MESON Chess Problem Database

Problem Display
PID: 17630 (8/2R5/4p1b1/2pk4/R2n3Q/Nq1p2B1/2p2K2/b7 w - - 0 1)

Mansfield, Comins

Comm., German Ring Ty., 1948

8/2R5/4p1b1/2pk4/R2n3Q/Nq1p2B1/2p2K2/b7

#2

6 + 9

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qd8#
    • 1...Se2
      • 2.Qd8#
    • 1...Sf3
      • 2.Qd8#
    • 1...Sf5
      • 2.Qh1#
      • 2.Qe4#
    • 1...Sc6
      • 2.Rd7#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...Sf5
        • 2.Qf3#
        • 2.Qe4#
      • 1...Se2
        • 2.Qd6#
      • 1...Sf3
        • 2.Qd6#
      • 1...Sc6
        • 2.Rd7#
        • 2.Qd6#
      • 1...Sb5!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...Se2
        • 2.Qd8#
      • 1...Sf3
        • 2.Qd8#
      • 1...Sb5
        • 2.Qa8#
      • 1...Sf5
        • 2.Qh1#
      • 1...Sc6
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(i);SBLOCK::QAR(E)
    • S(e);::QAR(E)
    • S(e);SBLOCK::R(F)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • P(h);::QAR1(E),XP(h)
        • S(e);::QAR1(E)
      • Refutation
        • S(e);
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(g);P_SPINS(e),S_FLIGHT::QAR1(E)
      • P(h);::QAR1(E),XP(h)
      • S(e);::QAR(E)
      • S(e);N_GUARD,S_CUTQ(c)::QAB(E)
      • S(e);N_GUARD,S_CUTB(i)::QAB(E)
      • S(e);SBLOCK::R(F)
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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).