The Retrograde Analysis Corner

StrateGems

No. 21, January-March 2003

R0101 - Tom Volet

StrateGems 21, Jan-Mar 2003

Dedicated. to G. Donati's 50th birthday

[q2Bnrrn/ppP2ppb/2pP1pR1/3p1Kp1/P6k/8/P3PPP1/5BR1]

12+15. Release the position

[q2Bnrrn/ppP2ppb/2pP1pR1/3p1Kp1/P6k/8/P3PPP1/5BR1]

R0102 - Klaus Wenda

StrateGems 21, Jan-Mar 2003

[B7/b7/8/8/n1n5/1K4Q1/1P2k3/r4b2]

4+6. Retract 7 half-moves for a #1 (Proca retractor, Anti-Circe Cheylan)

[B7/b7/8/8/n1n5/1K4Q1/1P2k3/r4b2]

R0103 - Wolfgang Dittmann

StrateGems 21, Jan-Mar 2003

[5n2/7p/8/8/7r/7k/6bn/4K3]

1+6. Retract 19 half-moves for a #1 (Proca retractor, Anti-Circe Cheylan)

[5n2/7p/8/8/7r/7k/6bn/4K3]

P0117 - Joost de Heer

StrateGems 21, Jan-Mar 2003

[nrrnbqkb/p6p/5B2/8/8/8/PPP1QPPP/RN2KBNR]

14+10. Proof game in 15.0 moves

[nrrnbqkb/p6p/5B2/8/8/8/PPP1QPPP/RN2KBNR]

P0118 - Dan Meinking & Kostas Prentos

StrateGems 21, Jan-Mar 2003

[rn1q2n1/p1ppp2r/1p6/7p/8/PPPP4/k2P1PP1/b1BBK1N1]

11+13. Proof game in 17.5 moves

[rn1q2n1/p1ppp2r/1p6/7p/8/PPPP4/k2P1PP1/b1BBK1N1]

P0119 - Rustam Ubaidullaev

StrateGems 21, Jan-Mar 2003

[rn6/pppk1ppR/3p3b/PPPPPPPP/1bqp4/2Nr4/3nN3/2BbK2R]

14+16. Proof game in 22.5 moves

[rn6/pppk1ppR/3p3b/PPPPPPPP/1bqp4/2Nr4/3nN3/2BbK2R]

P0120 - Rustam Ubaidullaev

StrateGems 21, Jan-Mar 2003

[2rk3b/8/PPPPPPP1/1pppppp1/5BR1/3K4/2P5/1N1Q3R]

14+9. Proof game in 25.5 moves

[2rk3b/8/PPPPPPP1/1pppppp1/5BR1/3K4/2P5/1N1Q3R]

P0121 - Kostas Prentos & Dan Meinking

StrateGems 21, Jan-Mar 2003

[2nK4/1ppbN3/n1pp1q2/3PNQB1/8/p4rPp/PPP1PPBb/1k4R1]

14+13. Proof game in 32.5 moves

[2nK4/1ppbN3/n1pp1q2/3PNQB1/8/p4rPp/PPP1PPBb/1k4R1]

P0122 - Kevin Begley

StrateGems 21, Jan-Mar 2003

For Kagan

[pppppppp/rb1q1kbr/6n1/2n5/8/4P3/PPPP1PPP/RNBQKBNR]

16+16. Proof game in 11.5 moves (Platzwechsel-Circe)

[pppppppp/rb1q1kbr/6n1/2n5/8/4P3/PPPP1PPP/RNBQKBNR]