MESON Chess Problem Database

Problem Display
PID: 18675 (8/B7/2np4/3kp3/K1N1r3/3r3Q/8/3R3B w - - 0 1)

Lipton, Michael

Rice, John Michael

Problem (Zagreb), 1957

8/B7/2np4/3kp3/K1N1r3/3r3Q/8/3R3B

#2

6 + 6

3147 Chess Problems: Introduction to an Art 1963
3174 The Two-move Chess Problem Tradition and Development 1966
3310 2345 Chess Problems 1997
5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qxd3#
  • Tries
    • 1.Bxe4+?
      • 1...Kxc4
        • 2.Qxd3#
      • 1...Kxe4!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qg8#
      • 1...Kxc4
        • 2.Qxc6#
      • 1...Sxa7
        • 2.Rxd3#
      • 1...Sd4
        • 2.Sb6#
      • 1...Sb4
        • 2.Se3#
      • 1...Sa5
        • 2.Rxd3#
      • 1...Se7
        • 2.Rxd3#
      • 1...Sb8
        • 2.Rxd3#
      • 1...Sd8
        • 2.Rxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINR(a),S_FLIGHT,XS(E)::QAB1(C),XR(a)
  • Tries
    • Try
      • B(B);CHECK,N_SPINS(E),XR(b)
      • Vars
        • K(c);N_SPINR(a),S_FLIGHT,XS(E)::QAB1(C),XR(a)
      • Refutation
        • K(c);N_SPINR(a),S_FLIGHT,XB(B)
  • Actual
    • Q(C);
    • Threat
      • QAB(C)
    • Vars
      • K(c);N_SPINR(a),P_SPINS(e),S_FLIGHT,XS(E)::QAR2(C),XS(e)
      • S(e);N_GUARD,XB(F)::R(A),XR(a)
      • S(e);N_PINS(E),N_SPINR(a),P_SPINR(b),SBLOCK::S(E)
      • S(e);N_PINS(E)::S(E)
      • S(e);N_GUARD::R(A),XR(a)
HTML5 logo

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).