MESON Chess Problem Database

Problem Display
PID: 160382 (1Q6/2pk4/B5K1/8/5N1B/8/8/8 w - - 0 1)

Abdullayev, Suleyman

Problemist Ukraini 06. TT, 2012

1Q6/2pk4/B5K1/8/5N1B/8/8/8

#2

5 + 2

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Bb5#
    • 1...c6
      • 2.Qd8#
  • Tries
    • 1.Bb5+?
      • 1...c6
        • 2.Qd8#
      • 1...Kd6!
    • 1.Qxc7+?
      • 1...Ke8
        • 2.Qd8#
        • 2.Qe7#
        • 2.Qf7#
        • 2.Qc8#
      • 1...Kxc7!
    • 1.Qb5+?
      • 1...Kd6
        • 2.Qd5#
      • 1...c6!
    • 1.Qa8?
      • 1...Kd6
        • 2.Qd5#
      • 1...c6
        • 2.Qd8#
      • 1...c5!
  • Keys
    • 1.Qb7!
      • 1...Kd6
        • 2.Qd5#
      • 1...Ke8
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(a);N_GUARD::B(C)
    • P(a);SBLOCK::QAR1(E)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • P(a);P_SPINP(a)::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
    • Try
      • Q(E);CHECK,XP(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • Q(E);
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • P(a);
  • Actual
    • Q(E);P_PINP(a)
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT::QAR1(E)
      • K(b);N_SPINP(a),S_FLIGHT::QAR2(E)
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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).