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Phénix

Phénix, No. 109, July-August 2002 - SOLUTIONS

4039 - T. Le Gleuher
Phenix 109, July-August 2002

Author's solution: 1.Nf3 e5 2.Nxe5 Bd6 3.Nxd7 Bxh2 4.Nb6 axb6 5.Rxh2 Rxa2 6.Rxh7 Rxb2 7.Rxg7 Rxb1 8.Rxg8+ Rxg8 9.Rxb1 Rxg2 10.Rxb6 Rxf2 11.Rxb7 Rxf1+ 12.Kxf1 Qxd2 13.Rxc7 Qxc2 14.Rxc8+ Qxc8 15.Qd8+ Qxd8 16.Ke1

Cook by Mario Richter: 1.Nf3 e5 2.Nxe5 Bd6 3.Nxd7 Bxh2 4.f4 Bxf4 5.Rxh7 Bxd2+ 6.Bxd2 Bxd7 7.a4 Bxa4 8.Rxg7 Bxc2 9.Rxg8+ Rxg8 10.Rxa7 Rxg2 11.Bxg2 Rxa7 12.Bxb7 Rxb7 13.Qxc2 Rxb2 14.Qxc7 Rxb1+ 15.Qc1 Rxc1+ 16.Bxc1

(Longest “at home” PCPJ)


4040 - J.M. Chorein & M. Caillaud
Phenix 109, July-August 2002

The bPa can’t neither be captured as Pawn on a7 or b6 (Bb8 illegal), nor on c5 or c3 (with 7 wP’s captures and 6 bP’s captures, the wPh can’t vanish).

He has been promoted, but not before a2?#8212;Fb3, and after f2?#8212;e3?#8212;d4?#8212;c5?#8212;b6?#8212;a7 and b7-b6. The promoted piece has to be captured with d2?#8212;c3.

a2?#8212;Bb3 occurred before b3-b4, wBb1 and b2-b3.

The moves b2-b3 and d2?#8212;c3 took place after Bb8 : this one, can’t be the white Queen Bishop and come from the white promoted pawn h.

The black sequences are : f7?#8212;e6?#8212;d5 and h7?#8212;g6?#8212;h5 (all on white squares), g7?#8212;f6 (before moving the wQB : capture of the bKB with the wPf and exit of the promoted Bishop from h8 to b8). The last capture is f6?#8212;Be5.

The wBc1 has been captured on e5.


4041 - J.M. Chorein & M. Caillaud
Phenix 109, July-August 2002

-1.Rb7?#8212;b8#? Gives a blocked position
-1.a7?#8212;Tb8#? Gives a black retro-pat

Last moves are:

-1.a7?#8212;Nb8=R# Nc6-b8 -2.Qa6-c8+

Proof play:

Rh1 to f6, g7?#8212;Rf6, g7-g8=B
Bf1 to g6, h7?#8212;Bg6, h7-h8=B, bPa~, Bh8 to b8
f2?#8212;e3?#8212;d4?#8212;c5?#8212;b6?#8212;a7 (bQ+2bR+bN)
b7-b6, Bc8 to b3, a2?#8212;Bb3-b4
Ra1 to e6, f7?#8212;Re6, Bg8-f7-e8
a2-a1=N, Na1 goes out via b3
b2-b3, Bc1 to d6, c7?#8212;Bd6
wK to d8, bKb7-a8, Kd8-c8, Bb8-c7-d8, Kc8-c7
Nc6-b8, a7?#8212;Nb8=R‡

wBç1 has been captured on d6
wRa1 has been captured on e6
wRh1 has been captured on f6
wBf1 has been captured on g6


4042 - A. Frolkin & A. Kornilov
Phenix 109, July-August 2002

(This problem was later found to be cooked)

Author solution:

1.Qg8xNg6+! (Qg8xRg6+?) Ne5-g6+ 2.Ng6xRh8+! (Ng6-h8+?) Rh7-h8 3.Qh8-g8 Nc4-e5 4.Qg8-h8 Nd6-c4 5.Qh8-g8 Ne8xPd6 6.Kg8-f8 Ng7-e8 7.Nf8xQg6 Re8-e7 8.d5-d6 Be7-d8 9.d4-d5 Bc5-e7 10.a2-a3 e7-e6

Cooked by Perkonoja:

1.Qg8xRg6+ Rg7-g6 2.Ng6-h8+ Rh7-g7 3.Qh8-g8 a7xQb6 4.Kg8xNf8 Re8-e7 5.Qa6-b6 Be7-d8 6.Qc6-a6 Rb8-e8 7.Qa6-c6 Bc5-e7 8.Qc8-a6 Rb4-b8 9.Qe8-c8 Rb5-b4 10.e7-e8=Q Rb4-b5 11.d6xQe7 Be3-c5 12.d5-d6 Qc5-e7 13.d4-d5 e7-e6 14.Ra6-f6

Correction is:

4042c. Andrey Frolkin & Andrey Kornilov

[n2b1K1N/2pprp2/1p2pRQk/5prb/6p1/1P5P/P1P1PPP1/8]

11+13. Resolve the position

[n2b1K1N/2pprp2/1p2pRQk/5prb/6p1/1P5P/P1P1PPP1/8]

1.Qg8xNg6+ Ne5-g6+ 2.Ng6xRh8+ Rh7-h8 3.Qh8-g8 Nc4-e5 4.Qg8-h8 Nd6-c4 5.Qh8-g8 Ne8xPd6 6.Kg8-f8 Ng7-e8 7.Nf8xQg6 Re8-e7 8.d5-d6 Be7-d8 9.d4-d5 Bc5-e7 10.h2-h3 e7-e6 11.Rc6-f6


4043 - A. Frolkin & A. Kornilov
Phenix 109, July-August 2002

1.a3xNb4 Nc6-b4 2.Re8-e7 Ne7-c6+ 3.a2-a3 Nc6xQe7 4.Qf8-e7 Ne7-c6+ 5.Qg7-f8 Qh8-h7 6.Bh7-g8 Qf8-h8 7.Bg8-h7 h7-h6 8.Qh8-g7 Qh6-f8 9.Qg7-h8

(2 last checks are the same – Cé7-ç6+)


4044 - D. Innocenti
Phenix 109, July-August 2002

See 4305 Phénix 120