Test postion: Monster Kasparov move in simul

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Albert Silver
Posts: 3019
Joined: Wed Mar 08, 2006 9:57 pm
Location: Rio de Janeiro, Brazil

Test postion: Monster Kasparov move in simul

Post by Albert Silver »

Just a comment: I would like to encourage others who post test positions to precede them with the words "Test position". The reason is simply that not only does it identify the type of content, but if anyone should decide to search for test positions using the search function, they will be that much easier to find. Just my 2 cents.

This move was played by Kasparov in a simul in Zurich at the city's 2000-year jubilee, and attests to his amazing ability even in simuls. True, it is winning, and the obvious choice of 36.Nxf7 would still win, but his move is nevertheless stronger and engines have an incredibly hard time finding it.

[D]6k1/R4pp1/3N4/3P2Pp/3P2b1/3K4/7r/8 w - - 0 36

36.g6!!

The game played out 36...fxg6 37.Ra8+ Kh7 38.Nf7 g5 39.Rh8+ Kg6 40.Ne5+ Kf5 41.Rf8 mate

Here is Stockfish 1.6.2 at it on my rig (2 x 3.6GHz):

Analysis by Stockfish 1.6.2 JA 64bit:

+- (2.86) Depth: 13 00:00:00 2416kN
36.Nxf7 Rh3+ 37.Ke4 Rh1 38.Ne5 Re1+ 39.Kf4 Rf1+ 40.Kg3 Rd1 41.g6 Bc8 42.Nc6 Rc1 43.Kh4 Rh1+ 44.Kg5
+- (3.39) Depth: 14 00:00:01 3952kN
36.Nxf7 Rh3+ 37.Ke4 Rh1 38.Ne5 Re1+ 39.Kf4 Rf1+ 40.Kg3 Rf8 41.Nxg4 hxg4 42.d6 Rd8 43.g6 Kf8 44.Rf7+ Ke8 45.Re7+ Kf8 46.Re6 Re8 47.d5 Rb8 48.Kxg4
+- (3.35) Depth: 15 00:00:03 10202kN
36.Nxf7 Rh3+ 37.Ke4 Rh1 38.Ne5 Re1+ 39.Kf4 Rf1+ 40.Kg3 Rf8 41.Nxg4 hxg4 42.d6 Rd8 43.g6 Kf8 44.Rf7+ Ke8 45.Re7+ Kf8 46.Re6 Re8 47.d5 Rb8 48.Kxg4 Re8 49.Kf5 Rb8 50.d7
+- (3.83) Depth: 16 00:00:05 15510kN
36.Nxf7 Bf5+ 37.Ke3 Rg2 38.Ne5 h4 39.d6 Rxg5 40.d7 Bxd7 41.Nxd7 Rg1 42.Ne5 h3 43.Ra2 g5 44.Kf3 Rd1 45.Ke4 Rg1 46.d5 Rd1 47.Rh2 Re1+ 48.Kd4 Rd1+ 49.Kc5 Re1
+- (3.47) Depth: 17 00:00:10 32771kN
36.Nxf7 Bf5+ 37.Ke3 Rg2 38.Ne5 h4 39.d6 Rxg5 40.d7 Bxd7 41.Nxd7 Rg1 42.Ne5 h3 43.Ra2 g5 44.Kf3 Rd1 45.Ke4 Rg1 46.d5 Rg2 47.Ra1 Re2+ 48.Kf5 Rd2 49.Ra8+ Kh7 50.Ra7+ Kg8 51.Ke6
+- (3.71) Depth: 18 00:00:14 45447kN
36.Nxf7 Bf5+ 37.Ke3 Rg2 38.Ne5 h4 39.d6 Rxg5 40.d7 Bxd7 41.Nxd7 Rg1 42.Ne5 h3 43.Ra2 g5 44.Kf3 Rd1 45.Ke4 Rg1 46.d5 Rg2 47.Ra1 h2 48.Rh1 Re2+ 49.Kf5 Rd2 50.Ke6 Kh7 51.d6 Kg7
+- (3.83) Depth: 19 00:00:22 74900kN
36.Nxf7 Bf5+ 37.Ke3 Rg2 38.Ne5 h4 39.d6 Rxg5 40.d7 Bxd7 41.Rxd7 Rh5 42.Rd8+ Kh7 43.Rf8 h3 44.Rf1 Kg8 45.Rh1 Kf8 46.Kf3 h2 47.Kg3 Ke7 48.Rxh2 Rxh2 49.Kxh2 Ke6 50.Kg3 Kd5 51.Nf3 Ke4 52.Kg4 g6
+- (4.04) Depth: 20 00:00:35 116mN
36.Nxf7 Bf5+ 37.Ke3 Rg2 38.Ne5 h4 39.d6 Rxg5 40.d7 Bxd7 41.Rxd7 Rh5 42.Rd8+ Kh7 43.Ra8 h3 44.Ra1 g6 45.Rg1 Rg5 46.Rh1 Rh5 47.Kf4 Kg7 48.Kg3 Kf6 49.Rxh3 Rxh3+ 50.Kxh3 Kf5 51.Nc6 Ke4 52.Kg4 Kd5
+- (4.04) Depth: 21 00:00:49 165mN
36.Nxf7 Bf5+ 37.Ke3 Rg2 38.Ne5 h4 39.d6 Rxg5 40.d7 Bxd7 41.Rxd7 Rh5 42.Rd8+ Kh7 43.Ra8 h3 44.Ra1 g6 45.Rg1 Rg5 46.Rh1 Rh5 47.Kf4 Kg7 48.Kg3 Kf6 49.Rxh3 Rxh3+ 50.Kxh3 Kf5 51.Kg3 Ke4 52.Nf3 g5 53.Kg4
+- (4.04) Depth: 22 00:01:10 232mN
36.Nxf7 Bf5+ 37.Ke3 Rg2 38.Ne5 h4 39.d6 Rxg5 40.d7 Bxd7 41.Rxd7 Rh5 42.Rd8+ Kh7 43.Ra8 h3 44.Ra1 g6 45.Rg1 Rh6 46.d5 Rh5 47.Kd4 Rh4+ 48.Kc5 Rh5 49.Nxg6 h2 50.Nf8+ Kh8 51.Rh1 Kg7 52.Ne6+ Kf6 53.Nf4 Rh4 54.Nd3 Ke7 55.Ne5 Rh6 56.Ng4
+- (4.12) Depth: 23 00:01:53 375mN
36.Nxf7 Bf5+ 37.Ke3 Rg2 38.Ne5 h4 39.Kf4 Rf2+ 40.Ke3 Rf1 41.d6 h3
+- (4.32) Depth: 24 00:03:15 639mN
36.Nxf7 Bf5+ 37.Ke3 Rg2 38.Ne5 h4 39.Kf4 Rf2+ 40.Ke3 Rg2 41.d6 Rxg5 42.d7 Bxd7 43.Rxd7 Kh7 44.Rc7 h3 45.Rc1 Rh5 46.Rh1 Kg8 47.Kf2 Rh4 48.Nf3 Rh6 49.Ke3 Kf7 50.Ng1 Re6+ 51.Kd2 Rf6 52.Nxh3 Ke6 53.Ke3 Kd6 54.Ng5
+- (4.32) Depth: 25 00:05:31 1076mN
36.g6 fxg6 37.Ra8+ Kh7 38.Nf7 Be2+ 39.Ke4 g5 40.Rh8+ Kg6 41.Ne5+ Kf6 42.Rf8+ Ke7 43.Rf7+ Ke8 44.d6 Bg4 45.Re7+ Kf8 46.Ra7 g6 47.Nxg4 Re2+ 48.Kd3 Re8 49.Ne5 Rd8 50.d7 g4 51.Nc6
+- (5.21) Depth: 25 00:07:46 1503mN
36.g6 fxg6 37.Ra8+ Kh7 38.Nf7 Rh3+ 39.Ke4 g5 40.Nxg5+ Kg6 41.Nxh3 Bxh3 42.Ke5 Kf7 43.Ra7+ Kf8 44.d6 Bg4 45.Kf4 Ke8 46.Rxg7 Bd7 47.Re7+ Kd8 48.Rh7 Bg4 49.Kg5 Ke8 50.Kf6 Kd8 51.Ke5 Kc8 52.d5 Kd8 53.Kf6 Ke8 54.Ke5
+- (5.45) Depth: 26 00:10:25 2007mN
"Tactics are the bricks and sticks that make up a game, but positional play is the architectural blueprint."
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Test postion: Monster Kasparov move in simul

Post by zullil »

Albert Silver wrote: [D]6k1/R4pp1/3N4/3P2Pp/3P2b1/3K4/7r/8 w - - 0 36

36.g6!!
Instead of 5:31 and depth 25 on your 2 x 3.6GHz system, Stockfish-1.6.2 finds g6 in 0:41 at depth 22 on my dual quad 2.26GHz Nehalem MacPro.

Interesting position.

Code: Select all

Searching: 6k1/R4pp1/3N4/3P2Pp/3P2b1/3K4/7r/8 w - -
infinite: 0 ponder: 0 time: 0 increment: 0 moves to go: 0
 2     +1.78   00:00      312 Rxf7 h4 
 3     +1.70   00:00      672 Rxf7 h4 Ke3 Re2+ Kf4 
 4     +1.70   00:00     1707 Rxf7 h4 Ke4 Re2+ Kf4 
 5     +1.45   00:00     3934 Rxf7 Be2+ Kc3 h4 g6 Rg2 
 5     +1.86   00:00     7306 Nxf7 Be2+ Kc3 Rh3+ Kb4 Rd3 d6 Rxd4+ Kc5 
 6     +1.86   00:00     8690 Nxf7 Be2+ Kc3 Rh3+ Kb4 Rd3 d6 Rxd4+ Kc5 
 7  >  +2.06   00:00    15806 Nxf7 Be2+ Kc3 Rh3+ Kb4 Rd3 d6 Rxd4+ Kc5 
 8     +2.14   00:00    85612 Nxf7 Bf5+ Ke3 Rh4 Nd6 Bc2 Rb7 Kh7 Rc7 
 9     +2.67   00:00   211669 Nxf7 Rh3+ Kc4 Rh1 Ne5 Rc1+ Kb4 Rd1 Kc3 Rc1+ Kd3 
                              Rc8 Nxg4 hxg4 d6 
10     +2.71   00:00   331375 Nxf7 Rh3+ Kc4 Rh1 Ne5 Rc1+ Kb4 Rb1+ Kc3 Rc1+ Kd3 
                              Rd1+ Ke3 Re1+ Kf4 Rf1+ Kg3 Kf8 d6 
11     +2.63   00:00   606831 Nxf7 Rh3+ Kc4 Rh1 Ne5 Rc1+ Kb4 Rb1+ Kc3 Rc1+ Kd2 
                              Rd1+ Ke3 Re1+ Kd3 Bf5+ Kd2 Re4 Kc3 h4 d6 Kh7 d7 
12  >  +2.83   00:00   942174 Nxf7 Rh3+ Kc4 Rh1 Ne5 Rc1+ Kd3 Rd1+ Ke3 Re1+ Kf2 
                              Re4 d6 Rxd4 d7 Kh7 g6+ Kh6 Nf7+ 
13     +2.79   00:01    4294k Nxf7 Bf5+ Ke3 Rh4 Ne5 Kh7 Rf7 Rh3+ Kf2 Bg6 d6 Rb3 
                              Ra7 Bf5 Ke2 
14     +3.56   00:01    6726k Nxf7 Bf5+ Ke3 Rh4 g6 Re4+ Kf3 Bxg6 d6 Re8 d7 Bxf7 
                              dxe8=Q+ Bxe8 Kf4 Kh7 d5 Kg6 d6 Kf6 d7 Bxd7 Rxd7 
                              g5+ Ke4 g4 Rd6+ Ke7 Ke5 h4 Rg6 Kf7 
15     +3.80   00:02   12024k Nxf7 Bf5+ Ke3 Rh4 g6 Re4+ Kf3 Bxg6 d6 Re8 d7 Bxf7 
                              dxe8=Q+ Bxe8 Kf4 Bc6 Ke5 h4 d5 Bb5 Kf4 g5+ Kg4 
                              Kf8 Kxg5 h3 Kf4 Ke8 
16     +3.56   00:03   25040k Nxf7 Rg2 d6 h4 Ne5 Bf5+ Ke3 Rxg5 d7 Bxd7 Nxd7 
                              Rg3+ Kf4 Rd3 Ra8+ Kh7 Nf8+ Kg8 Ne6+ Kf7 Ke4 Rg3 
                              d5 h3 Ra7+ Kf6 Kf4 h2 
17     +3.72   00:04   31730k Nxf7 Rg2 d6 h4 Ne5 Bf5+ Ke3 Rxg5 d7 Bxd7 Nxd7 
                              Rg3+ Kf4 Rd3 Ra8+ Kh7 Nf8+ Kg8 Ke4 Rb3 Ne6+ Kf7 
                              d5 h3 Ra1 Kf6 Rf1+ Ke7 Nxg7 Rb4+ Ke5 h2 Nf5+ Kd7 
18     +3.76   00:05   48090k Nxf7 Rg2 d6 h4 Ne5 Bf5+ Ke3 Rxg5 d7 Bxd7 Nxd7 Rg1 
                              Ne5 h3 Ra2 Re1+ Kf4 Rd1 Ke4 Rh1 d5 Re1+ Kd4 Rd1+ 
                              Kc5 Re1 Ra8+ Kh7 Nf3 Rc1+ Kd4 Kg6 d6 
19  >  +4.00   00:08   73922k Nxf7 Bf5+ Ke3 Rh4 g6 Re4+ Kf3 Bxg6 d6 Re8 d7 Bxf7 
                              dxe8=B Bxe8 Kf4 Bf7 Ke5 h4 d5 Kf8 d6 Ke8 Kf4 h3 
                              Kg3 
20     +3.80   00:14  126408k Nxf7 Bf5+ Ke3 Rg2 d6 h4 Ne5 Rxg5 d7 Bxd7 Nxd7 Rh5 
                              Ne5 h3 Ra1 Kf8 Rh1 Ke8 Kf2 Ke7 Kg3 Ke6 Rxh3 Rxh3+ 
                              Kxh3 Kd5 Nf3 g6 Kg4 
21     +4.00   00:23  219341k Nxf7 Bf5+ Ke3 Rg2 d6 h4 Ne5 Rxg5 d7 Bxd7 Nxd7 Rg1 
                              Ne5 h3 Ra2 g5 Kf3 Kg7 Rh2 Rf1+ Kg3 Kf6 Rxh3 Kf5 
                              Rh7 Ke4 Rd7 Rd1 
22     +4.04   00:30  282672k Nxf7 Bf5+ Ke3 Rg2 d6 h4 Ne5 Rxg5 d7 Bxd7 Rxd7 Rh5 
                              Ra7 h3 Ra1 Rh6 Rh1 Kf8 Kf2 Ke7 Kg3 Ke6 Rxh3 Rxh3+ 
                              Kxh3 Kd5 Nf3 g6 Kg4 Ke4 Kg5 
22  >  +4.85   00:41  382062k g6 fxg6 Ra8+ Kh7 Nf7 Be2+ Ke4 g5 Rh8+ Kg6 Ne5+ 
                              Kf6 Rf8+ Ke7 Rf7+ Ke8 d6 Bg4 Re7+ Kf8 Ra7 g6 Ra8+ 
                              Kg7 Nxg4 hxg4 d7 Re2+ Kd5 
23     +5.29   00:52  484684k g6 fxg6 Ra8+ Kh7 Nf7 Rh3+ Ke4 g5 Nxg5+ Kg6 Nxh3 
                              Bxh3 Ke5 Kf7 Ra7+ Kf8 d6 Bg4 Kf4 g6 Kg5 Ke8 Kxg6 
                              Kd8 Kg5 Bd1 Rh7 Ke8 Kf6 Bc2 Rc7 Bd3 Ke6 
24     +5.90   01:12  664057k g6 fxg6 Ra8+ Kh7 Nf7 Rh3+ Ke4 g5 Nxg5+ Kg6 Nxh3 
                              Bxh3 Ke5 Kf7 Ra7+ Kf8 d6 Ke8 Rxg7 Bg4 Rh7 Kd8 d5 
                              Ke8 d7+ Bxd7 Rxh5 Bg4 Rh7 Be2 d6 Bb5 Re7+ Kd8 Rb7 
                              Bd7 Rb8+ Bc8 
Nodes: 667560620
Nodes/second: 9156205
Best move: g6
Ponder move: fxg6
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Test postion: Monster Kasparov move in simul

Post by zullil »

Albert Silver wrote: [D]6k1/R4pp1/3N4/3P2Pp/3P2b1/3K4/7r/8 w - - 0 36

36.g6!!
Crafty-23.1 (8 threads, no tablebases) gets it in 3 minutes:

Code: Select all

Crafty v23.1 (8 cpus)

White(1): egtb=off
White(1): setboard 6k1/R4pp1/3N4/3P2Pp/3P2b1/3K4/7r/8 w - - 0 36
White(1): st 9999
search time set to 9999.00.
White(1): sd 24
search depth set to 24.
White(1): display stats
display statistics at end of each search.
White(1): go
              time limit 166:39 (+0.00) (166:39)
              depth   time  score   variation (1)
starting thread 1
starting thread 2
starting thread 3
starting thread 4
starting thread 5
starting thread 6
starting thread 7
                9->   0.03   2.25   1. Nxf7 h4 2. Ne5 Bf5+ 3. Ke3 Rg2 4.
                                    Kf4 Rf2+ 5. Nf3 Bc2 6. Ra8+ Kh7
               10     0.08   2.36   1. Nxf7 Be2+ 2. Kc3 Rh3+ 3. Kb4 Rd3
                                    4. Kc5 Rc3+ 5. Kd6 <HT>
               10->   0.09   2.36   1. Nxf7 Be2+ 2. Kc3 Rh3+ 3. Kb4 Rd3
                                    4. Kc5 Rc3+ 5. Kd6 <HT>
               11     0.17     +1   1. Nxf7!                          
               11     0.30   2.83   1. Nxf7 Bf5+ 2. Ke3 Rh3+ 3. Kf4 Bc2
                                    4. Ne5 Rh4+ 5. Ke3 Rh3+ 6. Kd2 Rh2+
                                    7. Kc3 Be4 8. d6 Rc2+ 9. Kb4
               11->   0.32   2.83   1. Nxf7 Bf5+ 2. Ke3 Rh3+ 3. Kf4 Bc2
                                    4. Ne5 Rh4+ 5. Ke3 Rh3+ 6. Kd2 Rh2+
                                    7. Kc3 Be4 8. d6 Rc2+ 9. Kb4
               12     0.38     -1   1. Nxf7?                          
               12     0.43   2.63   1. Nxf7 Bf5+ 2. Ke3 Rh4 3. Nd6 Bb1
                                    4. Rb7 Bc2 5. Rc7 Rh3+ 6. Kf4 Rh2 7.
                                    Ke5 Re2+ 8. Kf4
               12->   0.47   2.63   1. Nxf7 Bf5+ 2. Ke3 Rh4 3. Nd6 Bb1
                                    4. Rb7 Bc2 5. Rc7 Rh3+ 6. Kf4 Rh2 7.
                                    Ke5 Re2+ 8. Kf4 &#40;s=2&#41;
               13     0.67   2.89   1. Nxf7 Bf5+ 2. Ke3 Rh4 3. Ne5 Kh7
                                    4. d6 Re4+ 5. Kf3 Rxd4 6. d7 h4 7.
                                    Ra4 Bg4+ 8. Nxg4 Rxd7
               13->   0.85   2.89   1. Nxf7 Bf5+ 2. Ke3 Rh4 3. Ne5 Kh7
                                    4. d6 Re4+ 5. Kf3 Rxd4 6. d7 h4 7.
                                    Ra4 Bg4+ 8. Nxg4 Rxd7
               14     1.16   2.95   1. Nxf7 Bf5+ 2. Ke3 Rh4 3. Ne5 Kh7
                                    4. d6 Re4+ 5. Kf3 Rxd4 6. d7 h4 7.
                                    Ra4 Rxd7 8. Rxh4+ Kg8 9. Nxd7 Bxd7
               14->   1.38   2.95   1. Nxf7 Bf5+ 2. Ke3 Rh4 3. Ne5 Kh7
                                    4. d6 Re4+ 5. Kf3 Rxd4 6. d7 h4 7.
                                    Ra4 Rxd7 8. Rxh4+ Kg8 9. Nxd7 Bxd7
               15     2.53     +1   1. Nxf7!                          
               15     4.24   3.67   1. Nxf7 Bf5+ 2. Ke3 Rh4 3. d6 Re4+
                                    4. Kf3 Rxd4 5. g6 Rd3+ 6. Ke2 Be4 7.
                                    d7 Bxg6 8. d8=Q+ Rxd8 9. Nxd8 h4 10.
                                    Ne6
               15->   4.69   3.67   1. Nxf7 Bf5+ 2. Ke3 Rh4 3. d6 Re4+
                                    4. Kf3 Rxd4 5. g6 Rd3+ 6. Ke2 Be4 7.
                                    d7 Bxg6 8. d8=Q+ Rxd8 9. Nxd8 h4 10.
                                    Ne6
               16     5.89   3.42   1. Nxf7 Bf5+ 2. Ke3 h4 3. d6 Rg2 4.
                                    Kf4 Rf2+ 5. Ke5 Bc8 6. g6 Re2+ 7. Kf4
                                    Re6 8. d7 Bxd7 9. Rxd7 Rxg6 10. Ke5
               16->   8.41   3.42   1. Nxf7 Bf5+ 2. Ke3 h4 3. d6 Rg2 4.
                                    Kf4 Rf2+ 5. Ke5 Bc8 6. g6 Re2+ 7. Kf4
                                    Re6 8. d7 Bxd7 9. Rxd7 Rxg6 10. Ke5
                                    &#40;s=2&#41;
               17    10.72   3.40   1. Nxf7 Bf5+ 2. Ke3 h4 3. d6 Rg2 4.
                                    Kf4 Rf2+ 5. Ke5 Bc8 6. g6 Re2+ 7. Kf4
                                    Re6 8. d7 Bxd7 9. Rxd7 Rxg6 10. Ne5
                                    Rf6+ 11. Ke4
               17->  17.87   3.40   1. Nxf7 Bf5+ 2. Ke3 h4 3. d6 Rg2 4.
                                    Kf4 Rf2+ 5. Ke5 Bc8 6. g6 Re2+ 7. Kf4
                                    Re6 8. d7 Bxd7 9. Rxd7 Rxg6 10. Ne5
                                    Rf6+ 11. Ke4 &#40;s=4&#41;
               18    24.08   3.21   1. Nxf7 Bf5+ 2. Ke3 h4 3. d6 Rg2 4.
                                    d7 Bxd7 5. Rxd7 h3 6. Ne5 g6 7. Kf3
                                    Rxg5 8. Ng4 Rxg4 9. Kxg4 h2 10. Rd8+
                                    Kf7 &#40;s=3&#41;
               18->  50.42   3.21   1. Nxf7 Bf5+ 2. Ke3 h4 3. d6 Rg2 4.
                                    d7 Bxd7 5. Rxd7 h3 6. Ne5 g6 7. Kf3
                                    Rxg5 8. Ng4 Rxg4 9. Kxg4 h2 10. Rd8+
                                    Kf7 &#40;s=5&#41;
               19     1&#58;34   3.20   1. Nxf7 Rg2 2. d6 Bf5+ 3. Ke3 h4 4.
                                    Ne5 Rxg5 5. Kf4 Rh5 6. d7 Bxd7 7. Nxd7
                                    h3 8. Ra8+ Kf7 9. Ne5+ Ke7 10. Ra7+
                                    Kf6 <HT> &#40;s=4&#41;
               19     3&#58;04   3.44   1. g6 fxg6 2. Ra8+ Kh7 3. Nf7 Be2+
                                    4. Ke4 g5 5. Rh8+ Kg6 6. Ne5+ Kf6 7.
                                    Rf8+ Ke7 8. Rf7+ Ke8 9. d6 Bg4 10.
                                    Rxg7 Kf8 11. d7 Bxd7 12. Rxd7 Re2+
                                    13. Kf3 Rd2 14. Rf7+ Ke8
               19->   3&#58;04   3.44   1. g6 fxg6 2. Ra8+ Kh7 3. Nf7 Be2+
                                    4. Ke4 g5 5. Rh8+ Kg6 6. Ne5+ Kf6 7.
                                    Rf8+ Ke7 8. Rf7+ Ke8 9. d6 Bg4 10.
                                    Rxg7 Kf8 11. d7 Bxd7 12. Rxd7 Re2+
                                    13. Kf3 Rd2 14. Rf7+ Ke8 &#40;s=4&#41;
               20     3&#58;29   3.53   1. g6 fxg6 2. Ra8+ Kh7 3. Nf7 Be2+
                                    4. Ke4 g5 5. Rh8+ Kg6 6. Ne5+ Kf6 7.
                                    Rf8+ Ke7 8. Rf7+ Ke8 9. d6 Bg4 10.
                                    Rxg7 Kf8 11. d7 Bxd7 12. Rxd7 Re2+
                                    13. Kd3 Rb2 14. Rf7+ Ke8 &#40;s=3&#41;
               20->   4&#58;44   3.53   1. g6 fxg6 2. Ra8+ Kh7 3. Nf7 Be2+
                                    4. Ke4 g5 5. Rh8+ Kg6 6. Ne5+ Kf6 7.
                                    Rf8+ Ke7 8. Rf7+ Ke8 9. d6 Bg4 10.
                                    Rxg7 Kf8 11. d7 Bxd7 12. Rxd7 Re2+
                                    13. Kd3 Rb2 14. Rf7+ Ke8 &#40;s=2&#41;
               21     6&#58;03     +1   1. g6!                            
               21     7&#58;01   4.22   1. g6 fxg6 2. Ra8+ Kh7 3. Nf7 Rh3+
                                    4. Ke4 g5 5. Nxg5+ Kg6 6. Nxh3 Bxh3
                                    7. Ke5 Bg4 8. Ra6+ Kf7 9. Ra7+ Kf8
                                    10. d6 h4 11. Kf4 Be6 12. Rc7 g6 13.
                                    d7 Ke7
               21->   9&#58;51   4.22   1. g6 fxg6 2. Ra8+ Kh7 3. Nf7 Rh3+
                                    4. Ke4 g5 5. Nxg5+ Kg6 6. Nxh3 Bxh3
                                    7. Ke5 Bg4 8. Ra6+ Kf7 9. Ra7+ Kf8
                                    10. d6 h4 11. Kf4 Be6 12. Rc7 g6 13.
                                    d7 Ke7 &#40;s=2&#41;
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Jouni
Posts: 3286
Joined: Wed Mar 08, 2006 8:15 pm

Re: Test postion: Monster Kasparov move in simul

Post by Jouni »

King of tactics in Pentium 2400:

Analysis by bright-0.5c:

1.g6 fxg6 2.Ra8+ Kh7 3.Nf7 Be2+ 4.Ke4 g5 5.Rh8+ Kg6 6.Ne5+ Kf6 7.Rf8+ Ke7 8.Rf7+ Ke8 9.d6 Bg4 10.Rxg7 Kf8 11.d7 Bxd7 12.Rxd7 Rd2 13.Rh7
+- (2.38) Depth: 15/47 00:00:35 25317kN
1.g6 Kf8 2.Rxf7+ Kg8 3.Re7 Rf2 4.Nf7 Kf8 5.d6 Rg2 6.d7 Bxd7 7.Rxd7 Rxg6 8.Ne5 Rg3+ 9.Ke4 g5 10.Rf7+ Ke8 11.d5
+- (2.76) Depth: 16/49 00:01:17 54930kN
1.g6 Kf8 2.Rxf7+ Kg8 3.Re7 Rf2 4.Nf7 Kf8 5.d6 Rf6 6.d7 Bxd7 7.Rxd7 Rxg6 8.Ne5 Re6 9.Rd8+ Re8 10.Ng6+ Kf7 11.Rxe8 Kxe8
+- (2.86) Depth: 17/49 00:01:39 71001kN

Jouni
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Dr.Wael Deeb
Posts: 9773
Joined: Wed Mar 08, 2006 8:44 pm
Location: Amman,Jordan

Re: Test postion: Monster Kasparov move in simul

Post by Dr.Wael Deeb »

Thanks Albert,a very nice test position and an amazing move by the mighty Kasparov :D
Dr.D
_No one can hit as hard as life.But it ain’t about how hard you can hit.It’s about how hard you can get hit and keep moving forward.How much you can take and keep moving forward….
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M ANSARI
Posts: 3707
Joined: Thu Mar 16, 2006 7:10 pm

Re: Test postion: Monster Kasparov move in simul

Post by M ANSARI »

Yes, I actually saw that also on CB today and was playing around with it on my computer. I think the position is easily winning with Nxf7, but Kasparov gets a lot of credit for seeing that g6 is much stronger, especially considering this was a simul.

Rybka 3 8 cores has no problems with the position

59: New game
6k1/R4pp1/3N4/3P2Pp/3P2b1/3K4/7r/8 w - - 0 1

Analysis by Rybka 3:

1.Nxf7 Rh3+ 2.Ke4
+/- (1.11) Depth: 6 00:00:00 3kN
1.Nxf7 Bf5+ 2.Ke3 Rh4 3.Re7
+/- (1.14) Depth: 7 00:00:00 6kN
1.Nxf7
+/- (1.34 !) Depth: 8 00:00:00 12kN
1.Nxf7 Bf5+ 2.Ke3 Rh4 3.Re7 Rh3+ 4.Kf4
+- (1.51) Depth: 8 00:00:00 25kN
1.Nxf7 Rh3+ 2.Ke4
+/- (1.36) Depth: 9 00:00:00 51kN
1.Nxf7
+- (1.56 !) Depth: 10 00:00:00 53kN
1.Nxf7
+- (1.76 !) Depth: 10 00:00:00 114kN
1.Nxf7 Rg2 2.d6 Bh3
+- (1.72) Depth: 10 00:00:00 255kN
1.Nxf7 Rg2 2.d6 Bh3 3.Ne5
+- (1.72) Depth: 11 00:00:00 268kN
1.Nxf7 Rg2 2.d6 Bh3 3.Ne5
+- (1.72) Depth: 12 00:00:00 322kN
1.Nxf7 Rg2 2.d6 Bh3 3.Ne5 Rxg5 4.d7 Bxd7 5.Nxd7 h4 6.Ke3 Rg3+ 7.Kf4 Rd3 8.Ke4 Rg3 9.Kf4 Rd3 10.Ke4 Rg3 11.Kf4 Rd3 12.Ke4 Rg3 13.Kf4 Rd3 14.Ke4 Rg3 15.Kf4 Rd3 16.Ke4
+- (1.72) Depth: 13 00:00:01 437kN
1.Nxf7 Rg2 2.d6 Bh3 3.Ne5 Rxg5 4.d7 Bxd7 5.Nxd7 h4 6.Ke3 Rh5 7.Ne5 h3 8.Ra1 g5 9.d5
+- (1.71) Depth: 14 00:00:01 651kN
1.Nxf7 Rg2 2.d6 h4 3.Ne5 Bf5+ 4.Ke3 Rxg5 5.d7 Bxd7[] 6.Nxd7[]
+- (1.86) Depth: 15 00:00:03 1309kN, tb=1
1.g6
+- (1.91 !) Depth: 15 00:00:03 1497kN, tb=1
1.g6
+- (2.11 !) Depth: 15 00:00:04 1581kN, tb=1
1.g6
+- (2.51 !) Depth: 15 00:00:05 1946kN, tb=3
1.g6 Kf8 2.Rxf7+[]
+- (2.68) Depth: 15 00:00:07 2686kN, tb=8
1.g6
+- (2.88 !) Depth: 16 00:00:07 2763kN, tb=8
1.g6
+- (3.08 !) Depth: 16 00:00:07 2853kN, tb=8
1.g6
+- (3.48 !) Depth: 16 00:00:08 3168kN, tb=10
1.g6 fxg6 2.Ra8+[] Kh7 3.Nf7[] Be2+[]
+- (3.88) Depth: 16 00:00:10 3926kN, tb=22
1.g6 fxg6 2.Ra8+[] Kh7 3.Nf7[] Rh3+[] 4.Ke4 g5 5.Nxg5+ Kg6 6.Nxh3[] Bxh3 7.Ke5[] Kf7 8.Ra7+[] Kf8 9.d6[] Bg4 10.Kf4 g5+ 11.Kxg5 Ke8[] 12.Re7+ Kd8 13.Kf4 Bd7 14.Ke5 Bc6 15.Ke6 Bf3
+- (3.89) Depth: 17 00:00:13 4954kN, tb=26
1.g6 Be2+ 2.Ke4[] fxg6 3.Ra8+ Kh7[] 4.Nf7
+- (4.09 !) Depth: 18 00:00:16 5829kN, tb=44
1.g6 Be2+ 2.Ke4[] fxg6 3.Ra8+[] Kh7[] 4.Nf7[]
+- (4.89 !) Depth: 18 00:00:23 8203kN, tb=96

(, Microsoft 25.01.2010)
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Martin Thoresen
Posts: 1833
Joined: Thu Jun 22, 2006 12:07 am

Re: Test postion: Monster Kasparov move in simul

Post by Martin Thoresen »

[d]6k1/R4pp1/3N4/3P2Pp/3P2b1/3K4/7r/8 w - -[/d]

Engine: Stockfish 1.6.2 JA 64-bit 4CPU (1024 MB)
by Tord Romstad, Marco Costalba, Joona Kii

13.00 0:00 +3.59++ 1.Nxf7 Rh3+ 2.Kc4 Rh1 3.d6 Be6+
4.Kd3 Rd1+ 5.Ke3 Kh7 6.d7 (4.259.918) 5702

14.00 0:02 +3.39 1.Nxf7 Rb2 2.d6 h4 3.d7 Bxd7 4.Rxd7 Rg2
5.Ne5 Rxg5 6.Rc7 h3 7.Rc1 Kf8 8.Ke3 Ke7
9.Kf4 Rg2 10.Ke4 g5 11.Rc7+ Kf6
12.Rc6+ Ke7 (18.766.790) 8307

15.01 0:02 +3.79 1.Nxf7 Bf5+ 2.Ke3 Rh4 3.d6 Re4+
4.Kf3 Rxd4 5.g6 Rd3+ 6.Ke2 Rc3 7.d7 Bxd7
8.Rxd7 Rc8 9.Kf3 Rb8 10.Kg3 Kf8
11.Ne5 Rb5 12.Kf4 (22.086.716) 8511

16.01 0:03 +3.63 1.Nxf7 Bf5+ 2.Ke3 Rg2 3.d6 h4 4.Ne5 Rxg5
5.d7 Bxd7 6.Nxd7 Rg3+ 7.Kf4 Rg2
8.Ra8+ Kh7 9.d5 h3 10.Nf8+ Kh6
11.Ne6 g5+ 12.Kf5 Rf2+ 13.Kg4 Rd2 (27.959.758) 8603

17.01 0:04 +3.83 1.Nxf7 Bf5+ 2.Ke3 Rg2 3.d6 h4 4.Ne5 Rxg5
5.d7 Bxd7 6.Nxd7 Rg3+ 7.Kf4 Rg2
8.Ne5 h3 9.Ra1 g5+ 10.Kf5 h2 11.Rh1 Kf8
12.Ng4 Rd2 13.Ke4 Rg2 14.Nxh2 (37.580.434) 8928

18.01 0:05 +3.87 1.Nxf7 Bf5+ 2.Ke3 Rg2 3.d6 h4 4.Ne5 Rxg5
5.d7 Bxd7 6.Nxd7 h3 7.Ra8+ Kf7 8.Rh8 Rg3+
9.Kf4 Rb3 10.Kg4 Rb4 11.Ne5+ Kf6
12.Nf3 Ke7 13.Rxh3 Ke6 (55.814.462) 9333

19.01 0:07 +3.71 1.Nxf7 Bf5+ 2.Ke3 Rg2 3.d6 h4 4.Ne5 Rxg5
5.d7 Bxd7 6.Nxd7 Kf7 7.Ne5+ Kf6
8.Ke4 h3 9.Rf7+ Ke6 10.d5+ Kd6
11.Rd7+ Kc5 12.Rc7+ Kd6 13.Rc6+ Ke7
14.Re6+ (71.067.124) 9466

20.01 0:10 +3.87 1.Nxf7 Bf5+ 2.Ke3 Rg2 3.d6 h4 4.Ne5 Rxg5
5.d7 Bxd7 6.Nxd7 Rh5 7.Ne5 h3 8.Ra1 Kf8
9.Kf4 Ke7 10.Kg4 Rh6 11.Rh1 h2
12.Kg3 Ke6 13.Rxh2 Rxh2 14.Kxh2 (97.974.669) 9698

21.01 0:21 +3.71 1.Nxf7 Rg2 2.d6 h4 3.Ne5 Bf5+ 4.Ke3 Rxg5
5.d7 Bxd7 6.Nxd7 Rh5 7.Ne5 h3 8.Ra1 Kf8
9.Kf4 Ke7 10.Kg4 Rh6 11.Rh1 Rd6
12.Kg3 Ke6 13.Nf3 Kd5 14.Rxh3 (212.523.651) 10051

22.01 0:31 +3.91 1.Nxf7 Rg2 2.d6 h4 3.Ke4 Bh3 4.Ne5 Rxg5
5.d7 Bxd7 6.Rxd7 Rh5 7.Rc7 h3 8.Rc8+ Kh7
9.Rc1 Rh4+ 10.Ke3 Rh6 11.d5 Kg8
12.Rd1 h2 13.Rh1 Kf8 14.Nf3 (320.789.059) 10100

23.01 0:41 +4.00 1.Nxf7 Rg2 2.d6 h4 3.Ke4 Bh3 4.Ne5 Rxg5
5.d7 Bxd7 6.Rxd7 Rh5 7.Rc7 h3 8.Rc8+ Kh7
9.Rc1 Rh4+ 10.Ke3 Rh6 11.Rh1 Kg8
12.Kf2 Rh4 13.Nf3 Rh6 14.Ng5 (426.073.389) 10246

23.07 0:52 +4.48++ 1.g6 Rh3+ 2.Ke4 Bf3+ 3.Ke5 f6+ 4.Ke6 Bg4+
5.Nf5 Bxf5+ 6.Kxf5 Kf8 7.d6 Re3
8.Rf7+ Ke8 9.Rxg7 h4 10.Kxf6 Rf3+
11.Ke5 (540.226.092) 10196

n/s: 10.196.694 nodes: 578.152.587

52 seconds on my Quad.
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User avatar
meschle
Posts: 200
Joined: Tue Apr 01, 2008 11:53 pm

Re: Test postion: Monster Kasparov move in simul

Post by meschle »

Rybka winfinder, bright and spark all find g6 in under 2 secs on my quad
Regards Mark

Quad Q6600 3.0 Ghz, Vista 64bit, 4gb Ram
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User avatar
Mike S.
Posts: 1480
Joined: Thu Mar 09, 2006 5:33 am

Re: Test postion: Monster Kasparov move in simul

Post by Mike S. »

Amazing! And it even works after black alternatives at the 38th move.

Kasparov's capabilities are astonishing. I noticed it first in 1985, when he was giving a blindfold simul exhibition with 10 games, even with clock handicap, 10*40 moves in 90 minutes. In other words, Kasparov had to play (up to) 400 moves in 90 minutes without sight of the board. He scored 9:1.

One opponent was a computer, a 16 bit Mephisto.

[D]2r3k1/1qr1b1p1/p2pPn2/nppPp3/8/1PP1B2P/P1BQ1P2/5KRR w - - 0 30

Kasparov had already sacrificed a knight on e6 (which the computer should have declined, but that was 25 years ago). And now, 30.Rxg7+!. This is easy for comps nowadays, but I wanted to show what Kasparov could do even during a blindfold simul with clock handicap. Hence it is clear that he wouldn't consider comps to be a threat for him yet, at that time and for some more years. In the same year, he also played a simul against 32 chess computers and won all games.
Regards, Mike
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michiguel
Posts: 6401
Joined: Thu Mar 09, 2006 8:30 pm
Location: Chicago, Illinois, USA

Re: Test postion: Monster Kasparov move in simul

Post by michiguel »

Jouni wrote:King of tactics in Pentium 2400:

Analysis by bright-0.5c:

1.g6 fxg6 2.Ra8+ Kh7 3.Nf7 Be2+ 4.Ke4 g5 5.Rh8+ Kg6 6.Ne5+ Kf6 7.Rf8+ Ke7 8.Rf7+ Ke8 9.d6 Bg4 10.Rxg7 Kf8 11.d7 Bxd7 12.Rxd7 Rd2 13.Rh7
+- (2.38) Depth: 15/47 00:00:35 25317kN
1.g6 Kf8 2.Rxf7+ Kg8 3.Re7 Rf2 4.Nf7 Kf8 5.d6 Rg2 6.d7 Bxd7 7.Rxd7 Rxg6 8.Ne5 Rg3+ 9.Ke4 g5 10.Rf7+ Ke8 11.d5
+- (2.76) Depth: 16/49 00:01:17 54930kN
1.g6 Kf8 2.Rxf7+ Kg8 3.Re7 Rf2 4.Nf7 Kf8 5.d6 Rf6 6.d7 Bxd7 7.Rxd7 Rxg6 8.Ne5 Re6 9.Rd8+ Re8 10.Ng6+ Kf7 11.Rxe8 Kxe8
+- (2.86) Depth: 17/49 00:01:39 71001kN

Jouni
Gaviota v0.74.41 <cough>, gets it in 28 seconds on my crappy pentium 32 bits 1.8 Ghz of my office. Only one core, 9 plies, with a beautiful smile, which becomes a laughter at 52.7 seconds.

Miguel

Code: Select all

        11   1       0.0    +1.15  19.Nxf7 Bf5+ 20.Ke3
    233875   6&#58;      0.7    +1.03  19.Nxf7 Rh3+ 20.Ke4 Bf3+ 21.Ke5 Rh2
                                   22.d6 Re2+ 23.Kf4 Bd5
    465180   7       1.4    +1.26  19.Nxf7 Rh3+ 20.Ke4 Bf3+ 21.Ke5 Rh4
                                   22.d6 Re4+ 23.Kf5 Rxd4 24.Ne5 Bg4+
                                   25.Nxg4 hxg4
    510793   7&#58;      1.5    +1.26  19.Nxf7 Rh3+ 20.Ke4 Bf3+ 21.Ke5 Rh4
                                   22.d6 Re4+ 23.Kf5 Rxd4 24.Ne5 Bg4+
                                   25.Nxg4 hxg4
   1312276   8       3.8    +1.40  19.Nxf7 Rh3+ 20.Ke4 Bf3+ 21.Ke5 Rh4
                                   22.g6 Re4+ 23.Kd6 Re8 24.Ne5 Be4
   1450319   8&#58;      4.2    +1.40  19.Nxf7 Rh3+ 20.Ke4 Bf3+ 21.Ke5 Rh4
                                   22.g6 Re4+ 23.Kd6 Re8 24.Ne5 Be4
   4155717   9      12.0      &#58;-(  19.Nxf7
   6700704   9      19.8    +0.99  19.Ra8+ Kh7 20.Nxf7 Rh3+ 21.Kd2 Bf5
                                   22.Ne5 Be4 23.Ra5 Rg3 24.d6 Rxg5
   9479451   9      28.2      &#58;-)  19.g6
  17359284   9      49.9    +1.99  19.g6 Kf8 20.Rxf7+ Kg8 21.Nf5 Bxf5+
                                   22.Rxf5 Rg2 23.d6 Rxg6 24.Rd5 Rg3+
                                   25.Kc4 Rg1 26.Rxh5 Rd1
  17469174   9&#58;     50.2    +1.99  19.g6 Kf8 20.Rxf7+ Kg8 21.Nf5 Bxf5+
                                   22.Rxf5 Rg2 23.d6 Rxg6 24.Rd5 Rg3+
                                   25.Kc4 Rg1 26.Rxh5 Rd1
  18301134  10      52.7      &#58;-)  19.g6
  27009003  10      77.1    +2.86  19.g6 Rh3+ 20.Ke4 Kf8 21.Ra8+ Ke7
                                   22.gxf7 Rf3 23.Re8+ Kxd6 24.f8=Q+ Rxf8
                                   25.Rxf8 Be2 26.Rd8+ Ke7 27.Rh8
  29600768  10&#58;     85.1    +2.86  19.g6 Rh3+ 20.Ke4 Kf8 21.Ra8+ Ke7
                                   22.gxf7 Rf3 23.Re8+ Kxd6 24.f8=Q+ Rxf8
                                   25.Rxf8 Be2 26.Rd8+ Ke7 27.Rh8
  45240084  11     131.4    +3.08  19.g6 Kf8 20.Rxf7+ Kg8 21.Nf5 Bxf5+
                                   22.Rxf5 Rb2 23.d6 Rb8 24.Rxh5 Rd8
                                   25.Re5 Kf8 26.Re6 Kg8
  50249540  11&#58;    146.1    +3.08  19.g6 Kf8 20.Rxf7+ Kg8 21.Nf5 Bxf5+
                                   22.Rxf5 Rb2 23.d6 Rb8 24.Rxh5 Rd8
                                   25.Re5 Kf8 26.Re6 Kg8
  59427971  12     174.2    +3.09  19.g6 Kf8 20.Rxf7+ Kg8 21.Nf5 Bxf5+
                                   22.Rxf5 Rb2 23.d6 Rb8 24.Rxh5 Rd8
                                   25.Re5 Kf8 26.Re6 Rd7 27.d5
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