MESON Chess Problem Database

Problem Display
PID: 240157 (1K2B3/4p3/1NP1n3/2p2p2/Rb1nkP2/1p1R2P1/1Np1Pp1r/2r2Q2 w - - 0 1)

Zilahi, Zoltan

Freie Presse, 1970

1K2B3/4p3/1NP1n3/2p2p2/Rb1nkP2/1p1R2P1/1Np1Pp1r/2r2Q2

#2

11 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe2
      • 2.Qxe2#
    • 1...Sf3
      • 2.exf3#
    • 1...Sxc6+
      • 2.Bxc6#
  • Tries
    • 1.Qg2+?
      • 1...Sf3
        • 2.Qxf3#
        • 2.exf3#
      • 1...Rxg2!
    • 1.Qxf2?
      • threat
        • 2.Re3#
        • 2.Qe3#
      • 1...Sxc6+
        • 2.Bxc6#
      • 1...Sxe2
        • 2.Qe3#
        • 2.Qf3#
      • 1...Bd2
        • 2.Qf3#
      • 1...Sf3
        • 2.Qe3#
        • 2.Qxf3#
        • 2.exf3#
      • 1...Sb5
        • 2.Qe3#
        • 2.Qf3#
      • 1...Rxf2!
  • Keys
    • 1.S2c4!
      • threat
        • 2.Re3#
      • 1...Sxc6+
        • 2.Bxc6#
      • 1...Sxe2
        • 2.Qxe2#
      • 1...Bd2
        • 2.Sxd2#
      • 1...Sf3
        • 2.exf3#
      • 1...Sb5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(g);OGATE,P_SPINB(f),XP(C)::QAR2(A),XS(g)
    • S(g);OGATE,P_SPINB(f)::P(C),XS(g)
    • S(g);CHECK,OGATE,P_SPINB(f),XP(I)::B(K),XS(g)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • R(d);XQ(A)
    • Try
      • Q(A);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(g);CHECK,OGATE,P_SPINB(f),XP(I)::B(K),XS(g)
        • B(f);P_SPINS(g)::QAB1(A)
      • Refutation
        • R(d);XQ(A)
  • Actual
    • S(B);
    • Threat
      • R1(D)
    • Vars
      • S(g);CHECK,OGATE,XP(I)::B(K),XS(g)
      • S(g);OGATE,XP(C)::QAR2(A),XS(g)
      • B(f);N_GUARD::S(B),XB(f)
      • S(g);OGATE::P(C),XS(g)
      • S(g);S_CUTB(f)::S(B)
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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).