Black to move; White draws

Black to move; White draws

Posers and Puzzles

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Plop!

/dev/null

Joined
05 Feb 06
Moves
33088
07 Apr 06

[gid]4b3/7p/3N4/p7/2R5/kpPpp3/p7/Q3K3 b - - 0 1[/gid]

PP

Belfast

Joined
27 Jan 06
Moves
1809
07 Apr 06

Originally posted by coentje
[gid]4b3/7p/3N4/p7/2R5/kpPpp3/p7/Q3K3 b - - 0 1[/gid]
Slick.

M

Joined
12 Mar 03
Moves
44411
07 Apr 06
1 edit



Yes, he does. Black's only move is 1. ... d2+.
Because 1. ... b2+ loses to 2.Ra4+ Bxa4 (or mate in 1or 2) 3.Nc4+ Kb3 4.Nxb2 wins easily.

So: 1. ... d2
2.Kf1 e2+ 3.Kxe2 d1=Q+ 4.Kxd1 b2 (other moves, then white wins with Kc1 and Qb2 checkmate) 5.Ra4+ Bxa4+ (or white mates with Qxa2) 6.Kd2 and after any promotion on a1, white has perpetual check after 7.Nc4+ , for instance: 6. ... bxQ=Q 7.Nc4+ Kb3 8.Na5+ and back to c4, alternating between c4 and a5 or a3 depending on the kings choice.

Plop!

/dev/null

Joined
05 Feb 06
Moves
33088
07 Apr 06

Originally posted by Mephisto2
[fen]4b3/7p/3N4/p7/2R5/kpPpp3/p7/Q3K3 b - - 0 1[/fen]

Yes, he does. Black's only move is 1. ... d2+.
Because 1. ... b2+ loses to 2.Ra4+ Bxa4 (or mate in 1or 2) 3.Nc4+ Kb3 4.Nxb2 wins easily.

So: 1. ... d2
2.Kf1 e2+ 3.Kxe2 d1=Q+ 4.Kxd1 b2 (other moves, then white wins with Kc1 and Qb2 checkmate) 5.Ra4+ Bxa4+ (or white mates with Qxa2) 6.Kd2 and aft ...[text shortened]... + Kb3 8.Na5+ and back to c4, alternating between c4 and a5 or a3 depending on the kings choice.
No need anymore to say anything. Perfect solution to Mephisto2

Sorry about messing up the board post, did not see i pressed the wrong button untill now.