MESON Chess Problem Database

Problem Display
PID: 161027 (3r4/b7/6b1/4n3/Q3p3/1Np5/RN2p1K1/4k1B1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Die Schwalbe, 1977

3r4/b7/6b1/4n3/Q3p3/1Np5/RN2p1K1/4k1B1

#2

6 + 8

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Bf2#
    • 1...Ra8
      • 2.Ra1#
    • 1...Rb8
      • 2.Ra1#
    • 1...Rc8
      • 2.Ra1#
    • 1...Re8
      • 2.Ra1#
    • 1...Rf8
      • 2.Ra1#
    • 1...Rg8
      • 2.Ra1#
    • 1...Rh8
      • 2.Ra1#
    • 1...Bf2
      • 2.Bxf2#
    • 1...Bd4
      • 2.Ra1#
    • 1...Bb8
      • 2.Bf2#
    • 1...Sd7
      • 2.Ra1#
    • 1...e3
      • 2.Qh4#
  • Keys
    • 1.Qd4!
      • threat
        • 2.Bf2#
        • 2.Ra1#
      • 1...Rxd4
        • 2.Bf2#
      • 1...Bxd4
        • 2.Ra1#
      • 1...cxb2
        • 2.Bf2#
      • 1...Rf8
        • 2.Ra1#
        • 2.Qxc3#
      • 1...Sd3
        • 2.Qxc3#
      • 1...Sg4
        • 2.Ra1#
      • 1...c2
        • 2.Bf2#
      • 1...e3
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • R(h);S_CUTB(g)::B(A)
    • R(h);N_GUARD::R(B)
    • B(g);N_GUARD::B(A),XB(g)
    • B(g);S_CUTR(h)::R(B)
    • B(g);N_GUARD::B(A)
    • S(e);S_CUTR(h)::R(B)
    • P(d);OGATE::QAB(F)
  • Actual
    • Q(F);
    • Threat
      • DUALS(2)
    • Vars
      • R(h);XQ(F)::B(A)
      • B(g);XQ(F)::R(B)
      • P(c);XS(C)::B(A)
      • S(e);S_CUTR(h)::QAB(F),XP(c)
      • S(e);::R(B)
      • P(c);::B(A)
      • P(d);OGATE::QAB(F)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).