MESON Chess Problem Database

Problem Display
PID: 55877 (4r3/Q7/p2p4/1p1k3p/q1NNp2K/b7/BB6/3R4 w - - 0 1)

Mansfield, Comins

Het Belgisch Schaakbord (L'Echiquier Belge), 1978

4r3/Q7/p2p4/1p1k3p/q1NNp2K/b7/BB6/3R4

#2

7 + 9

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Se3#
    • 1...Bc5
      • 2.Qb7#
  • Tries
    • 1.Sb6+?
      • 1...Kc5
        • 2.Sd5#
      • 1...Ke5!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qc6#
      • 1...Kc5
        • 2.Qxd6#
      • 1...Qxc4
        • 2.Se6#
      • 1...bxc4
        • 2.Sb3#
      • 1...Rc8
        • 2.Qf5#
      • 1...b4
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(i);SBLOCK::B(B)+S(D),DCHECK
    • B(a);SBLOCK::QAB(G)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);P-FLIGHT::QAB(G)+S(D)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • Q(G);P_PINP(h)
    • Threat
      • QAB1(G)
    • Vars
      • K(e);N_SPINP(h),P-FLIGHT::QAB1(G),XP(h)
      • Q(b);N_GUARD,P_SPINQ(b),XS(D)::R(A)+S(E)
      • P(d);N_SPINP(h),P_SPINP(d),SBLOCK,XS(D)::R(A)+S(E)
      • R(i);N_GUARD::QAR2(G)
      • P(d);S_CUTB(a)::QAR1(G),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).