MESON Chess Problem Database

Problem Display
PID: 235729 (4rn2/1p6/1Q4pN/2Pp2p1/r3kpN1/p1p5/2K5/3R1R2 w - - 0 1)

Stojnic, Dragan

Zadachi i Etyudi, 2002

4rn2/1p6/1Q4pN/2Pp2p1/r3kpN1/p1p5/2K5/3R1R2

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rde1#
    • 1...Sd7
      • 2.Qxg6#
    • 1...Sh7
      • 2.Qxg6#
    • 1...d4
      • 2.Qxb7#
  • Tries
    • 1.Sf6+?
      • 1...Ke5
        • 2.Rxd5#
        • 2.Qd6#
      • 1...Ke3!
    • 1.Rd3?
      • threat
        • 2.Re1#
      • 1...d4
        • 2.Qxb7#
      • 1...f3!
    • 1.Qb4+?
      • 1...d4
        • 2.Rxd4#
        • 2.Qxb7#
      • 1...Rxb4!
    • 1.Qf6?
      • threat
        • 2.Rde1#
      • 1...Re5
        • 2.Qxe5#
      • 1...d4!
    • 1.c6?
      • threat
        • 2.Rde1#
      • 1...f3
        • 2.Qe3#
      • 1...d4!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qxd5#
      • 1...Rd4
        • 2.Rde1#
      • 1...Re5
        • 2.Qxe5#
      • 1...Rd8
        • 2.Qe5#
      • 1...f3
        • 2.Rfe1#
      • 1...d4
        • 2.Rde1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(c);SBLOCK::R(A)
    • S(k);N_GUARD::QAB(F),XP(h)
    • P(f);OGATEB::QAB(F),XP(i)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • R(A);
      • Threat
        • R(B)
      • Vars
        • P(f);OGATEB::QAB(F),XP(i)
      • Refutation
        • P(e);
    • Try
      • Q(F);CHECK
      • Refutation
        • R(c);XQ(F)
    • Try
      • Q(F);
      • Threat
        • R(A)
      • Vars
        • R(j);N_GUARD::QAR1(F),XR(j)
      • Refutation
        • P(f);
    • Try
      • P(E);
      • Threat
        • R(A)
      • Vars
        • P(e);N_GUARD::QAR1(F)
      • Refutation
        • P(f);
  • Actual
    • Q(F);
    • Threat
      • QAB1(F),XP(f)
    • Vars
      • R(c);SBLOCK::R(A)
      • R(j);N_GUARD::QAR1(F),XR(j)
      • R(j);N_GUARD::QAR1(F)
      • P(e);SBLOCK::R(B)
      • P(f);::R(A)
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).