Endgame progress test in Uri's Grob position.

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Eelco de Groot
Posts: 4556
Joined: Sun Mar 12, 2006 2:40 am
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Endgame progress test in Uri's Grob position.

Post by Eelco de Groot »

Just a test to see what Rebel 14.1 is thinking here. It is slightly modified search Rebel 14.1, Net from the version before the trainer change but that probably does not matter much. No tablebases involved, just one thread Haswell 3093 MHz Dell from 280 € and small 256 Mb hashtable.


[fen]6k1/6p1/5p1p/5r1P/3p4/8/3rPP1R/4RK2 w - -[/fen]

Engine: Rebel 14.1 MOD (256 MB)
gemaakt door Fabien Letouzey, Pawel Koziol, Chris Whittington en Ed Schröder

Code: Select all

14/43  0:01   -4.29    1.Tc1 d3 2.exd3 Txd3 3.Te1 Kh7 4.Th4 Ta3 
                       5.Te2 Tg5 6.Te1 Ta2 7.Te7 Ta1+ 8.Ke2 (1.667.689) 980 

15/43  0:02   -4.39    1.Tc1 d3 2.exd3 Txd3 3.Te1 Kh7 4.Te7 Tg5 
                       5.Th4 Td2 6.Tc7 Ta2 7.Td7 Ta1+ 8.Ke2 (2.248.141) 990 

16/43  0:03   -4.40    1.Tc1 d3 2.exd3 Txd3 3.Tc7 Tg5 4.Ke2 Ta3 
                       5.Te7 Kh7 6.Te3 Taa5 7.Te7 Ta2+ 
                       8.Kf3 Ta3+ 9.Te3 Ta4 (3.040.043) 990 

16/49  0:03   -4.39    1.Ta1 d3 2.exd3 Txd3 3.Ta7 Tg5 4.Th4 Td2 
                       5.Tb7 Kh7 6.Tf7 Tdd5 (3.729.653) 990 

17/49  0:06   -4.54    1.Ta1 d3 2.exd3 Txd3 3.Ta8+ Kh7 
                       4.Ta4 Tdd5 5.Tah4 Td2 6.T4h3 Tg5 
                       7.Th4 Ta2 8.T4h3 Te5 9.Td3 Taa5 
                       10.Kg2 Tf5 11.Tdh3 Tg5+ 12.Kf3 (6.453.082) 991 

17/49  0:08   -4.33    1.Tb1 d3 2.exd3 Txd3 3.Tb7 Tg5 4.Th4 Kh7 
                       5.Ke1 Ta3 6.Ke2 Ta2+ 7.Kf1 Ta1+ 
                       8.Ke2 Ta6 (7.969.999) 987 

18/49  0:08   -4.33    1.Tb1 d3 2.exd3 Txd3 3.Tb7 Tg5 4.Th4 Kh7 
                       5.Tf4 Td1+ 6.Ke2 Td6 7.Th4 Te5+ 
                       8.Kf3 Td3+ 9.Kg2 Tg5+ 10.Kf1 Td2 
                       11.Tc7 Ta2 12.Tf4 Ta6 13.Th4 Td6 (8.224.611) 987 

19/49  0:08   -4.33    1.Tb1 d3 2.exd3 Txd3 3.Tb7 Tg5 4.Th4 Kh7 
                       5.Tf4 Td1+ 6.Ke2 Td6 7.Th4 Te5+ 
                       8.Kf3 Td3+ 9.Kg2 Tg5+ 10.Kf1 Td2 
                       11.Te7 Td6 12.Ke1 Tdd5 13.Tb7 Tc5 
                       14.Kf1 (8.431.920) 987 

20/63  0:09   -4.37    1.Tb1 d3 2.exd3 Txd3 3.Tb7 Tg5 4.Th4 Ta3 
                       5.Ke2 Te5+ 6.Kf1 Ta1+ 7.Kg2 Tg5+ 
                       8.Kf3 Ta2 9.Th2 Ta3+ 10.Ke2 Te5+ 
                       11.Kf1 Ta1+ 12.Kg2 Tg5+ 13.Kf3 Kh7 
                       14.Th4 (9.640.592) 987 

21/63  0:18   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.Tb4 Ta1+ 
                       7.Kg2 Tg5+ 8.Kf3 Ta3+ 9.Ke2 Taa5 
                       10.Tbh4 Tgf5 11.Kf1 Tab5 12.T4h3 Tb2 
                       13.Kg1 Tg5+ 14.Tg2 (18.365.866) 996 

22/63  0:20   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Tg5 9.Th4 Ta2 
                       10.Tc4 Tf5 11.Tg4 Ta1+ 12.Kg2 Taa5 
                       13.Tgh4 Tad5 (20.402.463) 989 

23/63  0:21   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Tg5 9.Ke2 Ta2+ 
                       10.Ke3 Ta3+ 11.Ke2 Ta1 12.Tc3 Ta2+ 
                       13.Kf3 Taa5 14.Tc7 (21.042.467) 987 

24/63  0:27   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Tg5 9.Ke2 Ta2+ 
                       10.Kf1 Td2 11.Th4 Tf5 12.Te4 Tdd5 
                       13.Teh4 Tc5 14.Kg2 (27.305.639) 987 

25/63  0:29   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Tg5 9.Ke2 Ta2+ 
                       10.Kf1 Td2 11.Th4 Tf5 12.T4h3 Td1+ 
                       13.Kg2 Tdd5 14.Th4 (28.600.013) 982 

26/63  0:31   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Tg5 9.Ke2 Ta2+ 
                       10.Kf1 Td2 11.Th4 Tf5 12.T4h3 Td1+ 
                       13.Kg2 Tdd5 14.Th4 (30.423.493) 975 

27/63  0:35   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Tg5 9.Ke2 Ta2+ 
                       10.Kf1 Td2 11.Th4 Tf5 12.T4h3 Kg8 
                       13.Tg3 Td1+ 14.Kg2 (34.191.246) 968 

28/63  0:43   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Tg5 9.Ke2 Ta2+ 
                       10.Kf1 Td2 11.Th4 Tf5 12.T4h3 Te5 
                       13.Kg2 Tg5+ 14.Kf3 (41.681.609) 965 

29/63  0:55   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Tg5 9.Ke2 Ta2+ 
                       10.Kf1 Td2 11.Th4 Tf5 12.T4h3 Ta2 
                       13.Th4 Ta1+ 14.Ke2 (52.812.827) 954 

30/63  1:06   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kf1 Tg5 11.Ke2 Kf7 12.Kf3 Ta5 
                       13.Ke2 Kg8 14.Kf3 (63.498.112) 953 

31/63  1:18   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kf1 Tg5 11.Ke2 Kf7 12.Kf3 Ta5 
                       13.Ke2 Kg8 14.Kf3 (74.320.307) 948 

32/63  1:52   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (106.468.621) 946 

33/63  2:21   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (132.810.467) 937 

34/67  3:18   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (186.589.257) 938 

35/67  3:46   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (212.188.434) 936 

36/67  4:21   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (245.036.832) 938 

37/67  6:22   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (359.800.597) 939 

38/67  7:04   -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (398.179.239) 938 

39/68  10:14  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (577.179.829) 939 

40/68  11:29  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (647.988.995) 939 

41/71  12:57  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (728.746.612) 937 

42/81  14:14  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (803.083.905) 939 

43/81  17:04  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (963.333.992) 940 

44/81  24:28  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (1.382.951.896) 942 

45/81  27:33  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (1.560.122.445) 943 

46/81  35:38  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (2.027.922.902) 948
Rebel thinks positionally this is looking bad for White, but the score is consistent and the PV as well. There is only a verification search (in Fruit, in the default setting 'Endgame') if side to move has a King and one piece or no piece, so there is very little checking for Zugzwang in the Nullmove search. I am not sure if pawns count as piece, my guess is not so with two pieces it might cover the position. I will try a version with King and 2 pieces to see if that slows it down much.
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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User avatar
Eelco de Groot
Posts: 4556
Joined: Sun Mar 12, 2006 2:40 am
Full name:   

Re: Endgame progress test in Uri's Grob position.

Post by Eelco de Groot »

Rebel saw no changes till iteration 58 when I stopped the search. So if there is no fortress it can only be through Zugzwang I think in such a position with few pieces. Personally I think it a bit unlikely.

Code: Select all

(continued from above)

47/83  53:59  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (3.054.320.247) 942 

48/83  60:57  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (3.456.566.218) 945 

49/88  70:15  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (3.995.739.269) 947 

50/88  80:09  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (4.596.234.191) 955 

51/97  98:16  -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (5.686.566.423) 964 

52/98  113:03 -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (6.583.476.810) 970 

53/98  131:40 -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (7.681.553.696) 972 

54/98  158:21 -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (9.303.064.130) 979 

55/103 254:54 -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (14.582.587.594) 953 

56/107 336:35 -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (19.270.287.279) 954 

57/108 391:47 -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (22.610.166.885) 961 

58/108 612:05 -4.54    1.Tb1 d3 2.exd3 Txd3 3.Tb8+ Kh7 
                       4.Tb4 Td2 5.Tbh4 Ta2 6.T4h3 Ta1+ 
                       7.Kg2 Taa5 8.Kf1 Kg8 9.Kg2 Tac5 
                       10.Kg3 Tg5+ 11.Kf3 Tb5 12.Ke3 Tbe5+ 
                       13.Kf4 Ta5 14.Kf3 (35.498.582.588) 966 

beste zet: Te1-b1  tijd: 618:21.672 min  n/s: 966.954  CPU 100.0%   n/s(1CPU): 966.954   nodes: 35.875.550.000
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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peter
Posts: 3167
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Endgame progress test in Uri's Grob position.

Post by peter »

Hi Eelco!
Eelco de Groot wrote: ↑Wed Feb 02, 2022 4:40 pm [fen]6k1/6p1/5p1p/5r1P/3p4/8/3rPP1R/4RK2 w - -[/fen]
YADREG (yet another drawn rook endgame) I thought at first glance, but then Crystal, after some Forward- Backward with 6men Syzygys came to positions in output- line that seemed to show some progress, like here:

6k1/6p1/5p1p/5r1P/3p4/8/3rPP1R/4RK2 w - - 0 1

Analysis by Crystal 251221:

1.Rc1 Re5 2.f4 Re3 3.Rg2 Rc3 4.Ra1 d3 5.e3 Rdc2 6.Rd1 Rb3 7.Rgd2 Rbb2 8.Rxd3 Kh7 9.Rd8 Rf2+ 10.Kg1 Rh2 11.R8d7 Rbg2+ 12.Kf1 Rc2 13.Kg1 Rxh5 14.R1d2 Rxd2 15.Rxd2 Rh3 16.Re2 g5 17.fxg5 fxg5 18.Kg2 Rh4 19.Rc2 Re4 20.Rc7+ Kg6 21.Rc6+ Kh5 22.Kf3 Re5 23.Rc3 Ra5 24.Rc4 Rf5+ 25.Kg3 Kg6 26.Rc6+ Rf6 27.Rc8 Rb6 28.Re8 h5 29.Rg8+ Kf6 30.Rf8+ Kg7 31.Ra8 Rc6 32.Kf3 Re6 33.Rc8 Ra6 34.Re8 Kg6 35.Kg3 Ra1 36.Rg8+ Kf6 37.Rf8+ Kg7 38.Rb8 h4+ 39.Kg2
-+ (-3.04) Depth: 41/96 00:02:52 8097MN, tb=12157390

After 17 moves won 7men position is reached regards
Peter.
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Paloma
Posts: 1163
Joined: Thu Dec 25, 2008 9:07 pm

Re: Endgame progress test in Uri's Grob position.

Post by Paloma »

Detected with 7-men lichess?

Or access to the Lomonosov endgame databases goes again?
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peter
Posts: 3167
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Endgame progress test in Uri's Grob position.

Post by peter »

Paloma wrote: ↑Thu Feb 03, 2022 8:45 pm Detected with 7-men lichess?

Or access to the Lomonosov endgame databases goes again?
Just evaluated on my own (relying upon eval with 6men loaded) :)
But checked with lichess now too.
Lomonosov still down regards
Peter.
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User avatar
Eelco de Groot
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Joined: Sun Mar 12, 2006 2:40 am
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Re: Endgame progress test in Uri's Grob position.

Post by Eelco de Groot »

Amazing stuff Peter! The road from 7 to 6 men seems long, do you think you would need 7 men here if you wanted proof it is won? Or do you think a score like +5 is possible if you just spent a few days :)

I have some output from Blue Marlin, -not to be confused with Black Marlin, but as far as I know Blue is practically Stockfish if you use it with the Net- no tablebases and just a single thread, 256 Mb hastable. But the score is also going up (for Black).

Thanks!
This is after the first move in the Rebel line 1. Rb1. 1...d3 is a draw says Marlin (-0.78 score all the way from endpoint back to 1...d3, so it is not surprising that in that line Rebel sees no progress anymore, just goes for the biggest score.)


[fen]6k1/6p1/5p1p/5r1P/3p4/8/3rPP1R/1R3K2 b - -[/fen]

Code: Select all

6k1/6p1/5p1p/5r1P/3p4/8/3rPP1R/1R3K2 b - -

Engine: Blue Marlin 14.7 (256 MB)
gemaakt door dorsz and the Stockfish developers (see..

23/33  0:01   -2.17    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th1 f5 8.Th3 Tc2 
                       9.f3 Te3 10.Tg3 d3 11.exd3 Txe1+ 
                       12.Kxe1 Th2 13.Tg1 Txh5 14.Ke2 g5 (1.589.137) 1010 

24/37  0:01   -1.97    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 f5 7.f3 Te3 8.Kf2 Te5 
                       9.Kf1 Td2 10.Tg3 d3 11.exd3 Txe1+ 
                       12.Kxe1 Th2 13.Tg1 Txh5 14.Ke2 Th4 (1.903.001) 1012 

25/36  0:01   -1.97    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th1 f5 8.Th3 Tc2 
                       9.f3 Te3 10.Kf2 Te5 11.Kf1 Td2 
                       12.Tg3 d3 13.exd3 Txe1+ 14.Kxe1 Th2 (1.986.212) 1015 

26/39  0:02   -1.97    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.f3 Te5 
                       9.Th3 Te3 10.Tg3 Ta2 11.Kf2 Te5 
                       12.Kf1 d3 13.exd3 Txe1+ 14.Kxe1 Th2 (2.160.767) 1017 

27/39  0:02   -1.81    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Ta2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Kf2 Te5 13.Kf1 d3 14.exd3 Txe1+ (2.707.520) 1024 

28/44  0:02   -2.09    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Ta2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Th3 Tb2 13.Kf2 Te5 14.Kf1 Td2 (3.009.938) 1035 

29/40  0:03   -1.76--  1...Te5 2.Te1 (3.404.043) 1031 

29/40  0:04   -1.91++  1...Te5 (4.196.816) 1016 

29/40  0:04   -2.01    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Tc2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Kf2 Te5 13.Kf1 d3 14.exd3 Txe1+ (4.472.916) 1014 

30/39  0:04   -2.11++  1...Te5 (4.840.087) 1014 

30/44  0:05   -2.26++  1...Te5 (5.275.637) 1019 

30/44  0:05   -1.82--  1...Te5 2.Te1 (5.474.050) 1019 

30/52  0:07   -1.53--  1...Te5 2.Te1 (7.296.171) 1013 

30/52  0:07   -1.83++  1...Te5 (8.037.288) 1007 

30/52  0:08   -2.19    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Kg8 10.Kf3 f5 11.Ke3 Ta2 12.Kf4 Te7 
                       13.Txd3 fxe4 14.Tde3 Txf2+ (8.332.465) 1008 

31/39  0:08   -1.90--  1...Te5 2.Te1 (8.665.201) 1008 

31/43  0:08   -1.74--  1...Te5 2.Te1 (8.795.426) 1010 

31/43  0:09   -1.53--  1...Te5 2.Te1 (9.327.223) 1006 

31/55  0:11   -1.71++  1...Te5 (10.869.421) 984 

31/55  0:11   -1.73    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Ta2 10.Txd3 Txh5 11.Tb1 Tg5+ 
                       12.Tg3 h5 13.Tb7+ Kg6 14.Tb8 Kh7 (11.047.905) 981 

32/45  0:11   -1.62    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Ta2 10.Txd3 Txh5 11.Tb1 Tg5+ 
                       12.Tg3 h5 13.Tb7+ Kg6 14.Tb8 Kh7 (11.598.026) 971 

33/47  0:14   -1.79++  1...Te5 (13.689.843) 972 

33/47  0:14   -1.92++  1...Te5 (13.795.745) 973 

33/47  0:14   -2.12++  1...Te5 (13.918.749) 975 

33/47  0:14   -1.97    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tc2 
                       5.Th2 Ta2 6.Th3 f5 7.e3 Ta3 8.Kg2 Kf6 
                       9.Kf3 Tg4 10.Tc1 dxe3 11.fxe3 Te4 
                       12.Te1 Kg5 13.Tg1+ Tg4 14.Tb1 Tf4+ (14.291.355) 977 

34/51  0:14   -1.83--  1...Te5 2.Te1 (14.633.684) 979 

34/51  0:15   -1.68--  1...Te5 2.Te1 (15.042.646) 981 

34/51  0:19   -1.50    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tc2 
                       5.Th2 Ta2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Ta2 10.Txd3 Txh5 11.Tb1 Tg5+ 
                       12.Tg3 h5 13.Tb7+ Kg6 14.Tb6 Kh7 (18.946.969) 996 

35/48  0:20   -1.72++  1...Te5 (20.560.795) 995 

35/48  0:21   -1.56    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tc2 
                       5.Th2 Ta2 6.Th3 f5 7.e3 Ta3 8.Kg2 Kf6 
                       9.Kf3 dxe3 10.fxe3 Kg5 11.Tg1+ Tg4 
                       12.Thh1 Tc3 13.Kf2 Tc7 14.Tg3 Tc2+ (21.093.162) 997 

36/47  0:22   -1.74++  1...Te5 (22.543.879) 997 

36/48  0:23   -1.72    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tc2 
                       5.Th2 Ta2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Ta2 10.Txd3 Txh5 11.Tee3 Tg5+ 
                       12.Tg3 h5 13.Txg5 fxg5 14.Td5 Kg6 (23.229.472) 998 

37/45  0:24   -1.56--  1...Te5 2.Te1 (24.381.666) 1000 

37/53  0:26   -1.70++  1...Te5 (26.076.332) 1000 

37/53  0:26   -1.70    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tc2 
                       5.Th2 Ta2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Tb2 10.Txd3 Txh5 11.Td7+ Kg6 
                       12.Tdd1 Thb5 13.Te3 h5 14.Tg3+ Kh7 (26.340.333) 1000 

38/48  0:27   -1.55--  1...Te5 2.Te1 (27.743.205) 1002 

38/48  0:29   -1.57    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tc2 
                       5.Th2 Kg8 6.Th3 Ta2 7.Th2 Tb2 8.Th3 Tc2 
                       9.Th2 Kf7 10.Th3 Td2 11.e3 d3 12.Kg2 Te5 
                       13.e4 Tb2 14.Txd3 Txh5 (29.307.519) 1002 

39/49  0:31   -1.72++  1...Te5 (31.295.778) 1002 

39/51  0:46   -1.86++  1...Te5 (46.459.462) 999 

39/51  0:47   -2.06++  1...Te5 (47.613.647) 999 

39/54  0:48   -1.84    1...Te5 2.Te1 Te4 3.Th3 Ta2 4.Th2 Kf7 
                       5.Th3 f5 6.e3 Ta3 7.Kg2 Tg4+ 8.Kf3 Kf6 
                       9.Tc1 dxe3 10.fxe3 Te4 11.Te1 Kg5 
                       12.Tg1+ Tg4 13.Thh1 Tc3 14.Kf2 Tc7 (48.813.544) 999 

40/55  0:51   -1.74--  1...Te5 2.Te1 (51.091.079) 1001 

40/55  0:54   -1.88++  1...Te5 (54.639.309) 1002 

40/55  0:54   -1.88    1...Te5 2.Te1 Te4 3.Th3 Ta2 4.Th2 Kf7 
                       5.Th3 f5 6.e3 Ta3 7.Kg2 Tg4+ 8.Kf3 Kf6 
                       9.Tc1 dxe3 10.fxe3 Te4 11.Te1 Kg5 
                       12.Tg1+ Tg4 13.Thh1 Tc3 14.Kf2 Tc7 (54.962.778) 1002 

41/59  0:56   -1.72--  1...Te5 2.Te1 (57.075.076) 1006 

41/59  0:57   -1.58--  1...Te5 2.Te1 (58.339.717) 1009 

41/59  1:05   -1.72++  1...Te5 (65.953.674) 1009 

41/59  1:05   -1.72    1...Te5 2.Te1 Kh7 3.Th3 Tf5 4.Th2 Tg5 
                       5.Tb1 Te5 6.Te1 Te4 7.Th3 Ta2 8.Th2 Tc2 
                       9.Th3 Kg8 10.Th2 Kf7 11.Th3 Ta2 
                       12.Th2 Td2 13.Th3 Tc2 14.Th2 Ta2 (66.341.601) 1010 

42/57  1:16   -1.57--  1...Te5 2.Te1 (77.522.127) 1013 

42/57  1:17   -1.57    1...Te5 2.Te1 Kh7 3.Th3 Tf5 4.Th2 Tg5 
                       5.Tb1 Te5 6.Te1 Te4 7.Th3 Ta2 8.Th2 Kg8 
                       9.Th3 Kf7 10.Th2 Tc2 11.Th3 f5 12.e3 Tc3 
                       13.Kg2 Kf6 14.Kf3 dxe3 (78.365.192) 1013 

43/65  1:19   -1.72++  1...Te5 (80.802.031) 1015 

43/65  1:21   -1.86++  1...Te5 (82.906.383) 1019 

43/65  1:21   -1.75    1...Te5 2.Te1 Kh7 3.Th4 Tf5 4.Th2 Tg5 
                       5.Tb1 Te5 6.Te1 Te4 7.Th3 Ta2 8.Th2 Kg8 
                       9.Th3 Kf7 10.Th2 Tc2 11.Th3 f5 12.e3 Tc3 
                       13.Kg2 Kf6 14.Kf3 dxe3 (83.202.264) 1020 

44/57  1:24   -1.68    1...Te5 2.Te1 Kh7 3.Th4 Tf5 4.Th2 Tg5 
                       5.Tb1 Te5 6.Te1 Te4 7.Th3 Ta2 8.Th2 Kg8 
                       9.Th3 Kf7 10.Th2 Tc2 11.Th3 f5 12.e3 Tc3 
                       13.Kg2 Kf6 14.Kf3 dxe3 (86.128.146) 1021 

45/59  1:29   -1.85++  1...Te5 (91.294.408) 1021 

45/59  1:35   -1.57--  1...Te5 2.Te1 (97.826.408) 1025 

45/59  1:39   -1.78++  1...Te5 (101.645.362) 1021 

45/59  1:41   -1.77    1...Te5 2.Te1 Te4 3.Th3 Ta2 4.Th2 Kf7 
                       5.Th3 f5 6.e3 Ta3 7.Kg2 Kf6 8.Kf3 dxe3 
                       9.fxe3 Kg5 10.Tg1+ Tg4 11.Thh1 Tc3 
                       12.Kf2 Tc7 13.Tg3 Tc2+ 14.Kf3 Tc3 (103.379.294) 1021 

46/68  1:47   -1.61--  1...Te5 2.Te1 (109.536.170) 1021 

46/68  1:55   -1.60    1...Te5 2.Te1 Te4 3.Th3 Ta2 4.Th2 Kf7 
                       5.Th3 f5 6.e3 Ta3 7.Kg2 Kf6 8.Kf3 dxe3 
                       9.fxe3 Kg5 10.Tg1+ Tg4 11.Thh1 Tc3 
                       12.Kf2 Tc7 13.Tg3 Tc2+ 14.Kf3 Tc3 (118.524.250) 1022 

47/63  2:02   -1.75++  1...Te5 (124.700.030) 1019 

47/63  2:06   -1.77    1...Te5 2.Te1 Te4 3.Th3 Ta2 4.Th2 Kf7 
                       5.Th3 f5 6.e3 Ta3 7.Kg2 Kf6 8.Kf3 dxe3 
                       9.fxe3 Kg5 10.Tg1+ Tg4 11.Thh1 Tc3 
                       12.Kf2 Tc7 13.Tg3 Te7 14.Tgh3 Tb7 (128.825.308) 1019 

48/67  2:14   -1.61--  1...Te5 2.Te1 (136.457.818) 1017 

48/76  2:22   -1.74++  1...Te5 (144.349.320) 1014 

48/76  3:06   -1.95++  1...Te5 (186.875.179) 1003 

48/76  3:11   -2.23++  1...Te5 (192.410.754) 1002 

48/76  3:58   -2.62++  1...Te5 (236.591.088) 992 

48/76  4:59   -2.50    1...Te5 2.Te1 Te4 3.Th3 Kf7 4.Th2 f5 
                       5.Th1 Tc2 6.Th3 Kf6 7.e3 Tc3 8.Kg2 dxe3 
                       9.fxe3 Kg5 10.Kf3 Tf4+ 11.Kg3 Tg4+ 
                       12.Kf3 f4 13.Kf2 Tc2+ 14.Kf3 Tg3+ (293.902.301) 982 

49/65  5:19   -2.64++  1...Te5 (312.388.625) 979 

49/72  6:04   -2.66    1...Te5 2.Te1 Te4 3.Th3 Kf7 4.Th2 f5 
                       5.Th1 Tc2 6.Th3 Kf6 7.f3 Te3 8.Tg3 Kf7 
                       9.Th3 Ta2 10.Kf2 Te5 11.Kf1 Te6 
                       12.Tg3 d3 13.exd3 Txe1+ 14.Kxe1 Th2 (354.975.829) 973 

50/76  6:48   -2.63    1...Te5 2.Te1 Te4 3.Th3 Kf7 4.Th2 f5 
                       5.Th1 Tc2 6.Th3 Kf6 7.f3 Te3 8.Tg3 Kf7 
                       9.Th3 Ta2 10.Kf2 Te5 11.Kf1 Te6 
                       12.Tg3 Tc2 13.Tg1 Td2 14.Tg3 Te3 (396.381.701) 970 

51/68  7:00   -2.46--  1...Te5 2.Te1 (407.692.689) 969 

51/77  7:08   -2.60    1...Te5 2.Te1 Te4 3.Th3 Kf7 4.Th2 f5 
                       5.Th1 Tc2 6.Th3 Kf6 7.f3 Te3 8.Tg3 Kf7 
                       9.Th3 Ta2 10.Kf2 Te7 11.Kf1 Td2 
                       12.Tg3 Ta7 13.Tg6 d3 14.exd3 Th2 (415.462.048) 968 

52/69  7:23   -2.39--  1...Te5 2.Te1 (429.259.827) 968 

52/69  7:48   -2.57++  1...Te5 (453.178.354) 966 

52/78  7:54   -2.54    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tb2 6.Th3 Td2 7.Th2 f5 8.Th1 Ta2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Th3 Tc2 13.Tg3 Td2 14.Kf2 Te7 (458.269.570) 966 

53/80  8:01   -2.36--  1...Te5 2.Te1 (465.254.900) 966 

53/80  8:10   -2.53++  1...Te5 (473.665.984) 966 

53/80  8:17   -2.19--  1...Te5 2.Te1 (480.368.210) 966 

53/80  8:24   -2.23    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Tc2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Th3 Ta2 13.Tg3 d3 14.exd3 Txe1+ (487.792.851) 966 

54/81  8:31   -2.08--  1...Te5 2.Te1 (494.367.150) 967 

54/81  8:37   -2.24++  1...Te5 (500.761.714) 967 

54/81  8:42   -2.46++  1...Te5 (505.206.101) 967 

54/81  8:46   -2.26    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Tc2 
                       9.Th3 Kf6 10.f3 Te6 11.Tg3 Kf7 
                       12.Th3 Td2 13.Tg3 Te3 14.Kf2 Te7 (509.701.676) 967 

55/77  8:51   -2.13--  1...Te5 2.Te1 (514.169.762) 968 

55/77  8:52   -1.97--  1...Te5 2.Te1 (515.479.444) 968 

55/77  9:07   -2.13++  1...Te5 (529.882.058) 968 

55/77  9:11   -2.44++  1...Te5 (534.499.078) 968 

55/82  9:17   -2.17    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Ta2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Th3 Td2 13.Tg3 d3 14.exd3 Txe1+ (540.151.402) 968 

56/77  9:34   -2.38++  1...Te5 (556.744.262) 968 

56/77  9:39   -2.21    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Ta2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Kf2 Te7 13.Kf1 Te6 14.Tg1 Td2 (561.091.363) 968 

57/67  9:49   -2.09--  1...Te5 2.Te1 (571.290.531) 968 

57/67  10:05  -2.25++  1...Te5 (586.472.186) 967 

57/70  10:21  -2.47++  1...Te5 (601.958.968) 967 

57/70  10:27  -2.25    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Ta2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Kf2 Te6 13.Kf1 d3 14.exd3 Txe1+ (607.290.296) 967 

58/70  10:53  -2.45++  1...Te5 (631.767.133) 966 

58/70  11:00  -2.13--  1...Te5 2.Te1 (637.986.378) 966 

58/82  11:17  -2.37++  1...Te5 (654.971.110) 966 

58/82  11:39  -2.19    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Ta2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Kf2 Te7 13.Kf1 Te6 14.Tg1 Td2 (677.089.457) 967 

59/71  11:50  -2.39++  1...Te5 (687.404.553) 967 

59/71  11:56  -2.21    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Ta2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Kf2 Te7 13.Kf1 Te6 14.Tg1 Td2 (693.444.648) 967 

60/77  12:49  -2.41++  1...Te5 (742.902.854) 965 

60/77  13:44  -2.57++  1...Te5 (795.052.372) 964 

60/86  16:30  -2.79++  1...Te5 (950.539.342) 959 

60/86  18:06  -2.42    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Ta2 
                       5.Th2 Tc2 6.Th3 Td2 7.e3 d3 8.Tb1 Tg4 
                       9.Ke1 Tc2 10.Kf1 Ke6 11.Td1 Tc3 
                       12.Th1 Kd5 13.f3 Ta4 14.Th2 f5 (1.039.102.543) 956 

61/64  19:30  -2.68++  1...Te5 (1.110.628.423) 949 

61/78  21:12  -2.33--  1...Te5 2.Te1 (1.202.207.593) 944 

61/78  22:51  -2.59++  1...Te5 (1.287.061.789) 938 

61/83  24:19  -2.09--  1...Te5 2.Te1 (1.368.104.553) 937 

61/86  24:56  -2.51++  1...Te5 (1.403.314.991) 937 

61/89  25:39  -2.40    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th1 f5 8.f3 Te3 
                       9.Th3 Ta3 10.Tg3 Ta7 11.Th3 Tc7 
                       12.Tg3 Tb7 13.f4 Te7 14.Ta3 Te4 (1.444.264.767) 938 

62/69  26:24  -2.57++  1...Te5 (1.486.675.369) 937 

62/70  26:48  -2.24--  1...Te5 2.Te1 (1.507.690.946) 937 

62/90  27:09  -2.48++  1...Te5 (1.524.531.816) 935 

62/90  27:28  -2.53    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th1 f5 8.f3 Te3 
                       9.Th3 Ta3 10.Tg3 Ta7 11.Th3 Tc7 
                       12.Tg3 Tb7 13.Th3 Tb6 14.Tg3 Te6 (1.541.757.475) 935 

63/62  27:44  -2.33--  1...Te5 2.Te1 (1.555.976.120) 934 

63/62  28:10  -2.17--  1...Te5 2.Te1 (1.576.925.265) 932 

63/62  28:56  -2.33++  1...Te5 (1.615.772.272) 930 

63/71  29:43  -2.66++  1...Te5 (1.657.763.822) 929 

63/90  35:50  -2.86    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Ta2 6.Th3 Td2 7.Th1 f5 8.f3 Te3 
                       9.Th3 Te7 10.Tg3 Tc7 11.Th3 Kf6 
                       12.f4 Tc3 13.Tf3 d3 14.exd3 Th2 (1.976.763.318) 919 

64/69  41:37  -2.93++  1...Te5 (2.286.652.660) 915 

64/87  47:40  -3.11++  1...Te5 (2.609.481.190) 912 

64/102 59:44  -3.24    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Ta2 6.Th3 Td2 7.Th2 f5 8.Th1 Ta2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Kf2 Te6 13.Kf1 d3 14.exd3 Txe1+ (3.276.854.104) 914 

65/92  67:14  -2.96--  1...Te5 2.Te1 (3.666.579.653) 908 

65/92  67:40  -2.76--  1...Te5 2.Te1 (3.687.807.054) 908 

65/92  67:52  -2.48--  1...Te5 2.Te1 (3.699.184.827) 908 

65/92  70:48  -2.72++  1...Te5 (3.855.157.778) 907 

65/92  74:03  -2.94    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Tb2 
                       9.Th3 Kf6 10.f3 Te3 11.Tg3 Kf7 
                       12.Kf2 Te6 13.Kf1 d3 14.exd3 Txe1+ (4.036.074.937) 908 

66/85  74:36  -2.66--  1...Te5 2.Te1 (4.068.402.831) 908 

66/85  74:50  -2.48--  1...Te5 2.Te1 (4.081.791.244) 908 

66/85  75:44  -2.66++  1...Te5 (4.133.092.914) 909 

66/87  76:28  -2.22--  1...Te5 2.Te1 (4.175.171.177) 909 

66/97  77:08  -2.62++  1...Te5 (4.211.502.425) 909 

66/98  79:40  -3.09    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Tc2 6.Th3 Td2 7.Th2 f5 8.Th1 Ta2 
                       9.Th3 Kf6 10.f3 Te6 11.Tg3 Kf7 
                       12.Tg1 Td2 13.Tg3 d3 14.exd3 Txe1+ (4.343.684.165) 908 

67/80  82:36  -3.09++  1...Te5 (4.506.297.829) 909 

67/106 90:22  -3.27++  1...Te5 (4.948.975.290) 912 

67/106 98:52  -3.23    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Tc2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Kg8 10.Kf3 Tc2 11.Th4 f5 12.Tf4 d2 
                       13.Td1 fxe4+ 14.Txe4 Tc3+ (5.435.604.389) 916 

68/106 104:27 -3.01--  1...Te5 2.Te1 (5.770.758.199) 920 

68/106 106:32 -3.22++  1...Te5 (5.893.626.300) 921 

68/106 126:38 -3.36    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Tc2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Kg8 10.Kf3 Tc2 11.Th4 f5 12.Tf4 d2 
                       13.Td1 fxe4+ 14.Txe4 Tc3+ (7.013.428.655) 922 

69/113 142:49 -3.40    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Tc2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Kg8 10.Kf3 Tc2 11.Th4 f5 12.Tf4 d2 
                       13.Td1 fxe4+ 14.Txe4 Tc3+ (7.946.132.982) 927 

70/103 162:59 -3.42    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Tc2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Kg8 10.Kf3 Tc2 11.Th4 f5 12.Tf4 d2 
                       13.Td1 fxe4+ 14.Txe4 Tc3+ (8.958.819.364) 916 

71/94  170:18 -3.41    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th3 Tb2 
                       5.Th2 Tc2 6.Th3 Td2 7.e3 d3 8.Kg2 Te5 
                       9.e4 Kg8 10.Kf3 Tc2 11.Th4 f5 12.Tf4 d2 
                       13.Td1 fxe4+ 14.Txe4 Tc3+ (9.328.734.101) 912 

72/100 179:00 -3.19--  1...Te5 2.Te1 (9.772.477.307) 909 

72/100 181:58 -2.98--  1...Te5 2.Te1 (9.923.160.529) 908 

72/100 187:10 -3.19++  1...Te5 (10.177.884.530) 906 

72/114 248:38 -3.58++  1...Te5 (13.258.948.688) 888 

72/114 263:29 -2.68--  1...Te5 2.Te1 (14.021.617.753) 886 

72/114 280:26 -2.77    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th2 f5 
                       5.Th1 Ta2 6.Th3 Kf6 7.f3 Te3 8.Tg3 Kf7 
                       9.Kf2 Te7 10.Kf1 d3 11.exd3 Txe1+ 
                       12.Kxe1 Th2 13.Tg1 Txh5 14.Ke2 Th2+ (14.907.899.417) 885 

73/84  308:41 -3.01++  1...Te5 (16.374.773.976) 884 

73/84  323:10 -3.20++  1...Te5 (17.119.351.444) 882 

73/106 330:37 -3.19    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th2 f5 
                       5.Th1 Ta2 6.Th3 Kf6 7.f3 Te3 8.Tg3 Kf7 
                       9.Kf2 Te7 10.Kf1 d3 11.exd3 Txe1+ 
                       12.Kxe1 Th2 13.Tg1 Txh5 14.Ke2 Th2+ (17.523.128.486) 883 

74/103 351:23 -3.36++  1...Te5 (18.587.296.802) 881 

74/103 392:17 -3.56++  1...Te5 (20.732.851.953) 880 

74/103 406:20 -3.56    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th2 f5 
                       5.Th1 Ta2 6.Th3 Kf6 7.f3 Te3 8.Tg3 Kf7 
                       9.Kf2 Te7 10.Kf1 d3 11.exd3 Txe1+ 
                       12.Kxe1 Th2 13.Tg1 Txh5 14.Ke2 Th2+ (21.495.029.609) 881 

75/99  474:52 -3.58    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th2 f5 
                       5.Th1 Ta2 6.Th3 Kf6 7.f3 Te3 8.Tg3 Kf7 
                       9.Kf2 Te7 10.Kf1 d3 11.exd3 Txe1+ 
                       12.Kxe1 Th2 13.Tg1 Txh5 14.Ke2 Th2+ (25.109.506.959) 881 

76/119 516:35 -3.33--  1...Te5 2.Te1 (27.376.475.946) 883 

76/119 524:02 -3.11--  1...Te5 2.Te1 (27.780.236.783) 883 

76/119 529:32 -3.33++  1...Te5 (28.077.907.259) 883 

76/119 651:04 -3.76++  1...Te5 (34.766.180.714) 889 

76/119 699:42 -2.80--  1...Te5 2.Te1 (37.655.925.275) 896 

76/119 723:40 -3.04    1...Te5 2.Te1 Te4 3.Th1 Kf7 4.Th2 f5 
                       5.Th1 Ta2 6.Th3 Kf6 7.f3 Te3 8.Tg3 Kf7 
                       9.Kf2 Te6 10.Kf1 Td2 11.Tg1 Tc2 
                       12.Tg3 d3 13.exd3 Txe1+ 14.Kxe1 Th2 (39.092.955.886) 900 

77/84  728:35 -2.85--  1...Te5 2.Te1 (39.395.704.811) 901 

77/84  762:42 -3.04++  1...Te5 (41.490.316.387) 906 

77/84  778:14 -3.31++  1...Te5 (42.399.370.091) 908 

77/104 814:45 -3.68++  1...Te5 (44.522.197.485) 910 

77/119 932:39 -3.68    1...Te5 2.Te1 Te4 3.Th3 Kf7 4.Th2 f5 
                       5.Th1 Ta2 6.Th3 Kf6 7.f3 Te6 8.Tg3 Kf7 
                       9.Th3 Tc2 10.Tg3 d3 11.exd3 Txe1+ 
                       12.Kxe1 Th2 13.Tg1 Txh5 14.Ke2 Th2+ (51.640.381.617) 922 

78/76  940:42 -3.40--  1...Te5 2.Te1 (52.131.393.808) 923 

78/100 945:26 -3.17--  1...Te5 2.Te1 (52.426.118.629) 924 

78/111 956:28 -3.40++  1...Te5 (53.093.160.960) 925 

78/111 1035:10-3.82++  1...Te5 (57.770.829.683) 930 

78/120 1187:55-4.06    1...Te5 2.Te1 Te4 3.Th3 Kf7 4.Th2 f5 
                       5.Th1 Ta2 6.Th3 Kf6 7.f3 Te6 8.Tg3 Kf7 
                       9.Th3 Tc2 10.Tg3 d3 11.exd3 Txe1+ 
                       12.Kxe1 Th2 13.Tg1 Txh5 14.Ke2 Th2+ (66.876.606.380) 938 

79/104 1198:19-3.67--  1...Te5 2.Te1 (67.504.034.239) 938 

79/104 1221:43-3.92++  1...Te5 (68.896.880.424) 939 

79/104 1225:57-3.42--  1...Te5 2.Te1 (69.158.451.064) 940 

79/104 1233:42-3.84++  1...Te5 (69.627.554.590) 940 

79/110 1367:18-4.11    1...Te5 2.Te1 Te4 3.Th3 Kf7 4.Th2 f5 
                       5.Th1 Ta2 6.Th3 Kf6 7.f3 Te6 8.Tg3 Kf7 
                       9.Th3 Tc2 10.Tg3 d3 11.exd3 Txe1+ 
                       12.Kxe1 Th2 13.Tg1 Txh5 14.Ke2 Th2+ (77.871.606.563) 949
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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peter
Posts: 3167
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Endgame progress test in Uri's Grob position.

Post by peter »

Eelco de Groot wrote: ↑Fri Feb 04, 2022 4:18 am The road from 7 to 6 men seems long, do you think you would need 7 men here if you wanted proof it is won? Or do you think a score like +5 is possible if you just spent a few days :)
As for my personal pov, Eelco, I still think it's draw by best play of White anyhow. I just can't prove that neither :)
Will investigate further, when more of my hardware- time is free again, cause I guess we agree in this point at least, it won't be possible to get conclusive games nor outputs with STC only, not even with very many of them. A single 45'+5" one was drawn so far, probably there would be more of them with that hardware- TC, but so what regards
Peter.
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peter
Posts: 3167
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Endgame progress test in Uri's Grob position.

Post by peter »

peter wrote: ↑Fri Feb 04, 2022 8:15 am A single 45'+5" one was drawn so far, probably there would be more of them with that hardware- TC
Yet one won game tells some more maybe, if you don't find a blunder from the losing side, where did White go wrong here:

15 threads of 16x3.5GHz Ryzen, 8G hash, 6men Syzygys each:

[pgn][[Event "AMD, Schnellschach 45m+5s"]
[Site "DESKTOP"]
[Date "2022.02.04"]
[Round "1"]
[White "Stockfish 220122"]
[Black "Crystal 251221"]
[Result "0-1"]
[Annotator "-8.08;-2.75"]
[SetUp "1"]
[FEN "6k1/6p1/5p1p/5r1P/3p4/8/3rPP1R/4RK2 w - - 0 1"]
[PlyCount "41"]
[TimeControl "2700+5"]

1. Ra1 Re5 2. Re1 Re4 3. Rh3 Kf7 4. Rh2 f5 5. Rh1 {-3.86/51 85} Ra2 {-2.43/44
331} 6. f3 {-5.24/52 5 -3.86;-2.43: '(Th3)'} Re7 {-3.14/39 321 -3.86;-2.43: '
(Te6)'} 7. Rg1 {-6.69/45 125} Re6 {-3.25/41 0} 8. Rg3 {-6.74/42 69} Rd2 {-3.33/
38 261 -3.86;-2.43: '(Te3)'} 9. Rg1 {-7.01/48 197} Rb2 {-3.33/41 118 -3.86;-2.
43: '(Tc2)'} 10. Rg3 {-8.08/43 114} Rd2 {-2.75/38 480 (d3)} 11. Rh3 {-4.90/41
58 (Tg1)} Rc6 {-4.21/33 78 (Ta6)} 12. Ra1 {-9.33/40 497 (Kg2)} Rcc2 {-6.01/31
44} 13. Re1 {-10.13/38 107 (Ta7+)} Kf6 {-6.28/35 177} 14. Rg3 {-10.34/36 0} d3
{-6.55/29 45} 15. exd3 {-10.46/31 58} Rh2 {-6.62/30 15} 16. Kg1 {-11.25/42 462}
Rxh5 {-7.19/32 25} 17. Rb1 {-11.26/35 53 (Ta1)} Rc6 {-7.51/27 46} 18. Kf2 {-12.
15/33 361 (f4)} g5 {-7.58/26 520} 19. f4 {-12.18/33 0 (Kg1)} gxf4 {-9.62/23
411 (Th2+)} 20. Rf3 {-56.81/34 111} Rc2+ {-8.78/15 208} 21. Kg1 {-152.48/54 0
adjud.} 0-1
[/pgn]
YOOTRWREG (yet one of the rare won rook endgames)?
:)
Peter.
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peter
Posts: 3167
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Endgame progress test in Uri's Grob position.

Post by peter »

peter wrote: ↑Fri Feb 04, 2022 10:31 am
peter wrote: ↑Fri Feb 04, 2022 8:15 am A single 45'+5" one was drawn so far, probably there would be more of them with that hardware- TC
Yet one won game tells some more maybe, if you don't find a blunder from the losing side, where did White go wrong here
Or here, where "even" LC0 won with Black against SF, 30 threads for SF, 2 of CPU for LC0 on 3070ti GPU

[pgn][Event "AMD, Schnellschach 45m+5s"]
[Site "DESKTOP-9QB5AU4"]
[Date "2022.02.04"]
[Round "1"]
[White "Stockfish 220122"]
[Black "Lc0 v0.29.0-dev+git.fe0c87a"]
[Result "0-1"]
[Annotator "-3.74;-1.15"]
[SetUp "1"]
[FEN "6k1/6p1/5p1p/5r1P/3p4/8/3rPP1R/4RK2 w - - 0 1"]
[PlyCount "51"]
[TimeControl "2700+5"]

1. Ra1 Re5 2. Re1 Re4 3. Rh3 Kf7 4. Rh2 f5 5. Rh1 {-3.74/51 85} Ra2 {-1.15/19
88 (Tb2)} 6. Rh3 {-5.89/47 180} Kf6 {-1.21/30 0} 7. f3 {-6.29/44 150} Re3 {-1.
22/26 0 (Te6)} 8. Rg3 {-6.43/45 64} Kf7 {-1.25/28 0} 9. Kf2 {-6.45/48 62} Re5 {
-1.28/30 66 (Te7)} 10. Kf1 {-6.76/40 42} d3 {-1.33/26 3 (Te3)} 11. exd3 {-9.46/
45 158} Rxe1+ {-1.34/28 0} 12. Kxe1 {-9.46/34 0} Rh2 {-1.35/28 0} 13. Rg1 {-11.
67/38 170} Rxh5 {-1.43/21 0} 14. Ke2 {-11.55/33 80} Rh2+ {-1.63/25 125} 15. Ke3
{-13.69/34 87} Ra2 {-1.71/25 0} 16. Rh1 {-10.68/32 240} Ra6 {-1.87/25 0} 17. d4
{-14.71/31 171} Kf6 {-1.98/24 1 (Ke6)} 18. Kd3 {-11.21/32 71} Ra3+ {-2.02/22 0}
19. Ke2 {-8.42/33 123} Ra7 {-2.10/23 1} 20. Ke3 {-5.53/38 283} Rb7 {-2.21/21 1
(Te7+)} 21. Kd3 {-14.85/30 160 (Th3)} Kg5 {-5.38/18 355 (Te7)} 22. d5 {-19.71/
29 259} Kf4 {-5.77/17 1} 23. Kd4 {-54.60/25 94 (Ke2)} Rd7 {-5.97/18 119 (Tb2)}
24. Rh3 {-62.77/32 123 (Kc5)} Rd8 {-8.76/16 210} 25. Kc5 {-152.44/35 0 (Th5)}
Ke5 {-12.88/14 93} 26. d6 {-152.50/45 0 (f4+) adjud.} 0-1
[/pgn]
Peter.
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peter
Posts: 3167
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Endgame progress test in Uri's Grob position.

Post by peter »

Eelco de Groot wrote: ↑Fri Feb 04, 2022 4:18 am Amazing stuff Peter! The road from 7 to 6 men seems long, do you think you would need 7 men here if you wanted proof it is won? Or do you think a score like +5 is possible if you just spent a few days :)
As a matter of fact, Eelco, a score of -6 is possible with nothing else then 6men Syzygys and a little Backward with SF dev. of one the won games, I showed already.

Here's such an output with full hash started again after such a Backward:


[fen]6k1/6p1/5p1p/5r1P/3p4/8/3rPP1R/4RK2 w - - 0 1[/fen]


Analysis by Stockfish 220122:

1.Rb1 Re5 2.Re1 Re4 3.Rh3 Kf7 4.Rh2 f5 5.Rh1 Ra2 6.Rh3 Kf6 7.f3 Re3 8.Rg3 Kf7 9.Kf2 Re8 10.Kf1 Re6 11.Rg1 Rd2 12.Rg3 Re3 13.Kf2 Re7 14.Kf1 Rc7 15.Ra1 d3 16.exd3 Rh2 17.f4 Rxh5 18.Kg2 Rh4 19.Kf3 Rd7 20.Ra3 g6 21.Rg1 Rd6 22.Ra7+ Kf6 23.d4 Rh3+ 24.Rg3 Rxg3+ 25.Kxg3 g5 26.Ra4 Kg6 27.Kf2 g4 28.Kg3 Rc6 29.Ra3 Rc1 30.Rd3 Rf1 31.d5 Kf6 32.Kg2 Rf3 33.Rd2
-+ (-6.38) Depth: 46/76 00:01:15 3480MN, tb=8162457

Don't look at the unnecessary shuffling within the line, just try to reach any position, where Black can move ...d3 without simply exchanging this one pawn against White's e-pawn but can pass or exchange it against e.g. White's h-pawn. At only one of these two lines getting a passer or at least a second one (from White's view) half- open line and game's over.
It's not as difficult as I thought it to be at my first trials.

Edit: in the meantime depth 49/89 after switching to MultiPV=6 with still full hash:

6k1/6p1/5p1p/5r1P/3p4/8/3rPP1R/4RK2 w - - 0 1

Analysis by Stockfish 220122:

Code: Select all

1. -+  (-5.04): 1.Ra1 Re5 2.Re1 Re4 3.Rh3 Kf7 4.Rh2 f5 5.Rh1 Ra2 6.f3 Re6 7.Rg1 Rd2 8.Rg3 Re3 9.Kf2 Re7 10.Kf1 Rc7 11.Rg6 d3 12.exd3 Rh2 13.Kg1 Rxh5 14.Ra6 Rd7 15.Rd1 f4 16.Ra4 Rf5 17.Kg2 Rd6 18.Ra7+ Kg6 19.Ra4 Kh7 20.Rd2 g5 21.Kh3 Rfd5 22.Ra8 Rd8 23.Ra6 R5d6 24.Ra3 Kg6 25.Kg2 Kh5 26.Rb3 Rd4 27.Rc3 R8d6 28.Rd1 Rb6 29.Rc2 Kg6 30.Kf2 Ra6 31.Kf1 Rd5 32.Kg2 Rad6 33.Rc3 Re5 34.Rc2 Ra5 35.Rdd2 Ra3 36.d4 Ra5 37.Rc4 Rad5 38.Kh3 Kf5 39.Rd1 h5 40.Rd3 Rd8 41.Rd1 Re8 42.Rd2 g4+ 43.Kg2 Re3 44.Rf2 
2. -+  (-5.21): 1.Rb1 Re5 2.Re1 Re4 3.Rh3 Kf7 4.Rh2 f5 5.Rh1 Ra2 6.f3 Re6 7.Rg1 Rd2 8.Rg3 Re3 9.Kf2 Re7 10.Kf1 Rc7 11.Rg6 d3 12.exd3 Rh2 13.Kg1 Rxh5 14.Ra6 Rd7 15.Rd1 f4 16.Ra4 Rf5 17.Kg2 Rd6 18.Ra7+ Kg6 19.Ra4 Kh7 20.Rd2 g5 21.Kh3 Rfd5 22.Ra8 Rd8 23.Ra6 R5d6 24.Ra3 Kg6 25.Kg2 Kh5 26.Rb3 Rd4 27.Rc3 R8d6 28.Rd1 Rb6 29.Rd2 Rb1 30.Rc6 Rdb4 31.Rdc2 Rb6 32.Rxb6 Rxb6 33.d4 Rd6 34.Rd2 Kg6 35.Kh1 
3. -+  (-5.21): 1.Kg1 Re5 2.Kf1 Re4 3.Rh3 Kf7 4.Rh2 f5 5.Rh1 Ra2 6.f3 Re6 7.Rg1 Rd2 8.Rg3 Re3 9.Kf2 Re7 10.Kf1 Rc7 11.Rg6 d3 12.exd3 Rh2 13.Kg1 Rxh5 14.Ra6 Rd7 15.Rd1 f4 16.Ra4 Rf5 17.Kg2 Rd6 18.Ra7+ Kg6 19.Ra4 Kh7 20.Rd2 g5 21.Kh3 Rfd5 22.Ra8 Rd8 23.Ra6 R5d6 24.Ra3 Kg6 25.Kg2 Kh5 26.Rb3 Rd5 27.Rc3 Rb8 28.Rc1 Rb3 29.Rcd1 Kg6 30.Rc2 Rd6 31.d4 Rb5 32.Rdd2 Ra5 33.Rc4 Rad5 34.Kh3 Kf5 35.Rd1 h5 36.Rd3 Rd8 37.Rd1 Re8 
4. -+  (-5.21): 1.Rc1 Re5 2.Re1 Re4 3.Rh3 Kf7 4.Rh2 f5 5.Rh1 Ra2 6.f3 Re6 7.Rg1 Rd2 8.Rg3 Re3 9.Kf2 Re7 10.Kf1 Rc7 11.Rg6 d3 12.exd3 Rh2 13.Kg1 Rxh5 14.Ra6 Rd7 15.Rd1 f4 16.Ra4 Rf5 17.Kg2 Rd6 18.Ra7+ Kg6 19.Ra4 Kh7 20.Rd2 g5 21.Kh3 Rfd5 22.Ra8 Rd8 23.Ra6 R5d6 24.Ra3 Kg6 25.Kg2 Kh5 26.Rb3 Rd5 27.Rc3 Rb8 28.Rc1 Rb3 29.Rcd1 Kg6 30.Rc2 Rd6 31.d4 Rb5 32.Rdd2 Rbd5 33.Rc4 Rd7 34.Kh3 Rd8 35.Rd3 R8d6 36.Rd2 Kf5 37.Rd1 h5 38.Rd3 Rd8 39.Rc6 Re8 40.Kg2 
5. -+  (-8.90): 1.e4 Rg5 2.Rh3 d3 3.Rh4 Kf7 4.Ra1 Ke6 5.Rc1 Ke7 6.Ra1 Kd6 7.Ke1 Rb2 8.Kf1 Kc5 9.Rc1+ Kb5 10.Rh3 Rb3 11.Rh4 Ra3 12.Rd1 Re5 13.Kg2 Kc4 14.Kf3 Kd4 15.Rg4 Rg5 16.Rh4 Ra2 17.Rhh1 Re5 18.Rb1 d2 19.Rhg1 Kd3 20.Rb8 Ra3 21.Rc8 Rc3 22.Rd8+ Kc2+ 23.Kf4 Rxh5 24.Ra1 Rhh3 25.Kf5 Rhd3 26.Ra2+ Kd1 27.Rg8 Rc2 28.Ra1+ Rc1 29.Ra2 Rf3+ 30.Ke6 Rc6+ 31.Kf7 Rc2 
6. -+  (-9.20): 1.e3 d3 2.e4 Rg5 3.Rh4 Kf7 4.Ra1 Ke6 5.Rc1 Ke7 6.Ra1 Kd6 7.Ke1 Rb2 8.Kf1 Kc5 9.Rc1+ Kb5 10.Ra1 Rd2 11.Rf4 Kc6 12.Rh4 Kc5 13.Rc1+ Kb5 14.Re1 Ra2 15.Rc1 Ra3 16.Rd1 Re5 17.Kg2 Kc4 18.Kf3 Kd4 19.Rg4 Rg5 20.Rh4 Ra2 21.Rb1 d2 22.Rhh1 Re5 23.Rhg1 Kd3 24.Rb8 Ra3 25.Rc8 Rc3 26.Rd8+ Kc2+ 27.Kf4 Rxh5 28.Ra1 Rhh3 29.Ra2+ Kb3 30.Kf5 Kxa2 31.Rxd2+ Kb3 32.Kg6 Rc7 33.f4 Rf3 34.e5 Rxf4 35.e6 Rg4+ 36.Kh7 Re7 37.Kg8 Rxe6 38.Rh2 Rg5 39.Rh4 Re4 40.Rxe4 Kc3
Peter.
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