MESON Chess Problem Database

Problem Display
PID: 203356 (b1q1n3/3p4/5P2/1Pp1kNBp/1Q1p4/3PNp1K/B7/4R3 w - - 0 1)

Winter, Karel

Comm., Australian Ty., 1924

b1q1n3/3p4/5P2/1Pp1kNBp/1Q1p4/3PNp1K/B7/4R3

#2

10 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...dxe3
      • 2.Qf4#
    • 1...c4
      • 2.Qe7#
  • Tries
    • 1.Sc4+?
      • 1...Kd5
        • 2.Sb6#
        • 2.Se7#
        • 2.Re5#
      • 1...Kxf5!
    • 1.Se7?
      • threat
        • 2.Sc4#
      • 1...d5+
        • 2.S3f5#
      • 1...d6+
        • 2.Sg4#
      • 1...Kd6
        • 2.Bf4#
      • 1...dxe3
        • 2.Qf4#
      • 1...c4
        • 2.Sxc4#
        • 2.Sg4#
        • 2.S3d5#
      • 1...Be4!
  • Keys
    • 1.Sh6!
      • threat
        • 2.Sf7#
      • 1...d5+
        • 2.Sef5#
      • 1...d6+
        • 2.Seg4#
      • 1...Kd6
        • 2.Bf4#
      • 1...dxe3
        • 2.Qf4#
      • 1...Bd5
        • 2.Sc4#
      • 1...Sd6
        • 2.Seg4#
      • 1...c4
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE,P_SPINP(b),XS(D)::QAB1(F)
    • P(c);OGATE::QAR2(F)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(d);P-FLIGHT,XS(H)
    • Try
      • S(H);
      • Threat
        • R(A)+S(D),DCHECK
      • Vars
        • P(f);CHECK,S_CUTB(g)::R(A)+S(D)
        • P(f);CHECK,SBLOCK::R(A)+S(D),DCHECK
        • K(d);P_SPINP(c),S_FLIGHT::B(I)
        • P(b);OGATE,P_SPINP(b),XS(D)::QAB1(F)
      • Refutation
        • B(g);
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • P(f);CHECK,S_CUTB(g)::R(A)+S(D)
      • P(f);CHECK,SBLOCK::R(A)+S(D),DCHECK
      • K(d);P_SPINP(c),S_FLIGHT::B(I)
      • P(b);OGATE,P_SPINP(b),XS(D)::QAB1(F)
      • B(g);SBLOCK::R(A)+S(D),DCHECK
      • S(i);SBLOCK::R(A)+S(D),DCHECK
      • P(c);OGATE::QAR2(F)
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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).