MESON Chess Problem Database

Problem Display
PID: 238822 (5K2/1Q1NBB2/6N1/R3PkP1/3b3p/5pqP/3P4/4r1R1 w - - 0 1)

Janevski, Zivko

Kudesnik, 2013

5K2/1Q1NBB2/6N1/R3PkP1/3b3p/5pqP/3P4/4r1R1

#2

12 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Qxf3#
    • 1...Qxg1
      • 2.Qxf3#
    • 1...Qg4
      • 2.hxg4#
    • 1...Qxg5
      • 2.Rxg5#
    • 1...Rb1
      • 2.Qxb1#
    • 1...Rxe5
      • 2.Qb1#
  • Tries
    • 1.Qxf3+?
      • 1...Qf4
        • 2.Sxh4#
        • 2.Qxf4#
      • 1...Qxf3!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Sc5#
      • 1...Ke4
        • 2.Qc2#
      • 1...Qxe5
        • 2.Sf6#
      • 1...Rxe5
        • 2.Qc2#
      • 1...Bc5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(c);N_GUARD,P_SPINQ(c),XP(E)::QAR2(H),XP(b)
    • Q(c);N_GUARD,XR(A)::QAR2(H),XP(b)
    • Q(c);OGATE::P(C),XQ(c)
    • Q(c);OGATE,XP(F)::R1(A),XQ(c)
    • R(a);N_GUARD::QAB(H),XR(a)
    • R(a);N_GUARD,P_SPINR(a),XP(E)::QAB(H)
  • Tries
    • Try
      • Q(H);CHECK,XP(b)
      • Refutation
        • Q(c);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)+S(I)
    • Vars
      • K(f);S_FLIGHT::QAB(H)
      • Q(c);P_SPINQ(c),XP(E)::QAB(H)+S(I)
      • R(a);N_GUARD,P_SPINR(a),XP(E)::QAB(H)
      • B(d);P_PINB(J)::QAB(H)+S(I),XB(d)
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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).