MESON Chess Problem Database

Problem Display
PID: 24569 (2bk1K2/r7/2Q5/3P2N1/8/8/8/8 w - - 0 1)

Siklosi, Miklos

Fakly a Klub musortuzet, 1973

2bk1K2/r7/2Q5/3P2N1/8/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sf7#
    • 1...Ra2
      • 2.Sf7#
    • 1...Ra3
      • 2.Sf7#
    • 1...Ra4
      • 2.Sf7#
    • 1...Ra5
      • 2.Sf7#
    • 1...Ra6
      • 2.Sf7#
    • 1...Rc7
      • 2.Qe8#
    • 1...Rd7
      • 2.Se6#
    • 1...Rf7+
      • 2.Sxf7#
    • 1...Ra8
      • 2.Sf7#
    • 1...Ba6
      • 2.Se6#
    • 1...Be6
      • 2.Sxe6#
    • 1...Bb7
      • 2.Se6#
      • 2.Sf7#
    • 1...Bd7
      • 2.Sf7#
  • Tries
    • 1.Qd6+?
      • 1...Rd7
        • 2.Se6#
        • 2.Sf7#
      • 1...Bd7!
    • 1.Qf6+?
      • 1...Kd7
        • 2.Qe7#
      • 1...Re7
        • 2.Qxe7#
      • 1...Kc7!
  • Keys
    • 1.d6!
      • threat
        • 2.Qe8#
      • 1...Rf7+
        • 2.Sxf7#
      • 1...Rd7
        • 2.Se6#
      • 1...Re7
        • 2.dxe7#
      • 1...Bd7
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • R(a);N_GUARD::S(B)
    • R(a);SBLOCK::QAR1(C)
    • R(a);S_CUTB(b)::S(B)
    • R(a);CHECK,N_GUARD::S(B),XR(a)
    • B(b);N_GUARD::S(B)
    • B(b);N_GUARD::S(B),XB(b)
    • B(b);S_CUTR(a)::S(B)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(C)
        • R(a);N_GUARD,P_SPINR(a)::QAB1(C),XR(a)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • P(A);
    • Threat
      • QAR1(C)
    • Vars
      • R(a);CHECK,N_GUARD::S(B),XR(a)
      • R(a);S_CUTB(b)::S(B)
      • R(a);OGATE::P(A),XR(a)
      • B(b);S_CUTR(a)::S(B)
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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).