The Retrograde Analysis Corner

StrateGems

No. 25, Jan-Mar 2004

R0109 - Wolfgang Dittmann

Strategems 25, Jan-Mar 2004

[1b5R/8/5p1p/8/3p2r1/5p1k/6pn/3rK1B1]

3+10. Retract 7 half-moves for #1 (Proca retractor, Anticirce Cheylan)

[1b5R/8/5p1p/8/3p2r1/5p1k/6pn/3rK1B1]

P0143 - CC Frankiss

Strategems 25, Jan-Mar 2004

[1nb1k3/1p1ppprp/1P3npB/1p6/1P6/1pP1P3/1PQ2PPP/3NK1NR]

14+13. SPG 14.0

[1nb1k3/1p1ppprp/1P3npB/1p6/1P6/1pP1P3/1PQ2PPP/3NK1NR]

P0144 - Roberto Osorio, Jorge J Lois

Strategems 25, Jan-Mar 2004

[r1n1k3/p1pp1p1p/2n2p2/1p3b2/7N/6q1/PPPPPrPP/RNBQKB1R]

15+14. Shortest proof game in 14.5 moves

[r1n1k3/p1pp1p1p/2n2p2/1p3b2/7N/6q1/PPPPPrPP/RNBQKB1R]

P0145 - Roberto Osorio, Jorge J Lois

Strategems 25, Jan-Mar 2004

[8/2p1pp2/8/rnbqkbnr/8/1P6/P2P2PP/RN2KB1R]

10+11. Shortest proof game in 16.0 moves

[8/2p1pp2/8/rnbqkbnr/8/1P6/P2P2PP/RN2KB1R]

P0146 - Nicolas Dupont

Strategems 25, Jan-Mar 2004

[1nbqkbnr/1pp1pppp/4R3/Bp1P4/3NP3/1PK2P1R/1P1N1P1P/8]

13+14. Shortest proof game in 18.0 moves

[1nbqkbnr/1pp1pppp/4R3/Bp1P4/3NP3/1PK2P1R/1P1N1P1P/8]

P0147 - Reto Aschwanden

Strategems 25, Jan-Mar 2004

[rnbqkbnr/p1p4p/1Q2p1p1/1P5P/2RPP3/8/P2B1P2/1KNBRN2]

14+13. Shortest proof game in 20.0 moves

[rnbqkbnr/p1p4p/1Q2p1p1/1P5P/2RPP3/8/P2B1P2/1KNBRN2]

P0148 - Rustam Ubaidullaev

Strategems 25, Jan-Mar 2004

For Anna

[rnbq1bnr/ppppppBp/4R1P1/7Q/R2P4/1P2PN2/P1P2PP1/3kNBK1]

16+15. Shortest proof game in 23.0 moves

[rnbq1bnr/ppppppBp/4R1P1/7Q/R2P4/1P2PN2/P1P2PP1/3kNBK1]