MESON Chess Problem Database

Problem Display
PID: 121422 (8/8/8/5bK1/4p3/3n3R/4QpkP/5R2 w - - 0 1)

Kuneticky, Otokar

Besedy lidu, 1904

8/8/8/5bK1/4p3/3n3R/4QpkP/5R2

#2

5 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rg1+?
      • 1...Kxh3
        • 2.Qh5#
      • 1...Kxg1!
    • 1.Rxf2+?
      • 1...Kg1
        • 2.Rf1#
        • 2.Qf1#
      • 1...Kh1
        • 2.Rf1#
        • 2.Qf1#
      • 1...Kxh3
        • 2.Qf1#
        • 2.Qh5#
        • 2.Qe3#
      • 1...Sxf2!
    • 1.Qxf2+?
      • 1...Kxh3
        • 2.Qg3#
      • 1...Sxf2!
  • Keys
    • 1.Rh1!
      • threat
        • 2.Qf1#
      • 1...Kxh1
        • 2.Qf1#
      • 1...Kxh3
        • 2.Qf1#
      • 1...Bxh3
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT,XR(D)::QAR2(B)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XR(A)
    • Try
      • R(A);CHECK,XP(a)
      • Refutation
        • S(c);P_SPINS(c),XR(A)
    • Try
      • Q(B);CHECK,XP(a)
      • Vars
        • K(b);S_FLIGHT,XR(D)::QAR1(B)
      • Refutation
        • S(c);XQ(B)
  • Actual
    • R(A);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);N_SPINP(a),S_FLIGHT,XR(A)::QAR2(B)
      • K(b);N_SPINP(a),S_FLIGHT,XR(D)::QAB(B)
      • B(e);N_GUARD,SBLOCK,XR(D)::QAB(B),XP(d)
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).