Die Schwalbe

No. 252, December 2011

15066 - Joaquim Crusats, Andrej N. Frolkin

Die Schwalbe, No. 252, 12/2011

[RBb1k2r/1pPppprB/p2P1Pp1/2P4P/1P4p1/8/7P/4K2R]

12+11. Shortest mate?

[RBb1k2r/1pPppprB/p2P1Pp1/2P4P/1P4p1/8/7P/4K2R]

Solution

The solution not available yet. Please contribute!

15067 - Nikolai Beluchow

Die Schwalbe, No. 252, 12/2011

[1q3q1q/8/1q3Q1K/4N1N1/5q2/2RQ1k1Q/1K3P2/3Q1k1Q]

11+7. Two chess positions have been rotated randomly and then merged into one diagram. No two pieces share the same square. What are the two original positions?

(Zufällig wurden zwei Schachstellungen jeweils verdreht und dann in einem Diagramm gedruckt. Keine zwei Steine wurden übereinander gedruckt. Was waren die beiden Stellungen?)

[1q3q1q/8/1q3Q1K/4N1N1/5q2/2RQ1k1Q/1K3P2/3Q1k1Q]

Solution

The solution not available yet. Please contribute!

15068 - Michel Caillaud

Die Schwalbe, No. 252, 12/2011

Dedicated to Wolfgang Dittmann

[R7/1pp1ppP1/1p2ppPk/B4p2/B2P1K1P/2P2P2/6P1/8]

11+9. Retract 8 moves, then #1 (Proca-Retractor)

[R7/1pp1ppP1/1p2ppPk/B4p2/B2P1K1P/2P2P2/6P1/8]

Solution

The solution not available yet. Please contribute!

15069 - Mario Richter, Zalmen Kornin

Die Schwalbe, No. 252, 12/2011

[2b2k2/8/8/8/N1pp4/1p2p3/PPPPPPPP/K2n2n1]

10+8. (-2s, -1w), then H#2 (Help Retractor)

[2b2k2/8/8/8/N1pp4/1p2p3/PPPPPPPP/K2n2n1]

Solution

The solution not available yet. Please contribute!

15070 - Peter Heyl

Die Schwalbe, No. 252, 12/2011

[2k2bnr/p3pppp/rp6/2p5/8/8/PPPPPPPP/RNBQKBNR]

16+12. Proof game in 8.0 moves

[2k2bnr/p3pppp/rp6/2p5/8/8/PPPPPPPP/RNBQKBNR]

Solution Replay

1. Sf3 c5 2. Se5 Dc7 3. Sxd7 De5 4. Sxb8 Ld7 5. Sxd7 0-0-0 6. Sxe5 Td6 7. Sf3 Ta6 8. Sg1 b6

15071 - Silvio Baier

Die Schwalbe, No. 252, 12/2011

[2bq1b2/2ppp3/n6n/5p2/1Pk4r/1nr5/RrPPPPPR/RNBQKBNR]

16+14. Proof game in 23.5 moves

[2bq1b2/2ppp3/n6n/5p2/1Pk4r/1nr5/RrPPPPPR/RNBQKBNR]

Solution Replay

1.h4 f5 2.h5 Kf7 3.h6 Ke6 4.hxg7 h5 5.Th3 h4 6.Tb3 h3 7.a4 h2 8.a5 h1=T 9.Ta4 T1h3 10.Th4 Tc3 11.Th1 Th4 12.a6 Sh6 13.axb7 a5 14.g8=T a4 15.Tg3 a3 16.Tgh3 a2 17.Ta3 a1=S 18.b4 Sb3 19.Ta1 Ta2 20.T3h2 Sa6 21.b8=T Kd5 22.Tb5+ Kc4 23.Tba5 Tb2 24.T5a2

15072 - Silvio Baier

Die Schwalbe, No. 252, 12/2011

[rnbqkbnr/2ppp3/2RPp3/2K1P3/1P5B/3P1R2/N2PB3/2NQ4]

13+12. Proof game in 29.0 moves

[rnbqkbnr/2ppp3/2RPp3/2K1P3/1P5B/3P1R2/N2PB3/2NQ4]

Solution Replay

1.e4 b5 2.Ke2 b4 3.Ke3 b3 4.Se2 bxa2 5.b4 g5 6.Lb2 g4 7.Lf6 g3 8.Sbc3 gxh2 9.Tc1 a1=D 10.g4 Da6 11.g5 Dd3+ 12.cxd3 a5 13.g6 a4 14.g7 a3 15.gxf8=S a2 16.Se6 a1=L 17.Sa2 h5 18.Tc6 h4 19.Sec1 h3 20.Lh4 Lg7 21.Le2 Lf8 22.Tf1 h1=D 23.e5 Dd5 24.f4 Dd6 25.exd6 h2 26.Kd4 h1=D 27.Kc5 De4 28.Tf3 De5+ 29.fxe5 fxe6

15073 - Bernd Gräfrath, Wolfgang Dittmann, Mario Richter

Die Schwalbe, No. 252, 12/2011

[r1bqkbnr/pppppppp/8/8/2P5/6P1/PP1PPPP1/RNBQK1NR]

15+15. Single Combat Chess. What is the minimum number of a) black b) white knight moves?

[r1bqkbnr/pppppppp/8/8/2P5/6P1/PP1PPPP1/RNBQK1NR]

Solution

The solution not available yet. Please contribute!

Author's solution: a) = 26, b) = 0