MESON Chess Problem Database

Problem Display
PID: 166437 (8/3p4/4p3/1K2k3/5R2/6P1/6Q1/8 w - - 0 1)

Abdullayev, Elmar

Sachove umeni (Ceskoslovensky sach), 2016

8/3p4/4p3/1K2k3/5R2/6P1/6Q1/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Qe4#
  • Tries
    • 1.Kc5?
      • threat
        • 2.Qe4#
        • 2.Qb2#
        • 2.Qe2#
      • 1...d5
        • 2.Qe2#
      • 1...d6+!
    • 1.Qc6?
      • 1...d5
        • 2.Qc7#
      • 1...d6
        • 2.Qe4#
      • 1...dxc6+!
    • 1.Qb7?
      • 1...d5
        • 2.Qc7#
        • 2.Qb8#
      • 1...d6
        • 2.Qe4#
      • 1...Kd6!
    • 1.Qa8?
      • 1...d5
        • 2.Qb8#
      • 1...d6
        • 2.Qe4#
      • 1...Kd6!
    • 1.Qg1?
      • threat
        • 2.Qd4#
      • 1...Kd5
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...d5!
    • 1.Qb2+?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kd6!
    • 1.Qf2?
      • threat
        • 2.Qd4#
      • 1...Kd5
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...d5!
  • Keys
    • 1.Qc2!
      • 1...Kd5
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...d5
        • 2.Qc7#
      • 1...d6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR1(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • P(c);::QAR(A)
      • Refutation
        • P(c);CHECK
    • Try
      • Q(A);
      • Vars
        • P(c);N_GUARD,SBLOCK::QAB(A)
        • P(c);SBLOCK::QAR1(A)
      • Refutation
        • P(c);CHECK,XQ(A)
    • Try
      • Q(A);
      • Vars
        • P(c);SBLOCK::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(c);N_GUARD,SBLOCK::QAB(A)
        • P(c);SBLOCK::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAB1(A)
      • P(c);N_GUARD,SBLOCK::QAB(A)
      • P(c);SBLOCK::QAR1(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).