MESON Chess Problem Database

Problem Display
PID: 75058 (8/7K/8/8/5QPk/7p/6rB/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

The Problemist, 1992

8/7K/8/8/5QPk/7p/6rB/8

#2

4 + 3

6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Bg3#
    • 1...Rb2
      • 2.Bg3#
    • 1...Rc2
      • 2.Bg3#
    • 1...Rd2
      • 2.Bg3#
    • 1...Re2
      • 2.Bg3#
    • 1...Rf2
      • 2.Bg3#
    • 1...Rg3
      • 2.Bxg3#
    • 1...Rxg4
      • 2.Qh6#
  • Tries
    • 1.Kg6?
      • threat
        • 2.Qg5#
      • 1...Rxh2
        • 2.g5#
      • 1...Rxg4+!
  • Keys
    • 1.Kh6!
      • threat
        • 2.Qg5#
      • 1...Rxh2
        • 2.g5#
      • 1...Rxg4
        • 2.Bg3#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::B(A)
    • R(a);N_GUARD::B(A),XR(a)
    • R(a);P_SPINR(a),SBLOCK,XP(C)::QAR2(B)
  • Tries
    • Try
      • K(D);P_SPINP(C),S_FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • R(a);N_GUARD,N_PINP(C),XB(A)::QAR(B)+P(C)
      • Refutation
        • R(a);CHECK,P_SPINR(a),XP(C)
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • QAB1(B)
    • Vars
      • R(a);N_GUARD,XB(A)::QAR(B)+P(C)
      • R(a);N_GUARD,P_SPINR(a),XP(C)::B(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).