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Subject: Endgameposition - here are Tablebases stronger :)

Author: Eduard Nemeth

Date: 20:47:50 05/16/02


Here you can see the advanced from tablebases.

(german: In der folgenden Stellung zeigt sich der Vorteil der TBs)


[D]R7/8/8/Rn6/2k1PK2/p7/8/1r6 w - - 0 1

After Rxb5 game is end!

(german: Der Einschlag Rxb5 entscheidet mit den Tablebases sofort. Die Programme
sind nur mit den Tablebases in der Lage so Schach zus spielen, oder gibt es auch
eine Ausnahme ohne die TBs?



Yace 0.99.56 under Arena:

without TBs:

Yace:
T1 00:00 1,18 Txb5 Txb5 Txa3 Th5 Ta8 Th4 Kf5 Th5 Kg4 Th1 Td8
T1 00:00 1,42 Tc8 Kd4
T1 00:00 1,43 Td8
T2 00:00 1,23 Td8 Te1
T2+ 00:00 1,24 Tc8 Kb4 Txb5 Ka4
T2 00:00 1,60 Tc8 Kd4 Ta4 Kd3 e5
T3 00:00 1,41 Tc8 Kd3 Ke5 Ke3
T4 00:00 1,51 Tc8 Kd4 Ta4 Kd3 Tc5 Ke2 Td5
T5 00:00 1,50 Tc8 Kd4 Ta4 Kd3 Tc5 Ke2 Tc2 Kd3 Tac4
T6 00:00 1,48 Tc8 Kd4 Ta4 Kd3 Tc5 Tb2 Td5 Kc3 e5 a2 e6
T7 00:01 1,60 Tc8 Kd4 Ta4 Kd3 e5 Tf1 Kg5 Ke2 e6 Tg1 Kf6 Tf1 Ke7 Te1
T8 00:02 1,72 Tc8 Kd4 Ta4 Kd3 e5 Tf1 Kg5 Ke3 e6 Tg1 Kf6 Tf1 Ke7 Te1 Td8
T9 00:06 1,78 Tc8 Kd4 Ta4 Kd3 e5 Th1 Kg5 Ke3 e6 Th7 Kf6 Tb7
T10 00:15 1,81 Tc8 Kd4 Ta4 Kd3 e5 Th1 Kg5 Ke3 e6 Th7 Tb8 Tg7 Kf6 Ta7
T11 01:05 1,80 Tc8 Kd4 Ta4 Kd3 e5 Th1 Ta5 Tf1 Kg4 Tg1 Kh5 Ta1 e6 Th1 Kg6 Tg1 Kh6

with Tbs:

Yace:
T1 00:00 1,04 Txb5 Txb5 Txa3
T1 00:00 1,07 Txa3 Sxa3 Txa3
T1 00:00 1,42 Tc8 Kd4
T1 00:00 1,43 Td8
T2 00:00 1,23 Td8 Te1
T2+ 00:00 1,24 Tc8 Kb4 Txb5 Ka4
T2 00:00 1,60 Tc8 Kd4 Ta4 Kd3 e5
T3 00:00 1,41 Tc8 Kd3 Ke5 Ke3
T4 00:00 1,51 Tc8 Kd4 Ta4 Kd3 Tc5 Ke2 Td5
T4+ 00:00 1,52 Txa3 Kd4 Td8 Kc4
T4+ 00:00 1,81 Txa3 Kd4 Td8 Kc4
T4+ 00:00 2,81 Txa3 Tf1 Tf3 Txf3 Kxf3 Sd4 Kg3 Se2 Kh3
T4 00:00 3,01 Txa3 Tf1 Tf3 Txf3 Kxf3 Sd4 Kf4 Kc5
T5 00:00 3,18 Txa3 Tf1 Tf3 Te1 Tc8 Kd4 Td8 Kc5 Tfd3 Te2
T6 00:00 3,21 Txa3 Tf1 Ke5 Te1 Tc8 Kb4 Taa8 Sc3
T6+ 00:00 3,22 Txb5 Tf1 Ke5 Tg1 Tba5 Kb3
T6+ 00:00 3,58 Txb5 Tf1 Ke5 Tg1 Tba5 Kb3
T6+ 00:00 4,58 Txb5 Tf1 Ke5 Tg1 Tba5 Tf1
T6 00:00 4,91 Txb5 Tf1 Ke5 Th1 Td5 Th5 Kd6 Th6 Kd7 Th3
T7 00:00 4,97 Txb5 Tf1 Ke5 Th1 Tb7 Th5 Ke6 Th6 Kf5 Th3 e5
T8+ 00:00 5,37 Txb5 Tf1 Ke5 Th1 Tba5 Kb4 Txa3 Kc4
T8+ 00:00 6,37 Txb5 Tf1 Ke5 Th1 Ta4 Kd3 Txa3 Ke2 Tba5 Th5 Ke6 Th6 Ke7 Tf6
T8 00:01 6,52 Txb5 Tf1 Ke5 Tf3 Txa3 Tf8 Td5 Te8 Kf4 Tf8 Ke3 Tf6
T9 00:03 6,72 Txb5 Tf1 Ke5 Te1 Ta4 Kd3 Txa3 Kc4 Tb1 Te2 Tc1 Kb5
T10 00:15 6,76 Txb5 Tf1 Ke5 Ta1 Txa3 Te1
T11+ 00:18 7,16 Txb5 Tf1 Ke5 a2 Txa2 Te1 Tb1 Te3 Tc2 Tc3 Txc3 Kxc3 Ta1 Kd3 Tc1
Ke3
T11 00:25 7,16 Txb5 Tf1 Ke5 Th1 Ta4 Kd3 Txa3 Kc2 Tb2 Kc1 Tb5 Th5 Kd4 Txb5 e5
T12+ 00:29 7,56 Txb5 Tf1 Ke5 Tf5 exf5 Kd3
T12+ 00:30 8,56 Txb5 Tf1 Ke5 Tf8 Txf8 a2 Ta5 Kc3




Analysis by Fritz 7, with Tbs:

1.Txb5 Tf1+ 2.Ke5 Tf8 3.Txa3 Te8+ 4.Kf4 Txe4+ 5.Kxe4 Kxb5 6.Tc3 Kb4
+- (6.03) Tiefe: 10/22 00:00:03 737kN, tb=115
1.Txb5 Tf1+ 2.Ke5 Tf8 3.Txa3 Te8+ 4.Kd6 Td8+ 5.Ke7 Th8 6.Tba5 Th7+ 7.Kf6
+- (6.22) Tiefe: 11/22 00:00:05 1215kN, tb=219

now without TBs:


Analysis by Fritz 7:

1.Tc8+ Kd4 2.Ta4+ Kd3 3.e5 Th1 4.Kg5 Tg1+ 5.Kf6
+- (2.69) Tiefe: 15/33 00:03:34 73227kN
1.Tc8+ Kd4 2.Ta4+ Kd3 3.e5 Th1 4.Kg5 Tg1+ 5.Kf6
+- (2.91) Tiefe: 16/36 00:08:30 172755kN

Eduard




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