MESON Chess Problem Database

Problem Display
PID: 66243 (2Q2B2/Kp6/1p3p2/1P1k1n2/P1NqpP2/2p2N2/4P3/1B4b1 w - - 0 1)

Anonymous

The Chess Monthly (Hoffer), 1881

2Q2B2/Kp6/1p3p2/1P1k1n2/P1NqpP2/2p2N2/4P3/1B4b1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc4
      • 2.Qxf5#
  • Tries
    • 1.Qxf5+?
      • 1...Kxc4
        • 2.Ba2#
      • 1...Qe5!
    • 1.Qxb7+?
      • 1...Kxc4
        • 2.Ba2#
      • 1...Ke6!
    • 1.Qd7+?
      • 1...Kxc4
        • 2.Ba2#
      • 1...Sd6!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Sxb6#
      • 1...Kxc4
        • 2.Ba2#
      • 1...Qxc5
        • 2.Qg8#
      • 1...Qxc4
        • 2.Qxf5#
      • 1...bxc5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_GUARD,SBLOCK,XS(E)::QAR2(I),XS(f)
  • Tries
    • Try
      • Q(I);CHECK,XS(f)
      • Vars
        • K(e);S_FLIGHT,XS(E)::B(A)
      • Refutation
        • Q(c);P_SPINQ(c)
    • Try
      • Q(I);CHECK,XP(i)
      • Vars
        • K(e);S_FLIGHT,XS(E)::B(A)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(e);S_FLIGHT,XS(E)::B(A)
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • B(J);
    • Threat
      • S(E),XP(g)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(E)::B(A)
      • Q(c);SBLOCK,XB(J)::QAB(I)
      • Q(c);N_GUARD,SBLOCK,XS(E)::QAR2(I),XS(f)
      • P(g);SBLOCK,XB(J)::QAB(I)
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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).