MESON Chess Problem Database

Problem Display
PID: 158105 (3Q4/8/p7/8/BN2K3/8/1k1N4/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Sa ogneupory, 1986

3Q4/8/p7/8/BN2K3/8/1k1N4/8

#2

5 + 2

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Ka1
      • 2.Qf6#
      • 2.Qd4#
      • 2.Qh8#
    • 1...Kc3
      • 2.Qd4#
  • Tries
    • 1.Sc4+?
      • 1...Ka1
        • 2.Qd1#
      • 1...Kb1
        • 2.Qd1#
      • 1...Kc1
        • 2.Qd1#
      • 1...Kc3!
    • 1.Qf6+?
      • 1...Kc1
        • 2.Qc3#
      • 1...Ka3!
    • 1.Qd3?
      • 1...Ka1
        • 2.Qb1#
        • 2.Qa3#
        • 2.Qc3#
        • 2.Qd4#
      • 1...Kc1
        • 2.Qc2#
        • 2.Qc3#
      • 1...a5!
    • 1.Qd4+?
      • 1...Kc1
        • 2.Sa2#
        • 2.Qc3#
      • 1...Ka3!
    • 1.Qh8+?
      • 1...Kc1
        • 2.Qc3#
      • 1...Ka3!
  • Keys
    • 1.Qa5!
      • 1...Ka1
        • 2.Qe5#
      • 1...Kc1
        • 2.Sd3#
      • 1...Ka3
        • 2.Sc4#
      • 1...Kc3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(E)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR(E)
        • K(a);P-FLIGHT::QAR2(E)
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB(E)
      • K(a);S_FLIGHT::S(C)
      • K(a);S_FLIGHT::S(A)
      • K(a);S_FLIGHT::QAB(E)+S(C)
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).