MESON Chess Problem Database

Problem Display
PID: 6745 (8/1K6/Q4Pp1/N2Pk1n1/1R2P1p1/2P2r2/1Br1N3/1B3R2 w - - 0 1)

Gray, Robert

Glasgow Herald, 1933

8/1K6/Q4Pp1/N2Pk1n1/1R2P1p1/2P2r2/1Br1N3/1B3R2

#2

12 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Sc4#
    • 1...Rxb2
      • 2.Sc4#
    • 1...Rd2
      • 2.Sc4#
    • 1...Rcxc3
      • 2.Sc4#
    • 1...Rxf6
      • 2.Qxf6#
    • 1...Sh3
      • 2.Qe6#
    • 1...Sxe4
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sf7
      • 2.Qe6#
    • 1...Sh7
      • 2.Qe6#
  • Tries
    • 1.Bxc2?
      • threat
        • 2.Sc4#
      • 1...Sxe4
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Rd3!
  • Keys
    • 1.Kc7!
      • threat
        • 2.Qd6#
      • 1...Rcxc3+
        • 2.Sc4#
      • 1...Rfxc3+
        • 2.Sc6#
      • 1...Se6+
        • 2.Qxe6#
      • 1...Rxf6
        • 2.Qxf6#
      • 1...Sxe4
        • 2.Qe6#
      • 1...Sf7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(a);::S(H)
    • R(a);P_PINR(F),XB(C)::S(H)
    • R(a);P_SPINR(a),XP(E)::S(H)
    • R(b);OGATE,XP(K)::QAB1(J),XR(b)
    • S(e);N_GUARD::QAR1(J)
    • S(e);N_GUARD,XP(G)::QAR1(J)
    • S(e);N_GUARD::QAR1(J),XS(e)
  • Tries
    • Try
      • B(A);XR(a)
      • Threat
        • S(H)
      • Vars
        • S(e);N_GUARD,XP(G)::QAR1(J)
        • S(e);N_GUARD::QAR1(J),XS(e)
      • Refutation
        • R(b);
  • Actual
    • K(L);P-FLIGHT,P_SPINP(E)
    • Threat
      • QAB1(J)
    • Vars
      • R(a);CHECK,P_SPINR(a),XP(E)::S(H)
      • R(b);CHECK,P_SPINR(b),XP(E)::S(H)
      • S(e);CHECK,N_GUARD::QAR1(J),XS(e)
      • R(b);OGATE,XP(K)::QAB1(J),XR(b)
      • S(e);N_GUARD,XP(G)::QAR1(J)
      • S(e);N_GUARD::QAR1(J)
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).