Author: Dann Corbit
Date: 13:57:53 03/05/01
Go up one level in this thread
On March 05, 2001 at 16:05:46, Sune Larsson wrote:
>
> [D]8/8/4pk1B/8/5K1N/p7/8/8 w - - 0 1
>
> Schröder 19??
>
> Well, Mr Schröder seems to be a man of many talents. This is a very
> nice position, made in his youth I think. ;) Black is about to promote
> and the white pieces sort of step on eachother's toes. But there is
> a way for white to draw. A stunning resource that shows the beauty
> of chess. Rebel might prove good at this one...;)
>
>
> Test: White to move and draw. The quicker the better.
> Solution further down.
GLC gives it a try (going to be tough w/o tablebase files):
>epd 999 ed.epd
>
Game stage: Endgame
Current eval: 4.06
Ply Time Score Nodes Principal Variation
4 0.01 -0.23 5362 Bg5+ Kg7 Nf5+ exf5 Kxf5 a2 Bf6+ Kf7
4 0.01 0.70 7524 Ke4 a2 Be3 a1=Q Bd4+ Qxd4+ Kxd4
4 0.01 0.70 7743 Ke4 a2 Be3 a1=Q Bd4+ Qxd4+ Kxd4
5 0.01 1.00 12368 Bg5+ Kg7 Be7 a2 Bd6 a1=Q Be5+ Qxe5+ Kxe5
5 0.02 1.00 16537 Bg5+ Kg7 Be7 a2 Bd6 a1=Q Be5+ Qxe5+ Kxe5
6 0.04 -- 39618 Bg5+ (a=0.50 b=1.50 e=0.50)
6 0.06 -2.47 58617 Bg5+ Kf7 Nf5 e5+ Kxe5 a2 Nd6+ Kg6 Be3 a1=Q+ Bd4
6 0.08 -2.47 78154 Bg5+ Kf7 Nf5 e5+ Kxe5 a2 Nd6+ Kg6 Be3 a1=Q+ Bd4
7 0.12 -2.69 117072 Nf5 exf5 Bf8 a2 Bb4 a1=B Be7+ Ke6 Bc5
7 0.15 -2.69 140455 Nf5 exf5 Bf8 a2 Bb4 a1=B Be7+ Ke6 Bc5
8 0.15 -2.80 144255 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bd4
8 0.18 -2.72 175410 Bg5+ Kf7 Nf3 a2 Bd8 a1=Q Ng5+ Kg6 Nxe6 Qe1 Nc5
8 0.24 -2.72 227565 Bg5+ Kf7 Nf3 a2 Bd8 a1=Q Ng5+ Kg6 Nxe6 Qe1 Nc5
9 0.30 -2.78 278411 Bg5+ Kf7 Nf3 a2 Bd8 a1=Q Ng5+ Kg6 Nxe6 Qe1 Nd4 Qc3
9 0.42 -2.78 389793 Bg5+ Kf7 Nf3 a2 Bd8 a1=Q Ng5+ Kg6 Nxe6 Qe1 Nd4 Qc3
10 0.79 -2.87 720462 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bd4 Bc7 Ke6
10 0.80 -2.87 722422 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bd4 Bc7 Ke6
11 0.83 -3.06 748896 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bc3 Kg3 Be1+ Kf4 Bd2+
Kf3 Bc3
11 1.11 -3.06 1012600 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bc3 Kg3 Be1+ Kf4 Bd2+
Kf3 Bc3
12 1.15 -2.86 1042351 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Ke6 Bf4 Bd4
12 1.50 -2.86 1366629 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Ke6 Bf4 Bd4
13 1.59 -2.89 1442725 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd2 Bb2 Kg3 Ke6 Bf4 <ht>
13 2.51 -2.89 2307354 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd2 Bb2 Kg3 Ke6 Bf4 <ht>
14 2.68 -2.88 2443253 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd2 Be5+ Kf3 Bd4 Bf4 Ke6
Kg3 Kd5 Kf3 Kc4
14 3.78 -2.88 3394990 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd2 Be5+ Kf3 Bd4 Bf4 Ke6
Kg3 Kd5 Kf3 Kc4
15 4.12 -2.87 3658436 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 <ht>
15 6.58 -2.87 5718317 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 <ht>
16 7.13 -2.87 6156305 Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 <ht>
16 12.41 -2.87 10612k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 <ht>
17 13.40 -2.87 11408k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 Ke6 Bc7
Ke7 Kf4 Kf6 Bd8+ Ke6 Bh4
17 25.39 -2.87 21349k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 Ke6 Bc7
Ke7 Kf4 Kf6 Bd8+ Ke6 Bh4
18 28.38 -2.87 23691k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 Ke6 Bc7
Bc5 Bg3 Kf6 Bf4 Bd4
18 57.68 -2.87 47190k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 Ke6 Bc7
Bc5 Bg3 Kf6 Bf4 Bd4
19 1:34 -2.87 73392k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 Ke6 Bc7
Bc5 Bf4 Kd5 Be3 Bd6 Bf4 Be5
19 2:51 -2.87 132605k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 Ke6 Bc7
Bc5 Bf4 Kd5 Be3 Bd6 Bf4 Be5
20 3:06 -2.87 143998k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 Ke6 Bc7
Bc5 Bg3 Kf6 Bf4 Bd4 Ke2 Bc3
20 6:24 -2.87 290668k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 Ke6 Bc7
Bc5 Bg3 Kf6 Bf4 Bd4 Ke2 Bc3
21 7:06 -2.87 322049k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 Ke6 Bc7
Bh8 Kf4 Bg7 Kf3 Bf6 Kf4 Bh8 Bb8 Bd4
21 15:59 -2.87 707674k Nf5 exf5 Bf8 a2 Bb4 a1=B Bd6 Bb2 Kf3 Bd4 Bf4 Ke6 Bc7
Bh8 Kf4 Bg7 Kf3 Bf6 Kf4 Bh8 Bb8 Bd4
local: t=16:39 nps=740171.9 n=739444287 (f=272584704 q=466859583)
total: t=16:39 nps=740171.9 n=739444287 draws=1934709
trans: probes=270649994 hits=70451800 (26.03%) draft=55930641 (20.67%)
tcuts: exact=4053 (0.00%) upper=39964031 (14.77%) lower=12743630 (4.71%)
tstor: exact=1375 (0.00%) upper=67656928 (68.92%) lower=30513279 (31.08%)
ext: check=73894980 recap=54122 ppush=56753 1rep=330198 thrt=0
q-moves: gen=107039130 tested=92886862 made/un=36813798 max-dep=6
max eval diff: part-1=3.65 part-2=0.70
!m Nh4-f5 -287 80 Nf5 >
move h4f5
--------------------------------------------
8/8/4pk1B/8/5K1N/p7/8/8 w - - bm Nf5; id "Ed -- Man of Many Talents";
Line 001: Test [Nf5]: passed in 0.80 seconds [score=-2.87]
Passed 1 out of 1 (0 invalid)
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This page took 0 seconds to execute
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