Die Schwalbe

No. 236, April 2009

14060 - Andrei Frolkin

Die Schwalbe 236, April 2009

Dedicated to D. Baibikov

14+12. Release the position

[R2kBQRK/PPpNppr1/brp3P1/1p4p1/1p2P3/P5b1/2P2PP1/8]

Solution

14061 - Klaus Wenda

Die Schwalbe 236, April 2009

Dedicated to G. Weeth

(This problem was later found to be cooked)

7+10. -16 & #1 (Proca retractor, anticirce). Note: To avoid a cook, the condition must be changed to 'Anticirce Cheylan'.

[Q1bk1n2/1n3p2/8/2B3P1/r7/2p5/P1p1PK1P/2r4q]

Solution

14062 - Werner Keym

Die Schwalbe 236, April 2009

Dedicated to V. Liskovets

13+10. Can white mate in 3?

[r3k2r/rpp1p1p1/N1p1P1p1/4P2N/4P1Q1/4P3/1P4PB/R3K2R]

Solution

14063 - Bernd Gräfrath

Die Schwalbe 236, April 2009

Dedicated to Cedric Lytton's 70th birthday

10+16. Shortest proof game in 12.0 moves

[rnb2rk1/ppp1nppp/3bp3/8/3p4/4PP2/qPPP2PP/2KR1R2]

Solution

14064 - Nicolas Dupont

Die Schwalbe 236, April 2009

Dedicated to Thierry le Gleuher

15+11. Shortest proof game in 27.0 moves

[rnbqkbnr/1p2ppP1/1P6/2Q5/1P2KP2/1P3PB1/4NP2/NR4RB]

Solution

14065 - Bernd Gräfrath

Die Schwalbe 236, April 2009

15+12. Shortest proof game in 8.5 moves (maximummer)

[r1bq1rk1/ppppp2p/8/6pQ/4P3/8/PPPPNPPP/RNB2RK1]

Solution

14066 - Dragan Petrovic

Die Schwalbe 236, April 2009

16+13. Shortest resolution? (Circe)

[3kN1N1/1pRB2PP/ppRQPBPb/2prPPnq/3ppKpp/7P/7P/8]

Solution

14067 - Ravi Shankar

Die Schwalbe 236, April 2009

(This problem was later found to be cooked)

2+4. -6 & #1 (pacific retractor)

[2kr1NK1/7p/8/8/8/3p4/8/8]

Solution

14068 - Werner Keym, Bernd Schwarzkopf

Die Schwalbe 236, April 2009

In a legal position with 3 white pieces and the black king, the 6 distances between the pieces are all integer. The sum of the distance to the origin square of all pieces should be minimal.

a) White has 2 pawns
b) White has 1 pawn
c) White has 0 pawns

German text: In einer legalen Stellung mit drei wei?#376;en Steinen,
darunter a) 2, b) 1, c) 0 Bauern, und dem schwarzen König sind alle (sechs) Abstände zwischen den Steinen ganzzahlig. Die Summe der (vier) Abstände der Steine zu ihren Partieanfangsfeldern soll minimal sein.

Solution