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Solomon Slonim vs Nikolai Riumin
Moscow-ch (1931), Moscow URS
Scotch Game: Schmidt Variation (C45)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Given 54 times; par: 19 [what's this?]

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Kibitzer's Corner
Feb-24-09  shaqcosteau: Way to destroy a variation.
Mar-04-12  backrank: Very instructive how Black deprives White of the flight square d2 by 19. ... Re2!!
Dec-02-14  SpiritedReposte: ...Re2! a definite puzzle move.
Mar-16-15
Premium Chessgames Member
  tpstar: 13 ... Ba3! 14. Qxe7 (14. bxa3? Qxa3#) Bxb2+ 15. Kb1 Bxc3+ 16. Kc1 Bb2+ 17. Kb1 Ba3+ 18. Ka1 Bxe7 wins a piece.

Black to Play and Win after 19. Be1.

Dec-18-21  Brenin: The start is obvious, 14 ... Bxg2+ 15 Nxg2 (15 Kb1 Bc3+ and 16 ... Qa3) Qa3 16 Qe5 Re8 17 Qc3 (17 Qd4 c5 18 Qc3 is similar) Qxa2 18 Be1 (creating an escape for the K), and now one has to see 18 ... Re2, blocking the escape, 19 Bxe2 Ne4 reblocking the escape and hitting the Q. White can avoid Qa1 mate only by moving the N, and this allows Rb1 mate.
Dec-18-21  Brenin: I love the way 14 Qxe7 loses the Knight to a Bishop windmill 14 ... Bxb2+ 15 Kb1 Bxc3+ 16 Kc1 Bb2+ 17 Kb1 Ba3+ 18 Ka1 Bxe7. Today's POTD starts too late for this little gem.
Dec-18-21
Premium Chessgames Member
  raymondhow: I got the first five moves, then wanted to play 19...Bg4. The engine says that wins, but it's not as crushing as 19...Re2 which is quite a pretty move. Since I didn't find that, only give myself half credit.
Dec-18-21
Premium Chessgames Member
  al wazir: <tpstar: 13 ... Ba3! 14. Qxe7 (14. bxa3? Qxa3#) Bxb2+ 15. Kb1 Bxc3+ 16. Kc1 Bb2+ 17. Kb1 Ba3+ 18. Ka1 Bxe7 wins a piece.>

White can play 18. Bb4. Now the only way to capture the white ♕ is by giving up the exchange, e.g., 18...Rxb4+ 19. Qxb4 Bxb4 20. dxc6.

Material is roughly even: ♖ + ♙ vs. ♗ + ♘.

Dec-18-21  mel gibson: of course I saw either the Bishop or the Rook
taking the pawn on b2 but I missed seeing how it would win.

Stockfish 14.1 says:

14... Bxb2+

(14. .. Bxb2+ (♗a3xb2+ ♘a4xb2 ♕e7-a3 ♗d2-c3 ♕a3xc3 ♕e2-e5 ♕c3-b4 d5xc6 ♖f8-e8 ♕e5-d4 ♕b4xd4 ♗d3xh7+ ♔g8xh7 ♖d1xd4 ♖e8-e2 ♖d4-d8 ♘f6-e4 ♖d8-e8 ♘e4-c3 ♖e8xe2 ♘c3xe2+ ♔c1-d2 ♘e2xf4 ♖h1-f1 ♖b8xb2 ♖f1xf4 ♔h7-g6 ♖f4-a4 a7-a6 ♖a4-a3 ♖b2-b5 ♔d2-c3 ♖b5-b6 ♔c3-d4 ♗c8-e6 c2-c4 ♖b6xc6 c4-c5 ♔g6-h7 ♖a3-e3 g7-g6 g2-g4 ♔h7-g7 ♖e3xe6 ♖c6xe6 g4-g5 ♖e6-e2 a2-a4 ♖e2-e1 h2-h4) +7.38/42 415)

score for Black +7.38 depth 42.

Dec-18-21  JohnBoy: Yeah� the move is 19�Re2
Dec-18-21  mel gibson: <Dec-18-21 JohnBoy: Yeah� the move is 19�Re2>

Both lines had to be investigated.
I missed this one today.

Dec-18-21  stacase: 14...Bxb2+ and the big fat check follow-up from her Royal Ugliness getting her self out of hock was as obvious as the north end of a south bound goat. The rest not so much, but how far ahead are we supposed to see?
Dec-18-21  phantasmagorium: This game appears to be a duplicate of S Slonim vs Riumin, 1931 - I do not know which one has the correct date.
Dec-18-21  phantasmagorium: <stacase> depends. I would guess that if one has an instict to attack, merely seeing 14... Bxb2+ is good enough. However, if the focus is on solving the problem, maybe one would argue that 19... Re2 (in a sense, the winning shot) is not an easy move to see.

Back in my early chesss days, I found this game in two Indonesian chess book. One was, IIRC, "Menang Cepat dan Indah" (Winning Quickly and Beautifully) by Sam Ayal. IIRC, the diagram given there was after 19. Be1 (instead of after 14. Na4), and he gave 19... Re2!! [yup, two exclamation marks] 20. Bxe2 Ne4! "dan mat berikutnya" (and mate next move). I guess Ayal wanted to suggest that 19... Re2 (rather than 14... Bxb2+) was the one hard move to see, without which Black would not have won.

On the other hand, in the other book, by Djamil Djamal MN ("Perangkap dan Muslihat Catur - Jilid I Permainan Terbuka" - Chess Traps and Tricks, Volume I, Open Games), the position given was after 14. Na4, but he said that to become a master, one has to be able to solve this problem. [again, he said solve, not merely find the first move!]

So, I am sorry for pontificating, but some people might say that for this problem, the first move is easy to see, but really solving it is not that easy.

Dec-18-21  Brenin: <al wazir>: After 14 Qxe7 Bxb2+ 15 Kb1 Bxc3+ 16 Kc1 Bb2+ 17 Kb1 Ba3+ 18 Bb4 Rxb4+ 19 Qxb4 Bxb4 20 dxc6, Black has 2B vs R+P, but the 2B give him a clear advantage, e.g. 20 ... Bg4 21 Rdf1 Rb8. And if 19 Ka1 instead, then 19 ... Re8 works for Black. The prequel to this POTD is as interesting as the puzzle itself.
Dec-18-21
Premium Chessgames Member
  agb2002: Black is one pawn down.

White threatens Qxe7 and dxc6.

A quick scan finds lines like 14... Bxb2+ 15.Nxb2 (15.Kb1 Bd4+ wins) 15... Qa3 16.Bc3 Qxc3 17.Nc4 (17.Na4 Qa3+ wins the knight) 17... cxd5 with attack and an extra pawn.

Or 16.Rdf1 (to block an eventual Bg4 with Rf3) 16... Rxb2 17.Be3 (17.Kd1 Rb1+ 18.Bc1 Qxc1#) 17... Rxa2+ 18.Kd1 Ra1+ 19.Kd2 Qb4+ 20.c3 Ra2+ 21.Bc2 Ne4+ is winning.

Or 18.Kd2 Qb4+ 19.Kd1 Re8 20.Qf2 Ra1+ 21.Bc1 (21.Ke2 Bg4+ wins) 21... Bg4+ 22.Be2 Bxe2+ wins decisive material.

I'd play 14... Bxb2+.

Dec-18-21  nalinw: A Monday problem up to Black's Qa3 - but then to see the Qe5 defense and the amazing moves after that make it Saturday for sure - or even Sunday.

Fantastic puzzle on many levels

Dec-18-21
Premium Chessgames Member
  chrisowen: Roque vian ooh Bxb2+ gotcha arrive i ointment aint i sign roque vian ooh macked it i v daks duffles pow it wovern baroque juicy i v oo nut line legin i elgin it map liked it c u tingle for z it wey i v missionary band it wagon i v jumpy embibe enough bubbles c axiom jock i v aorta it josh hubble a v cog mage it game hud v i ad hoc v jericho del ray eg oo it wiggle goo a no ado did it i v a bluff frazzled it difficult off eh i abridge axled it key it no and evict host ace v it ha vehicle sets right z go man c mud c fire v lab c odd finger it i v man c nod fells bucked it i v feed it i v figures oo jo mind mod v c it fogs vint v cold dosa dome it bods i v it disc it seed it v hi chug ji oo v condiment i vent i miffed nack crocked it dole it fast hip jack i let u car mud c mend i v off i evicts na dock band bbc ohm nom nom i look no hands musk deer no back rut ski pawns to miss ache it o v i gone cc bead vant me calm stairway to v heaven six scrapes off rusty c v edit as jig inch likes theres no tomorrow v i van fitzharris knight tnt lion or smurf no a kid bus stop run of the mill v oil akin no uniform bet Bxb2+ daffy;
Dec-18-21  Stefan Lukke: Slonim impresses with calculation here. Queen and knight combine so beautifully too. A really sweet puzzle and decent game.
Dec-18-21  Nosnibor: <Stefan Lukke> You surely mean Riumin impresses.
Dec-18-21
Premium Chessgames Member
  chrisowen: I love this Bxb2+ ask no?
Dec-18-21
Premium Chessgames Member
  Jimfromprovidence: It took me a while to understand why black could not play ...Qxa2 on either moves 16 or 17. I found out that it's because black has to drive the white queen to c3 first to avoid Bc3.

As an example, if after 17 Qd4 black plays 17...Qxa2, then white has Bc3 and the knight on b2 gets more protection.


click for larger view

Now white is winning.

Dec-18-21  Stefan Lukke: <nosbibur> indeed I do 😄
Dec-19-21  stacase: <phantasmagorium: <stacase> ...maybe one would argue that 19... Re2 (in a sense, the winning shot) is not an easy move to see.>

Well no "kidding" Sherlock I darn sure did some head scratching, to no avail, when I saw that third move. Thanks for the reply (-:

Dec-19-21  phantasmagorium: <stacase> I personally found that move very hard to see myself.

Thank for your patience. I sometimes fear I am a bit too blunt in making comments.

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