MESON Chess Problem Database

Problem Display
PID: 240380 (5B2/2n2p2/2p2r2/RqN1k2P/2R2pP1/2P5/1n2N1BQ/5K2 w - - 0 1)

Zilahi, Zoltan

Tijdschrift vd KNSB, 1934

5B2/2n2p2/2p2r2/RqN1k2P/2R2pP1/2P5/1n2N1BQ/5K2

#2

11 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qxf4#
    • 1...Re6
      • 2.Sd7#
      • 2.Qxf4#
    • 1...Rg6
      • 2.Qxf4#
    • 1...Rh6
      • 2.Qxf4#
    • 1...Sd5
      • 2.Re4#
    • 1...Se6
      • 2.Sd7#
  • Tries
    • 1.Bd6+?
      • 1...Rxd6
        • 2.Qxf4#
      • 1...Kxd6!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Sd7#
      • 1...Qxc4+
        • 2.Sd3#
      • 1...Rxf4+
        • 2.Qxf4#
      • 1...Qxc5
        • 2.Re4#
      • 1...Rd6
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(f);N_GUARD::QAB1(D),XP(b)
    • S(g);SBLOCK::R1(F)
    • S(g);SBLOCK::S(I)
  • Tries
    • Try
      • B(K);CHECK
      • Vars
        • R(f);SBLOCK,XB(K)::QAB1(D),XP(b)
      • Refutation
        • K(d);S_FLIGHT,XB(K)
  • Actual
    • S(B);P_SPINR(F),P_SPINS(B),XP(b)
    • Threat
      • S(I)
    • Vars
      • Q(c);CHECK,XR(F)::R(H)+S(I),DCHECK
      • R(f);CHECK,OGATE,P_SPINR(f),XS(B)::QAB1(D),XR(f)
      • Q(c);N_PINR(F),P_SPINQ(c),XS(I)::R1(F)
      • R(f);N_PINS(B)::QAB(D)+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).