MESON Chess Problem Database

Problem Display
PID: 104355 (8/1Q1p4/8/4r3/2k5/BN2n3/N1B1P3/1K2nb2 w - - 0 1)

Joksimovic, Nebojsa

Bilten, 2002

8/1Q1p4/8/4r3/2k5/BN2n3/N1B1P3/1K2nb2

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Qe4#
    • 1...Rd5
      • 2.Qb4#
    • 1...S1g2
      • 2.Bd3#
    • 1...Sd3
      • 2.Bxd3#
    • 1...Sf3
      • 2.Bd3#
    • 1...Sd5
      • 2.Qa6#
    • 1...d5
      • 2.Qa6#
      • 2.Qc6#
      • 2.Qb4#
  • Tries
    • 1.Qa6+?
      • 1...Kd5
        • 2.Sc3#
        • 2.Sb4#
      • 1...Rb5!
    • 1.Qc6+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...dxc6!
  • Keys
    • 1.Qxd7!
      • threat
        • 2.Sd2#
      • 1...Rb5
        • 2.Qd4#
      • 1...Rd5
        • 2.Qa4#
      • 1...Sf3
        • 2.Qd3#
      • 1...Sd5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD,P_PINS(F),SBLOCK::QAR2(G)
    • R(e);SBLOCK::QAR1(G)
    • S(a);N_GUARD::B(C)
    • S(a);N_GUARD::B(C),XS(a)
    • S(c);SBLOCK,S_CUTR(e)::QAB(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Refutation
        • R(e);P_PINS(F),P_SPINR(e)
    • Try
      • Q(G);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAR1(G),XR(e)
      • Refutation
        • P(f);XQ(G)
  • Actual
    • Q(G);XP(f)
    • Threat
      • S(F)
    • Vars
      • R(e);P_PINS(F),SBLOCK::QAR1(G)
      • R(e);SBLOCK::QAR2(G)
      • S(a);N_GUARD::QAB1(G)
      • S(c);S_CUTR(e)::QAR2(G)
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).