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Phénix

No. 189-190, Dec. 2009

5994 - N. BELUHOV

Phénix 189-190, Dec. 2009

[5kqN/5rr1/5rq1/5rr1/5r2/1P2P1q1/1PPPr2P/n3q2K]

8+13. Mat?

[5kqN/5rr1/5rq1/5rr1/5r2/1P2P1q1/1PPPr2P/n3q2K]

Solution

retro: 1. ... Qf2-e1# 2.h7-h8=N Qh8-g8 3.h6-h7 Rh7-g7 4.h5-h6 Qh6-g6 5.h4-h5 Rh5-g5 6.h3-h4 Qh4-g3 7.Kg1-h1 Qf3-f2+ 8.Kh1-g1 and 8. … Rg2-e2+ 9.Kg1-h1 Rf2-g2+ 10.Kh1-g1 Qe2-f3+ 11.Kg1-h1 Qa6-e2 12.Kh1-g1

Yes there is mat, because the position is legal.

12 single moves determined


5995 - N. BELUHOV

Phénix 189-190, Dec. 2009

Dedicated to Sergey Volobuev

[n7/1Pp5/brp4p/RQ1PP2P/RK1kp3/p2pp1p1/PqPB4/B1N5]

13+13. Check?

[n7/1Pp5/brp4p/RQ1PP2P/RK1kp3/p2pp1p1/PqPB4/B1N5]

Solution

retro: 1. ... Qb1×Rb2+ 2.Be1-d2 g4-g3 3.Bh4-e1 h7-h6 4.Be7-h4 g5-g4 5.Bf8-e7 g6-g5 6.f7-f8=B g7-g6 7.g6×Nf7 and 7. … Nh6-f7 8.g5-g6 Nf5-h6 9.g4-g5 Ng3-f5 10.h4-h5 Ne2-g3 11.g3-g4 Nc3-e2 12.Rb3-b2 Qb2-b1 13.g2-g3 Qb1-b2 14.Bb2-a1 Qa1-b1 15.h3-h4 Nb1-c3 16.Rc3-b3+ Nd2-b1 17.h2-h3 Nc4-d2 18.Kb3-b4 Qb1-a1 (only black tempo needed) 19.Qb4-b5 Bb5-a6 20.Qf8-b4

12 single moves determined


5996 - A. KORNILOV & A. FROLKIN

Phénix 189-190, Dec. 2009

[2QNkRnn/PpRpp1rq/1Kp2prB/6p1/4P3/7P/1P1pPP1P/8]

13+13. 10 last single moves? Where have been the missing units captured?

[2QNkRnn/PpRpp1rq/1Kp2prB/6p1/4P3/7P/1P1pPP1P/8]

Solution

retro: 1.Rf7-f8+ d3-d2 2.Qa8-c8 c4×Bd3 3.Rc8-c7 c5-c4 4.Kb5-b6 c7-c6+ 5.Rb8×Bc8 b6×Bc5 6.Nc6-d8 Kd8-e8 7.Ne5-c6+ Ke8-d8 8.a6-a7 Kd8-e8 9.a5-a6 Ke8-d8 10.a4-a5 Kd8-e8 11.a3-a4 Ke8-d8 12.a2-a3 Kd8-e8 13.Qa3-a8 Ke8-d8 14.Ra8-b8 Kd8-e8 15.Ra4-a8 Ke8-d8 16.Rc4-a4 Kd8-e8 17.Rc1-c4 Ke8-d8 18.Rh1-c1 Kd8-e8 19.e3-e4 Ke8-d8 20.Be4-d3 Kd8-e8 21.Bg2-e4 Ke8-d8 22.Bf1-g2 Kd8-e8 23.g2×Ph3 Ke8-d8 24.Nc4-e5 Kd8-e8 25.Nd6-c4 h4-h3 26.Ne8-d6 h5-h4 27.Rf8-f7 …

The missing units have been captured on the following squares: wNb6, wBç5, wBd3, bBe3, bBc8, bPh3.


5997 - N. BELUHOV

Phénix 189-190, Dec. 2009

[3brk2/2PrppRK/2pP2p1/3p2p1/p7/4P1PP/1P2pPRq/1B3bQn]

12+15. #1

[3brk2/2PrppRK/2pP2p1/3p2p1/p7/4P1PP/1P2pPRq/1B3bQn]

Solution

retro: 1.Kh6-h7 Kg8-f8 2.Rh7-g7+ Rf8-é8 3.Ba2-b1 0-0 (the only move which unlocks the cage) 4.Kg7-h6 a5-a4 5.Rh4-h7 a6-a5 6.Rb4-h4 a7-a6 7.Rb8-b4 h6×Bg5 8.b7-b8=R h7-h6 9.a6×Nb7

It’s Black to move : 1. … Q×h3#


5998 - P. WASSONG

Phénix 189-190, Dec. 2009

Dedicated to Tom Volet

[N3k3/Qn1NP2n/ppBpKP1p/b1Br1pp1/1P1P4/rp1p4/P4P2/R6R]

14+14. Resolve

[N3k3/Qn1NP2n/ppBpKP1p/b1Br1pp1/1P1P4/rp1p4/P4P2/R6R]

Solution

To open the cage:

Bc6-c4, Nd7-d8, Qa7-c7, a7-a6, Bc4-a6, Nd8-d7, Qc7-d1, Nd7-f7, Qd1-g7, Nf7-f8, Qg7-g8, h4-h5×Bg6-g7-g8=Q, bBg6-h5-~, bPg~-g5, g5xQf6, etc...

the wN intercepts the wQ on 4 different lines and the wB on the diagram position


5999 - G. SOBRECASES

Phénix 189-190, Dec. 2009

[rnbr3k/pppp2pp/8/5pn1/1b6/8/PPPPP1PP/RNBQKBNR]

15+14. SPG in 8.0 moves. a) diagram b) Rd8 on e8 (C+)

[rnbr3k/pppp2pp/8/5pn1/1b6/8/PPPPP1PP/RNBQKBNR]

Solution

a) 1.f4 Nf6 2.f5 Ne4 3.f6 Ng5 4.f×e7 f5 5.e×d8=B Bb4 6.Bf6 00 7.Be7 Kh8 8.Bd8 R×d8

b) 1.f4 Nf6 2.f5 Ne4 3.f6 Ng5 4.f×e7 f5 5.e×d8=N Bb4 6.Nf7 00 7.Nd6 Kh8 8.Ne8 R×e8


6000 - F. GOUZE

Phénix 189-190, Dec. 2009

This problem was later found to be anticipated by Michel Caillaud, see solution

[1r6/1ppkpp1p/4b3/3p1q2/8/8/2PPPPPP/RNBQKBNR]

14+10. SPG in 9.0 moves (C+)

[1r6/1ppkpp1p/4b3/3p1q2/8/8/2PPPPPP/RNBQKBNR]

Solution

1.b4 d5 2.b5 Qd7 3.b6 Qf5 4.b×a7 Be6 5.a×b8=Q+ Kd7 6.Q×f8 R×a2 7.Q×g7 Ra8 8.Q×g8 Rb8 9.Q×b8 R×b8

Anticipated by:

Michel CAILLAUD
Jubilé G. Donati-50, StrateGems 2002-03
Commendation

15+14. SPG in 8.0 moves (C+)

[1rb2bnr/p3p1pp/1p1p1k2/5p2/5q2/8/P1PPPPPP/RNBQKBNR]

1.b4 f5 2.b5 Kf7 3.b6 Kf6 4.b×c7 b6 5.c×b8=Q Qc7 6.Qb7 Qf4 7.Qc7 d6 8.Qb8 R×b8


6001 - Y. MINTZ

Phénix 189-190, Dec. 2009

[r2qkbnr/3pp1pp/8/8/8/8/1PPPPP2/RNBQKB2]

11+10. SPG in 9.0 moves (C+)

[r2qkbnr/3pp1pp/8/8/8/8/1PPPPP2/RNBQKB2]

Solution

1.a4 f5 2.a5 f4 3.a6 f3 4.a×b7 f×g2 5.b×c8=Q g×h1=Q 6.Q×c7 Q×g1 7.Q×a7 Q×h2 8.Q×b8 Qhc7 9.Q×d8+ Q×d8


6002 - P. RAICAN

Phénix 189-190, Dec. 2009

[r1kRR1n1/8/2KbP3/8/8/8/8/8]

4+4. SPG in 20.5 moves

[r1kRR1n1/8/2KbP3/8/8/8/8/8]

Solution

1.e4 d5 2.e5 Bf5 3.e6 B×c2 4.Q×c2 Qd6 5.Q×c7 Q×h2 6.Q×b7 Kd8 7.Q×a7 Kc8 8.Q×b8+ Q×b8 9.R×h7 Q×b2 10.R×g7 Rh2 11.R×f7 R×g2 12.R×e7 R×f2 13.K×f2 Q×c1 14.Ke3 Q×f1 15.Kd4 Q×g1+ 16.K×d5 Q×b1 17.Kc6 Q×a2 18.Rd1 Q×d2 19.Re8+ Qd8 20.Rd7 Bd6 21.Rd×d8#


6003 - G. SOBRECASES

8/7k/8/8/8/5pp1/5p2/7K

[1+4. h#4 (Joker King h1 and h7; Elliuortap)]

1+4. h#4 (Joker King h1 and h7; Elliuortap)

[8/7k/8/8/8/5pp1/5p2/7K]

Solution

The last move of the wJK (white Joker King) can’t be a Rook or Queen’s move because of the JKh7 auto-check.

So, it’s a Bishop’s move 0.JKg2-h1! preceded by JKe4-(x)h7!! To patrol e4.

1.JKc2? JK×f3 2.JKa4 JKe2 3.f1=B+ JKe4 4.Bb5 JKc2+; but 5.g2! stop the check

2…JKd5!? 3.f1=B ??zz 4.Bb5 JKb3‡

1.JKf5!! JK×f3 2.JKh3 JKe2 tempo (2….??zz 3.f1=B ??zz 4. Bg2+ JKg4‡) 3.f1=B+ JKe4! (play as a Pawn not a Bishop !) 4.Bg2 JKf5‡


6004 - A. BROBECKER (computer composed)

Phénix 189-190, Dec. 2009

Dedicated to Jacques Dupin

Find the unique proof game in Hypervolage Chess ending by 4... Bd1×Pe2#. (C+)

Solution

1.b3(bPb3) b×c2 2.Nc3(bNc3) c×d1=B 3.Rb1(bRb1) R×c1(wRc1) 4.Rb1(bRb1) B×e2(wBe2)# (switchback)


6005 - H. GRUDZINSKI

Phénix 189-190, Dec. 2009

This problem was later found to be cooked

[rnb1k1nr/ppp2p1p/5p2/8/8/6P1/PPPKP2P/R1BQ1BN1]

12+12. SPG in 9.5 moves (Elliuortap)

[rnb1k1nr/ppp2p1p/5p2/8/8/6P1/PPPKP2P/R1BQ1BN1]

Solution

1.d4 e5 2.Nd2 Bc5 3.d×c5 e4 4.Ndf3 e×f3 5.c6 f×g2 6.c×d7 Qf6 (5...Qf6? 6.c×d7 f×g2??) 7.d8=B (7.Kd2?) g×h1=N 8.Kd2 Ng3 9.B×f6 g×f6 10.f×g3

Cooked by Popeye:

3.d×e5 Qh4 4.Ne4 Q×f2 5.g3 Qg2 6.N×c5 Q×h1 7.N×d7 Qf3 8.Nf6 Q×f6 9.e×f6 g×f6 10.Kd2


6006 - H. GRUDZINSKI

Phénix 189-190, Dec. 2009

[Phénix 189-190, Dec. 2009]

12+14. SPG in 10.0 moves (Take & Make)

Correction of 5813 Phénix 179 (diagramm error : wRa1 must be on h1!)

[rnb2bnr/p2pp1pp/5p2/8/8/N1K1P3/PPPP1PPP/2k2qNR]

Solution

1.e3 f6 2.Ke2 Kf7 3.Kd3 Kg6 4.Qh5+ K×h5[d1] 5.b4 K×c1[b2] 6.Na3 K×a1[c1] 7.Kc3 c5 8.Ba6 Qb6 9.b×c5[c4] Qb5 10.c×b5[b2] b×a6[f1]=Q


6007 - I. FAYBISH

Phénix 189-190, Dec. 2009

[r3kbnr/ppp2ppp/3p4/8/3P4/2P5/PP1K2PP/6QR]

9+12. SPG in 16.5 moves (Irregular grid chess (8 columns))

[r3kbnr/ppp2ppp/3p4/8/3P4/2P5/PP1K2PP/6QR]

Solution

1.Nf3 Nc6 2.Ne5 Nd4 3.Nc6 d×c6 4.Na3 Bf5 5.Nc4 Bd3 6.e×d3 Qc8 7.Be2 Qf5 8.Bf3 Qa5 9.Bd5 Qc3 10.d×c3 c×d5 11.Bf4 d×c4 12.Kd2 c×d3 13.Qg1 d×c2 14.Rd1 c×d1=N 15.Bd6 Ne3 16.f×e3 e×d6 17.e×d4


Joker: takes the move capacities of the unit which has just played

Elliuortap (anti-Patrol): A partrolled piece can’t capture