MESON Chess Problem Database

Problem Display
PID: 54668 (8/3B4/1p4P1/1Rp2pr1/2k5/4p3/b1NPKP2/7Q w - - 0 1)

Mansfield, Comins

3rd HM., Schakend Nederland, 1971

8/3B4/1p4P1/1Rp2pr1/2k5/4p3/b1NPKP2/7Q

#2

8 + 7

259 Thema Danicum 1976
4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qe4#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Be6#
        • 2.Rb4#
        • 2.Qe6#
      • 1...Rxg6
        • 2.Rb4#
      • 1...f4
        • 2.Rb4#
        • 2.Qe4#
      • 1...exd2!
    • 1.Qa8?
      • threat
        • 2.Qxa2#
        • 2.Qg8#
      • 1...Rxg6
        • 2.Qxa2#
      • 1...Bb1
        • 2.Qg8#
      • 1...Bb3
        • 2.Qg8#
      • 1...f4
        • 2.Qe4#
        • 2.Qxa2#
      • 1...exd2!
    • 1.Qh8?
      • threat
        • 2.Sxe3#
        • 2.Qg8#
      • 1...Kd5
        • 2.Qd4#
      • 1...Rxg6
        • 2.Sxe3#
      • 1...exd2
        • 2.Se3#
      • 1...exf2
        • 2.Se3#
        • 2.Qg8#
      • 1...Rg3
        • 2.Qg8#
      • 1...f4!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Sxe3#
        • 2.Qxa2#
      • 1...Kd5
        • 2.Qd4#
      • 1...exd2
        • 2.Se3#
      • 1...exf2
        • 2.Se3#
        • 2.Qxa2#
      • 1...Rg3
        • 2.Qxa2#
      • 1...Bb1
        • 2.Sxe3#
      • 1...Bb3
        • 2.Sxe3#
      • 1...f4
        • 2.Qxa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::QAR2(A)
  • Tries
    • Try
      • Q(A);P_PINP(d)
      • Threat
        • DUALS(3)
      • Vars
        • R(f);XP(G)::R1(F)
      • Refutation
        • P(b);XP(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);XP(G)::QAB(A),XB(a)
        • B(a);::QAB(A)
      • Refutation
        • P(b);XP(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P_SPINP(d),S_FLIGHT::QAR1(A)
        • R(f);XP(G)::S(B),XP(b)
        • P(b);XP(C)::S(B)
        • R(f);::QAB(A)
      • Refutation
        • P(e);
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);P_SPINP(d),S_FLIGHT::QAR1(A)
      • P(b);XP(C)::S(B)
      • R(f);::QAB(A),XB(a)
      • B(a);::S(B),XP(b)
      • P(e);::QAB(A),XB(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).