MESON Chess Problem Database

Problem Display
PID: 169043 (3K4/3N2B1/3p4/Rr3kpP/2Q1N2p/4Pp1b/5P1b/3R4 w - - 0 1)

Janevski, Zivko

2nd Prize, SuperProblem 076. TT, 2013

3K4/3N2B1/3p4/Rr3kpP/2Q1N2p/4Pp1b/5P1b/3R4

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Sg3#
    • 1...Re5
      • 2.Sxd6#
    • 1...Bg1
      • 2.Sxd6#
  • Tries
    • 1.Rxb5+?
      • 1...Kg4
        • 2.Sg3#
        • 2.Sef6#
        • 2.Sdf6#
        • 2.Rxg5#
      • 1...Be5
        • 2.Sxd6#
      • 1...d5!
    • 1.Qf7+?
      • 1...Kxe4
        • 2.Rd4#
      • 1...Kg4!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Sdc5#
      • 1...Kxe4
        • 2.Qc2#
      • 1...Kg4
        • 2.Sdf6#
      • 1...Ke6
        • 2.Se5#
      • 1...Rc5
        • 2.Sdxc5#
      • 1...Re5
        • 2.Sdf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(f);N_SPINR(e),S_FLIGHT::QAR(D)+S(E)
    • R(e);S_CUTB(a)::S(E),XP(h)
    • B(a);N_GUARD::S(E),XP(h)
  • Tries
    • Try
      • R(F);CHECK,XR(e)
      • Vars
        • B(a);P_SPINB(a)::S(E),XP(h)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • Q(D);CHECK
      • Vars
        • K(f);N_SPINR(e),S_FLIGHT,XS(E)::R1(A)
      • Refutation
        • K(f);N_SPINR(e),S_FLIGHT
  • Actual
    • Q(D);
    • Threat
      • QAB(D)+S(H)
    • Vars
      • K(f);N_SPINR(e),OGATEB,S_FLIGHT,XS(E)::QAB(D)
      • K(f);N_SPINR(e),S_FLIGHT::QAB(D)+S(H),DCHECK
      • K(f);N_SPINR(e),S_FLIGHT::QAB(D)+S(H)
      • R(e);::QAB(D)+S(H),XR(e)
      • R(e);::QAB(D)+S(H)
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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).