MESON Chess Problem Database

Problem Display
PID: 55884 (3B2b1/n2NN1q1/KPBkppR1/p7/4pP2/bQ2p3/8/r7 w - - 0 1)

Mansfield, Comins

5th HM., Probleemblad, 1978

3B2b1/n2NN1q1/KPBkppR1/p7/4pP2/bQ2p3/8/r7

#2

9 + 11

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qxd1#
      • 2.Qxa3#
    • 1...Re1
      • 2.Qxa3#
    • 1...Rf1
      • 2.Qxa3#
    • 1...Rg1
      • 2.Qxa3#
    • 1...Rh1
      • 2.Qxa3#
    • 1...e5
      • 2.fxe5#
    • 1...f5
      • 2.Qd5#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Qd4#
      • 1...Qxe7
        • 2.Bc7#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Bb2
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sb5
        • 2.Sc8#
      • 1...e5
        • 2.Sf5#
        • 2.fxe5#
      • 1...f5
        • 2.Sxf5#
        • 2.Qd5#
      • 1...Rd1!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qd4#
      • 1...Qxe7
        • 2.Bc7#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...e5
        • 2.Qxe5#
      • 1...Bb2
        • 2.Qc5#
      • 1...Rd1
        • 2.Qxa3#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sb5
        • 2.Sc8#
      • 1...f5
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::QAB(A),XB(b)
    • P(g);OGATE,P_SPINP(h)::P(B),XP(g)
    • P(h);P_SPINP(g)::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • Q(j);SBLOCK,XS(H)::B(I)
        • S(i);OGATE,XB(E)::QAR1(A),XS(i)
        • B(b);N_GUARD::QAB1(A)
        • B(b);N_GUARD::QAB1(A),XB(b)
        • S(i);N_GUARD::S(H)
      • Refutation
        • R(a);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • Q(j);SBLOCK,XS(H)::B(I)
      • S(i);OGATE,XB(E)::QAR1(A),XS(i)
      • P(g);P_SPINP(h)::QAB1(A),XP(g)
      • B(b);N_GUARD::QAB1(A)
      • R(a);N_GUARD::QAB(A),XB(b)
      • B(b);N_GUARD::QAB1(A),XB(b)
      • S(i);N_GUARD::S(H)
      • P(h);P_SPINP(g)::S(H),XP(h)
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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).