MESON Chess Problem Database

Problem Display
PID: 205469 (8/8/8/8/2Q5/p7/8/knK1B3 w - - 0 1)

Abdullayev, Suleyman

ChessStar, 2017

8/8/8/8/2Q5/p7/8/knK1B3

#2

3 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Bxc3#
  • Tries
    • 1.Bb4?
      • 1...Sd2
        • 2.Bc3#
      • 1...Sc3
        • 2.Bxc3#
      • 1...a2!
    • 1.Ba5?
      • 1...Sd2
        • 2.Bc3#
      • 1...Sc3
        • 2.Bxc3#
      • 1...a2!
    • 1.Qe2?
      • 1...a2
        • 2.Qb2#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Sd2!
    • 1.Qc2?
      • threat
        • 2.Qxb1#
      • 1...a2
        • 2.Qb2#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Sd2!
    • 1.Qb4?
      • threat
        • 2.Qxb1#
      • 1...Ka2
        • 2.Qxb1#
      • 1...a2
        • 2.Qb2#
      • 1...Sd2
        • 2.Qxa3#
      • 1...Sc3!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qxb1#
      • 1...a2
        • 2.Qb2#
      • 1...Sd2
        • 2.Qxa3#
      • 1...Sc3
        • 2.Bxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::B(B),XS(b)
  • Tries
    • Try
      • B(B);
      • Vars
        • S(b);N_GUARD::B(B)
        • S(b);N_GUARD::B(B),XS(b)
      • Refutation
        • P(c);
    • Try
      • B(B);
      • Vars
        • S(b);N_GUARD::B(B)
        • S(b);N_GUARD::B(B),XS(b)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Vars
        • P(c);N_GUARD::QAB1(C)
        • S(b);N_GUARD::B(B),XS(b)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XS(b)
      • Vars
        • P(c);N_GUARD::QAB1(C)
        • S(b);N_GUARD::B(B),XS(b)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XS(b)
      • Vars
        • K(a);P-FLIGHT::QAB1(C),XS(b)
        • P(c);N_GUARD::QAB1(C)
        • S(b);N_GUARD::QAR2(C),XP(c)
      • Refutation
        • S(b);
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XS(b)
    • Vars
      • P(c);N_GUARD::QAB1(C)
      • S(b);N_GUARD::QAR2(C),XP(c)
      • S(b);N_GUARD::B(B),XS(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).