[Retros] Phénix 208

[Thierry LE GLEUHER]

Dear retro friendsThere are (to update the retro corner), retro problems from Phenix 208 (juillet-août 2011) issue and solutions.All originals are at: http://phenix-echecs.fr/la%20revue/la_revue.htmlSincerelyThierry LE GLEUHER















Originals Phénix 208 (juil-aôu 2011)

6362. P. WASSONG (after Dmitrij BAIBIKOV)

rnKb4/pBn1p2p/N1r2p2/2PkPP2/3p1p2/P2P4/pP1p3P/qRB2B2

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


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

| . |


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


|*P | B |*N |   |*P |  

| . |*P |


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


| N | . |*R | . |   |*P |  

| . |


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


| . |  

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

|


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


|  

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


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


| P |  

| . | P | . |   | .

|   |


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


|*P | P |   |*P |  

| . |   | P |


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


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


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

(13+15)

Resolve

 

6363. P. WASSONG

qnQRb1B1/rBrN1N1p/n1R5/3k1P2/5p2/2PK1P2/1PPpPp1P/4b3

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


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


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


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


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


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

| . |


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


| . |  

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

|


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


|  

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


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


| . |  

| P | K | . | P | . |  

|


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


|  

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

| P |


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


| . |  

| . |   |*B |   | . |   |


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

(15+12)

last move ?

 

6364. E. PICHOURON

2b2q1Q/3p1rk1/np2pnp1/5prp/1p6/5P2/PP1P2P1/RNB1KBNR

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


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


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


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


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


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


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


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


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


|   |*P |   | . |  

| . |   | . |


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


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


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


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


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


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


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

(13+14)               
(C+ in 19.0)

SPG in 19.5 moves

 

6365. N. DUPONT & R. OSORIO

rn2kbnr/1p1pppp1/B1R4P/2p5/1P2P3/B1N1PK2/1PP1NP2/1Q4R1

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


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


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


| . |*P | . |*P

|*P |*P |*P |   |


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


| B | . | R | .

|   | . |   | P |


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


| . |   |*P |   | . |  

| . |   |


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


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


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


| B |   | N |   | P | K | . |   |


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


|   | P | P | . | N | P |   | . |


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


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

|


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

(15+12)                         (C+)

SPG in 20.5 moves

 

6266. R. OSORIO & J.J. LOIS

1nbqkbn1/p1ppp2Q/p4R2/4B2p/4R3/PPPPKPN1/7P/3B1N2

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


|   |*N |*B |*Q |*K |*B |*N | . |


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


|*P

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


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


|*P

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


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


|

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

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


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


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


|

P | P | P | P | K | P | N |  

|


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


|   | . |   | . |  

| . |   | P |


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


|

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

|   |


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

(14+12)                         (C+)

SPG in 25.0 moves

 

*6367. V. CRISAN (cooked)

8/5N2/2r4p/5k2/7K/8/3p2P1/3Q2b1

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


|   | . |   | . |  

| . |   | . |


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


|

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

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


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


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


|

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

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


|   | . |   | . |  

| . |   | K |


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


|

. |   | . |   | . |   | . |  

|


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


|   | . |   |*P |  

| . | P | . |


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


|

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

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

(4+5)

Proca Retractor -16 & s#1

Anticirce

 

 

SOLUTIONS

 

6362

Pascal WASSONG

Scheme : wB~×bBf1,
bBc4-f1, b4-b3×Qa2, wQ~-a2, wBd7, bQd6-e6-a1, wB~,

wQd7, bBe6-c4,
wBg8-f7-~, g7-g8=B, etc...

 

During the solution,
this problem shows 5 interceptions, of which a cycle with 4 links :  bBc4 intercepts wQb3, wBd7 intercepts
bQe6, bQd6 intercepts wQd7, wQd7 intercepts bQe6, bQe6 intercepts wBf7-g8.

 

The matrix is
inspired by the problem of Dmitrij Baibikov, PDB N°P1084675,
1k6/1P1p2p1/QP2p3/rnK5/pRnP2PP/1BrpP2p/N1P1P1p1/2N5

 (14+12) Resolve ?

1st Prize Mat Plus, 2008.

 

6363

Pascal WASSONG

Retro :
1.e3×Bf2.

 

This problem shows a
bQ in a cage further possible from the Pawns.

Here the nearest Pawn
to bQa8 is on ç3. The distance is square of 29=square of (5^2+2^2)

 

6364

Eric PICHOURON

1.e4 e6 2.e5 Bd6 3.e×d6 b5 4.d×c7 Bb7 5.c8=N b4 6.Nb6
a×b6 7.c4 Ra5 8.c5 Na6 9.c6 Rg5 10.c7 f5 11.c8=N Nf6 12.Ne7 Bc8 13.Ng6 h×g6
14.h4 00 15.h5 Rf7 16.h6 Qf8 17.Qh5 g×h5 18.f3 g6 19.h7+ Kg7 20.h8=Q+

 

6265

Nicolas DUPONT
& Roberto OSORIO

1.e4 c5 2.Ke2 Qb6 3.Kf3 Qb3+ 4.a×b3 h5 5.Ra6 h4 6.Rc6
a5 7.Ba6 h3 8.Ne2 h×g2 9.h4 g1=Q 10.h5 Qg5 11.h6 Qe3+ 12.d×e3 a4 13.Bd2 a3
14.Bb4 a2 15.Nbc3 a1=Q 16.Qb1 Qa5 17.R×c8+ Qd8 18.Rc6 Qc7 19.Ba3 Qh2 20.b4 Qg1
21.R×g1

 

6366

Roberto
OSORIO & Jorge J. LOIS

1.a4 Nc6
2.a5 Rb8 3.a6 b×a6 4.Ra4 Rb3 5.c×b3 h5 6.Qc2 Rh6 7.Qh7 Rd6 8.Re4 Rd3 9.e×d3 f5
10.Be2 f4 11.Bd1 f3 12.Ne2 f×g2 13.f3 g1=R+ 14.Kf2 Rg5 15.Rg1 Rc5 16.Rg6 Rc3
17.Rf6 g5 18.d×c3 g4 19.Bf4 g3+ 20.Ke3 g2 21.Nd2 g1=R 22.Nf1 Rg5 23.Neg3 Ra5
24.Be5 Ra3 25.b×a3 Nb8

 

*6367

Vlaicu
CRISAN

 

cook

1.Qd1×Rh5(Qd1)
Rg5-h5+ 2.Kg3-h4 Rh5-g5+ 3.Kf2-g3 Bh2-g1+ 4.Ke1-f2 d3-d2+ 5.Kd7×Rc7(Ke1)
Rc8-c7+ 6.Ke8-d7 Rc7-c8+ 7.f6×Ng7(g2) Ne6-g7+ 8.Kd7-e8 Rc8-c7+ 9.Qe2×Ne1(Qd1)
& 1.Qe4+ K×e4(Ke8) or K×f6(Ke8)#

 

Author’s solution :

1.h5×g6ep(g2)
g7-g5+ 2.Qg2×Qh1(Qd1) Bh2-g1+ (h2-h1=Q+ is
illegal here) 3.Kg3-h4 Bg1-h2+ 4.Kf2-g3 Bh2-g1+ 5.Kf1-f2 Bg1-h2+ 6.Ke1-f1
d3-d2+ 7.Kh4×g4(Ke1) Bh2-g1+ 8.Kg3-h4 Bg1-h2+ 9.Kf2-g3 Bh2-g1+ 10.Ke1-f2+ Bg1-h2+
11.Kh4×Rg5(Ke1) Bh2-g1+ 12.Kg3-h4 Bg1-h2+ 13.Kf2-g3 Bh2-g1+ 14.Ke1-f2 Bg1-h2+
15.Kd5×Be4(Ke1) Rc8-c6+ 16.Kd6-d5

and 1.Qf3+ Q×f3(Qd8)#

 







 		 	   		   		 	   		   		 	   		   		 	   		   		 	   		  
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