MESON Chess Problem Database

Problem Display
PID: 61194 (2Q2K1k/5p2/5pp1/7r/8/7R/8/8 w - - 0 1)

Russkikh, Vladimir Evdokimovich

Uralski Problemist, 2004

2Q2K1k/5p2/5pp1/7r/8/7R/8/8

#2

3 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh3
      • 2.Qxh3#
    • 1...Rh4
      • 2.Rxh4#
    • 1...Rh6
      • 2.Rxh6#
    • 1...g5
      • 2.Rxh5#
  • Tries
    • 1.Qc3?
      • 1...Rxh3
        • 2.Qxh3#
      • 1...Rh4
        • 2.Rxh4#
      • 1...Rh6
        • 2.Rxh6#
      • 1...Rh7
        • 2.Qxf6#
      • 1...g5
        • 2.Rxh5#
      • 1...Kh7!
  • Keys
    • 1.Qf5!
      • 1...Kh7
        • 2.Rxh5#
      • 1...Rxh3
        • 2.Qxh3#
      • 1...gxf5
        • 2.Rxh5#
      • 1...Rh4
        • 2.Rxh4#
      • 1...Rh6
        • 2.Rxh6#
      • 1...Rh7
        • 2.Qxf6#
      • 1...g5
        • 2.Rxh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(a);N_SPINR(a),OGATE,XR(A)::QAR(B),XR(a)
    • R(a);OGATEB::R(A),XR(a)
    • R(a);OGATE::R(A),XR(a)
    • P(c);N_GUARD::R(A),XR(a)
  • Tries
    • Try
      • Q(B);P_PINP(b)
      • Vars
        • R(a);N_SPINR(a),OGATE,XR(A)::QAR(B),XR(a)
        • R(a);OGATEB::R(A),XR(a)
        • R(a);OGATE::R(A),XR(a)
        • R(a);::QAB(B),XP(b)
        • P(c);N_GUARD::R(A),XR(a)
      • Refutation
        • K(e);N_SPINP(b),P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(e);P-FLIGHT,P_SPINP(c)::R(A),XR(a)
      • R(a);N_SPINR(a),OGATE,XR(A)::QAR(B),XR(a)
      • P(c);N_GUARD,XQ(B)::R(A),XR(a)
      • R(a);OGATEB::R(A),XR(a)
      • R(a);OGATE::R(A),XR(a)
      • R(a);::QAB(B),XP(b)
      • P(c);N_GUARD::R(A),XR(a)
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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).