MESON Chess Problem Database

Problem Display
PID: 135530 (k7/1p6/8/Kp6/5Bp1/5Q2/8/8 w - - 0 1)

Novik, N

Comm., Cherkasski krai, 1998

k7/1p6/8/Kp6/5Bp1/5Q2/8/8

#2

3 + 4

145 StrateGems 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kxb5?
      • threat
        • 2.Qa3#
      • 1...Ka7
        • 2.Qa3#
      • 1...gxf3!
    • 1.Kb6?
      • threat
        • 2.Qxb7#
        • 2.Qa3#
      • 1...b4
        • 2.Qxb7#
      • 1...gxf3!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Kb4#
        • 2.Kxb5#
        • 2.Kb6#
      • 1...b6+
        • 2.Kxb6#
      • 1...Ka7
        • 2.Kxb5#
      • 1...b4
        • 2.Kxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);P-FLIGHT,XP(b)
      • Threat
        • QAR(A)
      • Vars
        • K(d);N_SPINP(c),P-FLIGHT::QAR(A)
      • Refutation
        • P(a);N_SPINP(c),XQ(A)
    • Try
      • K(C);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAB1(A),XP(c)
      • Refutation
        • P(a);N_SPINP(c),XQ(A)
  • Actual
    • Q(A);N_PINP(c)
    • Threat
      • DUALS(3)
    • Vars
      • P(c);CHECK::QAR(A)+K(C),XP(c)
      • K(d);P-FLIGHT::QAR(A)+K(C),XP(b)
      • P(b);::QAR(A)+K(C),XP(b)
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).