MESON Chess Problem Database

Problem Display
PID: 87781 (k7/1q6/8/6R1/5R2/5Q2/8/K7 w - - 0 1)

Selivanov, Andrei Vladimirovich

Problemist Pribuzhya, 1990

k7/1q6/8/6R1/5R2/5Q2/8/K7

#2

4 + 2

6490 yacpdb 2009
145 StrateGems 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Rb4?
      • threat
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Kb8
        • 2.Qxb7#
      • 1...Qxf3
        • 2.Ra5#
      • 1...Qe4
        • 2.Ra5#
        • 2.Qa3#
      • 1...Qc6
        • 2.Ra5#
      • 1...Qd5!
    • 1.Rb5?
      • threat
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Kb8
        • 2.Qxb7#
      • 1...Qxf3
        • 2.Ra4#
      • 1...Qd5
        • 2.Ra4#
        • 2.Qa3#
      • 1...Qc6
        • 2.Ra4#
      • 1...Qe4!
    • 1.Rg7?
      • threat
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Kb8
        • 2.Qxb7#
      • 1...Qe4
        • 2.Rf8#
      • 1...Qd5
        • 2.Rf8#
      • 1...Qc6
        • 2.Rf8#
      • 1...Qxf3!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Kb8
        • 2.Qxb7#
      • 1...Qxf3
        • 2.Rg8#
      • 1...Qe4
        • 2.Rg8#
      • 1...Qd5
        • 2.Rg8#
      • 1...Qc6
        • 2.Rg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(B),XQ(a)
      • Vars
        • K(b);N_SPINQ(a),P-FLIGHT::QAR1(B),XQ(a)
        • K(b);P-FLIGHT::QAR1(B),XQ(a)
        • Q(a);N_SPINQ(a),XQ(B)::R(D)
        • Q(a);::R(D)
      • Refutation
        • Q(a);
    • Try
      • R(D);
      • Threat
        • QAB1(B),XQ(a)
      • Vars
        • K(b);N_SPINQ(a),P-FLIGHT::QAR1(B),XQ(a)
        • K(b);P-FLIGHT::QAR1(B),XQ(a)
        • Q(a);N_SPINQ(a),XQ(B)::R(C)
        • Q(a);::R(C)
      • Refutation
        • Q(a);
    • Try
      • R(D);
      • Threat
        • QAB1(B),XQ(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(B),XQ(a)
        • K(b);N_SPINQ(a),P-FLIGHT::QAR1(B),XQ(a)
        • Q(a);::R(C)
      • Refutation
        • Q(a);N_SPINQ(a),XQ(B)
  • Actual
    • R(C);
    • Threat
      • QAB1(B),XQ(a)
    • Vars
      • K(b);P-FLIGHT::QAR1(B),XQ(a)
      • K(b);N_SPINQ(a),P-FLIGHT::QAR1(B),XQ(a)
      • Q(a);N_SPINQ(a),XQ(B)::R(D)
      • Q(a);::R(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).