MESON Chess Problem Database

Problem Display
PID: 240140 (5R1q/2P4p/3P1bpN/3b2pP/Q1n1nk2/2B5/4R1B1/K6N w - - 0 1)

Zilahi, Zoltan

Il Due Mosse, 1955

5R1q/2P4p/3P1bpN/3b2pP/Q1n1nk2/2B5/4R1B1/K6N

#2

11 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Rxe4#
    • 1...Bf7
      • 2.Rxe4#
    • 1...Bg8
      • 2.Rxe4#
    • 1...Se3
      • 2.Rf2#
    • 1...Se5
      • 2.Bd2#
    • 1...Sd2
      • 2.Be5#
    • 1...Sf2
      • 2.Be5#
    • 1...Sg3
      • 2.Be5#
    • 1...Sc5
      • 2.Be5#
    • 1...Sxd6
      • 2.Be5#
  • Tries
    • 1.Rxf6+?
      • 1...Sxf6
        • 2.Bd2#
        • 2.Be5#
      • 1...Qxf6!
  • Keys
    • 1.c8Q!
      • threat
        • 2.Qg4#
      • 1...gxh5
        • 2.Qf5#
      • 1...g4
        • 2.Qxg4#
      • 1...Be6
        • 2.Rxe4#
      • 1...Se3
        • 2.Rf2#
      • 1...Se5
        • 2.Bd2#
      • 1...Sf2
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • B(d);N_GUARD::R1(C),XS(b)
    • B(d);N_GUARD,N_SPINB(f)::R1(C),XS(b)
    • S(a);P_SPINS(b),SBLOCK::R(C)
    • S(a);N_PINB(E),P_SPINS(b),SBLOCK::B(E)
    • S(b);P_SPINS(a)::B(E)
    • S(b);P_SPINS(a),XP(H)::B(E)
  • Tries
    • Try
      • R(K);CHECK,N_SPINB(E),XB(f)
      • Refutation
        • Q(i);P_PINB(E),XR(K)
  • Actual
    • P(J);
    • Threat
      • QAR1(J)
    • Vars
      • P(g);N_GUARD,XP(G)::QAR1(J)
      • P(e);::QAR1(J),XP(e)
      • B(d);N_GUARD::R1(C),XS(b)
      • S(a);P_SPINS(b),SBLOCK::R(C)
      • S(a);N_PINB(E),P_SPINS(b),SBLOCK::B(E)
      • S(b);P_SPINS(a)::B(E)
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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).