Problem Display
PID: 16946 (4r3/2N3p1/2K3Qp/2ppkp1n/2Rp1p1R/n2q1pb1/b3P3/4r3 w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

One Hundred Published Problems, 1944

4r3/2N3p1/2K3Qp/2ppkp1n/2Rp1p1R/n2q1pb1/b3P3/4r3

#2

6 + 16


SOLUTION


  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxe8#
    • 1...Qe4
      • 2.Qd6#
    • 1...Re6+
      • 2.Qxe6#
    • 1...Ra8
      • 2.Qe6#
    • 1...Rb8
      • 2.Qe6#
    • 1...Rc8
      • 2.Qe6#
    • 1...Rd8
      • 2.Qe6#
    • 1...Rf8
      • 2.Qe6#
    • 1...Rg8
      • 2.Qe6#
    • 1...Rh8
      • 2.Qe6#
  • Keys
    • 1.e4!
      • threat
        • 2.Qxf5#
      • 1...Re6+
        • 2.Qxe6#
      • 1...Kxe4
        • 2.Qxe8#
      • 1...Qxe4
        • 2.Qd6#
      • 1...Rxe4
        • 2.Qd6#
      • 1...dxe4
        • 2.Qd6#
      • 1...fxe4
        • 2.Rxh5#
      • 1...dxe4 ep
        • 2.Qd6#
      • 1...fxe4 ep
        • 2.Qd6#
      • 1...Rf8
        • 2.Qe6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • K(k);P-FLIGHT,P_SPINP(g)::QAR(E),XR(p)
    • Q(d);SBLOCK::QAB1(E)
    • R(p);CHECK,N_GUARD::QAR1(E),XR(p)
    • R(p);N_GUARD::QAR1(E)
    • R(p);N_GUARD,P_PINS(F)::QAR1(E)
  • Actual
    • P(A);
    • Threat
      • QAR1(E),XP(l)
    • Vars
      • R(p);CHECK,N_GUARD::QAR1(E),XR(p)
      • K(k);P-FLIGHT,P_SPINP(g),XP(A)::QAR(E),XR(p)
      • Q(d);SBLOCK,XP(A)::QAB1(E)
      • R(a);SBLOCK,XP(A)::QAB1(E)
      • P(j);SBLOCK,XP(A)::QAB1(E)
      • P(l);OGATEB,XP(A)::R(C),XS(m)
      • P(g);EP,XP(A)::QAB1(E)
      • P(h);EP,XP(A)::QAB1(E)
      • R(p);N_GUARD::QAR1(E)


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).