MESON Chess Problem Database

Problem Display
PID: 245219 (8/B7/r2p3Q/1R2b2P/R2Pk3/4Npp1/1KP2q2/1B6 w - - 0 1)

Zilahi, Zoltan

Prize=, Schackvarlden, 1933

8/B7/r2p3Q/1R2b2P/R2Pk3/4Npp1/1KP2q2/1B6

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc2+
      • 2.Bxc2#
    • 1...Rb6
      • 2.dxe5#
    • 1...Bxd4+
      • 2.Rxd4#
  • Tries
    • 1.Qg6+?
      • 1...Kf4
        • 2.Sd5#
      • 1...Kxe3!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qg6#
        • 2.Qh7#
      • 1...Qxd4+
        • 2.c3#
      • 1...Qxc2+
        • 2.Bxc2#
      • 1...Bxd4+
        • 2.Sc3#
      • 1...Kf5
        • 2.Qg6#
      • 1...Rxa7
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(a);CHECK,OGATE,P_PINP(F),P_SPINQ(a),XP(C)::B(A),XQ(a)
    • R(f);N_GUARD,P_PINR(G)::R(E)+P(F),XB(e)
    • B(e);CHECK,OGATE,P_SPINB(e),XP(F)::R1(E),XB(e)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);P-FLIGHT::S(D)
      • Refutation
        • K(d);P-FLIGHT,XS(D)
  • Actual
    • S(D);
    • Threat
      • DUALS(2)
    • Vars
      • Q(a);CHECK,N_PINP(C),P_SPINQ(a),XP(F)::B(A)+P(C)
      • Q(a);CHECK,OGATE,P_PINP(F),P_SPINQ(a),XP(C)::B(A),XQ(a)
      • B(e);CHECK,P_SPINB(e),XP(F)::S(D)
      • K(d);S_FLIGHT::QAB1(I)
      • R(f);XB(J)::QAB(I)
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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).