[Comment "auto-generated from http://www.jesseo.com/chesspublishing/pgn.php?pgndata=%0A[Event%20%26quot;WS/MN/083%26quot;]%0A[Site%20%26quot;ICCF%26quot;]%0A[Date%20%26quot;2012.5.2%26quot;]%0A[Round%20%26quot;-%26quot;]%0A[White%20%26quot;Morrow,%20Wolff%26quot;]%0A[Black%20%26quot;Grego,%20Lu%EF%BF%BDs%20Jos%EF%BF%BD%20Gonzaga%26quot;]%0A[Result%20%26quot;1-0%26quot;]%0A[WhiteElo%20%26quot;2301%26quot;]%0A[BlackElo%20%26quot;2316%26quot;]%0A%0A1.e4%20c5%202.Nf3%20d6%203.d4%20cxd4%204.Nxd4%20Nf6%205.Nc3%20g6%206.Be3%20Bg7%207.f3%20O-O%208.Qd2%20Nc6%209.Bc4%20Bd7%2010.O-O-O%20Rc8%2011.Bb3%20Ne5%2012.Kb1%20a6%20%26%23123;%20This%20was%20the%20pet%20line%20my%20opponent%20always%20played%20for%20in%20his%20previous%20games.%20I%20knew%20this,%20and%20prepared%20the%20-gem-%20refutation%20for%20him%20on%20move%2015.%20%26%23125;%2013.h4%20h5%2014.Bh6%20Nc4%2015.Qc1!%20%26%23123;%20This%20is%20the%20new%20move%20that%20kills%20the%20entire%2012...a6%20line.%20It%20was%20played%20first%20in%20Salvador%20Marques%20-%20Alberto%20da%20Silva%20January%202011,%20and%20later%20in%20Walter%20-%20Mesquita%20Jr.%20July%202011.%20In%20both%20games,%20black%20lost,%20though%20not%20with%20the%20best%20analysis.%20My%20opponent%20would%20put%20up%20maximum%20resistance,%20which%20involved%20heavy%20computer%20analysis.%20%26%23125;%20(%2015.Bxc4%20%26%23123;%20This%20is%20the%20standard%20main%20line,%20but%20black%20has%20resources%20to%20hold%20at%20least%20a%20draw.%20%26%23125;%2015...Rxc4%2016.Bxg7%20Kxg7%2017.Rhe1%20Qa5%20%26%23123;%20And%20the%20games%20end%20up%20drawing%20for%20black%20in%20the%20ICCF%20archives.%20%26%23125;%20)%2015...b5%2016.g4%20%26%23123;%20Now%20white%20gets%20the%20pawn%20march%20going%20without%20black%20being%20able%20to%20untangle%20his%20pieces%20in%20time.%20%26%23125;%2016...e6%20%26%23123;%20The%20best%20try%20coming%20from%20hours%20of%20computer%20analysis.%20Unfortunately%20for%20my%20opponent,%20it-s%20still%20not%20enough%20to%20save%20the%20draw.%20%26%23125;%2017.gxh5%20Nxh5%2018.Rhg1%20b4%2019.Nce2%20Qf6%2020.Rdf1%20d5%2021.Bxg7%20Nxg7%2022.Bxc4%20dxc4%2023.f4%20%26%23123;%20White-s%20pawn%20storm%20is%20significantly%20more%20potent%20than%20black-s.%20%26%23125;%2023...b3%2024.h5%20bxc2+%2025.Qxc2%20Nxh5%2026.f5%20Qg7%2027.Rg5%20c3%2028.bxc3%20Qf6%2029.Rfg1%20e5%2030.Rxh5%20exd4%2031.Nxd4%20Qb6+%2032.Qb3%20Qxb3+%2033.axb3%20Rxc3%2034.fxg6%20fxg6%2035.Rxg6+%20Kf7%2036.Rxa6%20%26%23123;%20After%20the%20dust%20has%20settled,%20I%20reach%20the%20endgame%20a%20clear%20two%20pawns%20up.%20This%20is%20technically%20lost%20for%20black,%20but%20it%20requires%20some%20finesse%20to%20force%20the%20win.%20%26%23125;%2036...Bc8%2037.Rb6%20Rd3%2038.Nc6%20Rd2%2039.Ne5+%20Ke8%2040.Rh1%20Rg8%2041.Rc1%20Bh3%2042.Ng6%20Rg7%2043.Rh1%20Rh7%20%26%23123;%20After%20this%20position,%20I%20knew%20I%20had%20the%20win%20in%20hand.%20I%20can%20force%20a%20Tablebase%20ending%20immediately.%20%26%23125;%2044.Rb8+%20Rd8%2045.Rxd8+%20Kxd8%2046.Kb2%20Rg7%2047.Rxh3%20Rxg6%2048.e5%20%26%23123;%20The%20position%20is%20a%206-piece%20Tablebase%20ending%20with%20white%20delivering%20checkmate%20on%20move%2080.%20I%20announced%20this%20to%20my%20opponent,%20and%20he%20confirmed%20it%20and%20resigned.%20%26%23125;%20%0A1-0%0A"]

[Event "WS/MN/083"]
[Site "ICCF"]
[Date "2012.5.2"]
[Round "-"]
[White "Morrow, Wolff"]
[Black "Grego, Lu�s Jos� Gonzaga"]
[Result "1-0"]
[WhiteElo "2301"]
[BlackElo "2316"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 Bd7 10.O-O-O Rc8 11.Bb3 Ne5 12.Kb1 a6 { This was the pet line my opponent always played for in his previous games. I knew this, and prepared the -gem- refutation for him on move 15. } 13.h4 h5 14.Bh6 Nc4 15.Qc1! { This is the new move that kills the entire 12...a6 line. It was played first in Salvador Marques - Alberto da Silva January 2011, and later in Walter - Mesquita Jr. July 2011. In both games, black lost, though not with the best analysis. My opponent would put up maximum resistance, which involved heavy computer analysis. } ( 15.Bxc4 { This is the standard main line, but black has resources to hold at least a draw. } 15...Rxc4 16.Bxg7 Kxg7 17.Rhe1 Qa5 { And the games end up drawing for black in the ICCF archives. } ) 15...b5 16.g4 { Now white gets the pawn march going without black being able to untangle his pieces in time. } 16...e6 { The best try coming from hours of computer analysis. Unfortunately for my opponent, it-s still not enough to save the draw. } 17.gxh5 Nxh5 18.Rhg1 b4 19.Nce2 Qf6 20.Rdf1 d5 21.Bxg7 Nxg7 22.Bxc4 dxc4 23.f4 { White-s pawn storm is significantly more potent than black-s. } 23...b3 24.h5 bxc2+ 25.Qxc2 Nxh5 26.f5 Qg7 27.Rg5 c3 28.bxc3 Qf6 29.Rfg1 e5 30.Rxh5 exd4 31.Nxd4 Qb6+ 32.Qb3 Qxb3+ 33.axb3 Rxc3 34.fxg6 fxg6 35.Rxg6+ Kf7 36.Rxa6 { After the dust has settled, I reach the endgame a clear two pawns up. This is technically lost for black, but it requires some finesse to force the win. } 36...Bc8 37.Rb6 Rd3 38.Nc6 Rd2 39.Ne5+ Ke8 40.Rh1 Rg8 41.Rc1 Bh3 42.Ng6 Rg7 43.Rh1 Rh7 { After this position, I knew I had the win in hand. I can force a Tablebase ending immediately. } 44.Rb8+ Rd8 45.Rxd8+ Kxd8 46.Kb2 Rg7 47.Rxh3 Rxg6 48.e5 { The position is a 6-piece Tablebase ending with white delivering checkmate on move 80. I announced this to my opponent, and he confirmed it and resigned. } 
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