40.
Incorrect studies?
Second Page.
Here the second page with a list of studies which are possibly incorrect and most were not yet discovered that way according to the Harold van der Heijden database III 2005.
If in that database in the source of a study an "@" is found, it means that an incorrectness is already found.
The studies shown here are not yet that way.
You are invited to prove me wrong, or correct the study in some way.
Many of them still have beautiful ideas in there!
Please react by using the guestbook
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40.
Aloni,H 1959 [=0012.05a3e4] Position after 1... Ke3
Solution: 1. Nc3+ Kf5 (1... Kd3 2. Nxe2) 2. Nh4+ (2. Nxe2 fxe2 3.
Nh4+ Kxe5 4. Kxa2 e1=N) 2... Kxe5 3. Nxf3+ Kf4 4. Nxe2+ Kxf3 5. Nd4+ Ke3 6.
Nc2+ Kd2 7. Na1 (7. Kb2 c3+ 8. Kb3 Kc1 9. Kxc3 b4+ 10. Kb3 Kb1 11. Na1
Kxa1 12. Kc2 b3+) 7... Kc3 8. Kxa2 b4 9. Nb3 cxb3+ 10. Ka1 (10. Kb1
b2 11. Ka2 b1=Q+ 12. Kxb1 Kb3) 10... b2+ 11. Kb1 Kb3 1/2-1/2
But sadly at move one black can play 1... Ke3! 2.Nxe2 fxe2 -+
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39.
Aloni,H [=0033.42e8c6] 2000 Position after 2... Kc7!?
Solution: 1. b4 Nb7 2. c4 Bd7+ 3. Kxe7 Kc7 4. d4 Nd8
(4...Ba4 5. d5 exd5 6. cxd5 Nd8 7.
d6+ Kc8 8. e6 Bb5 9. Kf6 Nb7 10. Ke7 Kb8
11. d7 Kc7 12. Kf8 Nd6 13. Ke7) 5. b5 Kc8 (5... Nb7 6. b6+ Kc8 7.
d5 Nc5
8. Kd6 exd5 9. cxd5 Nb7+ 10. Ke7) 6. Kd6 Nf7+ 7. Ke7 Nd8 8. Kd6 1/2-1/2
Better seems: 2... Kc7!? for instance 3. d4 Nd8 4. b5 Bb7 5. Kxe7 Be4 6. b6+ Kc8
7.
Kd6 Bf5 (or Bd3) 8. d5 Nf7+ 9. Ke7 Nxe5 10. dxe6 Nxc4 and black wins
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Small note:
38. R. Missiaen [+0016.10g6h3] is already cooked by JN (means John Nunn?),
but an even faster cook starts with: 2. ... Ncd3 3.Bxd3 Nxd3 4.Kf5 Nc5 5.f7 Nd7=
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Three studies from A.Foguelman cooked?
37.
[+0444.33c1d7] 1986 Position after 4... Bxf4+
Author-solution: 1. Be3 Ne2+ 2. Kd2
Ng3 3. Bc5 Bc7 (3... Be7 4. Ne5+ Ke8 5. Ra8+ Bd8 6. Nc6 Rd7+
7. Ke1 f5 8. Bb6) 4. Bf2 Nh1 5. Nc5+ Kc8 6. Nxb7 Kxb7 7. Ra7+ Kb8 8. Rxc7
Kxc7 9. Be1 1-0
But what if: 4... Bxf4+ 5. Nxf4 Rb2+
6. Ke1 Rb1+ 7. Kd2 Rb2+ 8. Ke3 Nf5+
36.
[+0013.43e8f1] 1987 Position after 4...Kf1
Author-solution: 1. Bg4 Kg2 (1... Kg1
2. Bxh3 Kxh2 3. Bc8 Na6 4. Bxb7 Nc5 5. b4 Nxb7 6. Kd7) 2.
Bc8 Kxh2 3. Bxb7 Kg1 4. b4 h2 5. b5 Kf2 6. Kd8
Ke2 7. Be4 h1=Q 8. Bxh1 Kxd3 9. Kc8 Kc4 10. Bc6 1-0
But what if: 4... Kf1!? 5. b5 Ke2 6. Be4 Kxd2 7. Kd8 Kc3 8. Kc7 Kb4 9. b6 Na6+ 10. Kc6 Kc3. How can white win?
35.
Draw. [=0041.02f5c2] 1984
Author-solution: 1. Be3! Bxe3 2. Ne5 h5 (2... d2 3. Nc4! d1=N 4. Nxe3+ Nxe3+ 5. Kg5)
3. Ke4 d2 4. Nc4 Bh6 5. Nxd2 Kxd2 6. Kf3 1/2-1/2
But why not in the subvariation playing on with: 5 .... Nd5 6. Kh6 Nf6 7. Kg5 h5 and black will win.
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Marcel van Herck did send me the
message that in the dutch magazine ("Schaaknieuws" 11, 2005-06-04) the following
study by Jan Van Reek was to be found incorrect. Author solution: 1. Ra3 d2 2.
Rd3 Nxd3 3. Ne4 d1=N! 4. Ke6 Nd8+ 5. Kd7 Nb7 6. Kc6
Na5+ 7. Kb5 Nb3 8. Nc3+ Nxc3+ 9. Kc4 Kc2 1/2-1/2
At move 4. Black plays Nh6!! and according to the Nalimov Endgame tables black
wins in 39 more moves.
34.
Jan van Reek, 1987 [=0107.01d5b1] Position after 4. ... Nh6!
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33.
Herbstmann,A. 1926 [=0341.11h6c6]
White plays and makes a draw.
Author-solution: 1. g8=Q Bxg8 2. Nxg2
Rh3+ 3. Kg7 Rg3+ 4. Kh8 Rxg2 5. Bb7+
Kxb7 1/2-1/2
But what after 4. ... Kb6!
After 5. Bf1 Bb3 black wins. i.e. 6.Kh7 Rf3 7.Be2 Rf2 or 6.Nh4 Bc2 7.Ng2 Be4
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32.
Kasparian, G. 1957 [=0314.11h4f3]
White plays and makes a draw.
Author-solution: 1. d6 Nc5 2. Ne5+ Ke4 3. d7 Ne6 4. Ng4 ! (4.
Nc6 ? Rc2 !) (4. Nf7 ? Rh2+ 5. Kg4 Rg2+ 6. Kh4 Rg7 ! 7. Ng5+ Rxg5 8. d8=Q
Nxd8 9. Kxg5 Ne6+) 4... Rd2 (4... Rf1 5. Kh5 Rh1+ 6. Kg6 Rh8 7. Nf6+) 5. d8=Q
Nxd8 6. Ba5 Rd4 7. Bb6 Rd6 8. Bc7 Rd2 (8... Rg6 9. Kh5 ! (9. Bxd8? Kf5 10.
Nf6 f3 11. Nd5 f2 12. Ne3+ Kf4)) 9. Ba5 1/2-1/2
But Helmut Froeyman found: 3... Rh2+ And now on 4. Kg4 Ne6 and on 4. Kg5
Rd2 5. d8=N Na6 6.
Ba5 Rd5 7. Ndc6 Nb8 8. Kg4 Nxc6 9. Nxc6 Rc5 10. Bd2 f3 and black wins!
After 3... Rh2+! After 10. ... f3 -+
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31.
Simkovitch, F. [=0372.66b4e8] year?
White plays and makes a draw.
Author-solution:
1. f7+ Kf8 2. Bb6 Rxb6 3. Kc5 Rxb5+
(3... Ra6 4. Nc7 Bb7 5. Nxa6 Bxa6 6. Kb6 Bc4 7. Kc5 Be6 8. Kd6 Bc8 9. Kc7)
4. Kxc6 Ra5 5. Kb6 Ra8 6. Kb7 Rd8 7. Kc7 Rd5 8. Kc6 1/2-1/2
But black may try: 5... Bc3!? and if white captures the pawns get very strong.
After 5... Bc3!?
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30.
Marwitz, J. 1939 [=0062.21h4f5]
White plays and makes a draw.
Author-solution: 1. Nc3 Bxf2+ 2. Kh3 Bc6 3. d3 Bd4 4. Ne4 Bxe4 5. dxe4+ Kf4!
6. e5! Bxe5 (6... Ke3 7. Nf6) 7. Ng5! Kxg5 (7... f2 8. Kg2) 1/2-1/2
Black should try: 2... Bd7 3. Kh2 Bd4 4. Kg3 f2 5. Kg2 Bc6+ 6. Kf1 Bb7 and wins?
After 2... Bd7
Harold van der Heijden mentions: Cook found by H.Grondijs, Neverending, volume B, page 82, 2003.
So this is in his database III already.
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29.
Wijnans, A. 1936 [=0000.12g5f3]
White plays and makes a draw.
Author-solution: 1. Kf5 Ke3 2. Ke5
(2. Ke6 ? Kd4 3. a4 Kc4 4. Kxe7 Kb4) 2... Kd3 3. Kd5 Kc3 4.
Kc5 (4. a4 ? Kb4 5. Kc6 Kxa4) 4... e5 5. Kd5 (5. a4 ? e4 6. a5 e3 7. a6 e2 8.
a7 e1=Q 9. a8=Q Qe3+ 10. Kb5 Qb6+ 11. Ka4 Qb4#) 5... Kb4 6. Kxe5 c5 7.
Kd5 (7. Ke4 !) 7... c4 8. Kd4 c3 9. Kd3 1/2-1/2
But black tries: 5... c6+ 6. Kxe5 c5 7. a4 Kb4 8. Kd5 c4 9. a5 c3 10. a6 c2 11. a7 c1=Q 12. a8=Q Qh1+ -+
After 5... c6+!
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27.
Rusinek, J. 1971. [=0326.00g4b7]
White draws.
Author-solution: 1. Bf3 Nf2+ 2. Kg3 Nh1+ 3. Kg2 Kc6 4. Ba3
Rh8 5. Bb2 Rb8 6. Ba3 Rb1
7. Bf8 Ra1 8. Bg7 Ra7 9. Bf8 Rh7 10. Ba3 Rh8 11. Bb2 1/2-1/2
But what if 1. ... Rf7! 2.Bxe4 Rf4+ or 2. Bc1 Nec3 hard to draw this...
After 1. ... Rf7!?
From Tantale, Seen guestbook: maybe just move the black rook from h7 to h6
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25.
Balemans, T. 1975. [=0034.21a1c2]
White plays and draws.
Author-solution: 1. Ng6 (1. Nf7 ? Kb3 2. h6 Nd5+ 3. hxg7 Ne3 4. g8=Q Nc2#)
1... Kb3 2. h6 Bh8 (2... Nd5+ 3. hxg7 Nb4 4.g8=Q+) 3. Ne5 Ka3 (3... Ne4) 4. Nc4+
Kb4 5. Nd2 (5. Ne5 ? Kb3) (5. Na3 ? Kb3) (5. Nb2 ? Nd5 6. Kxa2 Nc3+ 7. Ka1 Na4)
5... Ne4+ (5... Ka3 6. Nc4+ Kb3 7. Ne5)
6. Kxa2 Nxd2 1/2-1/2
But there is a forced win for black: 1... Nd5+ 2. Ne5 Bxe5+ 3. Kxa2 Bb2 4. h8=Q Nb4#
May be the author knew, because he made in 1993 a look-alike: [=0034.21a1c4]
Solution: 1. Ng6 ! Kb3 2. h6 Bh8 ! 3. Ne5 ! Ka3 4. Nc4+ Kb4 ! 5. Nd2 ! (5. Ne5 ?
Kb3) 5... Ne4+ 6. Kxa2 Nxd2 1/2-1/2
After 4. ... Nb4 This study looks better!
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22.
Afek, Y. 1978. [=0340.53a7c8] 1.p wc02
White plays and draws!?
Author-solution: 1. Bh3+ e6 (1... Rd7
2. dxe7) 2. Bxe6+ Rd7 3. d5 Bxd5 (3... Be4 4. Bxd7+ Kxd7
5. Kxb7 Bxg6 6. Ka7 Be4 7. b6 g5 8. b7) 4. Bxd5 b6+ (4... Rxd6 5. Bxb7+ Kc7
6.
Be4) 5. Bb7+ (5. Kxb6 ? Rxd6+ 6. Ka7 Rxg6) 5... Rxb7+ (5... Kd8 6. Kxb6
Rxd6+
7. Ka7 Kc7 (7... Rxg6 8. b6) 8. Be4) 6. Ka8 Rb8+ 7. Ka7 Rb7+ 8. Ka8 1/2-1/2
The underlined variation brings up some doubt: after 6... Rf6 white is in a sort of zugzwang.
If. 7. Bc6 Rf4; If 7. Bb1 Rb6 8.Bd3 Rb8 9.Be2 Rb7+ 10.Ka6 Rb6+ 11. Ka5 Rxg6 and black has probably a winning position.
Who disagrees?
After 6. ... Rf6.
May be adding a white pawn at g5, keeps its correct?
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Peter Boll.