An hard test position

Uri Blass · Post by **Uri Blass** » Tue May 08, 2007 2:26 pm

[D]2k2nqr/pp4nr/4p1p1/P2p2b1/1PpP2N1/2P2RBP/4R3/4QBK1 w - - 0 33
bm Rxf8+

This move is from the following game and I give also some analysis

a6 as suggested by chess programs but it seems that black can defend by sacrificing the exchange(Nf5) so I think that Rxf8+ is better.

[Event "Monarch Assurance Isle of Man"]
[Site "Port Erin IOM"]
[Date "2006.??.??"]
[Round "4"]
[White "Sahl, Bj"]
[Black "Hutchinson, N."]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2364"]
[BlackElo "2107"]
[PlyCount "73"]
[EventDate "2006.??.??"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O Ne7 7. Nh4 c5 8. c3 Bg6
9. Be3 Nc6 10. Nxg6 hxg6 11. Nd2 Qb6 12. Nf3 Be7 13. Qb1 O-O-O 14. a3 Rh5 15.
b4 c4 16. h3 Rdh8 17. a4 Qd8 18. a5 Qg8 19. Nh2 Rh4 20. f4 Bd8 21. Rf3 Ne7 22.
Bf1 f6 23. Ra2 Kb8 24. Re2 Nf5 25. Bf2 R4h6 26. Qe1 Nf8 27. exf6 gxf6 28. g4
Ng7 29. g5 fxg5 30. fxg5 Bxg5 31. Bg3+ Kc8 32. Ng4 R6h7 33. Rxf8+ Qxf8 34. Rf2
Qe7 (34... Qd8 35. Rf7) (34... Qg8 35. Qe5 Nf5 36. Qb8+ Kd7 37. Qxb7+ Ke8 38.
Qa8+ Kf7 39. Qxa7+) 35. Qe5 Qd8 (35... Kd7 36. a6 Kc6 (36... b5 37. Qc7+ Ke8
38. Qb8+ Qd8 39. Qxb5+) (36... bxa6 37. Qc7+ Ke8 38. Qc8+ Qd8 39. Qxa6 Nf5 40.
Qxe6+ Ne7 41. Re2) (36... b6 37. Bxc4) 37. Bxc4 Nf5 (37... Nh5 38. b5+) (37...
Ne8 38. Bb5+ Kb6 39. c4) (37... Rd8 38. Qe1) 38. b5+ Kb6 39. axb7) 36. Rf7 Be7
37. Rxe7 1-0

NKOTB · Post by **NKOTB** » Tue May 08, 2007 6:26 pm

I use to play OTB and finished with 1798 USCF. In looking at this hard position, I am extremely impressed with the play of white. I wonder that the expert (black) actually felt good about the position and was wondering if to accept a draw or press for the full point. Very nice position and move, especially for 'human' play. I'm sure the better engines see it. Thanks for the visual treat.

NKOTB · Post by **NKOTB** » Tue May 08, 2007 6:31 pm

Let me add that although there were nice moves setting up the trap, one needed to see that getting rid of the E pawn, opening the H2B8 diagonal was the key to the win. In after-thought it almost seems simple, but for a 1798, I most probably would have lost to the expert as white.

Kirk · Post by **Kirk** » Wed May 09, 2007 4:43 am

Almost every engine tested had a6.

ProDeo with a high attack setting goes with Rxf8+ for a short time, before switching back to a6

Uri Blass · Post by **Uri Blass** » Wed May 09, 2007 6:14 am

NKOTB wrote:I use to play OTB and finished with 1798 USCF. In looking at this hard position, I am extremely impressed with the play of white. I wonder that the expert (black) actually felt good about the position and was wondering if to accept a draw or press for the full point. Very nice position and move, especially for 'human' play. I'm sure the better engines see it. Thanks for the visual treat.

I do not know a single engine that can see it in reasonable time

The combination is simply too deep for them.
The main problem is not with the line that was played in the game but with the line of 35...Kd7

Even 3 plies in the game after the diagram engines see nothing in a reasonable time.

testing it with rybka suggest that maybe 34...Qd8 was the right defence in the game but to my human eye it seems to be worse for black relative to 33.a6 Nf5 34.Be5

Note that after 34...Qd8 35.Rf7 Be7 white does not have to go to endgame like rybka suggests in its main line by 36.Qe5 Bd6 but can choose simply to play 36.a6

Sahl,B - Hutchinson,N, Monarch Assurance Isle of Man 2006
[D]2k2q1r/pp4nr/4p1p1/P2p2b1/1PpP2N1/2P3BP/5R2/4QBK1 b - - 0 1

Analysis by Rybka 2.3.1 32-bit :

34...Qf8-d8
³ (-0.48) Depth: 2 00:00:00
34...Qf8-d8
³ (-0.48) Depth: 3 00:00:00
34...Qf8-d8
= (-0.07) Depth: 4 00:00:00
34...Qf8-d8 35.Rf2-f7
² (0.30) Depth: 5 00:00:00
34...Qf8-d8 35.Rf2-f7 Bg5-e7
± (0.97) Depth: 6 00:00:00 3kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7
³ (-0.40) Depth: 6 00:00:00 9kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8
³ (-0.38) Depth: 7 00:00:00 12kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8 38.Qb8xa7
³ (-0.38) Depth: 8 00:00:00 16kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8 38.Qb8xa7 Ng7-f5
³ (-0.33) Depth: 9 00:00:00 22kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8 38.Qb8xb7 Ng7-f5 39.Qb7-a6
= (0.00) Depth: 10 00:00:01 35kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8 38.Qb8xb7 Ng7-f5 39.Qb7-a6 Nf5xg3 40.Qa6xe6+ Qd8-e7
= (0.00) Depth: 11 00:00:02 55kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8 38.Qb8xb7 Ng7-f5 39.Qb7-a6 Nf5xg3 40.Qa6xe6+ Qd8-e7 41.Qe6-c8+
= (0.00) Depth: 12 00:00:04 90kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8 38.Qb8xb7 Ng7-f5 39.Qb7-a6 Nf5xg3 40.Qa6xe6+ Qd8-e7 41.Qe6-c8+
= (0.00) Depth: 13 00:00:05 165kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8 38.Qb8xb7 Ng7-f5 39.Qb7-a6 Nf5xg3 40.Qa6xe6+ Qd8-e7 41.Qe6-c8+
= (0.00) Depth: 14 00:00:06 307kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8
= (0.00) Depth: 15 00:00:26 1751kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8 38.Qb8xb7 Ng7-f5 39.Qb7-a6 Nf5xg3 40.Qa6xe6+ Qd8-e7 41.Qe6-c8+
= (0.00) Depth: 16 00:00:32 2190kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.Qe5-c7+ Kd7-e8 37.Qc7-b8+ Qe7-d8 38.Qb8xb7 Ng7-f5 39.Qb7-a6 Nf5xg3 40.Qa6xe6+ Qd8-e7 41.Qe6-c8+
= (0.00) Depth: 17 00:00:46 3241kN
34...Qf8-e7 35.Qe1-e5 Kc8-d7 36.a5-a6 b7-b5 37.Qe5-c7+ Kd7-e8 38.Qc7-b8+ Qe7-d8 39.Qb8xb5+ Qd8-d7 40.Qb5xd7+ Ke8xd7
± (0.94) Depth: 18 00:02:25 9944kN
34...Qf8-d8 35.Rf2-f7 Bg5-e7 36.Qe1-e5 Be7-d6 37.Qe5xd6 Qd8xd6 38.Bg3xd6 Ng7-f5 39.Rf7xh7
± (0.74) Depth: 18 00:03:10 13475kN
34...Qf8-d8 35.Rf2-f7 Bg5-e7 36.Qe1-e5 Be7-d6 37.Qe5xd6 Qd8xd6 38.Bg3xd6 Ng7-f5 39.Rf7xh7
± (0.83) Depth: 19 00:03:52 16361kN
34...Qf8-d8 35.Rf2-f7 Bg5-e7 36.Qe1-e5 Be7-d6 37.Qe5xd6 Qd8xd6 38.Bg3xd6 Ng7-f5 39.Rf7xh7 Rh8xh7 40.Bd6-f4 Rh7-f7 41.Ng4-e5
± (0.74) Depth: 20 00:05:57 25467kN

(, 09.05.2007)

Dann Corbit · Post by **Dann Corbit** » Wed May 09, 2007 8:43 pm

Glaurung did not find it in 1/2 hour:

Code: Select all

Analysis from E&#58;\sh.epd   
5/9/2007 12&#58;20&#58;06 AM Level&#58; 1800 Seconds
Analyzing engine&#58; Glaurung

1&#41; Rxf8+; id "Monarch A 
    Searching move&#58; Rf3xf8
    Best move &#40;Glaurung&#41;&#58; Bf1-g2
    Not found in&#58; 30&#58;00
      2	00&#58;00	         139	296	+0.96	Ng4e5 Ng7f5
      2	00&#58;00	         211	449	+1.09	Bg3e5 Nf8d7
      2	00&#58;00	         262	558	+1.29	Ng4f6 Bg5xf6 Rf3xf6
      3	00&#58;00	         518	1.104	+0.66	Ng4f6 Bg5xf6 Rf3xf6 Ng7f5
      3	00&#58;00	         667	1.422	+0.94	Bg3e5 Nf8d7 Be5xg7 Qg8xg7 Re2xe6
      4	00&#58;00	       2.707	5.592	+0.94	Bg3e5 Nf8d7 Be5xg7 Qg8xg7 Re2xe6
      5	00&#58;00	       5.721	11.820	+0.82	Bg3e5 Nf8d7 Be5xg7 Qg8xg7 Re2xe6 Kc8b8 Re6e8+ Rh8xe8 Qe1xe8+ Kb8c7
      5	00&#58;00	       9.468	19.561	+1.03	a5a6 Ng7f5 a6xb7+ Rh7xb7 Bg3e5 Rh8h7 Bf1g2
      6	00&#58;00	      23.170	44.990	+1.03	a5a6 Nf8d7 a6xb7+ Kc8xb7 Bg3h2 Kb7a8 Qe1a1 Ng7f5
      7	00&#58;00	      50.492	89.843	+0.98	a5a6 Nf8d7 a6xb7+ Kc8xb7 Bg3h2 a7a6 Qe1a1 Ng7f5 Bf1g2
      7	00&#58;00	      91.476	150.206	+1.15	Qe1b1 Rh7h5 Bg3e5 Nf8d7 Be5xg7 Qg8xg7 Re2xe6 Kc8b8 Qb1xg6
      8	00&#58;00	     117.394	178.954	+1.11	Qe1b1 Ng7f5 Bg3e5 Nf8d7 Be5xh8 Rh7xh8 Bf1g2 Kc8b8
      9	00&#58;01	     234.275	288.516	+1.19	Qe1b1 Ng7f5 Bg3e5 Nf8d7 Be5xh8 Rh7xh8 Qb1e1 Bg5h4 Qe1a1
     10	00&#58;01	     414.423	390.228	+1.05	Qe1b1 Ng7f5 Bg3e5 Nf8d7 Be5xh8 Rh7xh8 Qb1e1 Bg5h4 Qe1c1 Kc8b8 Qc1f4+ Kb8a8
     11	00&#58;02	   1.281.565	557.929	+1.07	Qe1b1 Ng7f5 Bg3e5 Nf5g7 Be5f6 Rh7h5 Bf1g2 Nf8d7 Qb1xg6 Nd7xf6 Ng4xf6 Bg5xf6 Rf3xf6 Rh5f5 Rf6xf5 e6xf5
     12	00&#58;04	   2.775.653	636.763	+1.13	Qe1b1 Ng7f5 Bg3e5 Nf5g7 Be5f6 Bg5h4 Bf1g2 Nf8d7 Qb1xg6 Kc8b8 Bf6xg7 Rh7xg7 Qg6xe6 Qg8xe6 Re2xe6
     13	00&#58;08	   5.321.267	675.716	+1.13	Qe1b1 Ng7f5 Bg3e5 Nf5g7 Be5f6 Bg5h4 Bf1g2 Nf8d7 Qb1xg6 Kc8b8 Bf6xg7 Rh7xg7 Qg6xe6 Qg8xe6 Re2xe6
     14	00&#58;18	  12.607.206	679.743	+1.09	Qe1b1 Ng7f5 Bg3e5 Nf5g7 Be5f6 Bg5h4 Bf1g2 Nf8d7 Qb1xg6 Nd7xf6 Ng4xf6 Bh4xf6 Rf3xf6 Rh7h6 Qg6xh6 Rh8xh6 Rf6xh6
     15	00&#58;53	  37.820.095	716.316	+1.09	Qe1b1 Rh7h5 a5a6 Ng7f5 a6xb7+ Kc8xb7 Bg3h2 Nf8d7 Ng4e5 Nd7xe5 Bh2xe5 Nf5h4 Rf3f2 Rh8h7 Qb1a1 Rh7f7 Kg1h1 Nh4f3
     16	01&#58;44	  74.575.152	717.261	+1.21	Qe1b1 Nf8d7 Qb1xg6 Ng7f5 Qg6xe6 Qg8xe6 Re2xe6 Nf5xg3 Rf3xg3 Bg5f4 Rg3f3 Rh8f8 Rf3f2 Kc8c7 Bf1g2 Rh7h5 b4b5 Kc7b8
     17	05&#58;11	 226.342.052	727.764	+1.23	Qe1b1 Bg5h4 Bg3h2 Rh7h5 Bf1g2 Ng7f5 a5a6 Nf8h7 a6xb7+ Kc8xb7 Bh2e5 Nh7g5 Rf3f1 Nf5g3 Be5xg3 Bh4xg3 Ng4f6 Qg8b8 Nf6xh5 Bg3h2+ Kg1h1 g6xh5
     18	08&#58;44	 382.749.977	729.567	+1.23	Qe1b1 Bg5h4 Bg3h2 Rh7h5 Bf1g2 Ng7f5 a5a6 Nf8h7 a6xb7+ Kc8xb7 Bh2e5 Nh7g5 Rf3f1 Nf5g3 Be5xg3 Bh4xg3 Ng4f6 Qg8b8 Nf6xh5 Bg3h2+ Kg1h1 g6xh5
     19	27&#58;14	1.193.066.491	730.134	+1.13	Qe1b1 Bg5h4 Bg3h2 Rh7h5 Bf1g2 Ng7f5 a5a6 b7b6 Ng4e5 Nf8h7 Ne5c6 Kc8d7 b4b5 Nh7g5 Rf3f1 Kd7e8 Qb1b4 Qg8f8 Qb4xf8+ Rh8xf8 Nc6xa7
     19	29&#58;42	1.306.410.067	733.174	+1.15	Bf1g2 Nf8d7 a5a6 b7b6 Ng4e5 Nd7xe5 Bg3xe5 Bg5d8 Qe1f1 Ng7f5 Be5xh8 Rh7xh8 Qf1a1 Kc8b8 b4b5 Qg8e8 Qa1b1 Bd8f6 Rf3f1 e6e5 d4xe5 Bf6xe5
   5/9/2007 12&#58;50&#58;11 AM, Time for this analysis&#58; 00&#58;30&#58;00, Rated time&#58; 30&#58;00

This engine found it, but only gave it a draw score:

Code: Select all

Analysis from E&#58;\sh.epd   
5/9/2007 12&#58;20&#58;06 AM Level&#58; Infinite
Analyzing engine&#58; Chess_64

1&#41; Rxf8+; id "Monarch A 
    Searching move&#58; Rf3xf8
    Best move &#40;Chess_64&#41;&#58; Rf3xf8
    identical moves! Found in&#58; 02&#58;37
     2/7	00&#58;00	         103	0	-0.60	Kg1h1 Ng7f5
     3/7	00&#58;00	         392	0	-0.49	Kg1h1 Ng7f5 Ng4e5 Nf5xg3+ Qe1xg3
     4/12	00&#58;00	       1.875	0	-0.59	Kg1h1 Ng7f5 Bg3e5 Nf5h4
     5/17	00&#58;00	       3.592	0	-0.72	Kg1h1 Ng7f5 Bg3e5 Nf5h4 Rf3f2
     6/17	00&#58;00	      18.344	0	-0.32	Kg1h1 Bg5h4 Ng4f6 Bh4xf6 Rf3xf6 Ng7f5 Bg3f4
     7/17	00&#58;00	      42.162	0	-0.22	Kg1h1 Bg5h4 Bg3xh4 Rh7xh4 Ng4f6 Qg8f7 Qe1g3 Ng7f5
     7/23	00&#58;00	      79.244	507.974	-0.13	a5a6 Nf8d7 b4b5 b7b6 Kg1h1 Ng7f5 Re2xe6 Nf5xg3+ Rf3xg3
     8/23	00&#58;00	     147.578	496.896	-0.21	a5a6 Nf8d7 b4b5 b7b6 Kg1h2 Ng7f5 Re2xe6 Nf5xg3 Rf3xg3
     9/25	00&#58;01	     345.511	502.927	-0.41	a5a6 Nf8d7 a6xb7+ Kc8xb7 Qe1a1 Ng7f5 Re2a2 Qg8a8 Bg3h2 Nf5h4 Rf3f2
    10/32	00&#58;02	   1.127.604	501.157	-0.19	a5a6 Nf8d7 Bg3h2 Nd7b8 Bh2xb8 Kc8xb8 Qe1g3+ Kb8c8 a6xb7+ Kc8xb7 Ng4e5
    11/32	00&#58;04	   2.326.548	499.688	+0.10	a5a6 Nf8d7 Bg3h2 Nd7b8 Bh2xb8 Kc8xb8 Qe1g3+ Kb8a8 Qg3c7 Qg8b8 a6xb7+ Qb8xb7 Qc7xb7+ Ka8xb7 Rf3f7+ Kb7b8 Ng4e5 Ng7f5 Ne5c6+ Kb8c8 Nc6xa7+ Kc8b8
    12/36	00&#58;09	   4.396.343	500.665	-0.05	a5a6 Nf8d7 Bg3h2 Nd7b8 Bh2xb8 Kc8xb8 Qe1g3+ Kb8c8 Ng4e5 Bg5h4 Qg3xg6 Ng7f5 a6xb7+ Rh7xb7 Qg6xg8+ Rh8xg8+ Re2g2 Rg8xg2+ Bf1xg2 Rb7g7
    13/38	00&#58;23	  10.698.007	469.273	-0.29	a5a6 Nf8d7 Bg3h2 b7xa6 Qe1a1 Kc8b7 Kg1h1 Ng7f5 Re2e1 Nf5h4 Rf3f2 Kb7a8 Qa1xa6
    13/38	00&#58;51	  24.661.453	479.879	-0.13	Bg3h2 Nf8d7 Kg1h1 a7a6 Ng4e5 Nd7xe5 Bh2xe5 Qg8e8 Bf1g2 Bg5h4 Qe1c1 Qe8d7 Qc1b1 Qd7e8
    14/43	01&#58;16	  36.720.870	484.962	-0.01	Bg3h2 Nf8d7 Kg1h1 a7a6 Ng4e5 Bg5h4 Qe1d2 Nd7xe5 Bh2xe5 Qg8e8 Bf1g2 Qe8e7 Qd2c2 Qe7g5 Rf3f7
    14/50	02&#58;37	  80.331.522	509.990	 0.00	Rf3xf8+ Qg8xf8 Re2f2 Qf8e7 Qe1e5 Kc8d7 Qe5c7+ Kd7e8 Qc7c8+ Qe7d8 Qc8xb7 Ng7f5 Qb7a6 Nf5xg3 Qa6xe6+ Qd8e7 Qe6c8+ Qe7d8 Qc8e6+
    15/54	04&#58;39	 146.950.842	526.853	 0.00	Rf3xf8+ Qg8xf8 Re2f2 Qf8e7 Qe1e5 Kc8d7 Qe5c7+ Kd7e8 Qc7c8+ Qe7d8 Qc8xb7 Ng7f5 Qb7a6 Nf5xg3 Qa6xe6+ Qd8e7 Qe6c8+ Qe7d8 Qc8e6+
    16/54	11&#58;26	 367.537.050	535.927	 0.00	Rf3xf8+ Qg8xf8 Re2f2 Qf8e7 Qe1e5 Kc8d7 Qe5c7+ Kd7e8 Qc7c8+ Qe7d8 Qc8xb7 Ng7f5 Qb7a6 Nf5xg3 Qa6xe6+ Qd8e7 Qe6c8+ Qe7d8 Qc8e6+
   5/9/2007 1&#58;50&#58;18 AM, Time for this analysis&#58; 00&#58;30&#58;00, Rated time&#58; 02&#58;37

PauloSoare · Post by **PauloSoare** » Thu May 10, 2007 12:17 am

[quote="Uri Blass
Note that after 34...Qd8 35.Rf7 Be7 white does not have to go to endgame like rybka suggests in its main line by 36.Qe5 Bd6 but can choose simply to play 36.a6[/quote]

Uri, in the line 36.a6, after 36....bxa6 I didn´t find an easy win for whites.

Paulo Soares

Kirk · Post by **Kirk** » Thu May 10, 2007 1:32 am

I had the computer (Junior 8) finish out the games for both moves. a6 came out a draw while Rxf8+ was a win for white.

JuLieN · Post by **JuLieN** » Fri Nov 08, 2013 8:47 pm

Funny... Six years later, with much better engines and much faster CPUs, your position is still undecided, Uri: SF4 still hesitates between a6 and Rxf8!

Code: Select all

Stockfish 211013 64&#58; 
1.27 33.a6 &#40;profondeur 30, 1/47&#41;, 429,9M positions &#40;4,8M pos/sec&#41;
0.00&#58; +0.88/3 33.Nf6 Bxf6 34.Rxf6
0.00&#58; +0.08/4 33.Ne5 Nf5 34.a6 bxa6
0.00&#58; +0.68/5 33.a6 Nf5 34.axb7+ Rxb7 35.Be5 Rh5
0.00&#58; +0.48/6 33.a6 b6 34.Qb1 Nd7 35.Qxg6 Nf5 36.Rxe6 Nxg3 37.Rxg3 Qxg6 38.Rxg6
0.00&#58; +0.48/7 33.a6 b6 34.Qb1 Nd7 35.Qxg6 Nf5 36.Rxe6 Nxg3 37.Rxg3 Qxg6 38.Rxg6
0.00&#58; +0.48/8 33.a6 b6 34.Qb1 Nd7 35.Qxg6 Nf5 36.Rxe6 Nxg3 37.Rxg3 Qxg6 38.Rxg6
0.00&#58; +0.64/9 33.a6 b6 34.Qa1 Nf5 35.Be5 Nd7 36.Bxh8 Rxh8 37.b5
0.00&#58; +0.66/10 33.a6 b6 34.Qd1 Nf5 35.Be5 Nd7 36.Bxh8 Rxh8 37.Bg2 Kb8 38.b5
0.00&#58; +0.66/11 33.a6 b6 34.Qd1 Nf5 35.Be5 Nd7 36.Bxh8 Rxh8 37.Bg2 Kb8 38.b5
0.00&#58; +1.31/12 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Bg2 Bh4 38.Qd2 Bg3
0.00&#58; +1.33/13 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.Ra2 Bh4 40.Qe5 Qc7 41.b5 Qxe5 42.Nxe5
0.00&#58; +1.29/14 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.Bxh4 Qxh4 37.Qxh4 Rxh4 38.Rxg7 Rxh3 39.Bxh3 Rxh3 40.Ne5 Rxc3 41.Rg8+ Kc7 42.Rxg6 Rb3 43.Rg7+ Kc8
0.00&#58; +1.25/15 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.Bxh4 Qxh4 37.Qxh4 Rxh4 38.Rxg7 Rxh3 39.Bxh3 Rxh3 40.Ne5 Rxc3 41.Rg8+ Kc7 42.Kf2 Rb3 43.Rg7+ Kc8 44.Rxg6 Rxb4 45.Rxe6 Rb3
0.00&#58; +1.05/16 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.Qe2 Qd7 40.Ne5 Bxe5 41.Qxe5 Qc7 42.Qxc7+ Kxc7
0.00&#58; +1.05/17 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.Qe2 Qd7 40.b5 Qd6 41.Qe1 Qd7 42.Re2 Qd6 43.Ne5 Bxe5 44.Rxe5 Qd8
0.00&#58; +1.05/18 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.Qe2 Qd7 40.b5 Qd6 41.Qe1 Qd7 42.Re2 Qd6 43.Ne5 Bxe5 44.Rxe5 Qd8
0.01&#58; +1.29/19 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.b5 Qd7 40.Qd2 Qd6 41.Re2 Bh4 42.Qf4 Qxf4 43.Rxf4 Bg3 44.Rf3
0.01&#58; +1.29/20 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.b5 Qd7 40.Qd2 Qd6 41.Re2 Bh4 42.Qf4 Qxf4 43.Rxf4 Bg3 44.Rf3
0.01&#58; +1.33/21 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Qh7 37.Bg2 Bf6 38.Nc6 Bh4 39.Qc1 Qc7 40.b5 Bg3 41.Qg5 Bh2+ 42.Kf1 Ng3+ 43.Rxg3 Bxg3 44.Nxa7+ Qxa7 45.Qxg3 Qd7
0.04&#58; +1.05/22 33.a6 Nf5 34.Be5 b5 35.Bxh8 Rxh8 36.Ne5 Qg7 37.Rg2 Rh5 38.Kh1 Bh4 39.Qe2 Rg5 40.Rxg5 Bxg5 41.Qh2 Qc7 42.Qg2 Bf6 43.Nxg6 Qd6 44.Nxf8 Qxf8
0.06&#58; +1.25/23 33.a6 Nf5 34.Be5 b5 35.Nf6 Bxf6 36.Bxf6 Rd7 37.Bxh8 Qxh8 38.Rff2 Rd6 39.Bg2 Qh4 40.Ra2 Nd7 41.Rfe2 Qf6 42.Ra5 Rb6 43.Rea2 Qg5 44.Re2 Qf4 45.Rf2 Qh4 46.Rf1 Qg5 47.Ra2 Qf6 48.Rff2 Nb8 49.Rfe2 Nxa6 50.Ra5 Nxb4 51.cxb4 Nxd4
0.08&#58; +1.11/24 33.a6 Nf5 34.Be5 b5 35.Nf6 Bxf6 36.Bxf6 Rd7 37.Bxh8 Qxh8 38.Rff2 Rd6 39.Bg2 Qh4 40.Ra2 Nd7 41.Rfe2 Qf6 42.Ra5 Rb6 43.Rf2 Nb8 44.Qd2 Qh4 45.Qf4 Qxf4 46.Rxf4 Kd7 47.Rg4 Nc6
0.11&#58; +1.27/25 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.Bxh4 Qxh4 37.Qxh4 Rxh4 38.Rxg7 Rxh3 39.Bxh3 Rxh3 40.Nf6 Rxc3 41.Ne8 b6 42.Rxa7 bxa5 43.bxa5 Rd3 44.Nd6+ Kd8 45.Nf7+ Kc8 46.Re7 Rxd4 47.Nd6+ Kd8 48.Rxe6 g5 49.Nf7+ Kd7 50.Nxg5 Rg4+
0.12&#58; +1.19/26 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.Bxh4 Qxh4 37.Qxh4 Rxh4 38.Rxg7 Rxh3 39.Bxh3 Rxh3 40.Ne5 Rxc3 41.a6 bxa6 42.Kf2 Rh3 43.Rxa7 c3 44.Rxa6 Kb7 45.Rc6 Rh4 46.Rxc3 Rxd4 47.Nc6 Rh4 48.Ke3 Rh3+ 49.Kd4 Rxc3 50.Na5+ Kb6 51.Kxc3 e5
0.16&#58; +1.47/27 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.Bxh4 Qxh4 37.Qxh4 Rxh4 38.Rxg7 Rxh3 39.Bxh3 Rxh3 40.Ne5 Rxc3 41.Nf7 b6 42.Nd6+ Kd8 43.Rxa7 bxa5 44.bxa5 Rd3 45.Nb7+ Ke8 46.a6 Rxd4 47.Nd6+ Kd8 48.Rb7 Rd1+ 49.Kf2 Rd2+ 50.Ke3 Rd3+ 51.Ke2 Ra3 52.a7 Ra2+ 53.Ke3
0.27&#58; +1.19/28 33.Rxf8+ Qxf8 34.Rf2 Qe7 35.Qe5 Kd7 36.Bg2 Nf5 37.Bh2 Bh4
0.34&#58; +1.17/28 33.a6 Nf5 34.Be5 b5 35.Nf6 Bxf6 36.Bxf6 Rd7 37.Bxh8 Qxh8 38.Rff2 Rd6 39.Bg2 Qh4 40.Ra2 Nd7 41.Rfe2 Qf6 42.Ra5 Rb6 43.Ra1 Nb8 44.Raa2 Nd7 45.Ra1
0.48&#58; +1.11/29 33.a6 Nf5 34.Be5 b5 35.Nf6 Bxf6 36.Bxf6 Rd7 37.Bxh8 Qxh8 38.Rff2 Rd6 39.Ra2 Nd7 40.Rfe2 Qf6 41.Bg2 Rb6 42.Ra5 Qg5 43.Ra1 Qf6 44.Qf2 Nb8 45.Ra5 Qg5
1.27&#58; +0.94/30 33.a6 Nf5 34.axb7+ Rxb7 35.Bh2 Bd8 36.Qa1 Nh7 37.Qa6 Ng5 38.Rff2 Qe8

JuLieN · Post by **JuLieN** » Fri Nov 08, 2013 9:00 pm

Correction : pushing SF definitely favors Rxf8, so your intuition was excellent!

Code: Select all

Stockfish 211013 64&#58; 
14.13 33.Rxf8+ &#40;profondeur 40, 1/47&#41;, 4,7G positions &#40;5,5M pos/sec&#41;
0.00&#58; +0.88/3 33.Nf6 Bxf6 34.Rxf6
0.00&#58; +0.08/4 33.Ne5 Nf5 34.a6 bxa6
0.00&#58; +0.68/5 33.a6 Nf5 34.axb7+ Rxb7 35.Be5 Rh5
0.00&#58; +0.48/6 33.a6 b6 34.Qb1 Nd7 35.Qxg6 Nf5 36.Rxe6 Nxg3 37.Rxg3 Qxg6 38.Rxg6
0.00&#58; +0.48/7 33.a6 b6 34.Qb1 Nd7 35.Qxg6 Nf5 36.Rxe6 Nxg3 37.Rxg3 Qxg6 38.Rxg6
0.00&#58; +0.48/8 33.a6 b6 34.Qb1 Nd7 35.Qxg6 Nf5 36.Rxe6 Nxg3 37.Rxg3 Qxg6 38.Rxg6
0.00&#58; +0.64/9 33.a6 b6 34.Qa1 Nf5 35.Be5 Nd7 36.Bxh8 Rxh8 37.b5
0.00&#58; +0.66/10 33.a6 b6 34.Qd1 Nf5 35.Be5 Nd7 36.Bxh8 Rxh8 37.Bg2 Kb8 38.b5
0.00&#58; +0.66/11 33.a6 b6 34.Qd1 Nf5 35.Be5 Nd7 36.Bxh8 Rxh8 37.Bg2 Kb8 38.b5
0.00&#58; +1.31/12 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Bg2 Bh4 38.Qd2 Bg3
0.00&#58; +1.33/13 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.Ra2 Bh4 40.Qe5 Qc7 41.b5 Qxe5 42.Nxe5
0.00&#58; +1.29/14 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.Bxh4 Qxh4 37.Qxh4 Rxh4 38.Rxg7 Rxh3 39.Bxh3 Rxh3 40.Ne5 Rxc3 41.Rg8+ Kc7 42.Rxg6 Rb3 43.Rg7+ Kc8
0.00&#58; +1.25/15 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.Bxh4 Qxh4 37.Qxh4 Rxh4 38.Rxg7 Rxh3 39.Bxh3 Rxh3 40.Ne5 Rxc3 41.Rg8+ Kc7 42.Kf2 Rb3 43.Rg7+ Kc8 44.Rxg6 Rxb4 45.Rxe6 Rb3
0.00&#58; +1.05/16 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.Qe2 Qd7 40.Ne5 Bxe5 41.Qxe5 Qc7 42.Qxc7+ Kxc7
0.00&#58; +1.05/17 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.Qe2 Qd7 40.b5 Qd6 41.Qe1 Qd7 42.Re2 Qd6 43.Ne5 Bxe5 44.Rxe5 Qd8
0.00&#58; +1.05/18 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.Qe2 Qd7 40.b5 Qd6 41.Qe1 Qd7 42.Re2 Qd6 43.Ne5 Bxe5 44.Rxe5 Qd8
0.01&#58; +1.29/19 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.b5 Qd7 40.Qd2 Qd6 41.Re2 Bh4 42.Qf4 Qxf4 43.Rxf4 Bg3 44.Rf3
0.01&#58; +1.29/20 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Rh7 37.Rg2 Bf6 38.Nc6 Qf7 39.b5 Qd7 40.Qd2 Qd6 41.Re2 Bh4 42.Qf4 Qxf4 43.Rxf4 Bg3 44.Rf3
0.01&#58; +1.33/21 33.a6 Nf5 34.Be5 b6 35.Bxh8 Rxh8 36.Ne5 Qh7 37.Bg2 Bf6 38.Nc6 Bh4 39.Qc1 Qc7 40.b5 Bg3 41.Qg5 Bh2+ 42.Kf1 Ng3+ 43.Rxg3 Bxg3 44.Nxa7+ Qxa7 45.Qxg3 Qd7
0.04&#58; +1.05/22 33.a6 Nf5 34.Be5 b5 35.Bxh8 Rxh8 36.Ne5 Qg7 37.Rg2 Rh5 38.Kh1 Bh4 39.Qe2 Rg5 40.Rxg5 Bxg5 41.Qh2 Qc7 42.Qg2 Bf6 43.Nxg6 Qd6 44.Nxf8 Qxf8
0.06&#58; +1.25/23 33.a6 Nf5 34.Be5 b5 35.Nf6 Bxf6 36.Bxf6 Rd7 37.Bxh8 Qxh8 38.Rff2 Rd6 39.Bg2 Qh4 40.Ra2 Nd7 41.Rfe2 Qf6 42.Ra5 Rb6 43.Rea2 Qg5 44.Re2 Qf4 45.Rf2 Qh4 46.Rf1 Qg5 47.Ra2 Qf6 48.Rff2 Nb8 49.Rfe2 Nxa6 50.Ra5 Nxb4 51.cxb4 Nxd4
0.08&#58; +1.11/24 33.a6 Nf5 34.Be5 b5 35.Nf6 Bxf6 36.Bxf6 Rd7 37.Bxh8 Qxh8 38.Rff2 Rd6 39.Bg2 Qh4 40.Ra2 Nd7 41.Rfe2 Qf6 42.Ra5 Rb6 43.Rf2 Nb8 44.Qd2 Qh4 45.Qf4 Qxf4 46.Rxf4 Kd7 47.Rg4 Nc6
0.11&#58; +1.27/25 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.Bxh4 Qxh4 37.Qxh4 Rxh4 38.Rxg7 Rxh3 39.Bxh3 Rxh3 40.Nf6 Rxc3 41.Ne8 b6 42.Rxa7 bxa5 43.bxa5 Rd3 44.Nd6+ Kd8 45.Nf7+ Kc8 46.Re7 Rxd4 47.Nd6+ Kd8 48.Rxe6 g5 49.Nf7+ Kd7 50.Nxg5 Rg4+
0.12&#58; +1.19/26 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.Bxh4 Qxh4 37.Qxh4 Rxh4 38.Rxg7 Rxh3 39.Bxh3 Rxh3 40.Ne5 Rxc3 41.a6 bxa6 42.Kf2 Rh3 43.Rxa7 c3 44.Rxa6 Kb7 45.Rc6 Rh4 46.Rxc3 Rxd4 47.Nc6 Rh4 48.Ke3 Rh3+ 49.Kd4 Rxc3 50.Na5+ Kb6 51.Kxc3 e5
0.16&#58; +1.47/27 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.Bxh4 Qxh4 37.Qxh4 Rxh4 38.Rxg7 Rxh3 39.Bxh3 Rxh3 40.Ne5 Rxc3 41.Nf7 b6 42.Nd6+ Kd8 43.Rxa7 bxa5 44.bxa5 Rd3 45.Nb7+ Ke8 46.a6 Rxd4 47.Nd6+ Kd8 48.Rb7 Rd1+ 49.Kf2 Rd2+ 50.Ke3 Rd3+ 51.Ke2 Ra3 52.a7 Ra2+ 53.Ke3
0.27&#58; +1.19/28 33.Rxf8+ Qxf8 34.Rf2 Qe7 35.Qe5 Kd7 36.Bg2 Nf5 37.Bh2 Bh4
0.34&#58; +1.17/28 33.a6 Nf5 34.Be5 b5 35.Nf6 Bxf6 36.Bxf6 Rd7 37.Bxh8 Qxh8 38.Rff2 Rd6 39.Bg2 Qh4 40.Ra2 Nd7 41.Rfe2 Qf6 42.Ra5 Rb6 43.Ra1 Nb8 44.Raa2 Nd7 45.Ra1
0.48&#58; +1.11/29 33.a6 Nf5 34.Be5 b5 35.Nf6 Bxf6 36.Bxf6 Rd7 37.Bxh8 Qxh8 38.Rff2 Rd6 39.Ra2 Nd7 40.Rfe2 Qf6 41.Bg2 Rb6 42.Ra5 Qg5 43.Ra1 Qf6 44.Qf2 Nb8 45.Ra5 Qg5
3.58&#58; +0.90/30 33.a6 Nf5 34.axb7+ Rxb7 35.Bh2 Bd8 36.Bg2 Nh4 37.Rff2 Nxg2 38.Kxg2 Qh7 39.Rf3 g5 40.Kg1 Qg8 41.Be5 Rhh7 42.Bd6 Ng6 43.Rxe6 Nf4 44.Bxf4 gxf4 45.Qe5 Rbe7 46.Rxe7 Rxe7 47.Qxf4 Re1+ 48.Kg2 Qg6 49.Qf5+ Qxf5 50.Rxf5 Rc1 51.Rf3
4.10&#58; +0.98/31 33.a6 Nf5 34.axb7+ Rxb7 35.Bh2 Bd8 36.Bg2 Nh4 37.Rff2 Nxg2 38.Kxg2 Qh7 39.Rf3 g5 40.Kg1 Qg8 41.Be5 Rhh7 42.Qa1 Ng6 43.Qa6
5.05&#58; +1.49/31 33.Rxf8+ Qxf8 34.Rf2 Qe7 35.Qe5 Kd7 36.a6 b5 37.Qc7+ Ke8 38.Qb8+ Qd8 39.Qxb5+ Qd7 40.Qxd7+ Kxd7 41.Rf7+ Kc8 42.Rc7+ Kd8 43.Rb7 Nf5 44.Be5 Rxh3 45.Rxa7 Rh1+ 46.Kg2 R8h4 47.Rf7 Rxf1 48.Kxf1 Rh1+ 49.Ke2 Ra1 50.b5 Ra2+ 51.Kd1 Ra1+ 52.Kc2 Be7 53.Bf6 Bxf6 54.Rxf6
6.01&#58; +2.36/32 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.a6 bxa6 37.Bxh4 Qxh4 38.Qe5 Ne8 39.Qxe6+ Kb8 40.Rxh7 Qxh7 41.Qxd5 Nc7 42.Qc6 Qh5 43.Bg2 Qb5 44.Qf6 Qe8 45.Qf3 Qb5 46.Ne5 Re8 47.Nxc4 Re6 48.Ne5 Kc8 49.Qf8+ Ne8 50.Qf7 Rxe5 51.dxe5 Qxe5 52.Qxg6 Nd6 53.Qd3
6.41&#58; +2.28/33 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Bh4 36.a6 bxa6 37.Bxh4 Qxh4 38.Qe5 Ne8 39.Qxe6+ Kb8 40.Rxh7 Qxh7 41.Qxd5 Nc7 42.Qc6 Qh5 43.Bg2 Qb5 44.Qf6 Qe8 45.Qf3 Qb5 46.Ne5 Re8 47.Qf6 Qa4 48.Qd6 Qa1+ 49.Kh2
7.15&#58; +2.52/34 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Be7 36.Rxg7 Rxg7 37.Qxe6+ Qd7 38.Qe5 Bd6 39.Qxd6 Qxd6 40.Bxd6 Rgh7 41.Be5 Rf8 42.Bg2 Kd7 43.Ne3 Rhf7 44.Bxd5 Rf3 45.Bxf3 Rxf3 46.Nxc4 Rxc3 47.Nd6 b6 48.axb6 axb6 49.Kg2 Rb3 50.b5 Ke6 51.h4 Kd5 52.Kf2 Ke6 53.Ne8 Kd5 54.Ke2 Ra3
7.35&#58; +2.44/35 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Be7 36.Rxg7 Rxg7 37.Qxe6+ Qd7 38.Qe5 Bd6 39.Qxd6 Qxd6 40.Bxd6 Rgh7 41.Be5 Rf8 42.Bg2 Kd7 43.Ne3 Rhf7 44.Bxd5 Rf3 45.Bxf3 Rxf3 46.Nxc4 Rxc3 47.Nd6 b6 48.axb6 axb6 49.Kg2 Rb3 50.b5
8.09&#58; +2.44/36 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Be7 36.Rxg7 Rxg7 37.Qxe6+ Qd7 38.Qe5 Bd6 39.Qxd6 Qxd6 40.Bxd6 Rgh7 41.Be5 Rf8 42.Bg2 Kd7 43.Ne3 Rhf7 44.Bxd5 Rf3 45.Bxf3 Rxf3 46.Nxc4 Rxc3 47.Nd6 b6 48.axb6 axb6 49.Kg2 Rb3 50.b5 Ke6 51.h4 Kd5 52.Nc8 Rxb5
8.59&#58; +2.50/37 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Be7 36.Rxg7 Rxg7 37.Qxe6+ Qd7 38.Qe5 Bd6 39.Qxd6 Qxd6 40.Bxd6 Rgh7 41.Be5 Rf8 42.Bg2 Kd7 43.Ne3 Rhf7 44.Bxd5 Rf3 45.Bxf3 Rxf3 46.Nxc4 Rxc3 47.Nd6 b6 48.axb6 axb6 49.Kg2 Rb3 50.b5 Ke6 51.h4 Rc3 52.Ne8
10.09&#58; +2.42/38 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Be7 36.Rxg7 Rxg7 37.Qxe6+ Qd7 38.Qe5 Bd6 39.Qxd6 Qxd6 40.Bxd6 Rgh7 41.Be5 Rf8 42.Bg2 Kd7 43.Ne3 Rhf7 44.Bxd5 Rf3 45.Bxf3 Rxf3 46.Nxc4 Rxc3 47.Nd6 b6 48.axb6 axb6 49.Kg2 Ke6 50.b5 Kd5 51.h4 Rb3 52.Kf2 Rh3 53.Nc8 Kc4 54.Nxb6+ Kxb5
13.11&#58; +2.26/39 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Be7 36.Rxg7 Rxg7 37.Qxe6+ Qd7 38.Qe5 Bd6 39.Qxd6 Qxd6 40.Bxd6 Rgh7 41.Be5 Rf8 42.Bg2 Kd7 43.Ne3 Rhf7 44.Bxd5 Rf3 45.Bxf3 Rxf3 46.Nxc4 Rxc3 47.Nd6 Rxh3 48.Nxb7 Kc6 49.Nd6 a6 50.Kf2 Rb3 51.Nc8 Kd5 52.Ne7+ Ke4 53.Nxg6
14.13&#58; +2.34/40 33.Rxf8+ Qxf8 34.Rf2 Qd8 35.Rf7 Be7 36.Rxg7 Rxg7 37.Qxe6+ Qd7

An hard test position

An hard test position

Re: An hard test position

Re: An hard test position

Re: An hard test position

Re: An hard test position

Re: An hard test position

Re: An hard test position

Re: An hard test position

Re: An hard test position

Re: An hard test position