MESON Chess Problem Database

Problem Display
PID: 244330 (8/8/4p3/R2n2K1/3k4/8/5N2/2Q5 w - - 0 1)

Antipov, Viacheslav Pavlovich

The Problemist, 1989

8/8/4p3/R2n2K1/3k4/8/5N2/2Q5

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf4#
    • 1...Se3
      • 2.Qc5#
    • 1...Sb4
      • 2.Qc5#
    • 1...Sf4
      • 2.Qc5#
    • 1...Sb6
      • 2.Qc5#
    • 1...Sf6
      • 2.Qc5#
    • 1...Sc7
      • 2.Qc5#
    • 1...Se7
      • 2.Qc5#
    • 1...e5
      • 2.Qc5#
  • Tries
    • 1.Rb5?
      • 1...Ke5
        • 2.Qf4#
      • 1...Se3
        • 2.Qc5#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sf4
        • 2.Qc5#
      • 1...Sb6
        • 2.Qc5#
      • 1...Sf6
        • 2.Qc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Se7
        • 2.Qc5#
      • 1...e5
        • 2.Qc5#
      • 1...Sc3!
    • 1.Qd2+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Kc4!
  • Keys
    • 1.Rc5!
      • 1...Ke5
        • 2.Qf4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...Sf4
        • 2.Qc3#
      • 1...Sb6
        • 2.Qc3#
      • 1...Sf6
        • 2.Qc3#
      • 1...Sc7
        • 2.Qc3#
      • 1...Se7
        • 2.Qc3#
      • 1...e5
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 8
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINS(b),S_FLIGHT::QAB1(A)
    • S(b);SBLOCK::QAB1(A)
    • S(b);::QAB1(A)
    • P(c);SBLOCK::QAB1(A)
  • Tries
    • Try
      • R(C);
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::QAB1(A)
        • S(b);SBLOCK::QAB1(A)
        • S(b);::QAB1(A)
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);P_SPINS(b),S_FLIGHT::QAB1(A)
      • S(b);N_GUARD::QAB1(A),XS(b)
      • S(b);N_GUARD::QAB1(A)
      • P(c);SBLOCK::R1(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).