MESON Chess Problem Database

Problem Display
PID: 174054 (1B2Rb2/3PnP1B/KN1Prp1R/2P1k3/1N1r2P1/p3P3/1n6/Q7 w - - 0 1)

Stan, Mihail

Parallele 50, 1947

1B2Rb2/3PnP1B/KN1Prp1R/2P1k3/1N1r2P1/p3P3/1n6/Q7

#2

14 + 8

15202 Componist 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sc4#
    • 1...Rd2
      • 2.Sc4#
    • 1...Rd3
      • 2.Sxd3#
      • 2.Sc4#
    • 1...Rc4
      • 2.Sd3#
      • 2.Sxc4#
    • 1...Re4
      • 2.Sd3#
    • 1...Rf4
      • 2.Sd3#
    • 1...Rxg4
      • 2.Sd3#
    • 1...Rd5
      • 2.Sc4#
    • 1...Rdxd6
      • 2.Sd3#
    • 1...Sd1
      • 2.Sd3#
      • 2.Sc4#
      • 2.Qxd4#
    • 1...Sd3
      • 2.Sxd3#
      • 2.Sc4#
      • 2.Qxd4#
    • 1...Sa4
      • 2.Sd3#
      • 2.Sc4#
      • 2.Qxd4#
    • 1...Sc4
      • 2.Sd3#
      • 2.Sxc4#
      • 2.Qxd4#
    • 1...Sd5
      • 2.Sc6#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sc8
      • 2.Sc6#
    • 1...Sg8
      • 2.Sc6#
  • Tries
    • 1.Sd3+?
      • 1...Sxd3
        • 2.Qxd4#
      • 1...Rxd3!
    • 1.Sc4+?
      • 1...Sxc4
        • 2.Qxd4#
      • 1...Rxc4!
    • 1.d8S?
      • threat
        • 2.Sd7#
      • 1...Rdxd6
        • 2.Sd3#
      • 1...Rexd6
        • 2.Sbc6#
      • 1...Sf5
        • 2.Rxe6#
      • 1...Sg6
        • 2.Rxe6#
      • 1...f5
        • 2.Rxe6#
      • 1...Rxb4!
  • Keys
    • 1.dxe7+!
      • 1...Rdd6
        • 2.Sd3#
        • 2.Sc6#
      • 1...Red6
        • 2.exf8Q#
        • 2.exf8S#
        • 2.exf8B#
        • 2.exf8R#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • R(c);N_GUARD,P_SPINS(a)::S(G)
    • R(c);N_GUARD,P_SPINS(a)::S(C)
    • R(c);N_GUARD,P_SPINS(a),XP(D)::S(C)
    • R(c);N_GUARD,P_PINS(G),P_SPINR(c),P_SPINS(a),XP(H)::S(C)
    • S(g);N_GUARD,P_SPINR(e)::S(C)
    • S(g);N_GUARD,P_SPINR(e)::S(C),XS(g)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(a);OGATE,P_SPINR(c),XS(C)::QAB1(A),XR(c)
      • Refutation
        • R(c);P_SPINS(a),XS(C)
    • Try
      • S(G);CHECK,P_SPINP(H)
      • Vars
        • S(a);OGATE,P_SPINR(c),XS(G)::QAB1(A),XR(c)
      • Refutation
        • R(c);P_SPINS(a),XS(G)
    • Try
      • P(J);
      • Threat
        • S(G)
      • Vars
        • R(c);N_GUARD,P_PINS(G),P_SPINR(c),P_SPINS(a),XP(H)::S(C)
        • R(e);P_PINS(G),P_SPINR(e),P_SPINS(g),XP(H)::S(C)
        • S(g);OGATE,P_SPINR(e)::R1(N),XR(e)
        • P(f);OGATE::R1(I),XR(e)
      • Refutation
        • R(c);P_SPINS(a),XS(C)
  • Actual
    • P(H);CHECK,P_SPINS(G),XS(g)
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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).