Nº20 Marc Gelly

Win

Section B.1.

Marc Gelly (France)

wKh1,Pb5,c5,d2,d6,e2,e3/bKf7,Be8,Pe5,e6,e7,g3

1.d7!!
1.c6? e×d6 2.Kg2 Ke7 3.K×g3 -/+

1….B×d7 2.c6! Be8!
2…B×c6 3.b×c6 Ke8 4.Kg2! + –
2…Ke8 3.c×d7+ K×d7 4.Kg2! + –

3.d3!!
Try: 3.Kg2? e4! 4.K×g3 Kf6 5.c7 Bd7 6.b6 Bc8 7.Kf4 e5+! 8.K×e4 Ke6 9.d3 Bb7#(9.Kf3 Kd5 – +)
3.e4? B×c6! 4.b×c6 Ke8 5.Kg2 Kd8 =
3.d4? e×d4 4.e×d4 Kf6 – +

3…e4!
3…Kf6 4.Kg2 Kf5 5.K×g3 e4 5.d4 Kg5 idem main line.

4.d4!
4.Kg2? e×d3 5.e×d3 e5 6.K×g3 Ke6 7.Kg4 Kd6 8.Kf5 Bf7 – +

4…Kg6
4…B×c6 5.b×c6 Ke8 6.Kg2 Kd8 7.K×g3 + –

5.Kg2 Kf5 6.K×g3 Kg5 7.Kf2!!
7.Kg2? Kg4 =

7…Kg4(h4) 8.Ke1!
8.Kg2? Kh4 9.Kf1 Kg3 10.Ke1 Kg2 11.Kd1 Kf1!12.Kd2 Kf2 13.Kc3 K×e3! =

8…Kg3! 9.Kd1!!
9.Kd2? Kf2 10.Kc3 Kxe3! =

9…Kg2!10.Kc2! Kf211.Kd2! Kf1 12.Kc3!!
12.Kd1? Kf2 13.Kd2 is loss of time.

12…K×e2 13.d5!!
13.Kc4? K×e3 14.Kc5 Kf3 =

13…e×d5
13…K×e3 14.d×e6 or b6 + –

14.Kd4 e6 15.Kc5! K×e3 16.b6 B×c6 17.K×c6 d4 18.b7 d3 19.b8Q+-Win.

Key sacrifice. Quiet move 3.d3!!.Try with bishop’s mate.Zugzwang. Cases conjuguées.