[Retros] Die Schwalbe Heft 235, february 2009

Joost de Heer joost at sanguis.xs4all.nl
Tue Mar 3 15:41:39 EST 2009

14001 - Roberto Osorio, Jorge Joaquin Lois
2b3nr/1ppp3p/1b6/5p2/3k4/4qr2/PPPPPpPP/RNBQKBNR (15+13)
+---+---+---+---+---+---+---+---+

| | . |*B | . | | . |*N |*R |

+---+---+---+---+---+---+---+---+

| . |*P |*P |*P | . | | . |*P |

+---+---+---+---+---+---+---+---+

| |*B | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . |*P | . | |

+---+---+---+---+---+---+---+---+

| | . | |*K | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | |*Q |*R | . | |

+---+---+---+---+---+---+---+---+

| P | P | P | P | P |*P | P | P |

+---+---+---+---+---+---+---+---+

| R | N | B | Q | K | B | N | R |

+---+---+---+---+---+---+---+---+
SPG 15.0

14002 - Valeri Liskovets
3N3k/2p1pQ2/8/8/8/2K5/8/8 (3+3)
+---+---+---+---+---+---+---+---+

| | . | | N | | . | |*K |

+---+---+---+---+---+---+---+---+

| . | |*P | |*P | Q | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | K | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+
#4 Post factum, retrovolages

14003 - Klaus Wenda
3Q4/1B1N4/3Nkb1r/8/4P1b1/4R3/8/R1rqK3 (8+6)
+---+---+---+---+---+---+---+---+

| | . | | Q | | . | | . |

+---+---+---+---+---+---+---+---+

| . | B | . | N | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | N |*K |*B | |*R |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | P | . |*B | . |

+---+---+---+---+---+---+---+---+

| . | | . | | R | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | |[.]| | . |

+---+---+---+---+---+---+---+---+

| R | |*R |*Q | K | | . | |

+---+---+---+---+---+---+---+---+
-4 & s#1, Proca retractor, anticirce, magic square f2

14004 - Bernd Gräfrath
r1bq1r2/ppppp1kp/5n1b/5K2/6n1/4Q3/PPPPPP1P/8 (9+14)
+---+---+---+---+---+---+---+---+

|*R . |*B *Q | *R | . |

+ + + + +

|*P *P |*P *P |*P |*K *P |

+---+---+---+---+---+---+---+---+

| . | . | *N | *B |

+ + + + +

| . | . | . K | . |

+---+---+---+---+---+---+---+---+

| . | . | . |*N . |

+ + + + +

| . | . | Q | . |

+---+---+---+---+---+---+---+---+

| P P | P P | P P | P |

+ + + + +

| . | . | . | . |

+---+---+---+---+---+---+---+---+
Add 2 pawns for #1, Grid chess

14005 - Bernd Gräfrath
r1bqkb1r/pppppppp/8/8/5P2/5N2/PPP3PP/RNB1QRK1 (13+14)
+---+---+---+---+---+---+---+---+

|*R | . |*B |*Q |*K |*B | |*R |

+---+---+---+---+---+---+---+---+

|*P |*P |*P |*P |*P |*P |*P |*P |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | P | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | N | . | |

+---+---+---+---+---+---+---+---+

| P | P | P | . | | . | P | P |

+---+---+---+---+---+---+---+---+

| R | N | B | | Q | R | K | |

+---+---+---+---+---+---+---+---+
SPG 9.5 Bichrom chess

14006 - Andreas Witt
Dedicated to Herbert Ahues' birthday
8/2P2PP1/8/3R4/8/8/8/8 (4+0)
+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | P | | . | P | P | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | R | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+
White plays 6 moves so that he has a maximal possible moves in the
resulting position. How many moves is that?

14007 - Andreas Witt
Dedicated to Herbert Ahues' birthday
8/8/8/P6p/2P4k/K3p3/8/8 (3+3)
+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| P | | . | | . | | . |*P |

+---+---+---+---+---+---+---+---+

| | . | P | . | | . | |*K |

+---+---+---+---+---+---+---+---+

| K | | . | |*P | | . | |

+---+---+---+---+---+---+---+---+

| | . | | . | | . | | . |

+---+---+---+---+---+---+---+---+

| . | | . | | . | | . | |

+---+---+---+---+---+---+---+---+
White and black play 2 moves (white starts). How many possible move
combinations are there?

14008 - Alain Brobecker
Which unique monochromatic proofgame ends with 5...BxS# ?

14009 - Claudius Gottstein
Construct a position with only white rooks, in which exactly 45 squares
are observed. How many positions are there?

SOLUTIONS HEFT 232
13819 - A. Jarosh
r1bskbr1/pppppppN/3N1n1p/8/8/P6P/RPPPPPPR/2BK1B2 (15+15)
Parity shows white has the move, but black is in check.

13820 - G. Sobrecases
MISPRINT: -wSg1
a) 1. d4 e5 2. d5 Bc5 3. d6 Nc6 4. dxc7 d5 5. Nh3 Bf5 6. c8=N Qb6 7. Ne7
Qb5 8. Ng6 O-O-O 9. Ne7+ Kb8 10. Nc8 Rxc8 11. Nf4 Nd8 12. Nd3
b) 1. d4 e5 2. d5 Bc5 3. d6 Nc6 4. dxc7 d5 5. Nc3 Bf5 6. c8=N Qa5 7. Nb6
Qb5 8. Nd7 O-O-O 9. Nb8 Kxb8 10. Nf3 Rc8 11. Nd2 Nd8 12. Ndb1

13821 - R. Osorio, J.J. Lois
1. h4 c5 2. Rh3 Qb6 3. Rb3 Qxb3 4. a3 Qa2 5. Nc3 Qb1 6. Nh3 Qxc1 7. Qxc1
d6 8. Qb1 Nd7 9. Qa2 Ndf6 10. O-O-O Kd7 11. Qa1 Ke6 12. Kb1 Kf5 13. Ka2
Kg4 14. Kb3 Bf5 15. Qa2 Rc8 16. Ra1 Rc6 17. Qb1 Rb6+ 18. Ka2 Rb3 19. Qd1
b6 20. Nb1 Rxh3 21. g3

13822 - M. Caillaud
1. d4 Nc6 2. d5 Ne5 3. Qd4 Nf3+ 4. gxf3 g5 5. Bh3 g4 6. Bg5 g3 7. Bg4 g2
8. Nh3 g1=N 9. f4 Nf3+ 10. Kd1 Ne5 11. d6 Nc6 12. dxc7 Nb8 13. cxb8=N
Qb6 14. Na6 bxa6 15. c4 Bb7 16. c5 O-O-O 17. c6 Ba8 18. c7 Kb7 19. c8=R
h6 20. Rc6 Rb8 21. Rf6 exf6

13823 - S. Baier
1. d4 a5 2. Nd2 a4 3. Nb3 axb3 4. Qd2 Ra4 5. Qh6 Rb4 6. a4 gxh6 7. a5 h5
8. a6 Bh6 9. a7 Be3 10. Ra6 Nh6 11. Re6 dxe6 12. a8=R Qd5 13. Ra1 Qa5
14. d5 Kd7 15. d6 Kc6 16. d7 Ba7 17. d8=Q Nd7 18. g4 Nb6 19. Qd1 Bd7 20.
g5 Ra8 21. g6 Bb8 22. g7 Ra7 23. g8=N Na8 24. Nf6 Ng8 25. Ne4 f6 26. Nd2
Kd5 27. Nb1+

13824 - B. Gräfrath
a) Only 2 king moves are necessary: 1. g3 Nf6 2. Nh3 Nd5 3. Ng1 Nf4 4.
gxf4 h5 5. Nh3 Rh6 6. Ng1 Rg6 7. Nh3 Rg1 8. Nxg1 b5 9. f5 b4 10. Nh3 Nc6
11. Nf4 h4 12. e3 Nb8 13. Ng2 h3 14. f6 hxg2 15. fxg7 gxf1=K 16. gxf8=K
Kxe1 17. Kxe8
b) 1. Nf3 b5 2. e3 b4 3. Ke2 h5 4. Ne1 h4 5. Kf3 Rh5 6. Kg4 Nh6 7. Kxh5
h3 8. Kxh6 hxg2 9. Kxg7 gxf1=K 10. Kxf8 Kxe1 11. Kxe8

13825 - D. Petrovic
1. Qf1-g1 h5xRg4 2. Qe2-f1 h6-h5 3. Qd1-e2 Re2xQd2[Qd1] 4. Qd1-d2 Rd2-e2
5. h5xPg6[Pg7] f7xQg6[Qd1] 6. Se2xPf4[Pf7] h7-h6 7. Sg1-e2 Rd1xSd2[Sg1].
Now the black pawn from h7 must be brought back to b7. The missing black
moves are waiting moves with Rd1.
8. Qh6 9. Qc6xPh6[Ph7] 10. Qa4-c6 11. Qa2-a4 R~-a1 12. Qb1-a2 13. Qd1-b1
g7xPh6[Qd1] 14. Qg6-h6 15. Qc6xPg6[Pg7] 16. Qa4-c6 17. Qa2-a4 18. Qb1-a2
19. Qd1-b1 20. Qe2-d1 Rd1-~ 21. Nb1-d2 Rd2-d1 22. Qd1-e2 f7xSg6 23.
S~-g6 Rd1xQd2[Qd1] .. 26. Se8xPf6[Pf7] .. 30. Sb1 Rd1 31. Q~ Rd2 32. Qd1
Re2xQd2[Qd1] 33. Qd1 Rd2xSe2[Sb1] 34. Sg1 exSf6[Sg1] 35. Se8
Rd1xQd2[Qd1] 38. Sc7xPe6 41. Sb1 d7xSe6[Sb1] 45. Sb5xPd6[Pd7] 47. Sb1
Rd1 48. Q~ Rd2 49. Qd1 Re2xQd2[Qd1] 50. Qd1 Rd2xSe2[Sb1] 51. Sg1
c7xQd6[Qd1] 52. Qc6 Rd1xSd2[Sg1] 53. Qa4xPc6[c7] 56. Qd1 b7xQc6[Qd1] 57.
a3xPb4[Pb7] etc.

13826 - G. Weeth
-1. Kc6-d5 Sd7-e5 -2. Sb6-d7[=bS] Rd7-d1 -3. g5-g6 Sd6-b5 -4.
Rd8-d7[=bR] Sc8-d6 -5. d7-d8=R Sd6-c8 (e6xXd5[wPd7] illegal pawn
structure on the e-file!) -6. Kc5-c6 c4xd3ep[wPd7] -7. d2-d4 Be1-f2 -8.
e6xSd7[wPd2] Kb8-a7 -9. Kb4-c5 ~ -10. Sc5-d7[=bS] and 1. a7#

13827 - K. Wenda
-1. Rd1-e1! Ra1-c1 -2. Rc1-d1 (Rc1-c2?) Rb1-a1 -3. Bf1-e2 Ra1-b1 -4.
f7xGe8=B[Bf1] & 1. f8=G#
-1... Rb1-c1 -2. Rc1-c2! (Rc1-d1?) Ra1-b1 -3. Rh1-d1 Rb1-a1 -4.
f7xGe8=R[Rh1] & 1. f8=G#

13828 - M. Richter, T. Brand
-1. Kh2xBh1 S~xBf3

13829 - W. Keym
8/8/8/8/8/8/PPkPPKPP/8
The position 8/ppkppKpp/8/8/8/8/8/8 isn't a cook because the distance
e1-f7 is smaller than c2-e8.

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