Šah Carlsen vs Karjakin

Eh ja, davno so že minili časi, ko je bil šah zanimiv za povprečnega človeka in smo vsi spremljali dvoboje, kot je bil recimo Fischer Spaski ali Karpov Kasparov.

Meni je bilo pa všeč, kako je Ivo Bajec pri športu poročal o dvobojih.

5 potez in smo že izven knjig/baz

PV: 53. Qa6 Qd4 54. Qxa2 Ng4+ 55. Kh3 Qg1 56. Qb2+ Kg6 57. Bf3 Nf2+ 58. Qxf2 Qxf2 59. Bg2 Kf6 60. e5+ Kxe5 61. Bc6 Qg1 62. Bb7 Kd4 63. Bg2 Ke3 64. Ba8 Kf2 65. Bf3 Qxg3#
11,966,018,079 nodes, 38,027,801 nodes/sec, depth 60 ply (47 selective), 233,731,643 Syzygy hits

še tehnikalije
Chess analysis by Stockfish 201116 64 BMI2
main analysis: 20x2.3GHz Haswell-EP,
multi-PV search: 18x2.2GHz Broadwell-EP
7-man Lomonosov tablebase lookup by ChessOK

Lomonosov supercomputer is the most powerful HPC system in Eastern Europe, delivering 1,7 PFlops of peak and 872.50 TFlops of sustained performance under Linpack. Lomonosov occupies the 18th position on the TOP500 list of the world's most powerful supercomputers (as of November 2011). "Lomonosov" is divided into 2 parts by nodes architecture: 5 104 x86 nodes and 1 065 GPU nodes. In general, "Lomonosov" uses 6 types of compute nodes and incorporates processors of different architecture. The resulting hybrid installation has enough flexibility for enabling optimum performance for a wide range of applications.

About 7-man endings

7-man tablebases were calculated in 2012 on Computer Science department of Moscow State University. Calculations were done on supercomputer named Lomonosov. So they were named Lomonosov tablebases. Generation of tablebases is an important step as in chess theory and practice so in improving of retrograde analysis algorithm.

The tablebases contain the exact evaluations (draw or moves to mate) for all positions with no more than 7 pieces on the board. The total number of positions in the tables - more than 500 trillions (500 000 billions). The real number of similar positions is several times more, but part of them can be obtained from others by mirroring and rotating of the board, so there is no need to keep them on disks.

Imagine how many hard drives are essential for providing the evaluation and the best move for any position. 1000 disks and Petabytes of data on them? Fortunately there is a possibility to compress data and there is need only in keeping 100 TB of data. Compression also was not a simple task compared by complexity with calculating of tables.

Even with high level of compression the size of tablebases is tremendous and is not available for storing them on typical desktop computer. So this site was created for providing online access to server with tablebases.

omg! O:
pa se mi je zdelo, da ne smem zaspati pred koncem. ):

30.nov Carlsen bo na rojsni dan moral igrati
1. 4x rapid(25min+10sek/potezo) začne Carlsen z črnimi, če ni odloceno->
2. max 5 mini blitz(5min+3sek) dvobojev ->
3. armageddon, žreb določi tekmovalca, ki se odloci za belega 5min in mora zmagati, ali za črnega, 4min in mu je dovolj remi