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
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]
14062 - Werner Keym
Dedicated to V. Liskovets
13+10. Can white mate in 3?
[r3k2r/rpp1p1p1/N1p1P1p1/4P2N/4P1Q1/4P3/1P4PB/R3K2R]
14063 - Bernd Gräfrath
Dedicated to Cedric Lytton's 70th birthday
10+16. Shortest proof game in 12.0 moves
[rnb2rk1/ppp1nppp/3bp3/8/3p4/4PP2/qPPP2PP/2KR1R2]
14064 - Nicolas Dupont
Dedicated to Thierry le Gleuher
15+11. Shortest proof game in 27.0 moves
[rnbqkbnr/1p2ppP1/1P6/2Q5/1P2KP2/1P3PB1/4NP2/NR4RB]
14065 - Bernd Gräfrath
15+12. Shortest proof game in 8.5 moves (maximummer)
[r1bq1rk1/ppppp2p/8/6pQ/4P3/8/PPPPNPPP/RNB2RK1]
14066 - Dragan Petrovic
16+13. Shortest resolution? (Circe)
[3kN1N1/1pRB2PP/ppRQPBPb/2prPPnq/3ppKpp/7P/7P/8]
14067 - Ravi Shankar
2+4. -6 & #1 (pacific retractor)
[2kr1NK1/7p/8/8/8/3p4/8/8]
14068 - Werner Keym, Bernd Schwarzkopf
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.
