Author: Vincent Diepeveen
Date: 15:35:54 07/31/02
Go up one level in this thread
On July 31, 2002 at 16:16:32, Dann Corbit wrote:
how can you get only 14 ply with crafty after an hour. this is
a version with SE?
Note that crafty finds rxc4 very easily if i use the same 'passed pawn
table' which junior might be using.
Add a pawn extra bonus for passers at b2 in the middlegame and
see what crafty spits out.
That it's a simple passed pawn table bonus we can easily see from the
next position:
worldchamp 2000 junior-brutus:
4k3/1pr3p1/pNrp1p1p/P3pP1P/1PP1KnP1/RR6/8/8 b - - Rxb6!!
DIEP sees rxb6 at 4 ply already, so it definitely is a positional sack.
At a ply or 14,15 it is +2.5 for black up here for rxb6!! of course.
Junior however doubts a lot between rxc4 and rxb6 with the amazing
score of black up only 0.5. After a long time of doubt it picks the next
really bad line here and when i play it out it also keeps picking it:
rxc4? nxc4 d5 kf3 dxc4
The reason for this i can easily give. it gives a *huge* score for
passers on 2nd row. In this position the difference between
rxb6 and rxc4 is only 2 folded:
a) in the rxc4 line you get also 2 passers but not connected but one
pawn on c2 and with 2 pawns for black.
b) in the rxc4 line white may also prefer to stop the c-passer
but then loses rxb4.
At the shallow leafs junior simply goes for that of course and that causes
it to play rxc4 at a huge depth.
Also in the game in 2002, where rxc4 really is winning.
>White(1): epdpfga rxc4-after.epd rxc4-after.out
>PFGA: EPD record: 1
>middle-game phase
> clearing hash tables
> time surplus 0.00 time limit 83:20 (83:20)
> nss depth time score variation (1)
> 5 0.58 0.82 1. ... Ra6 2. cxb4 Bxb4 3. Ng3 Kg8
> 4. Kg1
> 5-> 0.60 0.82 1. ... Ra6 2. cxb4 Bxb4 3. Ng3 Kg8
> 4. Kg1
> 6 0.98 0.83 1. ... Ra6 2. h3 bxc3 3. Nxc3 Nc5 4.
> Bxf6+ Bxf6 5. Nd5 Bg5
> 6 1.69 0.78 1. ... Ra2 2. cxb4 Bxb4 3. Nc1 Rc2
> 4. Kg1 Ng4
> 6-> 2.00 0.78 1. ... Ra2 2. cxb4 Bxb4 3. Nc1 Rc2
> 4. Kg1 Ng4
> 7 2.85 0.86 1. ... Ra2 2. cxb4 Bxb4 3. Nc1 Ra1
> 4. Nd3 Rxd1 5. Rxd1 Bc3
> 7 5.47 0.73 1. ... Ra6 2. cxb4 Bxb4 3. Rd3 Kg8
> 4. Ng3 Bc5 5. Bh6
> 7-> 6.13 0.73 1. ... Ra6 2. cxb4 Bxb4 3. Rd3 Kg8
> 4. Ng3 Bc5 5. Bh6
> 8 9.44 0.74 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Bc5
> 4. Nd3 Bd4 5. Rb1 Ra2
> 8-> 12.00 0.74 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Bc5
> 4. Nd3 Bd4 5. Rb1 Ra2
> 9 20.53 0.77 1. ... Ra6 2. h3 Bc5 3. cxb4 Bxb4 4.
> Nc1 Nh7 5. Be3 Kg8 6. Rd5
> 9-> 30.58 0.77 1. ... Ra6 2. h3 Bc5 3. cxb4 Bxb4 4.
> Nc1 Nh7 5. Be3 Kg8 6. Rd5
> 10 53.54 0.74 1. ... Ra6 2. h3 Bc5 3. cxb4 Bxb4 4.
> Nc1 Nh7 5. Be3 Kg8 6. Nd3 Bc3
> 10-> 1:07 0.74 1. ... Ra6 2. h3 Bc5 3. cxb4 Bxb4 4.
> Nc1 Nh7 5. Be3 Kg8 6. Nd3 Bc3
> 11 1:59 0.76 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Be7
> 4. Nd3 Nh7 5. Bxe7 Qxe7 6. Qg3 h4 7.
> Qf2 Kg8
> 11-> 3:54 0.76 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Be7
> 4. Nd3 Nh7 5. Bxe7 Qxe7 6. Qg3 h4 7.
> Qf2 Kg8
> 12 4:56 0.76 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
> 4. Bh4 Nhf6 5. Nd3 Bc3 6. Bg5 Nh7 7.
> Nf4 exf4 8. Qxc3+
> 12-> 7:43 0.76 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
> 4. Bh4 Nhf6 5. Nd3 Bc3 6. Bg5 Nh7 7.
> Nf4 exf4 8. Qxc3+
> 13 13:15 0.60 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
> 4. Bh4 Kg8 5. Ne3 Bc5 6. Nd5 g5 7.
> b4 gxh4 8. bxc5 Nxc5 9. Qxh5 Nxe4 10.
> Qxh4
> 13-> 14:58 0.60 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Nh7
> 4. Bh4 Kg8 5. Ne3 Bc5 6. Nd5 g5 7.
> b4 gxh4 8. bxc5 Nxc5 9. Qxh5 Nxe4 10.
> Qxh4
> 14 28:35 0.70 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Ra1
> 4. Nd3 Rxd1 5. Rxd1 Bc3 6. Nc5 Rxc5
> 7. Rd6 Qe8 8. Bxf6+ Nxf6 9. Qxf6+ Kg8
> 10. Kg1
> 14-> 57:22 0.70 1. ... Ra6 2. cxb4 Bxb4 3. Nc1 Ra1
> 4. Nd3 Rxd1 5. Rxd1 Bc3 6. Nc5 Rxc5
> 7. Rd6 Qe8 8. Bxf6+ Nxf6 9. Qxf6+ Kg8
> 10. Kg1
> time=83:20 cpu=99% mat=0 n=2816371819 fh=92% nps=563k
> ext-> chk=73630779 cap=7156383 pp=895992 1rep=4108184 mate=392817
> predicted=0 nodes=2816371819 evals=588689396
> endgame tablebase-> probes done=0 successful=0
>PFGA: EPD record: 2
> clearing hash tables
> time surplus 0.00 time limit 83:20 (83:20)
> nss depth time score variation (1)
> 5-> 0.29 2.31 1. bxc4 b3 2. Ng3 Ra2 3. Kg1 Qxc4
> 6 0.36 2.26 1. bxc4 b3 2. Ng3 Ra4 3. Rd3 Qxc4
> 6-> 0.79 2.26 1. bxc4 b3 2. Ng3 Ra4 3. Rd3 Qxc4
> 7 1.22 2.47 1. bxc4 b3 2. Nc1 Rb8 3. Nd3 Ng4 4.
> Bxe7 Qxe7
> 7-> 2.01 2.47 1. bxc4 b3 2. Nc1 Rb8 3. Nd3 Ng4 4.
> Bxe7 Qxe7
> 8 2.49 2.58 1. bxc4 b3 2. Nc1 Rb8 3. Nd3 Qxc4 4.
> Nb2 Qe6
> 8-> 3.51 2.58 1. bxc4 b3 2. Nc1 Rb8 3. Nd3 Qxc4 4.
> Nb2 Qe6
> 9 6.17 2.48 1. bxc4 b3 2. Nc1 Ra3 3. Nd3 Ra6 4.
> Nb4 Bxb4 5. cxb4 Qxc4
> 9-> 9.31 2.48 1. bxc4 b3 2. Nc1 Ra3 3. Nd3 Ra6 4.
> Nb4 Bxb4 5. cxb4 Qxc4
> 10 21.82 2.34 1. bxc4 b3 2. Rd5 b2 3. Bxf6+ Nxf6
> 4. Rb5 Qxc4 5. Rxe5 Ra1 6. Rxe7 Qc6
> 7. Kg1 b1=Q 8. Rxb1 Rxb1+
> 10-> 30.42 2.34 1. bxc4 b3 2. Rd5 b2 3. Bxf6+ Nxf6
> 4. Rb5 Qxc4 5. Rxe5 Ra1 6. Rxe7 Qc6
> 7. Kg1 b1=Q 8. Rxb1 Rxb1+
> 11 43.97 2.26 1. bxc4 b3 2. Rd5 b2 3. Rb5 Ra2 4.
> Rb7 Nxe4 5. Bxe7 Nd2 6. Qd3 Nxf1 7.
> Rxd7
> 11-> 1:00 2.26 1. bxc4 b3 2. Rd5 b2 3. Rb5 Ra2 4.
> Rb7 Nxe4 5. Bxe7 Nd2 6. Qd3 Nxf1 7.
> Rxd7
> 12 2:17 1.87 1. bxc4 b3 2. Ng3 Qxc4 3. Rd2 Ra7 4.
> Rb2 Ra2 5. Rfb1 Rxb2 6. Rxb2 Bc5 7.
> h3
> 12-> 4:23 1.87 1. bxc4 b3 2. Ng3 Qxc4 3. Rd2 Ra7 4.
> Rb2 Ra2 5. Rfb1 Rxb2 6. Rxb2 Bc5 7.
> h3
> 13 8:06 1.92 1. bxc4 b3 2. Rd5 Nxd5 3. cxd5 Qg4
> 4. Qxf7+ Kh8 5. Qxe7 Qxe2 6. Kg1 b2
> 7. Bf6+ Nxf6 8. Qxf6+ Kh7 9. Qe7+ Kh6
> 10. Qxe5
> 13-> 10:41 1.92 1. bxc4 b3 2. Rd5 Nxd5 3. cxd5 Qg4
> 4. Qxf7+ Kh8 5. Qxe7 Qxe2 6. Kg1 b2
> 7. Bf6+ Nxf6 8. Qxf6+ Kh7 9. Qe7+ Kh6
> 10. Qxe5
> 14 15:44 1.74 1. bxc4 b3 2. Rd5 Nb6 3. Rb5 Nxc4 4.
> Rb7 Ng8 5. Bxe7 Nxe7 6. Qd3 b2 7. Rb1
> Ra2 8. Kg1 Kg8
> 14-> 26:05 1.74 1. bxc4 b3 2. Rd5 Nb6 3. Rb5 Nxc4 4.
> Rb7 Ng8 5. Bxe7 Nxe7 6. Qd3 b2 7. Rb1
> Ra2 8. Kg1 Kg8
> 15 39:47 1.69 1. bxc4 b3 2. Rd5 Nb6 3. Rb5 Nxc4 4.
> Rb7 Ng8 5. Bxe7 Nxe7 6. Qd3 Ra2 7.
> Kg1 Na5 8. Rb8 Rc2
> 15-> 68:37 1.69 1. bxc4 b3 2. Rd5 Nb6 3. Rb5 Nxc4 4.
> Rb7 Ng8 5. Bxe7 Nxe7 6. Qd3 Ra2 7.
> Kg1 Na5 8. Rb8 Rc2
> time=83:20 cpu=99% mat=-3 n=2866467651 fh=93% nps=573k
> ext-> chk=116079346 cap=5997465 pp=4414056 1rep=7924885
>mate=977316
> predicted=0 nodes=2866467651 evals=611144771
> endgame tablebase-> probes done=0 successful=0
>PFGA: EPD record: 3
> time surplus 0.00 time limit 83:20 (83:20)
> nss depth time score variation (1)
> 5-> 0.44 0.71 1. cxb4 Bxb4 2. Ng3 Nh7 3. Be3 Kg8
> 6 1.32 0.73 1. cxb4 Rxb4 2. Nc1 Nh7 3. Bxe7 Qxe7
> 4. Kg1 Kg8
> 6-> 2.12 0.73 1. cxb4 Rxb4 2. Nc1 Nh7 3. Bxe7 Qxe7
> 4. Kg1 Kg8
> 7 3.43 0.72 1. cxb4 Rxb4 2. Nc1 Kg8 3. Na2 Rb5
> 4. Rb1 Rbc5
> 7-> 5.39 0.72 1. cxb4 Rxb4 2. Nc1 Kg8 3. Na2 Rb5
> 4. Rb1 Rbc5
> 8 12.45 0.63 1. cxb4 Rxb4 2. Rd3 Rb7 3. Ng3 Nc5
> 4. Nd6 Rcb8 5. Nxb7 Nxd3 6. Qxd3 Rxb7
> 8-> 17.65 0.63 1. cxb4 Rxb4 2. Rd3 Rb7 3. Ng3 Nc5
> 4. Nd6 Rcb8 5. Nxb7 Nxd3 6. Qxd3 Rxb7
> 9 38.09 0.62 1. cxb4 Rxb4 2. Nc1 Rbb8 3. Na2 Bc5
> 4. Rb1 Nh7 5. Bh4 Ra8
> 9-> 48.53 0.62 1. cxb4 Rxb4 2. Nc1 Rbb8 3. Na2 Bc5
> 4. Rb1 Nh7 5. Bh4 Ra8
> 10 2:06 0.58 1. cxb4 Rxb4 2. Ng3 Rb5 3. Rd3 Rcb8
> 4. Qd1 Kg8 5. Rdf3 Rd8 6. Kg1
> 10-> 2:33 0.58 1. cxb4 Rxb4 2. Ng3 Rb5 3. Rd3 Rcb8
> 4. Qd1 Kg8 5. Rdf3 Rd8 6. Kg1
> 11 6:30 0.54 1. cxb4 Rxb4 2. Rd5 Rb7 3. Ng3 Rcc7
> 4. Rd3 Ra7 5. Be3 Nc5 6. Rc3 Kg8
> 11-> 7:34 0.54 1. cxb4 Rxb4 2. Rd5 Rb7 3. Ng3 Rcc7
> 4. Rd3 Ra7 5. Be3 Nc5 6. Rc3 Kg8
> 12 11:27 0.53 1. cxb4 Rxb4 2. Rd5 Rc7 3. Ng3 Rb8
> 4. Rdd1 Qg4 5. Bxf6+ Bxf6 6. Qf2 Qf4
> 7. Qc2 Qg4 8. Kg1
> 12-> 14:21 0.53 1. cxb4 Rxb4 2. Rd5 Rc7 3. Ng3 Rb8
> 4. Rdd1 Qg4 5. Bxf6+ Bxf6 6. Qf2 Qf4
> 7. Qc2 Qg4 8. Kg1
> 13 24:11 0.51 1. cxb4 Rxb4 2. Rd5 Rc7 3. Ng3 Rb8
> 4. Rdd1 Nh7 5. Bxe7 Qxe7 6. Rd5 Ng5
> 7. Qe3 h4 8. Ne2
> 13-> 31:02 0.51 1. cxb4 Rxb4 2. Rd5 Rc7 3. Ng3 Rb8
> 4. Rdd1 Nh7 5. Bxe7 Qxe7 6. Rd5 Ng5
> 7. Qe3 h4 8. Ne2
> time=83:20 cpu=99% mat=0 n=2745861219 fh=93% nps=549k
> ext-> chk=77039881 cap=7288888 pp=398469 1rep=3810510 mate=355597
> predicted=0 nodes=2745861219 evals=546269397
> endgame tablebase-> probes done=0 successful=0
>PFGA: EPD record: 4
> time surplus 0.00 time limit 83:20 (83:20)
> nss depth time score variation (1)
> 5 0.56 0.58 1. Kg1 Bc5+ 2. Kh1 Nh7 3. Bd2 bxc3
> 4. Bxc3
> 5-> 0.65 0.58 1. Kg1 Bc5+ 2. Kh1 Nh7 3. Bd2 bxc3
> 4. Bxc3
> 6 1.13 0.37 1. Kg1 Qg4 2. Qxg4 hxg4 3. cxb4 Re6
> 4. Nc3 Bxb4
> 6 1.88 0.44 1. Bh4 Ra2 2. cxb4 Bxb4 3. Nc1 Rc2
> 4. Kg1
> 6 2.24 0.58 1. cxb4 Bxb4 2. Ng3 Kg8 3. Rd3 Bc5
> 4. Bh6 <HT>
> 6-> 3.14 0.58 1. cxb4 Bxb4 2. Ng3 Kg8 3. Rd3 Bc5
> 4. Bh6 <HT>
> 7 3.85 0.46 1. cxb4 Bxb4 2. Ng3 Kg8 3. Rd3 Nh7
> 4. Bd2 Bc5
> 7-> 7.51 0.46 1. cxb4 Bxb4 2. Ng3 Kg8 3. Rd3 Nh7
> 4. Bd2 Bc5
> 8 10.66 0.60 1. cxb4 Bxb4 2. Nc1 Nh7 3. Bh4 Kg8
> 4. Nd3 Be7 5. Bxe7 Qxe7
> 8-> 15.54 0.60 1. cxb4 Bxb4 2. Nc1 Nh7 3. Bh4 Kg8
> 4. Nd3 Be7 5. Bxe7 Qxe7
> 9 21.46 0.51 1. cxb4 Bxb4 2. Nc1 Qg4 3. Nd3 Qxg5
> 4. Nxb4 Ra7 5. Nd5 Ra2
> 9-> 42.46 0.51 1. cxb4 Bxb4 2. Nc1 Qg4 3. Nd3 Qxg5
> 4. Nxb4 Ra7 5. Nd5 Ra2
> 10 59.56 0.56 1. cxb4 Bxb4 2. Nc1 Be7 3. Nd3 Ng4
> 4. Bd2 Rb8 5. Bc3 Rxb3 6. Ndxe5 <HT>
> 10-> 1:19 0.56 1. cxb4 Bxb4 2. Nc1 Be7 3. Nd3 Ng4
> 4. Bd2 Rb8 5. Bc3 Rxb3 6. Ndxe5 <HT>
> 11 1:44 0.53 1. cxb4 Bxb4 2. Nc1 Be7 3. Nd3 Ng4
> 4. Bxe7 Qxe7 5. Qg3 Ndf6 6. Rfe1 Rd8
> 7. Kg1
> 11-> 2:30 0.53 1. cxb4 Bxb4 2. Nc1 Be7 3. Nd3 Ng4
> 4. Bxe7 Qxe7 5. Qg3 Ndf6 6. Rfe1 Rd8
> 7. Kg1
> 12 4:52 0.40 1. cxb4 Bxb4 2. Nc1 Nh7 3. Bh4 Kg8
> 4. Nd3 Be7 5. Bxe7 Qxe7 6. Qg3 Ng5
> 7. Ndxe5 Nxe4
> 12 22:34 0.47 1. Bh4 Rb8 2. cxb4 Bxb4 3. Rd3 Kg8
> 4. Nc3 Bxc3 5. Rxc3 Qg4 6. Qxg4 Nxg4
> 7. Rcf3 f6
> 12-> 22:53 0.47 1. Bh4 Rb8 2. cxb4 Bxb4 3. Rd3 Kg8
> 4. Nc3 Bxc3 5. Rxc3 Qg4 6. Qxg4 Nxg4
> 7. Rcf3 f6
> 13 34:56 0.40 1. Bh4 Bc5 2. cxb4 Bxb4 3. Ne3 Ra2
> 4. Rc1 Rc5 5. Rxc5 Bxc5 6. Nc3 Rd2
> 7. Nc4 Rc2 8. Bg5
> 13 41:47 0.54 1. cxb4 Bxb4 2. Nc1 Ng4 3. Rd5 Nb6
> 4. Rb5 Nxc4 5. Rxb4 Na5 6. h3 Nh6 7.
> Ra4 Rc2
> 13-> 44:52 0.54 1. cxb4 Bxb4 2. Nc1 Ng4 3. Rd5 Nb6
> 4. Rb5 Nxc4 5. Rxb4 Na5 6. h3 Nh6 7.
> Ra4 Rc2
> 14 54:25 0.48 1. cxb4 Bxb4 2. Nc1 Nh7 3. Be3 Nhf6
> 4. Nd3 Bc3 5. Bg5 Nh7 6. Nf4 Qg4 7.
> Be7 Qxf3 8. Rxf3 Bd4
> 14-> 64:49 0.48 1. cxb4 Bxb4 2. Nc1 Nh7 3. Be3 Nhf6
> 4. Nd3 Bc3 5. Bg5 Nh7 6. Nf4 Qg4 7.
> Be7 Qxf3 8. Rxf3 Bd4
> time=83:20 cpu=99% mat=0 n=2803566901 fh=93% nps=560k
> ext-> chk=74189357 cap=7499086 pp=691624 1rep=3724182 mate=566175
> predicted=0 nodes=2803566901 evals=561810960
> endgame tablebase-> probes done=0 successful=0
>PFGA: EPD record: 5
> time surplus 0.00 time limit 83:20 (83:20)
> nss depth time score variation (1)
> 5-> 0.28 0.59 1. cxb4 Bxb4 2. Rd3 Nh7 3. Bd2 Bc5
> 6 0.41 0.72 1. cxb4 Bxb4 2. Rd3 Nh7 3. Be3 Kg8
> 4. Rd5
> 6-> 0.90 0.72 1. cxb4 Bxb4 2. Rd3 Nh7 3. Be3 Kg8
> 4. Rd5
> 7 1.57 0.61 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bh4 g5 4.
> Be1 Nhf6
> 7-> 2.85 0.61 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bh4 g5 4.
> Be1 Nhf6
> 8 4.54 0.62 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bh4 Nb6
> 4. Nd5 Nxc4 5. Nxb4
> 8-> 11.14 0.62 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bh4 Nb6
> 4. Nd5 Nxc4 5. Nxb4
> 9 17.28 0.58 1. cxb4 Bxb4 2. Ne3 Nh7 3. Bh4 Ra2
> 4. Nd5 Bd2 5. Nec3 Rb2
> 9-> 32.91 0.58 1. cxb4 Bxb4 2. Ne3 Nh7 3. Bh4 Ra2
> 4. Nd5 Bd2 5. Nec3 Rb2
> 10 44.20 0.62 1. cxb4 Bxb4 2. Ne3 Nh7 3. Bh4 Ra2
> 4. Nd5 Bd2 5. Kg1 Rcc2 6. Be7
> 10-> 1:02 0.62 1. cxb4 Bxb4 2. Ne3 Nh7 3. Bh4 Ra2
> 4. Nd5 Bd2 5. Kg1 Rcc2 6. Be7
> 11 2:17 0.53 1. cxb4 Bxb4 2. Nc1 Nh7 3. Be3 Kg8
> 4. Bh6 Bc5 5. Rd2 Nhf6 6. Nd3 Bd4
> 11 3:10 0.62 1. Rd3 Ra6 2. cxb4 Bxb4 3. Nc3 Nh7
> 4. Be3 Nc5 5. Bxc5 Bxc5 6. Qg3 Bd4
> 7. Nd5
> 11-> 3:41 0.62 1. Rd3 Ra6 2. cxb4 Bxb4 3. Nc3 Nh7
> 4. Be3 Nc5 5. Bxc5 Bxc5 6. Qg3 Bd4
> 7. Nd5
> 12 5:48 0.41 1. Rd3 Ra6 2. Rdd1 Kg8 3. cxb4 Bxb4
> 4. Nc1 Be7 5. Nd3 Ng4 6. Bxe7 Qxe7
> 7. Nf2 Ndf6 <HT>
> 12 11:51 0.59 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bc1 f6 4.
> Nd5 Bc5 5. Be3 Qg4 6. b4 Bxe3 7. Ncxe3
> Qxf3 8. Rxf3
> 12-> 13:29 0.59 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bc1 f6 4.
> Nd5 Bc5 5. Be3 Qg4 6. b4 Bxe3 7. Ncxe3
> Qxf3 8. Rxf3
> 13 15:38 0.71 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bh4 Kg8
> 4. Nd5 Bc5 5. h3 g5 6. Qg3 f6 7. Rd2
> Bd4
> 13-> 19:01 0.71 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bh4 Kg8
> 4. Nd5 Bc5 5. h3 g5 6. Qg3 f6 7. Rd2
> Bd4
> 14 25:45 0.68 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bh4 g5 4.
> Nd5 Bc5 5. Be1 g4 6. Qf5 Qxf5 7. Rxf5
> f6 8. Rxh5 Ra2
> 14-> 34:16 0.68 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bh4 g5 4.
> Nd5 Bc5 5. Be1 g4 6. Qf5 Qxf5 7. Rxf5
> f6 8. Rxh5 Ra2
> 15 71:22 0.59 1. cxb4 Bxb4 2. Nc3 Nh7 3. Bc1 f6 4.
> Nd5 Bc5 5. Rd3 Ra2 6. Nc3 Ra7 7. Nb5
> Ra6 8. Be3 Ra2
> time=83:20 cpu=99% mat=0 n=2928460504 fh=94% nps=585k
> ext-> chk=109862443 cap=6618907 pp=553495 1rep=5843625 mate=796943
> predicted=0 nodes=2928460504 evals=456672539
> endgame tablebase-> probes done=0 successful=0
>PFGA: EPD record: 6
> time surplus 0.00 time limit 83:20 (83:20)
> nss depth time score variation (1)
> 5-> 0.47 0.62 1. Nc1 Rc2 2. cxb4 Bxb4 3. Kg1 Ng4
> 6 0.67 0.66 1. Nc1 Rc2 2. cxb4 Bxb4 3. Nd3 Nh7
> 4. Bh6+ Kxh6 5. Nxb4
> 6-> 1.26 0.66 1. Nc1 Rc2 2. cxb4 Bxb4 3. Nd3 Nh7
> 4. Bh6+ Kxh6 5. Nxb4
> 7 1.58 0.66 1. Nc1 Rc2 2. cxb4 Bxb4 3. Nd3 Nh7
> 4. Bh6+ Kxh6 5. Nxb4
> 7-> 2.98 0.66 1. Nc1 Rc2 2. cxb4 Bxb4 3. Nd3 Nh7
> 4. Bh6+ Kxh6 5. Nxb4
> 8 4.44 0.64 1. Nc1 Ra1 2. Bxf6+ Nxf6 3. cxb4 Bxb4
> 4. Nd3 Rxd1 5. Rxd1 Bc3 6. Kg1
> 8-> 8.68 0.64 1. Nc1 Ra1 2. Bxf6+ Nxf6 3. cxb4 Bxb4
> 4. Nd3 Rxd1 5. Rxd1 Bc3 6. Kg1
> 9 10.52 0.73 1. Nc1 Ra1 2. cxb4 Bxb4 3. Nd3 Rxd1
> 4. Rxd1 Bc3 5. Nf2 Nh7 6. Bh6+ Kxh6
> 7. Qxc3
> 9 16.26 0.78 1. cxb4 Bxb4 2. Nc3 Bxc3 3. Rd6 Qg4
> 4. Rxf6 Qxf3 5. R6xf3 f6 6. Bxf6+ Nxf6
> 7. Rxf6
> 9-> 20.53 0.78 1. cxb4 Bxb4 2. Nc3 Bxc3 3. Rd6 Qg4
> 4. Rxf6 Qxf3 5. R6xf3 f6 6. Bxf6+ Nxf6
> 7. Rxf6
> 10 31.03 0.60 1. cxb4 Bxb4 2. Nc1 Ra1 3. Nd3 Rxd1
> 4. Rxd1 Nh7 5. Be3 Bc3 6. Kg1 Kg8
> 10-> 1:04 0.60 1. cxb4 Bxb4 2. Nc1 Ra1 3. Nd3 Rxd1
> 4. Rxd1 Nh7 5. Be3 Bc3 6. Kg1 Kg8
> 11 1:29 0.64 1. cxb4 Bxb4 2. Nc1 Ra1 3. Nd3 Rxd1
> 4. Rxd1 Bc3 5. Rc1 Bd4 6. Rf1 Nh7 7.
> Bh4
> 11-> 2:55 0.64 1. cxb4 Bxb4 2. Nc1 Ra1 3. Nd3 Rxd1
> 4. Rxd1 Bc3 5. Rc1 Bd4 6. Rf1 Nh7 7.
> Bh4
> 12 6:52 0.59 1. cxb4 Bxb4 2. Nc3 Ra3 3. Nd5 Rxc4
> 4. Nxf6 Rc3 5. Qf2 Bc5 6. Qd2 Bd4 7.
> b4
> 12-> 14:25 0.59 1. cxb4 Bxb4 2. Nc3 Ra3 3. Nd5 Rxc4
> 4. Nxf6 Rc3 5. Qf2 Bc5 6. Qd2 Bd4 7.
> b4
> 13 16:35 ++ 1. cxb4!!
> 13 19:01 0.99 1. cxb4 Bxb4 2. Nc3 Ra3 3. Nd5 Rxc4
> 4. Nxf6 Rc3 5. Qf2 Nf8 6. Nd5 Rcxb3
> 7. Bf6+ Kg8 8. Kg1
> 13-> 21:58 0.99 1. cxb4 Bxb4 2. Nc3 Ra3 3. Nd5 Rxc4
> 4. Nxf6 Rc3 5. Qf2 Nf8 6. Nd5 Rcxb3
> 7. Bf6+ Kg8 8. Kg1
> 14 30:23 1.00 1. cxb4 Bxb4 2. Nc3 Ra3 3. Nd5 Rxc4
> 4. Nxf6 Rc3 5. Qf2 Nf8 6. Nd5 Rcxb3
> 7. Bf6+ Kg8 8. Nc7 Qg4 9. Bxe5
> 14-> 39:14 1.00 1. cxb4 Bxb4 2. Nc3 Ra3 3. Nd5 Rxc4
> 4. Nxf6 Rc3 5. Qf2 Nf8 6. Nd5 Rcxb3
> 7. Bf6+ Kg8 8. Nc7 Qg4 9. Bxe5
> 15 74:52 1.10 1. cxb4 Bxb4 2. Nc3 Ra7 3. Nd5 Nxd5
> 4. exd5 Qe8 5. Rde1 Bxe1 6. Nd6 Qf8
> 7. Qxf7+ Qxf7 8. Rxf7+ Kg8 9. Nxc8
> Kxf7 10. Nxa7
> time=83:20 cpu=99% mat=0 n=2868189498 fh=93% nps=573k
> ext-> chk=89838695 cap=6388724 pp=1325508 1rep=5594729 mate=941567
> predicted=0 nodes=2868189498 evals=541151420
> endgame tablebase-> probes done=0 successful=0
>PFGA: EPD record: 7
> time surplus 0.00 time limit 83:20 (83:20)
> nss depth time score variation (1)
> 6 0.27 0.79 1. Nxc3 Bc5 2. Nd5 Nh7 3. Be3 Ra2
> 6-> 0.41 0.79 1. Nxc3 Bc5 2. Nd5 Nh7 3. Be3 Ra2
> 7 0.90 0.90 1. Nxc3 Bc5 2. Nd5 Nh7 3. Bh4 Ra2 4.
> b4
> 7-> 1.14 0.90 1. Nxc3 Bc5 2. Nd5 Nh7 3. Bh4 Ra2 4.
> b4
> 8 1.92 0.85 1. Nxc3 Bc5 2. Nd5 Nh7 3. Bh4 Ra2 4.
> b4 Bd4
> 8-> 2.68 0.85 1. Nxc3 Bc5 2. Nd5 Nh7 3. Bh4 Ra2 4.
> b4 Bd4
> 9 4.70 0.85 1. Nxc3 Bc5 2. Nd5 Nh7 3. Bh4 Ra2 4.
> b4 Bd4 5. Rd2
> 9-> 6.44 0.85 1. Nxc3 Bc5 2. Nd5 Nh7 3. Bh4 Ra2 4.
> b4 Bd4 5. Rd2
> 10 13.09 0.93 1. Nxc3 Bc5 2. Na4 Ra6 3. Nxc5 Rxc5
> 4. Ne3 Nh7 5. Bd8 Rc8 6. Bh4
> 10-> 19.59 0.93 1. Nxc3 Bc5 2. Na4 Ra6 3. Nxc5 Rxc5
> 4. Ne3 Nh7 5. Bd8 Rc8 6. Bh4
> 11 42.02 0.79 1. Nxc3 Bc5 2. Bh4 Nh7 3. Rd5 Kg8 4.
> Rfd1 Nhf8 5. Bg5 Nh7 6. Bh6
> 11-> 1:07 0.79 1. Nxc3 Bc5 2. Bh4 Nh7 3. Rd5 Kg8 4.
> Rfd1 Nhf8 5. Bg5 Nh7 6. Bh6
> 12 3:05 0.98 1. Nxc3 Bc5 2. Na4 Ra6 3. Nxc5 Rxc5
> 4. Kg1 Kg8 5. Bxf6 Nxf6 6. Rd8+ Ne8
> 7. Rd5 Qe7 8. Qf2
> 12-> 4:35 0.98 1. Nxc3 Bc5 2. Na4 Ra6 3. Nxc5 Rxc5
> 4. Kg1 Kg8 5. Bxf6 Nxf6 6. Rd8+ Ne8
> 7. Rd5 Qe7 8. Qf2
> 13 6:38 0.92 1. Nxc3 Bc5 2. Na4 Ra6 3. Nxc5 Rxc5
> 4. Kg1 Rac6 5. Rd3 Qg4 6. Be3 Qxf3
> 7. Rxf3 Rb5 8. Nd6
> 13-> 9:02 0.92 1. Nxc3 Bc5 2. Na4 Ra6 3. Nxc5 Rxc5
> 4. Kg1 Rac6 5. Rd3 Qg4 6. Be3 Qxf3
> 7. Rxf3 Rb5 8. Nd6
> 14 27:40 0.88 1. Nxc3 Bf8 2. Bh4 Bc5 3. Nd5 Nh7 4.
> Rb1 g5 5. Bg3 h4 6. Bf2 g4 7. Qd3 h3
> 8. Bxc5 Nxc5
> 14-> 32:16 0.88 1. Nxc3 Bf8 2. Bh4 Bc5 3. Nd5 Nh7 4.
> Rb1 g5 5. Bg3 h4 6. Bf2 g4 7. Qd3 h3
> 8. Bxc5 Nxc5
> 15 82:15 0.87 1. Nxc3 Bc5 2. Na4 Ra6 3. Nxc5 Rxc5
> 4. Rd2 Qg4 5. Qe3 Rc7 6. Rdf2 Re6 7.
> h3 Qxe4 8. Qxe4 Nxe4 9. Rxf7+ Kg8
> time=83:20 cpu=99% mat=-1 n=2908592817 fh=93% nps=581k
> ext-> chk=88945758 cap=6500986 pp=500409 1rep=5145703 mate=962904
> predicted=0 nodes=2908592817 evals=513415082
> endgame tablebase-> probes done=0 successful=0
>White(1):
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