Author: Renze Steenhuisen
Date: 06:40:43 11/03/05
Go up one level in this thread
On November 02, 2005 at 23:30:36, Jon Dart wrote:
>This arose in an offline test game:
>[D] 5R2/r5k1/3p2b1/p1pB4/P1P2R1p/1PP3p1/4r2p/5N1K b - -
>
>Arasan rates Black well ahead according to a static eval,
>but Black is in fact in trouble, and lost after
>Re1 Kg2 Re2+ Kh3 Re4 Bxe4 Bxe4 Nxh2 g2 Nf3 Bxf3 Kh2 ..
>when the Black pawns are blocked. Both the passed pawn
>eval and king safety eval kick in here so it is a bit
>tricky to evaluate. Arasan rates the Black pawns
>too highly in this position.
>
>Crafty 19.17 rates this a slight + for White.
>
>--Jon
Just some input/output:
Crafty v19.6 on a PIV 3GHz with 768MB Hash, 24MB PawnHash, 3-4 men EGTBs:
clearing hash tables
time surplus 0.00 time limit 166666:39 (166666:39)
depth time score variation (1)
1 0.00 -1.31 1. ... Rae7
1-> 0.00 -1.31 1. ... Rae7
2 0.00 -- 1. ... Rae7
2 0.00 -0.14 1. ... Rae7 2. Rg8+ Kh6 3. Rxh4+
2 0.00 -0.42 1. ... Bh7 2. Bg2
2-> 0.01 -0.42 1. ... Bh7 2. Bg2
3 0.01 -0.35 1. ... Bh7 2. Rd8 Bc2 3. Rxd6 Bxb3
4. Rxh4
3-> 0.01 -0.35 1. ... Bh7 2. Rd8 Bc2 3. Rxd6 Bxb3
4. Rxh4
4 0.01 -0.06 1. ... Bh7 2. Rd8 Rae7 3. Rg4+ Bg6
4. Rxd6
4-> 0.02 -0.06 1. ... Bh7 2. Rd8 Rae7 3. Rg4+ Bg6
4. Rxd6
5 0.02 0.06 1. ... Bh7 2. Rd8 Rae7 3. Rxh4 Re1
5 0.03 -0.43 1. ... Be4+ 2. Bxe4 Rxe4 3. Rxe4 Kxf8
4. Nxh2 gxh2 5. Kxh2
5-> 0.04 -0.43 1. ... Be4+ 2. Bxe4 Rxe4 3. Rxe4 Kxf8
4. Nxh2 gxh2 5. Kxh2
6 0.05 -- 1. ... Be4+
6 0.05 0.79 1. ... Be4+ 2. Bxe4 Rxe4 3. Rxe4 Kxf8
4. Rxh4 Rg7 5. Nxh2 gxh2 6. Kxh2
6 0.07 0.71 1. ... Bh7 2. Rd8 Re1 3. Rg4+ Kh6 4.
Rxd6+ Kh5 5. Rf4
6 0.14 -0.06 1. ... Re1 2. Kg2 Be4+ 3. Bxe4 Rxe4
4. Rxe4 h3+ 5. Kh1 g2+ 6. Kxh2 Kxf8
6-> 0.15 -0.06 1. ... Re1 2. Kg2 Be4+ 3. Bxe4 Rxe4
4. Rxe4 h3+ 5. Kh1 g2+ 6. Kxh2 Kxf8
7 0.20 -0.01 1. ... Re1 2. Kg2 Re2+ 3. Kh1
7-> 0.27 -0.01 1. ... Re1 2. Kg2 Re2+ 3. Kh1
8 0.48 -0.36 1. ... Re1 2. Kg2 Be4+ 3. Bxe4 Rxe4
4. Rxe4 h3+ 5. Kh1 g2+ 6. Kxh2 Kxf8
7. Ng3 Rg7
8-> 0.56 -0.36 1. ... Re1 2. Kg2 Be4+ 3. Bxe4 Rxe4
4. Rxe4 h3+ 5. Kh1 g2+ 6. Kxh2 Kxf8
7. Ng3 Rg7
9 0.86 -0.13 1. ... Re1 2. Kg2 Be4+ 3. Bxe4 Rxe4
4. Rxe4 h3+ 5. Kh1 g2+ 6. Kxh2 Kxf8
7. Nd2 Rg7 8. Kg1
9-> 1.10 -0.13 1. ... Re1 2. Kg2 Be4+ 3. Bxe4 Rxe4
4. Rxe4 h3+ 5. Kh1 g2+ 6. Kxh2 Kxf8
7. Nd2 Rg7 8. Kg1
10 1.74 -0.23 1. ... Re1 2. Kg2 Be4+ 3. Bxe4 Rxe4
4. Rxe4 h3+ 5. Kh1 g2+ 6. Kxh2 Kxf8
7. Nd2 Re7 8. Rg4 Rg7
10-> 2.14 -0.23 1. ... Re1 2. Kg2 Be4+ 3. Bxe4 Rxe4
4. Rxe4 h3+ 5. Kh1 g2+ 6. Kxh2 Kxf8
7. Nd2 Re7 8. Rg4 Rg7
11 3.72 -0.16 1. ... Re1 2. Kg2 Be4+ 3. Bxe4 Rxe4
4. Rxe4 h3+ 5. Kh1 g2+ 6. Kxh2 Kxf8
7. Ng3 Re7 8. Rf4+ Ke8 9. Nf5 Re6
11-> 4.76 -0.16 1. ... Re1 2. Kg2 Be4+ 3. Bxe4 Rxe4
4. Rxe4 h3+ 5. Kh1 g2+ 6. Kxh2 Kxf8
7. Ng3 Re7 8. Rf4+ Ke8 9. Nf5 Re6
12 9.03 0.09 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Rxe4 g1=Q 7.
Rf3 Kh8 8. Rxh4+ Rh7
12-> 12.24 0.09 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Rxe4 g1=Q 7.
Rf3 Kh8 8. Rxh4+ Rh7
13 18.79 0.17 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Re8 g1=Q 7.
Rg4+ Qxg4+ 8. Nxg4 Bg6 9. Rb8 Re7 10.
Kxh4
13-> 26.65 0.17 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Re8 g1=Q 7.
Rg4+ Qxg4+ 8. Nxg4 Bg6 9. Rb8 Re7 10.
Kxh4
14 38.75 0.17 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Re8 g1=Q 7.
Rg4+ Qxg4+ 8. Nxg4 Bg6 9. Rb8 Re7 10.
Kxh4
14-> 50.67 0.17 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Re8 g1=Q 7.
Rg4+ Qxg4+ 8. Nxg4 Bg6 9. Rb8 Re7 10.
Kxh4
15 1:22 0.08 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Re8 g1=Q 7.
Rg4+ Qxg4+ 8. Nxg4 Bc2 9. Rb8 Re7 10.
Rb6 Kf7 11. Kxh4
15-> 1:43 0.08 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Re8 g1=Q 7.
Rg4+ Qxg4+ 8. Nxg4 Bc2 9. Rb8 Re7 10.
Rb6 Kf7 11. Kxh4
16 2:55 -- 1. ... Re1
16 11:57 0.53 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kh7 10. Rh4+
Kg7 11. Rxh3
16-> 13:22 0.53 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kh7 10. Rh4+
Kg7 11. Rxh3
17 18:00 0.88 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kf7 10. Kxh3
Ke7 11. Rdg8
17-> 21:45 0.88 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kf7 10. Kxh3
Ke7 11. Rdg8
18 24:19 ++ 1. ... Re1!!
18 98:10 0.35 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kf7 10. Kxh3
Ra8 11. Rxa8 Bxa8 12. Kh4
18-> 102:24 0.35 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kf7 10. Kxh3
Ra8 11. Rxa8 Bxa8 12. Kh4
19 114:38 0.51 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kf7 10. Rxd6
Bd7 11. Rxd7+ Rxd7 12. Kxh3 Rd2 13.
Rxg2 Rxg2 14. Kxg2
19-> 124:32 0.51 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kf7 10. Rxd6
Bd7 11. Rxd7+ Rxd7 12. Kxh3 Rd2 13.
Rxg2 Rxg2 14. Kxg2
20 154:07 0.51 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kf7 10. Rxd6
Bd7 11. Rxd7+ Rxd7 12. Kxh3 Rd2 13.
Rxg2 Rxg2 14. Kxg2
20-> 177:15 0.51 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kf7 10. Rxd6
Bd7 11. Rxd7+ Rxd7 12. Kxh3 Rd2 13.
Rxg2 Rxg2 14. Kxg2
21 256:44 0.51 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kf7 10. Rxd6
Bd7 11. Rxd7+ Rxd7 12. Kxh3 Rd2 13.
Rxg2 Rxg2 14. Kxg2
21-> 353:09 0.51 1. ... Re1 2. Kg2 Re2+ 3. Kh3 Re4 4.
Bxe4 Bxe4 5. Nxh2 g2 6. Nf3 Bxf3 7.
Kh2 Bc6 8. Rd8 h3 9. Rg4+ Kf7 10. Rxd6
Bd7 11. Rxd7+ Rxd7 12. Kxh3 Rd2 13.
Rxg2 Rxg2 14. Kxg2
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