MESON Chess Problem Database

Problem Display
PID: 67252 (b1N5/1r1p4/kp1p4/N2Q4/1P6/3r4/8/KR3B2 w - - 0 1)

Subotic, Miroslav

4th HM., Probleemblad, 2006

b1N5/1r1p4/kp1p4/N2Q4/1P6/3r4/8/KR3B2

#2

7 + 7

102 Probleemblad 2010

SOLUTION

  • SOUND
  • Sets
    • 1...bxa5
      • 2.Qxa5#
  • Tries
    • 1.Qxd6?
      • threat
        • 2.Bxd3#
      • 1...Rc7
        • 2.Qxb6#
      • 1...Kb5!
  • Keys
    • 1.Qa2!
      • threat
        • 2.b5#
      • 1...Kb5
        • 2.Bxd3#
      • 1...bxa5
        • 2.Qxa5#
      • 1...b5
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE,XS(E)::QAR1(F),XP(c)
  • Tries
    • Try
      • Q(F);P_PINP(c),XP(d)
      • Threat
        • B(C),XR(a)
      • Vars
        • R(e);N_GUARD::QAR1(F),XP(c)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • P(D)
    • Vars
      • K(b);S_FLIGHT::B(C),XR(a)
      • P(c);OGATE,P_SPINP(c),XS(E)::QAR1(F),XP(c)
      • P(c);N_SPINR(a),SBLOCK::QAR(F)+S(E)
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).