Author: Dann Corbit
Date: 09:32:48 02/12/99
Rd7 is what pops up initially, but after a bit of cogitation, most programs turn
to e5. For instance, here is the initial Crafty output:
EPD Kit revision date: 1996.04.21
unable to open book file [e:/crafty/release/book.bin].
book is disabled
unable to open book file [e:/crafty/release/books.bin].
search time set to 7200.00.
using cpu time
Crafty 16.4 vs ferret
pondering enabled.
EGTB cache memory = 16M bytes.
hash table memory = 48M bytes.
pawn hash table memory = 8M bytes.
play best book line after search.
EGTB access enabled
using tbpath=e:/crafty/release/tb
5 piece tablebase files found
Crafty v16.4
puzzling over a move to ponder.
clearing hash tables
depth time score variation (1)
5-> 1.32 0.21 1. ... Rd7 2. Rac1 Rd2 3. Bc3 R2d3
6 1.99 0.24 1. ... Rd7 2. Red1 f5 3. Rac1 Bd6 4.
Rxc2 Qxc2
6-> 2.17 0.24 1. ... Rd7 2. Red1 f5 3. Rac1 Bd6 4.
Rxc2 Qxc2
7 3.17 0.18 1. ... Rd7 2. Red1 f6 3. Qb5 Rd5 4.
Qd3 Qxd3 5. Rxd3
7-> 4.04 0.18 1. ... Rd7 2. Red1 f6 3. Qb5 Rd5 4.
Qd3 Qxd3 5. Rxd3
8 7.44 0.21 1. ... Rd7 2. Qb5 Rd5 3. Qa6 e5 4.
Reb1 Qc4 5. Qxc4 Rxc4
8-> 8.60 0.21 1. ... Rd7 2. Qb5 Rd5 3. Qa6 e5 4.
Reb1 Qc4 5. Qxc4 Rxc4
9 16.89 0.21 1. ... Rd7 2. f4 Rd2 3. Re2 Rd1+ 4.
Rxd1 Qxd1+ 5. Kg2 Qc1 6. Qd3 Bd6
9-> 21.55 0.21 1. ... Rd7 2. f4 Rd2 3. Re2 Rd1+ 4.
Rxd1 Qxd1+ 5. Kg2 Qc1 6. Qd3 Bd6
10 44.30 0.18 1. ... Rd7 2. Rec1 Rdc7 3. Rxc2 Qxc2
4. Qb5 Qd2 5. Rf1 Rc1 6. Qa6 Rc7
10 52.51 0.21 1. ... e5 2. Bxe5 Rdd2 3. Qf1 Qd5 4.
Bd4 Qf3 5. Rac1 Qxf2+ 6. Qxf2 Rxf2
7. Rxc2 Rxc2
10-> 1:01 0.21 1. ... e5 2. Bxe5 Rdd2 3. Qf1 Qd5 4.
Bd4 Qf3 5. Rac1 Qxf2+ 6. Qxf2 Rxf2
7. Rxc2 Rxc2
11 1:12 0.11 1. ... e5 2. Bxe5 Rdd2 3. Qf1 Qd5 4.
Bd4 Qf3 5. Rac1 Qxf2+ 6. Qxf2 Rxf2
7. Rxc2 Rxc2 8. Rd1
11-> 2:38 0.11 1. ... e5 2. Bxe5 Rdd2 3. Qf1 Qd5 4.
Bd4 Qf3 5. Rac1 Qxf2+ 6. Qxf2 Rxf2
7. Rxc2 Rxc2 8. Rd1
12 3:10 0.21 1. ... e5 2. Bxe5 Rdd2 3. Qf1 Qd5 4.
Bf4 Qf3 5. Rac1 Qxf2+ 6. Qxf2 Rxf2
7. Rxc2 Rxc2 8. e4 Be7
12-> 4:35 0.21 1. ... e5 2. Bxe5 Rdd2 3. Qf1 Qd5 4.
Bf4 Qf3 5. Rac1 Qxf2+ 6. Qxf2 Rxf2
7. Rxc2 Rxc2 8. e4 Be7
13 6:29 0.13 1. ... e5 2. Bxe5 Rdd2 3. Qf1 Qd5 4.
Bf4 Qf3 5. Rec1 Qxf2+ 6. Qxf2 Rxf2
7. Rxc2 Rxc2 8. e4 a5 9. b5
But I think it may be wrong. After letting Crafty think for a long time on the
problem, it switches back to Rd7.
3r1bk1/p4ppp/Qp2p3/8/1P1B4/Pq2P1P1/2r2P1P/R3R1K1 b - -; acd 15; acn 1086624995;
ce 28; pv Rd7 Rec1 f6 Rxc2 Qxc2 f4 Re7 Rf1 e5 Rf2 Qc1+ Rf1 Qc7 Bb2 Qc2 Rf2 Qe4
bm e5; pm Rd7; id "LCTII.POS.06"
So which is it? Rd7 or e5?
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