MESON Chess Problem Database

Problem Display
PID: 168561 (6R1/Q7/2k5/4K3/4n3/5B2/8/8 w - - 0 1)

Aliovsadzade, Rauf Gadzhiaga ogli

StrateGems, 2017

6R1/Q7/2k5/4K3/4n3/5B2/8/8

#2

4 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Kxe4?
      • 1...Kd6
        • 2.Rg6#
      • 1...Kb5!
    • 1.Qb6+?
      • 1...Kd7
        • 2.Qb7#
      • 1...Kxb6!
    • 1.Qa5?
      • 1...Kb7
        • 2.Bxe4#
      • 1...Kd7!
    • 1.Qb7+?
      • 1...Kc5
        • 2.Rc8#
      • 1...Kxb7!
  • Keys
    • 1.Qb8!
      • 1...Kc5
        • 2.Rc8#
      • 1...Kd7
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT,XS(a)
      • Vars
        • K(b);P-FLIGHT::R(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::B(A),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::R(D)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(b);N_SPINS(a),P-FLIGHT::R(D)
      • K(b);N_SPINS(a),S_FLIGHT::QAR2(C)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).