MESON Chess Problem Database

Problem Display
PID: 55722 (4B1b1/5p2/1pNP4/pN3Q2/2kP1K2/P4p2/P2pp3/2r5 w - - 0 1)

Mansfield, Comins

Christian Science Monitor, 1977

4B1b1/5p2/1pNP4/pN3Q2/2kP1K2/P4p2/P2pp3/2r5

#2

9 + 9

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Bh7
      • 2.Bxf7#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Qd3#
        • 2.Qc8#
        • 2.Qd5#
      • 1...d1Q
        • 2.Qc8#
        • 2.Qd5#
      • 1...d1R
        • 2.Qc8#
        • 2.Qd5#
      • 1...e1S
        • 2.Qc8#
        • 2.Qd5#
      • 1...Rc3
        • 2.Qc8#
        • 2.Qd5#
      • 1...Bh7
        • 2.Bxf7#
        • 2.Qc8#
        • 2.Qd5#
        • 2.Qxf7#
      • 1...f6
        • 2.Qd3#
        • 2.Qc8#
      • 1...axb4!
    • 1.Qc5+?
      • 1...Kd3
        • 2.Se5#
      • 1...bxc5!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Sb4#
      • 1...Kd3
        • 2.Se5#
      • 1...Kxb5
        • 2.Sa7#
      • 1...Kd5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(i);N_GUARD::B(I),XP(h)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(3)
      • Refutation
        • P(f);XS(G)
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);S_FLIGHT::S(G)
      • Refutation
        • P(g);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+S(G)
    • Vars
      • K(e);S_FLIGHT::S(G)
      • K(e);S_FLIGHT,XS(E)::B(I)+S(G),DCHECK
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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).