Author: Sune Larsson
Date: 02:36:55 12/14/02
[D]8/1pp5/p1p3pp/5k2/5P1P/P4KP1/1PPR4/5r2 w - - 0 8
The above position was reached between Fritz 8 - Aristarch,
in my ongoing rook ending tourney (Nunn1 position 40/60 minutes).
Here Fritz played 8.Rf2? with a draw eval (+0.09). Ari happily
swapped rooks with -0.26 - followed up by playing Ke4,h5 and then
created weaknesses in the white Q-side. The king penetrated at the
right moment and black went on to win it. 0-1
The same thing happened in a very similar position vs Shredder PB.
(a3 wasn't played in that game). That one also ended 0-1.
The latent white breakthrough with g4,hxg,f5,gxf,h5 is not a guarantee
for a sure draw in the diagram position!
Both games below.
[Event "Nunn1 40/60'"]
[Site "Kil"]
[Date "2002.12.12"]
[Round "1"]
[White "Fritz 8"]
[Black "Shredder Paderborn"]
[Result "0-1"]
[SetUp "1"]
[FEN "8/1ppr1kp1/p1p4p/8/8/5P2/PPP1RKPP/8 w - - 0 1"]
[PlyCount "118"]
[EventDate "2002.??.??"]
{W=12.0 ply; 449kN/s; 83 147 TBAs
B=12.3 ply; 229kN/s; 2 169 013 TBAs
} 1. f4
{Both last book move 0.31/14 89} 1... Rd1 {0.21/15 226} 2. h4 {(Ke3) 0.28/13 68
} 2... g6 {(Rh1) 0.09/14 117} 3. Ke3 {(g3) 0.22/14 117} 3... Kf6 {-0.07/15 84}
4. g3 {(Kf3) 0.16/14 145} 4... Kf5 {(c5) -0.25/16 82} 5. Kf3 {(b3) 0.25/15 144}
5... Rf1+ {-0.04/16 144} 6. Rf2 {(Kg2) 0.09/15 74} 6... Rxf2+ {
(Rg1) -0.62/18 81} 7. Kxf2 {0.16/14 18} 7... Ke4 {-0.47/17 34} 8. Ke1 {
(b4) 0.00/15 75} 8... c5 {(h5) -0.82/18 88} 9. Kd2 {(Kf2) -0.12/15 77} 9... c4
{(h5) -0.87/18 115} 10. Kd1 {(Ke2) -0.28/15 66} 10... b6 {(h5) -1.24/18 131}
11. c3 {(Kd2) -0.09/16 95} 11... h5 {-1.88/19 100} 12. Ke2 {-0.91/17 69} 12...
a5 {-1.42/19 113} 13. Kf2 {-0.97/17 79} 13... a4 {-2.97/18 100} 14. Kg2 {
(a3) -2.81/17 65} 14... Ke3 {(b5) -3.83/19 121} 15. a3 {(Kh2) -4.56/18 123}
15... b5 {-3.76/20 100} 16. Kh3 {(Kg1) -4.72/19 65} 16... c5 {(Kf3) -3.82/19 72
} 17. Kg2 {-3.47/19 69} 17... b4 {-3.88/19 132} 18. Kh2 {-3.53/19 73} 18... Kd3
{(bxc3) -3.44/18 98} 19. g4 {-3.50/19 76} 19... bxc3 {-3.26/18 98} 20. bxc3 {
-3.72/20 80} 20... Kxc3 {-3.43/21 116} 21. f5 {-3.41/21 218} 21... gxf5 {
-3.51/19 86} 22. gxh5 {(gxf5) -3.25/20 198} 22... Kb3 {-3.85/18 97} 23. h6 {
-3.50/18 77} 23... c3 {-3.83/16 71} 24. h7 {-3.53/16 80} 24... c2 {-3.83/16 126
} 25. h8=Q {-3.56/15 349} 25... c1=Q {-3.27/10 6} 26. h5 {(Qe5) -3.56/12 64}
26... c4 {(Qd2+) -3.89/11 61} 27. h6 {-3.12/13 101} 27... Qd2+ {-3.91/11 74}
28. Kh3 {-3.81/13 143} 28... c3 {(Qe3+) -4.04/11 160} 29. Qg8+ {
(h7) -3.37/13 75} 29... Kxa3 {-4.17/10 24} 30. h7 {-3.87/12 60} 30... Qe3+ {
-4.36/11 71} 31. Qg3 {-4.31/13 40} 31... Qxg3+ {-4.57/12 56} 32. Kxg3 {
-3.87/11 1} 32... c2 {-4.50/12 11} 33. h8=Q {-4.53/14 142} 33... c1=Q {
-4.26/9 6} 34. Qf8+ {(Kf3) -4.37/12 50} 34... Kb3 {-4.79/12 85} 35. Qb8+ {
-4.59/12 111} 35... Ka2 {-5.02/12 87} 36. Qg8+ {-4.69/12 51} 36... Kb1 {
-5.03/13 67} 37. Qb8+ {-4.81/12 55} 37... Qb2 {-5.03/13 121} 38. Qa7 {
-4.87/12 61} 38... Qb4 {-5.42/12 50} 39. Qd7 {(Qg1+) -4.87/10 30} 39... Kb2 {
(Qg4+) -5.92/11 57} 40. Qe8 {-4.87/9 6} 40... f4+ {(Qc4) -6.61/11 53} 41. Kh3 {
(Kf3) -6.09/12 99} 41... Qc4 {-11.73/13 139} 42. Kh2 {(Qd7) -9.66/12 72} 42...
f3 {(a3) -32.57/12 196} 43. Qh8+ {(Qe5+) -20.22/11 88} 43... Ka2 {-#49/10 89}
44. Qh6 {(Qd8) -#60/12 230} 44... Qe2+ {(Qc2+) -#16/11 92} 45. Kg3 {-#11/11 22}
45... f2 {(Qg2+) -#15/11 167} 46. Qh4 {(Qc6) -#15/10 24} 46... f1=Q {-#14/12 91
} 47. Qxa4+ {-#13/6 0} 47... Kb1 {-#13/1 0} 48. Qb4+ {(Qb3+) -#13/1 0} 48...
Kc1 {-#12/1 0} 49. Qc3+ {(Qf4+) -#12/1 0} 49... Qc2 {-#11/1 0} 50. Qa1+ {
-#11/1 0} 50... Qb1 {-#10/1 0} 51. Qa3+ {-#9/1 0} 51... Qb2 {-#9/1 0} 52. Qxb2+
{-#8/1 0} 52... Kxb2 {-#8/1 0} 53. Kg4 {-#7/1 0} 53... Kc3 {(Qf2) -#7/1 0} 54.
Kg5 {-#6/1 0} 54... Kd4 {-#6/1 0} 55. Kg4 {(Kg6) -#5/1 0} 55... Ke4 {
(Qe2+) -#5/1 0} 56. Kg5 {-#4/1 0} 56... Qa6 {(Qf5+) -#4/1 0} 57. Kh4 {-#3/1 0}
57... Qg6 {(Qf6+) -#3/1 0} 58. Kh3 {-#3/1 0} 58... Kf3 {-#2/1 0} 59. Kh2 {
-#1/1 0} 59... Qg2# {-#1/1 0} 0-1
[Event "Nunn1 40/60'"]
[Site "Kil"]
[Date "2002.12.13"]
[Round "1"]
[White "Fritz 8"]
[Black "Aristarch 4.4"]
[Result "0-1"]
[SetUp "1"]
[FEN "8/1ppr1kp1/p1p4p/8/8/5P2/PPP1RKPP/8 w - - 0 1"]
[PlyCount "78"]
[EventDate "2002.??.??"]
{W=16.7 ply; 424kN/s; 7 224 TBAs
B=15.5 ply; 426kN/s; 23 981 TBAs
} 1. f4 {
Both last book move 0.31/14 89} 1... Kf6 {0.20/11 18} 2. Kf3 {0.28/14 171} 2...
Rd1 {0.20/12 156} 3. h4 {(a3) 0.28/13 81} 3... Rf1+ {0.15/12 120} 4. Rf2 {
(Kg4) 0.25/15 106} 4... Rh1 {(Ra1) 0.12/12 101} 5. g3 {0.22/15 103} 5... g6 {
(c5) 0.14/11 35} 6. Rd2 {(Re2) 0.22/14 163} 6... Kf5 {(Rf1+) 0.03/12 93} 7. a3
{(Rd7) 0.22/14 118} 7... Rf1+ {0.08/12 39} 8. Rf2 {(Kg2) 0.09/15 113} 8...
Rxf2+ {(Rg1) -0.26/13 51} 9. Kxf2 {0.16/14 19} 9... Ke4 {-0.26/14 16} 10. Ke1 {
0.00/15 69} 10... c5 {(h5) -0.33/13 17} 11. Ke2 {(b3) -0.25/15 75} 11... h5 {
(c4) -0.50/15 131} 12. a4 {(Kf2) -0.47/15 72} 12... c4 {-0.78/15 52} 13. c3 {
(Kf2) -1.28/17 121} 13... a5 {(b5) -1.47/14 7} 14. Kf2 {-1.94/18 79} 14... c6 {
-1.13/16 29} 15. Ke2 {-2.12/18 79} 15... b6 {-1.86/15 7} 16. Kf2 {-2.72/19 163}
16... b5 {-1.85/17 80} 17. Kg2 {(Ke2) -2.78/17 68} 17... Ke3 {
(bxa4) -2.02/17 71} 18. Kh2 {(Kh1) -4.16/18 60} 18... Kf3 {(Kf2) -2.25/17 41}
19. Kh3 {-3.66/19 60} 19... b4 {-2.73/17 26} 20. Kh2 {-2.56/19 75} 20... b3 {
(bxc3) -2.42/17 25} 21. Kh3 {-2.87/24 71} 21... Ke4 {-2.72/22 62} 22. Kh2 {
-2.87/23 79} 22... Kd3 {-3.03/22 153} 23. g4 {-3.22/22 128} 23... hxg4 {
-3.21/21 79} 24. h5 {-3.53/21 71} 24... gxh5 {-3.62/20 22} 25. f5 {-4.03/21 147
} 25... Kc2 {-3.90/19 67} 26. f6 {-4.22/20 247} 26... Kxb2 {-3.90/18 93} 27. f7
{-4.44/18 122} 27... Ka2 {-3.79/17 95} 28. f8=Q {-4.37/16 103} 28... b2 {
-4.09/16 98} 29. Qf1 {(Qc5) -4.37/14 120} 29... b1=Q {-4.26/15 100} 30. Qxc4+ {
-5.44/13 170} 30... Kb2 {(Qb3) -4.38/14 42} 31. Qxc6 {-4.75/13 86} 31... Qc2+ {
-4.45/12 33} 32. Kg1 {(Kh1) -4.87/12 44} 32... Qc1+ {-4.85/13 281} 33. Kg2 {
-4.87/12 58} 33... Qd2+ {(Qxc3) -4.85/12 33} 34. Kf1 {-4.97/11 35} 34... h4 {
-5.00/12 75} 35. c4 {(Qb7+) -5.41/10 29} 35... h3 {-5.62/10 43} 36. Qb6+ {
-9.47/12 99} 36... Kc2 {-9.20/11 319} 37. Qg6+ {(Qf2) -10.87/12 61} 37... Qd3+
{(Kc3) -11.42/11 33} 38. Qxd3+ {-#21/14 10} 38... Kxd3 {-21.23/12 1} 39. Kf2 {
(c5) -#19/14 12} 39... g3+ {-#17/15 366} 0-1
/s
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