After 80 games Stockfish leads 29-17 with 34 draws. Stockfish won a game pair and there were 4 drawn pairs, 3 of which had two white wins. The gap is +12 with 10 game pairs left.
Games 71-72 started with a sideline in the KID orthodox variation. All pieces and pawns were on the board and the center was blocked. In game 71 there was a series of exchanges after the start, Leela captured a pawn and exposed the black king. Stockfish pushed a pawn to f3 trapping the white king in the corner. Evals came down, the engines opened the b file and shuffled for a while, then exchanged a pair of rooks and reduced to a QRN vs QRB position. After a long shuffle Stockfish traded its queen for a rook and bishop, Leela's eval was low enough and the game was adjudicated.
In game 72 there were no exchanges after the start, the engines played behind their pawn lines and evals stayed above 1. After move 34 evals started to increase, the engines exchanged minor pieces on move 47. On move 57 Stockfish exchanged the first pawns and opened the h file, it captured a pawn and the exchanges continued until only RBN vs RNN were left.
The white rook moved to the 7th rank behind the black pawns, Leela tried to protect its pawns. Stockfish created a passer on the king side and the white king moved forward. Leela lost a knight for the passer, Stockfish captured a pawn and reduced to a knight vs pawns ending. Stockfish queened a passer and mated. Stockfish wins the game pair, it leads 26-14.
Games 73-74 started with a sideline in the Slav defense. In game 73 the engines exchanged minor pieces on the king side and opened the b file. Evals stayed under 1, the engines exchanged all rooks and both engines had a passer on the queen side. After move 33 Leela's eval started to increase, it pushed pawns on the king side and blocked it. The engines reduced to a QBN vs QBN position, Leela captured a pawn and created a second passer.
Stockfish gave a pawn and attacked with its queen, capturing back a pawn. Stockfish didn't want to exchange queens, it lost a knight instead. Leela attacked the black king and Stockfish lost material, followed by mate.
In game 74 the engines blocked the center and the queen side, there was one minor piece exchange. Stockfish created a passer in the center through a pawn exchange, Leela blocked with a knight. The engines mostly shuffled for a while, Stockfish's eval increased first and then Leela's eval increased as well. After move 53 Stockfish opened the king side and sacrificed a rook to attack the black king.
All white pieces participated in the attack, Stockfish gave the second rook for a knight while Leela pushed the passer forward in a weak counter. Stockfish captured the passer and then won back material, in a series of exchanges the engines reduced to an opposite color bishops ending with white a pawn up.
Stockfish captured the c pawn and created a second passer, then used the bishop and king to drive the black king away and captured the d pawn as well. Leela couldn't avoid a queening and mate. There were two white wins in this game, Stockfish leads 27-15.
Games 75-76 started with a rare sideline in the Indian defense, knights variation. In game 75 evals were low after the start, the engines exchanged a few minor pieces, then a pawn exchange gave Leela a passer on the queen side. Evals jumped when Leela managed to push the passer safely, protected by a knight. Stockfish gave a rook for a knight to capture the passer.
Leela moved a rook forward and captured two pawns. Stockfish decided not take the rook for a bishop, it tried to keep its defending pieces and to keep the king side closed. Leela pushed the g pawn and opened the g file while Stockfish created connected passers. The black king was in danger, Leela created a passer in the center and pushed it forward as well. After queens were exchanged Stockfish lost more material and was mated.
In game 76 the engines repeated the reverse game for 13 plys up to transpositions, after that there were pawn and minor piece exchanges, the engines opened the b file. Leela blocked the file with a bishop, Stockfish exchanged bishops and captured a pawn, creating a passer in a QRR vs QRR position.
Stockfish gave the pawn back on the king side and weakened the black pawn structure there. The engines exchanged all rooks, Stockfish regained the pawn while the black king tried to protect the pawns around it. Leela captured the white passer and equalized material but evals were high.
The black queen was far from the king side, Stockfish used checks to capture a pawn and create a passer in the center. Stockfish captured a second pawn and created a passer on the king side, by then the black queen could give checks on an exposed white king but Leela couldn't avoid a queening and mate. There were two white wins in this game, Stockfish leads 28-16.
Games 77-78 started with a rare sideline in the Sicilian opening. In game 77 the engines blocked the center, Stockfish pushed pawns on the queen side and Leela blocked it too. Evals came down, in a series of exchanges Leela traded a rook and a pawn for two minor pieces, it created a passer in the center and the h file opened. Stockfish castled its king and avoided exchanges on the king side, on move 39 the queens were exchanged and the engines started to shuffle. Evals were low but there were too many pieces for the draw rule, the game ended in a 50 move draw. In game 78 the engines blocked the center and queen side as before. Stockfish gave a knight for a pawn and created a passer in the center, its eval jumped. Then Leela gave a bishop for a pawn, Stockfish still had the passer but evals decreased. Leela castled long and its eval remained calm, it captured the white passer while the white queen moved forward on the king side and captured two pawns there. In a series of exchanges Leela gave a knight and the game reached a QBN vs QB position, the white king was exposed and Leela started a series of checks. Stockfish's eval jumped up and down, Leela captured the white bishop and let Stockfish take control. Stockfish captured a pawn and created a passer, it gave a series of checks until it was Leela's turn again. Leela captured a pawn and created a passer as well. Eventually Stockfish's eval came down as well, the game was adjudicated on move 121.
Games 79-80 started with a rare sideline in the Benoni defense, the center was blocked and all pieces and pawns were on the board. In game 79 Stockfish pushed pawns on the king side and Leela pushed pawns on the queen side. The engines opened the b file, a pawn exchange on the king side exposed the black king. Evals slowly increased, Leela moved a rook forward and took control of the b file. Stockfish created a passer in the center, on move 36 the engines exchanged a pair of bishops, the first pieces to be exchanged.
After some shuffling the engines opened the g file and exchanged a pair of rooks, closing the g file and opening the h file. The white queen threatened the king side on the long diagonal. Stockfish traded its queen and a pawn for a rook and a knight, creating connected white passers on the king side.
The white queen moved forward and the game reached a QN vs RNN position. Leela blocked the black passer, Stockfish tried to force the blocking knight to move but was not strong enough. Leela captured all the black pawns on the queen side, when the black rook moved forward Leela moved its knight forward and attacked. The black king was left with a weak defense, the black passer was not fast enough and Leela mated.
In game 80 the engines blocked the queen side, Leela pushed the h pawn and opened the h file. Evals increased steadily, Stockfish moved a rook to the h file and there were a few more pawn exchanges. Stockfish created a passer on the king side and Leela created one in the center, on move 32 the first minor pieces were exchanged, Stockfish doubled rooks on the h file and the engines exchanged a pair of rooks.
Stockfish moved a knight forward on the king side, Leela exchanged it with a bishop and both passers were captured. Stockfish attacked with 3 pieces, it tried to find the right configuration and on move 56 it doubled queen and rook on the h file.
Leela chose to counter with an attack on the white king. The black queen moved forward and gave checks until Stockfish blocked with the knight. Stockfish resumed its attack, Leela lost material and was mated. There were two white wins in this game, Stockfish leads 29-17.
No comments:
Post a Comment