The Retrograde Analysis Corner

Die Schwalbe

No. 176, April 1999

10342 - Valeri Liskovets
Die Schwalbe Heft 176, Apr. 1999

[4k2r/1pp1p1p1/2N1Ppp1/4R1P1/5p2/5P2/BP2P1P1/R3K3

11+9. #3 (AP)

10343 - Andrei Kornilov & Andrei Frolkin
Die Schwalbe Heft 176, Apr. 1999

[2bbr1Kn/1ppr1P2/3ppRPk/P4pRB/6p1/8/1PP1PP1P/8]

12+12. What were the last 16 moves, given that no repetition occurred?

10344 - Michel Caillaud
Die Schwalbe Heft 176, Apr. 1999

[8/1Pp1pp2/bkp3P1/pN3pP1/rNKp3n/RqRP1P2/1PP5/rB6]

10345 - Werner Keym
Die Schwalbe Heft 176, Apr. 1999

[3N4/ppp1p1pp/PP1pRBP1/3k1p2/1P1P4/1K2P3/8/1b6]

10+10. On square c2, add a white P (N,B,R,Q). Mate in how many moves?

10346 - Andrei Kornilov & Andrei Frolkin
Die Schwalbe Heft 176, Apr. 1999

[5KQ1/3prPn1/3ppRPk/5pr1/5NpR/6pb/2P2PPP/7N]

12+11. What have been the promotions? On which squares?

10347 - Radovan Tomasevic
Die Schwalbe Heft 176, Apr. 1999

[rn6/1pp1kppp/8888/PP1PPPPP/RNBQKBNR]

15+8. Proof game in 10.0 moves
(b) Pb7 -> d3

10348 - Thierry le Gleuher
Die Schwalbe Heft 176, Apr. 1999

[3qk2r/88888/1P1P1P2/2B1K1NR]

7+3. Proof game in 13.5 moves

10349 - Paul Raican
Die Schwalbe Heft 176, Apr. 1999

[5k1K/88/2b5/8/3N4/b2N4/8]

3+3. White and black retract one move each so that a reflexmate in 1 or a helpmate in 1 is possible. (Circe Parrain)

10351 - Vladimir Chutornoi
Die Schwalbe Heft 176, Apr. 1999

[r3k2r/88/pPppPppP/PpPPpPPp/88/R3K2R]

11+11. How many different positions?