word for church, as in DUNKIRK.
It is easy to remember: Kirk, Picard.
|Jan-12-18|| ||malt: At first went for
<29...N:e5 30.fe5 h4+ 31.Kf2 Q:e5 32.Bf4>
because of the weakness at h4 I went for 29...Rh1 (30.hg4 Qh4+ )but 30.e6
scuppered that line, going back I found <32...Rb2!> 33.B:e5
(33.Q:b2 Q:f4+ 34.Kg1 Re1+ 35.Bf1 R:f1#)
33...R:d2+ 34.Ke3 Rb2 35.R:d6 R:e5+
|Jan-12-18|| ||thegoodanarchist: My favorite move was 37...Rf8, pinning the White Rook and preventing any windmills.|
|Jan-12-18|| ||goodevans: <7he5haman: Is Black REALLY winning after 34.Ke3 Rxg2 35.Kf3? Or 34.Ke1 Rxg2 35.Kf1?>|
After either <34.Ke3> or <34.Ke1> white has just pinned his own Be5 so black's response should be to simply move his R out of harm's way with <34...Rb2> knowing he can pick off white's B at leisure.
|Jan-12-18|| ||morfishine: What a nice combination
I didn't see any of it
|Jan-12-18|| ||patzer2: For today's Friday puzzle (29...?), I missed Black's brilliant combination 29...Nxe5!! (only winning move) 30. fxe5 h4+! (only winning move) 31. Kf2 Qxe5+ 32. Bf4 Rb2! (only winning move) -+ (-6.10 @ 38 ply, Stockfish 8).|
My failed try was the simple 29...Nxe3 which gives Black a less than clearly decisive advantage after 29...Nxe3 30. Qxe3 h4+ 31. Kh2 Rbb8 ∓ (-0.97 @ 33 ply, Stockfish 8).
P.S.: White's game starts to go bad with 22. f4? allowing 22...Bxc3 23. bxc3 b5 24. axb5 Nxb6 ∓ (-1.25 @ 30 ply, Stockfish 8). Instead, White can maintain the advantage with 22. Bd3 ± (+1.03 @ 30 ply, Stockfish 8).
White's game goes from bad to worse with 22. Rxa6? allowing 25...Nc4 -+ (-3.47 @ 29 ply, Stockfish 8). Instead, White can minimize the damage with 22. Rxb6 Rxb6 23. Bd3 Nf6 24. Bf2 Reb8 ∓ (-1.17 @ 30 ply, Stockfish 8).
|Jan-12-18|| ||gofer: OTB, I would play <29 ... Nxe3 30 Qxe3 dxe5> and fully expect to win in the long run. But this
is a <Friday> POTD and so we can look for something a bit more special and after really quite
a long time I have come to the realisation that I really rather like <29 ... Rh1>. It's a longterm
positional "banker". I cannot see a really good response for white, as accepting the knight
sacrifice opens up the white king to a world of pain...|
<29 ... Rh1>
click for larger view
30 Rxd6 Nxe3
31 Qxe3 Qxd6
32 exd6 Rxe3+ -+
30 exd6 Qxe3+
31 Qxe3 Nxe3
32 Bb5 Nf5+ -+
30 hxg4 Qh4+
31 Kf3 dxe5 -+
Doh! Never thought of <29 ... Nxe5> and Stockfish really doesn't like <29 ... Rh1> much, but he likes it
better than my only other plan <29 ... Nxe3> - so half a point maybe...
1) -3.77 (32 ply) 1...Nxe5 2.fxe5 h4+ 3.Kf2 Qxe5 4.Bf4 Rb2 5.Bxe5 Rxd2+ 6.Ke3 Rb2 7.Rxd6 Rxe5+ 8.Kd3 Rg5 9.Rc6 Rgxg2 10.Ke4 Rg3 11.Rxc5 Rd2 12.Rc7 Kg7 13.d6 Rxd6 14.Rxf7+ Kh6 15.Rf3 Rc6 16.Bd5 Rxc3 17.Rxc3 Rxc3 18.Be6 Kg5 19.Bg4 Rb3 20.Ke5 Re3+ 21.Kd5 Kf4 22.Kc4 Kg3
2) -1.60 (31 ply) 1...Rh1 2.e6 Nh6 3.Kf3 Nf5 4.Bf2 Kh8 5.Rb6 g5 6.Qd3 Qf6 7.Ke2 fxe6 8.dxe6 gxf4 9.Kd2 Qg5 10.Qf3 Ra1 11.Rb2 Rg8 12.Kc2 Ne3+ 13.Bxe3 fxe3 14.e7 Qg6+ 15.Bd3 Qxg2+ 16.Qxg2 Rxg2+ 17.Kb3 Rxb2+ 18.Kxb2 Ra8 19.Bb5 e2 20.Bxe2 Re8 21.h4 Rxe7 22.Bxh5 Kg7 23.Bg4 Re3
3) -0.59 (31 ply) 1...Nxe3 2.Qxe3 Rh1 3.Qe4 dxe5 4.Kf3 exf4 5.Rxg6+ Kf8 6.Qxe7+ Rxe7 7.Rc6 Rc1 8.Kxf4 Rxc3 9.Rxc5 h4 10.d6 Rd7 11.Rc6 Rc2 12.Ke5 Kg7 13.Bd5 Re2+ 14.Kf5 Rd2 15.Ke5 Rd8 16.Rc7 Re8+ 17.Re7 Kf8 18.Rxe8+ Kxe8 19.Bc6+ Kd8 20.Bf3 Rd3 21.Bg4 Rd2 22.Kf6
|Jan-12-18|| ||Jimfromprovidence: I stumbled onto an excellent side puzzle.
Say white counterattacks with 30 Ba2, below, instead of taking the knight, putting two black pieces en prise.
click for larger view
Black to play and win.
|Jan-12-18|| ||goodevans: <Jimfromprovidence> I solved it quite quickly, but the speed at which I did was down to it having <...h4+> and <...Rb2> elements in common with the game.|
30...h4+ 31.Kf2 Rb2 wins the Q.
30...h4+ 31.Kh2 Nf3+ 32.gxf3 Qxe3 33.Qxe3 Rb2+ and black emerges the exchange up for an easy endgame win.
|Jan-12-18|| ||Grandma Sturleigh: <trnbg: why not simply 29...Nxe3? The endgame after 30.Qxe3 dxe5 31.fxe5 Qxe5+ 32.QxQ dxe5 should be an easy win for Black.>|
White would play 31. Rxg6+.
|Jan-12-18|| ||newzild: <jimfromprovidence>:|
30...Nc4 looks winning to me.
31. Bxc4 Qxe3+
32. Qxe3 Rxe3+
Followed by 33...Rxc3 and White's remaining bishop is embarrassed for safe squares.
31. Qc2 Qxe3+
Not 32. Kh4 Qxf4#
32...Rc1 and Black has time to save his knight
|Jan-12-18|| ||JeffH1165: Tough one. I got to mate in nine moves with Rh1|
|Jan-12-18|| ||agb2002: Black has a rook and a knight for the bishop pair and a pawn.|
White threatens hxg4 and Rxd6.
The first idea that comes to mind is 29... Nxe3 30.Qxe3 (30.exd6 Nf5+ and 31... Nxd6 - +) 30... dxe5 winning a pawn. However, 31.fxe5 Qxe5+ 32.Qxe5 Rxe5 33.d6 Rd1 34.Bb5 looks rather complex.
Another idea revolves around Nf4+ but doesn't seem to work: 29... Rb2 30.Qxb2 Nxe3 31.Bd3.
The knight can reach f5 via h6 but White still has Bd3.
Another option is to destroy the white center and try and take advantage of the defenseless bishop on c4 with 29... Nxe5 30.fxe5 Qxe5+:
A) 31.Kf2 Rb2 wins the queen (32.Qxb2 Qxe3+ 33.Kf1 Qe1#).
B) 31.Kf3 Qe4+ 32.Ke2 (32.Kf2 as above) 32... Qxc4+ - + [r+p vs B].
C) 31.Kh4 Qxe3 - + [r+p vs B].
D) 31.Bf4 h4+
D.1) 32.Kg4 Qh5#.
D.2) 32.Kxh4 g5+ 33.Bxg5 Qe4+ 34.Qf4 Qxf4+ 35.Bxf4 Re4 36.Kg3 Rxc4 37.Bxd6 Rxc3 with the better ending.
I'm not sure but I'd play 29... Nxe5.
|Jan-12-18|| ||wtpy: Didnt see 32..Rb2. Hard puzzle, well-played game.|
|Jan-12-18|| ||geniokov: I am considering 29..Rd1,quiet move but gives venomious exchange combination with ..Nxe3 then follows ..Nxc4,..h4+ which has an effect on the current position.|
|Jan-25-18|| ||7he5haman: <<goodevans: <7he5haman: Is Black REALLY winning after 34.Ke3 Rxg2 35.Kf3? Or 34.Ke1 Rxg2 35.Kf1?>
After either <34.Ke3> or <34.Ke1> white has just pinned his own Be5 so black's response should be to simply move his R out of harm's way with <34...Rb2> knowing he can pick off white's B at leisure.>>|
Thanks! Missed that :)