Author: Frank E. Oldham
Date: 18:45:06 09/23/04
Go up one level in this thread
On September 23, 2004 at 13:01:20, Mihaly Szalai wrote:
>From the game Gajewski - Bartel, 2002.
>
>[D]r4rk1/1pN3p1/2b1p1p1/p3p3/7q/P3B3/1PP3P1/R2QR1K1 b - - 0 1
>
>1... Rf3!! 2. Re2 (2. gxf3 Qg3+ 3. Kf1 Rf8 -+) (2. Nxa8 Rh3!! 3. Kf1 (3.
>Qd8+ Qxd8 4. gxh3 Qd5!) 3... Bb5+ 4. Qd3 (4. Re2 Rh1+ 5. Bg1 Qf4+ 6. Ke1
>Rxg1#) 4... Bxd3+ 5. cxd3 Rxe3 6. Rxe3 Qh1+ -+) (2. Qd6!? Rd8! 3. Qxe5 (3. Qxe6+
>Kh7 4. Re2 Rg3 5. Qxe5 Qh3 6. Qxg3 Qxg3) 3... Rf5 4. Qh2 Rd2!! 5. Qxh4 (5. Bxd2
>Qf2+ 6. Kh1
>Bxg2+!) 5... Rxg2+ 6. Kh1 Rxc2+ 7. Kg1 Rg2+ 8. Kh1 Rxb2+ 9. Kg1 Rg2+ 10. Kh1
>Rg4+ 11. Kh2 Rxh4+ 12. Kg3 Rc4 13. Rf1 Rc3 14. Rxf5 gxf5 -+) 2... Rh3 3. gxh3
>(3. Kf1 Rh1+ 4. Bg1 Rf8+ -+) 3... Qg3+ 4. Kf1 Qxh3+ 5. Kf2 Rf8+ 6. Ke1 Qf1+ 7.
>Kd2 Rd8+ 8. Kc3 Rxd1 0-1
>
>Junior found it in reasonable time.
tough position!
crafty19.17 after a deep search is convinced that Rad8 is best --
it briefly sees Rf3 in ply 16, but quickly changes
15-> 19:01 -0.01 1. ... Rac8 2. Nxe6 Rf5 3. Ng5 Bxg2
4. Kxg2 Rxg5+ 5. Bxg5 Qxg5+ 6. Kh3
Qh6+ 7. Kg2 Qg5+ (s=5)
16 21:31 -0.01 1. ... Rac8 2. Nxe6 Rf5 3. Ng5 Bxg2
4. Kxg2 Rxg5+ 5. Bxg5 Qxg5+ 6. Kh3
Qh6+ 7. Kg2 Qg5+ (s=4)
16 58:01 -0.17 1. ... Rf3 2. Qd6 Rd8 3. Qxe5 Rf5 4.
Qh2 Rd2 5. Qxh4 Rxg2+ 6. Kh1 Rxc2+
7. Kg1 Rg2+ 8. Kh1 Rxb2+ 9. Kg1 Rg2+
10. Kh1 Rg4+ 11. Kh2 Rxh4+ 12. Kg3
Re4 13. Rad1 Bd5 (s=3)
16 72:22 -1 1. ... Rad8!!
16 76:25 -0.48 1. ... Rad8 2. Qe2 Rf5 3. Rad1 Rxd1
4. Qxd1 Bf3 5. gxf3 Qg3+ 6. Kf1 Rxf3+
7. Ke2 Rxe3+ 8. Kd2 Rxe1 9. Qxe1 Qxe1+
10. Kxe1 Kf7 11. Ke2 Kf6 12. Kf3
16-> 96:23 -0.48 1. ... Rad8 2. Qe2 Rf5 3. Rad1 Rxd1
4. Qxd1 Bf3 5. gxf3 Qg3+ 6. Kf1 Rxf3+
7. Ke2 Rxe3+ 8. Kd2 Rxe1 9. Qxe1 Qxe1+
10. Kxe1 Kf7 11. Ke2 Kf6 12. Kf3 (s=6)
17 100:38 -0.51 1. ... Rad8 2. Qe2 Rf5 3. Rad1 Rxd1
4. Qxd1 Bf3 5. gxf3 Qg3+ 6. Kf1 Rxf3+
7. Ke2 Rxe3+ 8. Kd2 Rxe1 9. Qxe1 Qxe1+
10. Kxe1 Kf7 11. Ke2 g5 12. Ke3 Kf6
(s=5)
17-> 178:30 -0.51 1. ... Rad8 2. Qe2 Rf5 3. Rad1 Rxd1
4. Qxd1 Bf3 5. gxf3 Qg3+ 6. Kf1 Rxf3+
7. Ke2 Rxe3+ 8. Kd2 Rxe1 9. Qxe1 Qxe1+
10. Kxe1 Kf7 11. Ke2 g5 12. Ke3 Kf6
(s=8)
18 190:15 -0.71 1. ... Rad8 2. Qe2 Rf5 3. Rad1 Rxd1
4. Qxd1 Rh5 5. Kf1 Qh1+ 6. Ke2 Qxg2+
7. Kd3 Rh2 8. Kc3 Bd7 9. Na8 Qc6+ 10.
Kb3 a4+ 11. Ka2 Qxc2 12. Qxc2 Rxc2
13. Nb6 (s=7)
18-> 415:48 -0.71 1. ... Rad8 2. Qe2 Rf5 3. Rad1 Rxd1
4. Qxd1 Rh5 5. Kf1 Qh1+ 6. Ke2 Qxg2+
7. Kd3 Rh2 8. Kc3 Bd7 9. Na8 Qc6+ 10.
Kb3 a4+ 11. Ka2 Qxc2 12. Qxc2 Rxc2
13. Nb6 (s=8)
19 423:15 1/54* 1. ... Rad8
time=423:27 cpu=393% mat=1 n=56954321063 fh=27% nps=2.24M
ext-> chk=518442682 cap=114521146 pp=35252051 1rep=385214312
mate=22747357
predicted=0 nodes=56954321063 evals=1252390437 50move=0
endgame tablebase-> probes=0 hits=0
SMP-> split=11659 stop=2131 data=12/64 cpu=1664:40
elap=423:27
Frank
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