MESON Chess Problem Database

Problem Display
PID: 7278 (N5K1/1B1p4/pR6/k3BN1R/2p5/pqP5/1pQ5/8 w - - 0 1)

Velimirovic, Milan

2nd Comm., Netanya (Internet), 1999

N5K1/1B1p4/pR6/k3BN1R/2p5/pqP5/1pQ5/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc3
      • 2.Bxc3#
    • 1...Qb4
      • 2.cxb4#
  • Tries
    • 1.Qxb3?
      • threat
        • 2.Rxa6#
        • 2.Qxa3#
        • 2.Qb4#
      • 1...b1Q
        • 2.Rxa6#
        • 2.Qxa3#
      • 1...b1S
        • 2.Rxa6#
        • 2.Qb4#
      • 1...b1R
        • 2.Rxa6#
        • 2.Qxa3#
      • 1...a2
        • 2.Rxa6#
        • 2.Qxa2#
        • 2.Qa3#
        • 2.Qb4#
      • 1...cxb3!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Rb4#
      • 1...Ka4
        • 2.Rb4#
      • 1...Qxc3
        • 2.Rxb2#
      • 1...Qxb6
        • 2.Sd6#
      • 1...Qb5
        • 2.Rxa6#
      • 1...Qb4
        • 2.Rxb4#
        • 2.cxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(c);OGATE,XP(B)::B(C),XQ(c)
    • Q(c);OGATE::P(B),XQ(c)
  • Tries
    • Try
      • Q(A);XQ(c)
      • Threat
        • DUALS(3)
      • Refutation
        • P(d);XQ(A)
  • Actual
    • B(C);
    • Threat
      • B(C)+R(F)
    • Vars
      • K(e);P-FLIGHT,P_SPINQ(c)::R1(F)
      • Q(c);OGATE,XP(B)::B(C)+R(F),XP(a)
      • Q(c);N_GUARD,P_SPINQ(c),XR(F)::R(E)+S(D)
      • Q(c);SBLOCK::B(C)+R(F),DCHECK,XP(f)
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).