Desperadoturm (zum Testen)

By Michael Scheidl Date 2011-12-26 07:32

Folgende Stellung aus dem CCC kommt mir bekannt vor, aber Suchmaschinen finden den Forsythestring nicht und in meinen Datenbanken habe ich sie auch nicht.

#18

Das Problem ist natürlich, daß der sK patt steht und sich daher der sT dauernd zum Opfer anbieten kann ohne genommen werden zu dürfen: Ein klassischer Desperadoturm.

Ich finde nach wie vor erstaunlich, wie schnell Engine heutzutage so ein tiefes Matt durchrechnen können, sogar auf meiner "Low End"-Hardware:

Analysis by Fritz 13 (Atom N455/1,66 GHz, 256 MB RAM):

1.Kc4 Rc3+ 2.Kd5 Rc5+ 3.Kd4 Rc4+ 4.Ke5 Re4+ 5.Kd5 Re5+ 6.Kc4 Rc5+ 7.Kd3 Rd5+ 8.Kc3 Rd3+ 9.Kb4 Rd4+ 10.c4 Rxc4+ 11.Ka3 Ra4+ 12.Kb3 Ra3+ 13.Kc4 Ra4+ 14.b4 Rxb4+ 15.Kc3 Rb3+
+- (14.76)   Depth: 10/23   00:00:00 49kN
+- (14.77)   Depth: 21/50   00:00:32 23550kN
1.e3 Rxe3+ 2.c3 Rxc3+ 3.Ka2 Ra3+ 4.Kb1 Ra1+ 5.Kc2 Rc1+ 6.Kd3 Rc3+ 7.Ke2 Re3+ 8.Kf1 Re8 9.g4 Re1+ 10.Kg2 Rg1+ 11.Kf3 Rg3+ 12.Ke2 Re3+ 13.Kd1 Re1+ 14.Kc2 Rc1+ 15.Kb3
+- (#18)   Depth: 21/50   00:00:33 23926kN
+- (#18)   Depth: 21/50   00:00:34 24564kN, tb=3

Analysis by Hiarcs 12:

1.Ka4 Rf4+ 2.Kb5 Rf5+ 3.Kb4 Rf4+ 4.Kc5 Rf5+ 5.Kd4 Rf4+ 6.Kd5 Rf5+
+- (15.64)   Depth: 11/30   00:00:00 71kN
+- (9.07)   Depth: 16/46   00:00:24 10065kN
1.e3 Rxe3+ 2.c3 Rxc3+ 3.Ka2 Ra3+ 4.Kb1 Ra1+ 5.Kc2 Rc1+ 6.Kd3 Rc3+ 7.Ke2 Re3+ 8.Kf1 Re8 9.g4 Re1+ 10.Kg2 Rg1+ 11.Kf3 Rg3+ 12.Ke2 Re3+ 13.Kd1 Re1+ 14.Kc2 Rc1+ 15.Kb3 Rc3+ 16.Ka2 Rxc7 17.Rh8+
+- (9.08)   Depth: 16/46   00:00:24 10213kN
+- (#18)   Depth: 25/47   00:00:37 14354kN, tb=8

Analysis by Strelka 5.1:

1.Kc4 Rf4+ 2.Kd5 Rd4+ 3.Ke5 Rd5+ 4.Ke6 Rd6+ 5.Kf5 Rf6+ 6.Ke4 Re6+ 7.Kf3 Rf6+ 8.Ke3 Re6+ 9.Kf4 Re4+ 10.Kg5 Rg4+ 11.Kf5 Rf4+ 12.Ke5 Re4+ 13.Kf6 Rf4+ 14.Ke7 Re4+ 15.Kd6 Rd4+ 16.Kc5 Rd5+ 17.Kb4 Rd4+ 18.c4 Rxc4+ 19.Ka3 Ra4+ 20.Kb3 Rb4+ 21.Kc3 Rc4+ 22.Kd3 Rd4+ 23.Kc2 Rxd2+ 24.Kc3 Rd3+ 25.Kb4 Rd4+ 26.Ka3 Ra4+ 27.Kb3
+- (20.49)   Depth: 7   00:00:00 3kN
+- (13.58)   Depth: 25   00:00:08 3254kN
1.e3 Rxe3+ 2.c3 Rxc3+ 3.Ka2 Ra3+ 4.Kb1 Ra1+ 5.Kc2 Rc1+ 6.Kd3 Rc3+ 7.Ke2 Re3+ 8.Kf1 Re8 9.g4 Re1+ 10.Kg2 Rg1+ 11.Kf3 Rg3+ 12.Ke2 Re3+ 13.Kd1 Re1+ 14.Kc2 Rc1+ 15.Kb3 Rc3+ 16.Ka2 Rxc7 17.Rh8+ Rc8 18.Rxc8#
+- (#18)   Depth: 25   00:00:10 4398kN
+- (#18)   Depth: 34   00:00:29 14822kN

ChestUCI verifiziert das #18 (Normalmodus):

Code:

WinCHEST Ver.3.19i+, 08-Mar-2011
Options = -M64 -Z18 -eL -U -0 -5 -rS
Input file: STDIN
Reading job:
% created by ChestUCI Ver.5.2
W:  Kb3 Rh3 Pb2 Pb6 Pc2 Pc7 Pd2 Pe2 Pf2 Pg3 (10)
B:  Ka8 Rf3 Pb7 (3)
FEN: k7/1pP5/1P6/8/8/1K3rPR/1PPPPP2/8 w - -
analysing (mate in 18 moves):
Solution (in 18 moves):
  e2e3
Time (virt) = 907.110 sec (ca. 15.1 min)

Event:

Ort:

Datum:

Weiss:

Schwarz:

Ergebnis

Board

By Thomas Koehler Date 2011-12-26 10:11

Hallo Michael,

Stocki (Lieblingssetting) braucht nur 2152 Knoten

k7/1pP5/1P6/8/8/1K3rPR/1PPPPP2/8 w - - 0 1

Analysis by Stockfish 111030 64bitxp155mz1cy:

1.exf3
+- (19.51)   Tiefe: 1/1   00:00:00
1.Kc4 Tf8
+- (12.04)   Tiefe: 2/2   00:00:00
1.Kc4 Tf8 2.f4
+- (12.72)   Tiefe: 3/3   00:00:00
1.Kc4 Tc3+ 2.Kb5 Tb3+ 3.cxb3
+- (20.28)   Tiefe: 4/6   00:00:00
1.Kc4 Tf4+ 2.d4 Txd4+ 3.Kxd4
+- (19.03)   Tiefe: 5/6   00:00:00
1.Kb4 Tf4+ 2.Kb5 Tb4+ 3.Kc5 Tc4+ 4.Kxc4
+- (20.16)   Tiefe: 6/8   00:00:00 3kN
1.Kb4 Tf4+ 2.Kb5 Tf5+ 3.Kc4 Tf4+ 4.d4 Txd4+ 5.Kxd4
+- (19.03)   Tiefe: 7/10   00:00:00 4kN
1.Kb4 Tf4+ 2.Kb5 Tf5+ 3.Kc4 Tf4+ 4.d4 Txd4+ 5.Kc5 Tc4+ 6.Kxc4
+- (18.86)   Tiefe: 8/10   00:00:00 6kN
1.Kb4 Tf4+ 2.Kc5 Tf5+ 3.Kd4 Tf4+ 4.Kd3 Tf8 5.f4 Tg8 6.Th1 Txg3+ 7.e3 Txe3+ 8.dxe3
+- (18.22)   Tiefe: 9/16   00:00:00 10kN
1.Kb4 Tb3+ 2.Kc5 Tb5+ 3.Kc4 Tb4+ 4.Kd5 Tb5+ 5.Ke4 Tb4+ 6.d4 Txd4+ 7.Ke5 Te4+ 8.Kxe4
+- (19.03)   Tiefe: 10/17   00:00:00 17kN
1.Kb4 Tf4+ 2.Kc5 Tf5+ 3.Kd4 Tf4+ 4.gxf4
+- (19.43)   Tiefe: 11/20   00:00:00 36kN
1.Kb4 Tf4+ 2.Kc5 Tf5+ 3.Kd6 Td5+ 4.Ke6 Te5+ 5.Kf6 Te6+ 6.Kf7 Tf6+ 7.Ke7 Tf7+ 8.Ke8 Txc7 9.bxc7
+- (18.98)   Tiefe: 12/22   00:00:00 50kN
1.Kb4 Tf4+ 2.Kc5 Tc4+ 3.Kd6 Tc6+ 4.Ke7 Te6+ 5.Kd7 Te7+ 6.Kd6 Te6+ 7.Kc5 Tc6+ 8.Kb5 Tc5+ 9.Ka4 Tc4+ 10.b4 Txb4+ 11.Kxb4
+- (18.98)   Tiefe: 13/22   00:00:00 79kN
1.Kb4 Tf4+ 2.Kc5 Tc4+ 3.Kd6 Tc6+ 4.Kd7 Td6+ 5.Ke7 Te6+ 6.Kf7 Tf6+ 7.Kg7 Tf7+ 8.Kg6 Tf6+ 9.Kh5 Tf5+ 10.Kh4 Tf4+ 11.g4 Txg4+ 12.Kxg4
+- (18.86)   Tiefe: 14/23   00:00:00 92kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Kd4 Tc4+ 7.Ke5 Tc5+ 8.Kd6 Tc6+ 9.Kd7 Txb6 10.Th8+ Ka7 11.c8D Txb2 12.Dc5+
+- (18.74)   Tiefe: 15/30   00:00:00 157kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Kd4 Tc4+ 7.Ke5 Tc5+ 8.Kd6 Tc6+ 9.Kd7 Td6+ 10.Ke7 Te6+ 11.Kd8 Td6+ 12.Ke8 Tc6 13.Kf7 Tf6+ 14.Kxf6
+- (17.77)   Tiefe: 16/30   00:00:00 171kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Kd4 Tc4+ 7.Ke5 Tc5+ 8.Kf6 Tc6+ 9.Kg5 Tc5+ 10.Kh4 Tc4+ 11.Kh5 Tc5+ 12.Kg4 Tg5+ 13.Kf3 Tg8 14.Th1 Txg3+ 15.Kf4 Tf3+ 16.Kxf3
+- (17.49)   Tiefe: 17/36   00:00:00 210kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Ke4 Tc4+ 7.Kf5 Tf4+ 8.Kg5 Tf5+ 9.Kg4 Tg5+ 10.Kf3 Tg8 11.Th1 Txg3+ 12.Kf4 Tf3+ 13.Kxf3
+- (17.49)   Tiefe: 18/36   00:00:00 233kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Ke4 Tc4+ 7.Kf5 Tc5+ 8.Kg6 Tc6+ 9.Kg7 Tg6+ 10.Kf7 Tf6+ 11.Ke7 Te6+ 12.Kd7 Te7+ 13.Kd6 Te6+ 14.Kxe6
+- (14.62)   Tiefe: 19/36   00:00:00 296kN
1.Kb4 Tb3+ 2.Kc5 Tc3+ 3.Kd4 Td3+ 4.Ke5 Td5+ 5.Ke6 Te5+ 6.Kf6 Tf5+ 7.Kg7 Tg5+ 8.Kh7 Tg7+ 9.Kh6 Tg6+ 10.Kh5 Tg5+ 11.Kxg5
+- (12.96)   Tiefe: 20/36   00:00:00 435kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Ke4 Tc4+ 7.Kd5 Td4+ 8.Ke5 Te4+ 9.Kf5 Te5+ 10.Kg6 Te6+ 11.Kf7 Tf6+ 12.Kg7 Tg6+ 13.Kh8 Tg8+ 14.Kh7 Th8+ 15.Kg6 Tg8+ 16.Kf7 Tg7+
+- (13.97)   Tiefe: 21/42   00:00:00 606kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Ke4 Tc4+ 7.Kd5 Td4+ 8.Ke5 Te4+ 9.Kf5 Te5+ 10.Kg6 Te6+ 11.Kf7 Tf6+ 12.Ke7 Te6+ 13.Kd7 Td6+ 14.Ke8 Te6+ 15.Kf7
+- (14.02)   Tiefe: 22/42   00:00:00 630kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Ke4 Tc4+ 7.Kd5 Td4+ 8.Ke5 Te4+ 9.Kf5 Te5+ 10.Kf4 Tf5+ 11.Ke3 Tf3+ 12.Kd4 Tf4+ 13.Kd3 Td4+ 14.Kc2 Txd2+ 15.Kc3 Td3+ 16.Kc4 Td4+
+- (15.79)   Tiefe: 23/43   00:00:00 711kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Ke4 Tc4+ 7.Kd5 Td4+ 8.Ke5 Te4+ 9.Kf5 Te5+ 10.Kf4 Tf5+ 11.Ke3 Tf3+ 12.Kd4 Tf4+ 13.Kd3 Td4+ 14.Kc2 Txd2+ 15.Kc3 Td3+ 16.exd3
+- (15.71)   Tiefe: 24/43   00:00:00 749kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Ke4 Tc4+ 7.Kd5 Td4+ 8.Ke5 Td5+ 9.Ke4 Td4+ 10.Kf3 Tf4+ 11.Ke3 Te4+ 12.Kd3 Td4+ 13.Kc2 Txd2+ 14.Kc3 Td3+ 15.Kb4 Td4+ 16.Kb5 Td5+
+- (15.27)   Tiefe: 25/48   00:00:00 1048kN
1.c3 Txc3+ 2.Ka2 Ta3+ 3.Kb1 Ta1+ 4.Kc2 Tc1+ 5.Kd3 Tc3+ 6.Ke4 Tc4+ 7.Ke5 Tc5+ 8.Kf4 Tc4+ 9.Kg5 Tc5+ 10.Kg4 Tc4+ 11.e4 Txe4+ 12.Kf3 Tf4+ 13.Ke3 Tf3+ 14.Ke2 Txf2+ 15.Ke3 Te2+ 16.Kd3 Txd2+
+- (14.30)   Tiefe: 26/52   00:00:01 1439kN
1.e3 Txe3+ 2.c3 Txc3+ 3.Ka2 Ta3+ 4.Kb1 Ta1+ 5.Kc2 Tc1+ 6.Kd3 Tc3+ 7.Ke2 Te3+ 8.Kf1 Te1+ 9.Kg2 Tg1+ 10.Kf3 Txg3+ 11.Ke2 Te3+ 12.Kd1 Te1+ 13.Kc2 Tc1+ 14.Kb3 Tc3+ 15.Kxc3
+- (16.04)   Tiefe: 28/54   00:00:01 1721kN
1.e3 Txe3+ 2.c3 Txc3+ 3.Ka2 Ta3+ 4.Kb1 Ta1+ 5.Kc2 Tc1+ 6.Kd3 Tc3+ 7.Ke2 Te3+ 8.Kf1 Te8 9.g4 Te1+ 10.Kg2 Tg1+ 11.Kf3 Tg3+ 12.Ke2 Te3+ 13.Kd1 Te1+ 14.Kc2 Tc1+ 15.Kb3 Tc3+ 16.Ka2 Txc7
+- (#18)   Tiefe: 30/54   00:00:01 2152kN
1.e3 Txe3+ 2.c3 Txc3+ 3.Ka2 Ta3+ 4.Kb1 Ta1+ 5.Kc2 Tc1+ 6.Kd3 Tc3+ 7.Ke2 Te3+ 8.Kf1 Te8 9.g4 Te1+ 10.Kg2 Tg1+ 11.Kf3 Tg3+ 12.Ke2 Te3+ 13.Kd1 Te1+ 14.Kc2 Tc1+ 15.Kb3 Tc3+ 16.Ka2 Txc7
+- (#18)   Tiefe: 31/54   00:00:01 2186kN
1.e3 Txe3+ 2.c3 Txc3+ 3.Ka2 Ta3+ 4.Kb1 Ta1+ 5.Kc2 Tc1+ 6.Kd3 Tc3+ 7.Ke2 Te3+ 8.Kf1 Te8 9.g4 Te1+ 10.Kg2 Tg1+ 11.Kf3 Tg3+ 12.Ke2 Te3+ 13.Kd1 Te1+ 14.Kc2 Tc1+ 15.Kb3 Tc3+ 16.Ka2 Txc7
+- (#18)   Tiefe: 32/54   00:00:02 2679kN

(Köhler, Wilthen 26.12.2011)

Gruß und schöne RestWeihnachten

By Michael Scheidl Date 2011-12-26 10:41

Sensationelle Zeit!

Aber es waren 2.152.000 Knoten.

Stockfish 111031 braucht ~34 Mio. Knoten:

22/43   0:01   +13.37 1.c3 Rxc3+ 2.Ka2 Ra3+ 3.Kb1 Ra1+ 4.Kc2 Rc1+ 5.Kd3 Rc3+ 6.Ke4 Rc4+ 7.d4 Rxd4+ 8.Ke5 Rd5+ 9.Kf6 Rd6+ 10.Kg5 Rd5+ 11.Kf4 Rd4+ 12.Kf5 Rd5+ 13.Kg6 Rd6+ 14.Kg7 (611.509) 399
(...)
30/44   0:03   +83.68++ 1.e3 Rxe3+ 2.c3 Rxc3+ 3.Ka2 Ra3+ 4.Kb1 Ra1+ 5.Kc2 Rc1+ 6.Kd3 Rc3+ 7.Ke2 Re3+ 8.Kf1 Re1+ 9.Kg2 Rg1+ 10.Kf3 Rxg3+ 11.Ke2 Re3+ 12.Kd1 Re1+ 13.Kc2 Rc1+ 14.Kb3 (1.198.115) 393
31/44   0:51    +M18   1.e3 Rxe3+ 2.c3 Rxc3+ 3.Ka2 Ra3+ 4.Kb1 Ra1+ 5.Kc2 Rc1+ 6.Kd3 Rc3+ 7.Ke2 Re3+ 8.Kf1 Re8 9.g4 Re1+ 10.Kg2 Rg1+ 11.Kf3 Rg3+ 12.Ke2 Re3+ 13.Kd1 Re1+ 14.Kc2 (34.253.213) 668
(...)
35/44   1:02 +M18   1.e3 Rxe3+ 2.c3 Rxc3+ 3.Ka2 Ra3+ 4.Kb1 Ra1+ 5.Kc2 Rc1+ 6.Kd3 Rc3+ 7.Ke2 Re3+ 8.Kf1 Re8 9.g4 Re1+ 10.Kg2 Rg1+ 11.Kf3 Rg3+ 12.Ke2 Re3+ 13.Kd1 Re1+ 14.Kc2 (40.337.975) 641
best move: e2-e3 time: 1:12.868 min n/s: 641.782 nodes: 40.337.975

By Olaf Jenkner Date 2011-12-26 10:56

Die Aufgabe ist von Otto Gallischek und war vor ca. 18 Jahren in der CSS.

By Olaf Jenkner Date 2011-12-26 10:59

Gustav findet die Lösung mit automatischen Parametern in 0,45 s.
Die vollständige Brute-Force-Prüfung dauert 11 s.

By Thomas Koehler Date 2011-12-26 12:00

wissenschaftl. gesehen ja. Ich dachte, in Insider-Sprache bezeichnet man die kilo nodes "kn" als "Knoten" (statt eigentlich KiloKnoten). Naja wie auch immer --

Im default-Setting haben SF 111026 und SF111030 eine Verklemmung und zögern mit der Ausgabe (beide 34.822 kn, 24 s).
SF111031 ist ME ohnehin schwächer.