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Mikael Nouro vs Peter Heine Nielsen
Politiken Cup 18th (1996), Copenhagen DEN, rd 6, Jun-??
Caro-Kann Defense: Classical Variation. Main lines (B18)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
May-10-20
Premium Chessgames Member
  g15713: E. 1.0
White to move after Black played 60...Qxa2


click for larger view

Rediscovered extremely rare and unusual ending - Q + N vs. R + R with no pawns on the board. John Nunn extensively analyzed the above diagram in his masterpiece <Secrets of Pawnless Endings>.

Syzygy says it is a tablebase draw -
'https://syzygy-tables.info/?fen=8%2...

Here is a tantalizing taste of what can be found in an excerpt from John Nunn's book:

<"The ending of"> ♕ + ♘ versus ♖ + ♖ <"is in general a draw. The basic method of defence is to double up the rooks on the third rank and keep the king on the first two ranks.
"In">
♕ + ♗ versus ♖ + ♖, <"this 'third-rank' defence can eventually be broken down, but with a knight it holds out. However, accurate play is required; in particular, the defender must make sure that his king is not forced towards one of the corners. If the defender is unable to set up a third-rank defence, then he generally loses. In the diagram position, the attacker has quite a favorable set-up because his king has advanced as far as possible, and his remaining pieces are in active positions. However, with correct defence it should still be a draw.">

E. 1.1
61. Rdc3?


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<"This is a mistake because it allows a check on d2, which forces White's king towards the a1-corner. White must try to keep his king in the rectangle c1-c2-f2-f1, hence"> 61. Rbc3! <"is the only drawing move, when White need not fear the check on b2 as it drives his king towards the centre.">

Syzygy 'https://syzygy-tables.info/?fen=8%2...

To see the rest of his great analysis - buy his book!

Game continued:

61...Qd2+ 62.Kb1 Qd1+ 63.Ka2 Nd2 64.Rb4+ Kd5 65.Rb2 Qa4+ 66.Ra3 Qc4+ 67.Ka1 Ke4 68.Ra7 Nb3+ 69.Ka2 Nc5+ 70.Ka3 Qc1 71.Ka2 Kd4 72.Rb4+ Kc3 73.Rb3+ Kd4 74.Rb4+ Kd5 75.Ra3 Qc2+ 76.Rb2 Qc4+ 77.Ka1 Nd3 78.Rbb3 Qc1+ 79.Ka2 Qd2+ 80.Kb1 Qd1+ 0-1

Reference: Nunn, John (2002), <Secrets of Pawnless Endings>
2nd edition., pages 372-374
Gambit Publications, ISBN 1-901983-65-X

Note: one wants the second edition which has 62 pages of extra material covering 6-man endgames.

centre and defence are chiefly British spelling variants of center and defense respectively

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Featured in the Following Game Collection[what is this?]
#02 61. Rbc3 draws! (♖+♖ versus ♛+♞)
from g15713's favorite Sundry endings by g15713

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