MESON Chess Problem Database

Problem Display
PID: 183690 (8/8/7n/4Q2B/7k/8/6K1/8 w - - 0 1)

Pavlenko, Ksenia

Kudesnik, 2018

8/8/7n/4Q2B/7k/8/6K1/8

#2

3 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Bd1?
      • threat
        • 2.Qg3#
        • 2.Qf6#
        • 2.Qh5#
        • 2.Qe7#
      • 1...Sf5
        • 2.Qf4#
        • 2.Qf6#
      • 1...Sf7
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qh5#
      • 1...Sg8
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qh5#
      • 1...Sg4!
    • 1.Be2?
      • threat
        • 2.Qg3#
        • 2.Qf6#
        • 2.Qh5#
        • 2.Qe7#
      • 1...Sf5
        • 2.Qf4#
        • 2.Qf6#
      • 1...Sf7
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qh5#
      • 1...Sg8
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qh5#
      • 1...Sg4!
    • 1.Bf3?
      • threat
        • 2.Qg3#
        • 2.Qf6#
        • 2.Qh5#
        • 2.Qe7#
      • 1...Sf5
        • 2.Qf4#
        • 2.Qf6#
      • 1...Sf7
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qh5#
      • 1...Sg8
        • 2.Qg3#
        • 2.Qf4#
        • 2.Qh5#
      • 1...Sg4!
    • 1.Qf4+?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Kxh5!
    • 1.Qg7?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf5
        • 2.Qg4#
      • 1...Sf7
        • 2.Qg4#
      • 1...Sg8
        • 2.Qg4#
      • 1...Kxh5!
    • 1.Qe2?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf5
        • 2.Qg4#
      • 1...Sf7
        • 2.Qg4#
      • 1...Sg8
        • 2.Qg4#
      • 1...Kg5!
    • 1.Qf5?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf7
        • 2.Qg4#
      • 1...Sg8
        • 2.Qg4#
      • 1...Sxf5!
  • Keys
    • 1.Bg6!
      • threat
        • 2.Qg3#
        • 2.Qh5#
      • 1...Kg4
        • 2.Qg3#
      • 1...Sf5
        • 2.Qf4#
      • 1...Sg4
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(4)
      • Refutation
        • S(b);
    • Try
      • B(C);
      • Threat
        • DUALS(4)
      • Refutation
        • S(b);
    • Try
      • B(C);
      • Threat
        • DUALS(4)
      • Refutation
        • S(b);
    • Try
      • Q(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(B),XS(b)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(B);
      • Vars
        • S(b);N_GUARD::QAR1(B),XS(b)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(B);
      • Vars
        • S(b);N_GUARD::QAR1(B),XS(b)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • S(b);N_GUARD::QAR1(B),XS(b)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • S(b);XQ(B)
  • Actual
    • B(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • S(b);N_GUARD::QAR2(B)
      • S(b);::QAR1(B)
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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).