january 11 2011

For this second session of the year, one more element among the auditors, because our friend Guy honoured us with his presence, as well as Gregory who returned from convalescence. 

The course was almost held in the hall on the coffee table (and without a table base).

To begin the agape, a very fine study where, despite the space allocated to the Queen, we can see that she lacks air.

1 - White to play and win

W. : Ka3 Qd4 Né2
B. : Kh3 Qg4 Pg6
+                              (3+3)

The solution requires only 5 moves, so don't be intimidated.

For the next one, you need exceptional footwork, as the Knight has four legs and can gallop very fast in defence.

2 - White to play and win

W. : Ka5 Pb7g6h4
B. : Kb8 Nç1 Pg7
+                              (4+3)

Simkhovich 1Diot

In addition to the introductory helpmates, a very strange (and by no means trivial) 3-moves by a famous composer... of studies. Then a venerable French strategic multi-moves and a longer German one.

We were whetted by Beliavsky-Polou, here is another Queen-Knight against Queen: much simpler and much shorter. The author of this study scalped Rubinstein five years later, but this time the Queen was accompanied by a Rook. One can also evoke the way including our former French champion GM Eric Prié,

Drewitt without even the use of a Knight, wins a Queen endgame with three pawns less.

Speelman 1

A "photo study" of a friendly grandmaster (ex-candidate) to lighten the mood. What happens in the north-east corner "only happens to others", as Polnareff sang...

It is rare that in the endgame (or even in the "pre-endgame") a King flees the centre like the plague, to take refuge... in a corner of the chessboard. We knew well a Kortchnoi-Matanović game where the White King went from e4 to h1, which in a Bishops and Knights endgame does not seem to make sense. But the choice of the route was not absolutely forced. Here it is a little shorter, but rigorous.

A wild fight where both players absolutely need the whole point. So there is no need to "make the play", it makes itself. On the 20th move White misses a better move. But it is not easy to propose the exchange of Queens, even though White immobilises two Black figures for mate threats in one move. Note that in Daniel's variation 20 Qc5 Bd5 21 Nd2 (21 Nc3!) Rc7 22 Nxc4 the speaker "forgot" 22...Qxe2+! 23 Kxe2 Bxc4+.

See you if God wills in a fortnight, on January 25. Before that, nothing forbids you to come and suffer with us (or simply encourage us) on Sunday 23rd at the Solving Contest.

Have a good time.


Of course, the first white move is simple, but it's the rest that is less so
To finish, an amazing position which is an incestuous cross between the middle game and the endgame and where black plays at best.

3 - black plays and save 

W. : Ké2 Rç2 Bb5 Nb6 Pd7h4b3g3
B. : Kf6 Rd4 Bh6 Né5 Pf7g6h5b4
=                              (8+8)

black to move

It is vital to give ourselves the means to place a perpet, but it will be hard.

The day's game is a real gladiatorial battle that nature, as everyone knows, has generously provided.

4 - game of the day 

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 dc 5. Bg2 c5
5. … a6 or Bd7
6. Qa4+
6. 0-0 Nc6 7. Ne5 Bd7 8. Na3 and it's another game that begins
6. … Nc6
6. … Bd7 7. Qxc4 Bc6 8. dc Nbd7 9. Be3 Bd5
7. 0-0
7. dxc5 Bxc5 8. 0-0
7. … Bd7 8. dc
8. Qxc4 b5 followed by Rc8
8. … Ne5
8. … Na5 9. Qc2 Bxc5 10. Ne5
9. Qc2 Nxf3+ 10. Bxf3 Qc8
10. … Bxc5
11. Be3 Bxc5 12. Bxb7 Qxb7 13. Bxc5 Rc8
13. … h5 14. Nd2 Rc8 15. Nxc4 Qd5 16. b4 or Qd5 14. b4 cb e.p.  15. ab
14. Ba3 h5 15. h4 Qe4 16. Qd2 Bc6 17. f3 Qe5 18. Kf2 Rd8 19. Qb4 Rd7 20. Rd1
20. Qxc4 Bb5 21. Qc2 g5! 22. hg (22. Rh1 gh 23. Rxh4 Rg8 24. Rh3 h4) h4 or 20. Nd2 but the best is 20. Qc5! Qxc5 21. Bxc5 Rc7 22. Bd6 Rb7 23. Na3 Rxb2 24. Nxc4 and it's nightmarish
20. … a5 ! 21. Qe1
21. Qxc4 Rxd1 22. Qxc6+ Kd8! 23. Qa8+ Kd7!
21. … Rh6 22. Rxd7 Ng4+ ! 23. Kf1 Bxd7 24. e4 Qf6 25. Ke2 ?
The only real mistake 25. Kg2! Ne5 26. Qf2 Rg6 and the tension remains
25. … Qd4 ! 26. fxg4 Rf6 27. Nd2 Qd3+ 28. Kd1 Ba4+ resigns
Below is the final position
 Nice, isn't it?
 For the dining part, we start slowly with a small composition in ortho/diago already seen a few dozen times.

5 - serial parade h#6
W. : Kf5 Rf6 Bg4 Pa3
B. : Kb3 Qh5 Ba8 Né8h2 Ph7d6d5g5a4é3b2ç2
shp‡6                        (4+13)
 serial parade helpmate : Black plays serial moves and when he puts the white king in check, white can parry the check by playing 1 move.

A nice assist follows.

6 - h#2 with chinese piece 4 solutions
W. : Ka2 Bç4 Nd7 Pé5 PAf1 VAg1
B. : Qf2 Rh7ç5 Bb7f6 Pa7f7g3d2 PAg2 VAd8
h‡2   4 solutions        (6+11)
Vao : moves like a Bishop but a sautoir is required for a capture
Pao : moves like a Rook but a sautoir is required for a capture

And to finish Pursuit Chameleon (hang on)
7 - h#3  Pursuit Chameleon

W. : Kd2 Rd5 Nd6
B. : Kf8 Nh1 Pf6
h‡3                           (3+3)
Chameleon : the piece changes its nature according to the scheme Q -> R -> B -> N -> Q ->
Pursuit : Pursuit (Chess -): Black (or the side playing second) must play on the square previously occupied by the white piece that has just played. If Black can play more than one piece on this square, then he is free to choose which one to play on. If no black piece can move to that square in one move, then black plays whatever he wishes.

That is all for this report.
You will find the electronic version of the Master below (thanks to him).
See you in 2 weeks.

Yours sincerely.

Le greffier 

Mestre's correction

Almost without mistake.

I was about to talk about 100% when I noticed the last problem: the definition of chameleon, confirmed by Guy, is correct among problemists, but this problem is improperly called that (another trick of the English...). More correct would be "andernach pursuit" since each pursuit produces a change of colour, as in the etymological meaning of the word. Or the "chameleon" should be renamed. And I seem to remember that this problem has two solutions.

Enjoy your reading.


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