[Retros] 4 related pj's

[Otto Janko]

Hi ALL

In March 2003 there was a discussion on "4 related pj's". I collected all
contributions in this mail. Which ones should I *NOT* put on the Retro
Corner?

Best Regards,

- Otto Janko [mailto:otto at janko.at] [http://janko.at]
-- Those who desire to give up freedom in order to gain security, 
- will not have, nor do they deserve, either one." [Benjamin Franklin]



Nicolas Dupont
Retro Mailing List, March 2003
L2 -> L3 in 20,5

1. Nc3 d5 2. Nxd5 Be6 3. Nf4 Qd4 4. a3! Ba2 5. b3! Qb2 6. c3! h5 7. Qc2 Rh6
8. Qh7 Ra6 9. d3! Nc6 10. Be3 Rd8 11. Bb6 Nd4 12. e3! Ne2 13. f3! Rd4 14.
Kf2 Nc1+ 15. Kg3 Re4 16. Kh4 g5+ 17. Kxg5 Bg7 18. g3! Bd4 19. Bh3 Nf6 20.
Bc8 e6 21. h3!
	
Nicolas Dupont
Retro Mailing List, March 2003
L2 -> L4 in 17,5

1. h4! d5 2. Rh2 Bh3 3. g4! Qd6 4. Rg2 Qh2 5. f4! Nf6 6. Kf2 Ne4+ 7. Kf3 Nf2
8. e4! d4 9. Bc4 d3 10. Qe2 dxe2 11. d4! e5 12. Bd2 Ba3 13. Ba5 0-0 14. Bxf7
Kh8 15. c4! e1R 16. Nc3 Rb1 17. b4! Bc1 18. a4!

Nicolas Dupont
Retro Mailing List, March 2003
L7 -> L6 in 18

1. d3 a6! 2. Be3 Ra7 3. Bxa7 b6! 4. h4 Bb7 5. Rh3 Bxg2 6. e4 c6! 7. Qh5 Qc7
8. Nf3 Qh2 9. Ne5 d6! 10. Nd7 e6! 11. Qe5 f6! 12. Be2 Kf7 13. Bg4 Kg6 14.
Bf5+ Kh5 15. Nc3 g6! 16. 0-0-0 Bh6+ 17. Kb1 Bc1 18. Rd2 h6!

Nicolas Dupont
Retro Mailing List, March 2003
L7 -> L5 in 17

1. d4 h5! 2. Bh6 g5! 3. Qd3 Bg7 4. Qh7 f5! 5. Nf3 Nf6 6. Ne5 Rg8 7. Ng4 e5!
8. Nc3 Qe7 9. Nd5 Qa3 10. Ne7 d5! 11. c4 Bd7 12. c5 Ba4 13. c6 Nd7 14. cxd7+
Kf7 15. d8B c5! 16. Ba5 b5! 17. Bc3 a5!

Göran Wicklund 
Retro Mailing List, March 2003
L2 -> L3 in 19.5:
[k2r1Nn1/pp3p1Q/2r2n2/2p2B1p/5B1K/PPPPPPPP/qb6/RN1b3R]
16+13. SPG 19.5 (C+)
 
Göran Wicklund 
Retro Mailing List, March 2003
L2-L3 in 18.5
[k2r1Nn1/pp1n1p1Q/2p4r/7p/5B1K/PPPPPPPP/qb4B1/RN3b1R]
SPG 18.5

Göran Wicklund 
Retro Mailing List, March 2003
L1-L2 in 17.5:
[rn6/p1prpkBp/1N111pp1/1p5Q/7K/PPPPPPPP/q1b3B1/R1b2nNR]
 1. Nb1-c3   Pd7-d5     2. Nc3xd5   Pb7-b5     3. Nd5-b6   Qd8-d5
 4. Pa2-a3   Qd5-a2     5. Pb2-b3   Pg7-g6     6. Bc1-b2   Bf8-h6
 7. Bb2-g7   Bc8-f5     8. Pc2-c3   Bf5-c2     9. Pd2-d3   Bh6-c1
10. Pe2-e3   Ng8-f6    11. Qd1-h5   Nf6-e4    12. Pf2-f3   Ne4-d2
13. Ke1-f2   Pf7-f6    14. Kf2-g3   Ke8-f7    15. Kg3-h4   Rh8-d8
16. Pg2-g3   Rd8-d7    17. Bf1-g2   Nd2-f1    18. Ph2-h3

Nicholas Dupont
Retro Mailing List, March 2003
L1-L2 in 16.5
 1. Nb1-c3   Pd7-d5     2. Nc3xd5   Pb7-b5     3. Nd5-b6   Qd8-d5
 4. Pa2-a3   Qd5-a2     5. Pb2-b3   Pg7-g6     6. Bc1-b2   Bf8-h6
 7. Bb2-g7   Bc8-f5     8. Pc2-c3   Bf5-c2     9. Pd2-d3   Bh6-c1
10. Pe2-e3   h5 !    11. Qd1-g4   hxg4    12. Nf3   gxf3
13. Be2   fxe2    14. f3   Nh6    15. Kf2   e1=N
16. g3   Ng2    17. Ph2-h3

Göran Wicklund 
Retro Mailing List, March 2003
L2->L3 in 15.5:
[r3k1nr/ppp1ppBp/6p1/8/6QK/PPPPPPPP/4bq2/R1b2BnR]
14+15. SPG 15.5
 1. Nb1-c3   Pd7-d5     2. Nc3xd5   Qd8-d5
 3. Pa2-a3   Qd5-a2     4. Pb2-b3   Pg7-g6     5. Bc1-b2   Bf8-h6
 6. Bb2-g7   Bc8-f5     7. Pc2-c3   Bf5-c2     8. Pd2-d3   Bh6-c1
 9. Pe2-e3   Nb8-c6    10. Qd1-g4   Nc6-d4    11. Pf2-f3   Nd4-e2
12. Ke1-f2   Ne2-g1    13. Kf2-g3   Bc2-d1    14. Kg3-h4   Qa2-f2+
15. Pg2-g3   Bd1-e2    16. Ph2-h3

Michel Caillaud
Retro Mailing List, March 2003
L7 -> L5 in 14
Not sure using promoted force is quite fair, but here it is:
[rn2Qrk1/4b3/B2B1n2/pppppppp/N2P4/7B/PPP2PPP/R3K1NR]

Christoph Fieberg
Retro Mailing List, March 2003
I do not mind promotees. Two bishops (one of them promoted) do the job!
SPG in 12,5 moves - Christoph Fieberg 21.03.2003
rn1qkbnr/ppp1pppp/7B/1b6/PPPPPPPP/5Q2/4K3/4b1N1
1.h4  d5 2.Rh3 Bxh3 3.g4 Bxf1 4.e4 Bb5 5.c4 d4 6.Nc3 dxc3 7.d4 c2 8.Bh6 c1B
9.b4 Bb2 10.f4 Bxa1 11.Qf3 Bc3+ 12.Ke2 Be1 13.a4
Of course it looks much nicer if 8.Bg5 is played instead of 8.Bh6.

Rustam Ubaidullaev
Retro Mailing List, March 2003
L2 -> L3
SPG in 20.5 moves - Rustam Ubaidullaev 21.03.2003
6nk/p1pnpp1p/r2q4/8/2N3BK/PPPPPPPP/p1p5/B1bb2NR
1. Na3 b5 2. Nc4 b4 3. a3 b3 4. Ra2 bxa2 5. b3 d5 6. Bb2 Bg4 7. Bxg7 d4 
8. Bxh8 d3 9. Ba1 Bh6 10. c3 Kf8 11. Qc2 dxc2 12. d3 Bc1 13. e3 Bd1 14. f3
Kg7 15. Kf2 Kh8 16. Kg3 Qd6+ 17. Kh4 Nd7 18. g3 Rb8 19. Bh3 Rb6 20. Bg4 Ra6
21. h3

Göran Wicklund 
Retro Mailing List, March 2003
Here is an L7-L6 in order, in 16.0:
1qB4r/5kN1/pppppppp/8/7b/B2P2PP/PPP1P1b1/RN1QK1NR
 16 + 13   SPG 16.0        C+