Jan-Mar 2010

R364c -

 [1nbkqbnr/ppppp3/R1r5/8/4Q3/8/1PPPP1B1/1NB3N1] [8/8/5p2/5p2/P5KP/5PP1/8/8]

10+13. Shortest proof game in 19.0 moves (Alice chess)

Solution

1. a4(B) h5(B) 2. Ra6(B) h4(A) 3. Rf6(A) h3(B) 4. h4(B) Rh6(B) 5. Rh8(B) Sa6(B) 6. Rb8(A) h2(A) 7. Rc8(B) h1=B(B) 8. Rcc6(A) Bd5(A) 9. f3(B) Qb8(B) 10. Kf2(B) OOO(B) 11. Qe1(B) Rdh8(A) 12. Qe4(A) Kd8(A) 13. Rcd6(B) Be6(B) 14. Kg3(A) Bc8(A) 15. Kg4(B) Qe8(A) 16. g3(B) Sb8(A) 17. Rda6(A) Rc6(A) 18. Bh3(B) gf6(B) 19. Bg2(A) f5(B)

Bc8 is the promoted h-pawn, black queen and king switch places, Rh8 is originally from a8, Sb8 makes a switchback.

R367 -

13+15. Shortest proof game in 21.5 moves

[rnbq2nr/p1ppp2p/5k2/5p2/1PP5/1RpKbP1B/PB2NP2/QN1R4]

Solution

1. c4 b5 2. Nc3 b4 3. Rb1 bxc3 4. b4 Nf6 5. Rb3 Ne4 6. Bb2 Nxd2 7. Qa1 Nf3+ 8. exf3 g5 9. Ke2 g4 10. Kd3 g3 11. Ne2 gxh2 12. g4 Bh6 13. Bh3 Be3 14. Rd1 h1=N 15. g5 Ng3 16. g6 Nf5 17. g7 Nh6 18. g8=N f5 19. Nf6+ Kf7 20. Ne4 Ng8 21. Nd2 Kf6 22. Nb1

Black and white have a Phoenix-Pronkin knight

R368 -