MESON Chess Problem Database

Problem Display
PID: 276650 (K7/N4ppB/k7/2Pp4/1P5p/2pNRR2/3b4/1nQ4q w - - 0 1)

Radovic, Srecko

Tarnawiecki, Antonio

Best Problems, 2023

K7/N4ppB/k7/2Pp4/1P5p/2pNRR2/3b4/1nQ4q

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Qxa3#
    • 1...f5
      • 2.Re6#
    • 1...f6
      • 2.Re6#
    • 1...g5
      • 2.Rf6#
    • 1...g6
      • 2.Rf6#
  • Tries
    • 1.Se1?
      • threat
        • 2.Bd3#
      • 1...Sa3
        • 2.Qxa3#
      • 1...f5
        • 2.Re6#
      • 1...g6
        • 2.Rf6#
      • 1...Qf1!
    • 1.Sb2?
      • threat
        • 2.Bd3#
      • 1...Qf1
        • 2.Qxf1#
      • 1...f5
        • 2.Re6#
      • 1...g6
        • 2.Rf6#
      • 1...Sa3!
    • 1.Sf4?
      • threat
        • 2.Bd3#
      • 1...Qf1
        • 2.Qxf1#
      • 1...Sa3
        • 2.Qxa3#
      • 1...f5
        • 2.Re6#
      • 1...g6!
    • 1.Se5?
      • threat
        • 2.Bd3#
      • 1...Qf1
        • 2.Qxf1#
      • 1...Sa3
        • 2.Qxa3#
      • 1...g6
        • 2.Rf6#
      • 1...f5!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Bd3#
      • 1...Qf1
        • 2.Qxf1#
      • 1...Sa3
        • 2.Qxa3#
      • 1...f5
        • 2.Re6#
      • 1...g6
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAR(A),XS(a)
    • P(h);N_GUARD::R(C)
    • P(i);N_GUARD::R(D)
  • Tries
    • Try
      • S(B);
      • Threat
        • B(H)
      • Vars
        • S(a);N_GUARD::QAR(A),XS(a)
        • P(h);N_GUARD::R(C)
        • P(i);N_GUARD::R(D)
      • Refutation
        • Q(b);
    • Try
      • S(B);
      • Threat
        • B(H)
      • Vars
        • Q(b);N_GUARD::QAB(A),XQ(b)
        • P(h);N_GUARD::R(C)
        • P(i);N_GUARD::R(D)
      • Refutation
        • S(a);
    • Try
      • S(B);
      • Threat
        • B(H)
      • Vars
        • Q(b);N_GUARD::QAB(A),XQ(b)
        • S(a);N_GUARD::QAR(A),XS(a)
        • P(h);N_GUARD::R(C)
      • Refutation
        • P(i);
    • Try
      • S(B);
      • Threat
        • B(H)
      • Vars
        • Q(b);N_GUARD::QAB(A),XQ(b)
        • S(a);N_GUARD::QAR(A),XS(a)
        • P(i);N_GUARD::R(D)
      • Refutation
        • P(h);
  • Actual
    • S(B);
    • Threat
      • B(H)
    • Vars
      • Q(b);N_GUARD::QAB(A),XQ(b)
      • S(a);N_GUARD::QAR(A),XS(a)
      • P(h);N_GUARD::R(C)
      • P(i);N_GUARD::R(D)
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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).