MESON Chess Problem Database

Problem Display
PID: 274602 (7B/KR1N1Pr1/4p3/2p3Rq/N1k1B1n1/2P5/2p2r2/4n1Q1 w - - 0 1)

Tanic, Zivota

Mat, 1973

7B/KR1N1Pr1/4p3/2p3Rq/N1k1B1n1/2P5/2p2r2/4n1Q1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qg6
      • 2.Rxc5#
    • 1...Qxf7
      • 2.Rxc5#
    • 1...Qh1
      • 2.Rxc5#
    • 1...Qh2
      • 2.Rxc5#
    • 1...Qh3
      • 2.Rxc5#
    • 1...Qh4
      • 2.Rxc5#
    • 1...Qh6
      • 2.Rxc5#
    • 1...Qh7
      • 2.Rxc5#
    • 1...Qxh8
      • 2.Rxc5#
    • 1...Rf1
      • 2.Qxc5#
    • 1...Rd2
      • 2.Qxc5#
    • 1...Re2
      • 2.Qxc5#
    • 1...Rg2
      • 2.Qxc5#
    • 1...Rh2
      • 2.Qxc5#
    • 1...Rf3
      • 2.Qxc5#
    • 1...Rf4
      • 2.Qxc5#
    • 1...Rf6
      • 2.Qxc5#
    • 1...Rfxf7
      • 2.Qxc5#
    • 1...Rxg5
      • 2.Sb2#
    • 1...Rg6
      • 2.Sb2#
    • 1...Rgxf7
      • 2.Sb2#
    • 1...Rh7
      • 2.Sb2#
    • 1...Rg8
      • 2.Sb2#
    • 1...Sh2
      • 2.Se5#
    • 1...Se3
      • 2.Se5#
    • 1...Se5
      • 2.Sxe5#
    • 1...Sf6
      • 2.Se5#
    • 1...Sh6
      • 2.Se5#
  • Tries
    • 1.Sdxc5?
      • threat
        • 2.Rb4#
      • 1...Rfxf7
        • 2.Qd4#
      • 1...Rgxf7
        • 2.Sb2#
      • 1...Sd3
        • 2.Bxd3#
      • 1...Qxf7!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Sdb6#
      • 1...Qxf7
        • 2.Rxc5#
      • 1...Rfxf7
        • 2.Qxc5#
      • 1...Rgxf7
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 25
  • Sets
    • Q(g);N_GUARD::R1(E),XP(f)
    • Q(g);N_GUARD,XP(I)::R1(E),XP(f)
    • Q(g);N_GUARD,XB(J)::R1(E),XP(f)
    • R(c);OGATE::QAR1(A),XP(f)
    • R(c);OGATE,XP(I)::QAR1(A),XP(f)
    • R(i);XR(E)::S(C)
    • R(i);::S(C)
    • R(i);XP(I)::S(C)
    • S(e);N_GUARD::S(H)
    • S(e);N_GUARD::S(H),XS(e)
  • Tries
    • Try
      • S(H);XP(f)
      • Threat
        • R1(G)
      • Vars
        • R(c);OGATE,P_PINR(G),XP(I)::QAR1(A)
        • R(i);P_PINR(G),XP(I)::S(C)
        • S(a);N_GUARD::B(D),XS(a)
      • Refutation
        • Q(g);P_PINR(G),XP(I)
  • Actual
    • R(G);
    • Threat
      • S(H)
    • Vars
      • Q(g);N_GUARD,P_PINS(H),XP(I)::R1(E),XP(f)
      • R(c);OGATE,P_PINS(H),XP(I)::QAR1(A),XP(f)
      • R(i);P_PINS(H),XP(I)::S(C)
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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).