MESON Chess Problem Database

Problem Display
PID: 267956 (8/7q/N4p2/3B1Pn1/R2PpQP1/2k1NP1p/1rp1P3/n1B2K2 w - - 0 1)

Zhuk, Aleksandr Gnatovich

Shakhmatnaya kompozitsiya, 1995

8/7q/N4p2/3B1Pn1/R2PpQP1/2k1NP1p/1rp1P3/n1B2K2

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Qc7#
    • 1...Qg6
      • 2.Qc7#
    • 1...Qg8
      • 2.Qc7#
    • 1...Qh4
      • 2.Qc7#
    • 1...Qh5
      • 2.Qc7#
    • 1...Qh6
      • 2.Qc7#
    • 1...Qc7
      • 2.Qxc7#
    • 1...Qh8
      • 2.Qc7#
    • 1...Rb3
      • 2.Rc4#
    • 1...Sb3
      • 2.Rc4#
    • 1...Sf7
      • 2.Qc7#
  • Tries
    • 1.Sg2?
      • threat
        • 2.Bd2#
        • 2.Qd2#
        • 2.Qe3#
      • 1...Sxf3
        • 2.Qe3#
      • 1...Rb4
        • 2.Qd2#
        • 2.Qe3#
      • 1...Rb1
        • 2.Qd2#
        • 2.Qe3#
      • 1...Ra2
        • 2.Qd2#
        • 2.Qe3#
      • 1...Rb3
        • 2.Rc4#
        • 2.Qd2#
        • 2.Qe3#
      • 1...Rb5
        • 2.Qd2#
        • 2.Qe3#
      • 1...Rb6
        • 2.Qd2#
        • 2.Qe3#
      • 1...Rb7
        • 2.Qd2#
        • 2.Qe3#
      • 1...Rb8
        • 2.Qd2#
        • 2.Qe3#
      • 1...Sb3
        • 2.Rc4#
        • 2.Qe3#
      • 1...e3
        • 2.Qxe3#
      • 1...hxg2+!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qe3#
      • 1...Kb3
        • 2.Ra3#
      • 1...Kxd4
        • 2.Qd2#
      • 1...e3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • Q(i);N_GUARD,XP(K)::QAR(H)
    • Q(i);N_GUARD::QAR(H)
    • Q(i);N_GUARD::QAR(H),XQ(i)
    • R(b);SBLOCK::R1(F)
    • S(a);SBLOCK::R1(F)
    • S(g);S_CUTQ(i)::QAR(H)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • S(g);XP(E)::QAR2(H)
        • P(f);::QAR2(H),XP(f)
      • Refutation
        • P(e);CHECK,XS(D)
  • Actual
    • S(D);
    • Threat
      • QAR2(H)
    • Vars
      • K(d);N_GUARD,P-FLIGHT,S_CUTR(b),S_CUTS(a)::R1(F)
      • K(d);N_GUARD,P_SPINP(f),S_FLIGHT,XP(G)::QAR2(H)
      • P(f);::QAR2(H),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).