A game in which there are moves that are weak and lead to disaster often lead to amusing miniatures. Like masterpieces they can be instructive if we take the trouble lo discover what went wrong on the loser's part and how the winner took advantage of it.
In the following game white played the opening in a credible fashion, but then lost a time with a couple of pointless Q moves before overlooking that black had a Classic Bishop Sacrifie and the game was voer almost before it got started good.
In 1946, Mona May Karff (1908-1998), known for her strong positional play, dominated the American Women’s Championship. No small feat because key players that year included Mary Bain and former champion Gisela Kahn Gresser.
In this tournament two sisters, Kathe and Wally Henschel, were playing and there is an excellent article on them at ChessBase HERE.
Henschel’s biggest mistake was not recognizing that the position was ripe for black to execute a variation of the Classic Bishop Sacrifice (Bxh7+ or ...Bxh2+). The essential criteria for this sacrifice are:
1) the B is sacrificed om h7 (or h2)
2) a N must be available to participate in the attack
3) after the King captures the B the Queen must have a quick way to to join the attack.
4) a Rook lift to the 3rd (or 6th) rank is often essential so it can join the attack.
[Event "U,S, Women's Champ., New York"]
[Site ""]
[Date "1946.11.03"]
[Round "?"]
[White "Wally Henschell"]
[Black "Mona May Karff"]
[Result "0-1"]
[ECO "A47"]
[Annotator "Stockfish 18"]
[PlyCount "32"]
[EventDate "1946.??.??"]
{D05: Colle System} 1. d4 Nf6 2. Nf3 b6 {A flexible, if rather slow, system
that is probably better that it looks.} 3. e3 Bb7 4. Nbd2 e6 5. Bd3 d5 {
This move blocks the B and so it would have been better to challenge the
center with 5...c5!} 6. O-O Nbd7 7. Qe2 {While this is hardly bad
fianchettoing the QB was worth considering.} Ne4 8. c4 (8. Ne5 Nxe5 9. dxe5 Nc5
10. f4 a5 11. Nf3 Qd7 12. Bd2 Nxd3 13. cxd3 a4 14. Be1 {This is a well known
strategy, transferring the bad B to a locayion outside the P-chain by playing
Bh4} Be7 15. Bh4 {with equal chances. Vlasenko,M (2397)-Belikov,V (2554)
Alushta 2008}) 8... Bd6 9. Ne1 {It's hard to know what white's intention was
when playing this move, but it's nor good. Again, fianchettoing the B was a
reasonable idea.} (9. b3 O-O 10. Bb2 a6 11. Rac1 Qe7 12. Ne5 Nxd2 13. Qxd2 Nxe5
14. dxe5 {is equal. Sumar,J-Gonzalez,G Mar del Plata 1967}) (9. cxd5 exd5 10.
Ba6 Qc8 11. Bxb7 Qxb7 12. b3 O-O 13. Bb2 {equals. Harmatosi,J (2252)-Zilahi,G
(2059) Budapest HUN 2006}) 9... O-O 10. Qf3 {This wastes time. She might have
trid blocking the position on the K-sude with 10.f4 nd then placing a N on f3.}
f5 {Very nice, Her plan is to gey the R into position to be able to jpin the
attack.} 11. Qe2 {Apparently white realized the error of her previous move,
but she still has the wrong idea abput defending her position!} Rf6 {White
must now prevent ...Bxh2+!, but is oblivious to the lurkomg danger.} 12. f3 {
[%mdl 8192] This loses outright.} (12. f4 {is the best defense, Black still
has a dangerous attack, but there is no forced win and white certainly has
some defensive resources.} Rh6 {Stockfish 18:} 13. cxd5 Bxd5 14. Nef3 Ndf6 15.
Bb1 b5 16. Bc2 Rb8 17. Bb3 Ng4 18. Qe1 {Black u=is better, but there is no
clear way to gain a really significant advantage.}) 12... Bxh2+ {[%mdl 512]
Obvious and decisive.} 13. Kxh2 (13. Kh1 Bg3 14. fxe4 Rh6+ 15. Kg1 Qh4 {mates})
13... Rh6+ 14. Kg1 Ng3 15. Qd1 Qh4 16. Qc2 {This allows a mate in 2...not that
ot matters,} (16. f4 Qh2+ 17. Kf2 Nf6 {Another piece joins the attack.} 18. c5
{White has to keep the long diagonal closed.} Ng4+ 19. Kf3 Qh5 20. Qc2 Qh4 21.
b4 bxc5 22. bxc5 Nh2+ 23. Kf2 Ngxf1+ {Black is winning. Here us the ebst line..
.} 24. Ke2 Qg4+ 25. Kf2 Qg3+ 26. Ke2 Nxe3 27. Qb3 Nhg4 28. Bb5 c6 29. Nef3 cxb5
30. Kd3 a5 31. Kc3 b4+ 32. Kb2 Nc4+ 33. Kb1 Qxg2 {etc.}) 16... Nh1 {White
resigned because of 17...Qh2#. A nearly perfect game by Kardd!} 0-1


















