g15713: John Nunn analyzes this ending extensively on pages 303 to 305 in his chess book, <Nunn's Chess Endings Volume 1> 2010, which covers general topics and discusses in detail pawn endings, queen endings and minor-piece endings except rook endgames. I will only remark and highlight certain moves. Nunn commented <"one of the most astounding discoveries to emerge from the 6-man databases was finding that">
♕ + (a- & b-pawns, or g- & h-pawns) vs ♕ is a theoretical drawn ending when <"the defending king is in front of the pawns."> F. 1.0
Black to move at 76
 click for larger viewSyzygy says it is a tablebase draw
'https://syzygy-tables.info/?fen=1q6... Game continued:
76...Kh8 77. Qf3 Qb1 78. h5 Qe1 79. g5 Qe6+ 80. Kg2 Kg7 81. Qb7+ Kh8 82. Qb8+ Kg7 83. Qc7+ Kh8 84. Qd8+ Kg7 85. Qd4+ Kg8 86. h6 Qe2+ 87. Kg3 Qe1+ 88. Kg4 Qe2+ 89. Kg3 Qe1+ 90. Qf2 Qe5+ 91. Qf4 Qe1+ 92. Kg2 Qe2+ 93. Kh3 Qe6+ 94. Kh4 Qe1+ 95. Kh5 Qe2+ 96. Kh4 Qe1+ 97. Kg4 Qe6+ 98. Qf5 Qe2+ 99. Qf3 Qe6+ 100. Kh4 Qe1+ 101. Kh3 Qe6+ 102. Kg2 Qe5 103. Qb3+ Kh8 104. Qg3 Qe2+ 105. Kg1 Qd1+ 106. Kf2 Qd2+ 107. Kf3 Qd3+ 108. Kf4 Qd6+ 109. Kg4 Qe6+ 110. Kh5 Qe2+ 111. Kh4 Qe4+ 112. Kh3 Qh1+ 113. Kg4 Qe4+ 114. Qf4 Qe6+ 115. Kh4 Qe1+ 116. Kh5 Qe2+ 117. Kg6 Qe8+ 118. Qf7 Qe4+ 119. Qf5 Qe8+ 120. Kf6 Qf7+ 121. Ke5 Qe7+ 122. Kf4 Qb4+ 123. Qe4 Qd2+ 124. Kg4 Qd7+ 125. Kh4 F. 1.1
Black to move at 125
 click for larger viewSyzygy says it is a tablebase draw if Black plays 125...Kg8 only move to draw
'https://syzygy-tables.info/?fen=7k/... <"White's main winning try is to occupy a good square with his queen, and then play his king round to f4 and then by some route to e7."> Nunn points out that another route is by playing his king out via h5 and g6. <"The best square for White's queen is c6, and the next best is d5, while b5 is also very dangerous (because it is hard to prevent the queen from transferring to c6 or d5)."> Nunn goes on to say that the best square for Black's queen is on d7 while the next best is b7. The Black king should be on g8 or h8 if possible. 125...Qf7? <Kg8!> 126. Qd4+ <Qc6 wins quicker> Kh7 127. Qd3+ Kh8 128. Qc3+ <Qb5 best> Kh7 129. Qd4 Kg8 130. Qd3 Kh8 131. Kg3? <Qb5!> Qc7+ 132. Kg4 Qc8+ 133. Kh4 Qb7! 134. Qc3+ Kh7 135. Qd3+ Kh8 136. Qd4+ Kh7? <Kg8!> 137. Kg3! Qb3+ 138. Kh4 Qf7 139. Qe4+ Kh8 140. Kg3? <Qc6!> Qc7+ 141. Qf4 F. 1.2
Black to move at 141
 click for larger view'https://syzygy-tables.info/?fen=7k/... 141...Qf7?? Blunder <141...Qd7! or Qc3+ draws> 142. Qf6+ 1-0 |