MESON Chess Problem Database

Problem Display
PID: 159934 (K2b1Bn1/n1p4r/1pPNkp2/4NR2/3QP3/8/b3pr2/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Freie Presse, 1968

K2b1Bn1/n1p4r/1pPNkp2/4NR2/3QP3/8/b3pr2/8

#2

8 + 11

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf5
      • 2.exf5#
    • 1...Bb1
      • 2.Qc4#
      • 2.Qd5#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bd5
      • 2.Qxd5#
      • 2.exd5#
    • 1...fxe5
      • 2.Qxe5#
    • 1...cxd6
      • 2.Qxd6#
  • Tries
    • 1.Sec4?
      • threat
        • 2.Qd5#
      • 1...Rxf5
        • 2.exf5#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Se7
        • 2.Qxf6#
      • 1...Sxc6!
    • 1.Sb7?
      • threat
        • 2.Sxd8#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Be7
        • 2.Qd7#
      • 1...Sxc6!
    • 1.Sdf7?
      • threat
        • 2.Sxd8#
        • 2.Qd7#
      • 1...Sxc6
        • 2.Qd7#
      • 1...Bd5
        • 2.Sxd8#
        • 2.Qxd5#
      • 1...Be7
        • 2.Qd7#
      • 1...Rxf7!
  • Keys
    • 1.Sdc4!
      • threat
        • 2.Qd5#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Se7
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(c);OGATE,XR(D)::P(B),XR(c)
    • B(a);N_GUARD::QAB(A),XB(a)
    • P(f);OGATE,XS(C)::QAR1(A),XP(f)
    • P(h);OGATE,XS(F)::QAR1(A),XP(h)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(A)
      • Vars
        • R(c);OGATE,XR(D)::P(B),XR(c)
        • B(a);OGATE,XS(C)::QAB(A),XB(a)
        • S(k);N_GUARD,S_CUTB(j)::QAR1(A),XP(f)
      • Refutation
        • S(g);XP(E)
    • Try
      • S(F);
      • Threat
        • S(F),XB(j)
      • Vars
        • R(i);N_GUARD::QAB1(A),XR(i)
        • B(j);S_CUTR(i)::QAB1(A)
      • Refutation
        • S(g);XP(E)
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);XP(E)::QAB1(A)
        • B(j);::QAB1(A)
      • Refutation
        • R(i);XS(F)
  • Actual
    • S(F);
    • Threat
      • QAB1(A)
    • Vars
      • B(a);OGATE,XS(F)::QAB(A),XB(a)
      • R(i);N_GUARD::QAB1(A),XR(i)
      • S(k);S_CUTR(i)::QAB1(A)
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).