MESON Chess Problem Database

Problem Display
PID: 2888 (2n5/3B2K1/8/6kp/5N2/6r1/3B3b/2Q5 w - - 0 1)

van Beek, Huibrecht

Source?, 1902

2n5/3B2K1/8/6kp/5N2/6r1/3B3b/2Q5

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...h4
      • 2.Qc5#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Sh3#
      • 1...Kh4+
        • 2.Sg6#
      • 1...Rh3
        • 2.Sxh3#
      • 1...h4
        • 2.Qb5#
        • 2.Qd5#
        • 2.Qc5#
      • 1...Rg4!
  • Keys
    • 1.Qe1!
      • 1...Kh4+
        • 2.Sg6#
      • 1...Re3
        • 2.Sh3#
      • 1...Rg1
        • 2.Sh3#
      • 1...Rg2
        • 2.Sh3#
      • 1...Ra3
        • 2.Sh3#
      • 1...Rb3
        • 2.Sh3#
      • 1...Rc3
        • 2.Sh3#
      • 1...Rd3
        • 2.Sh3#
      • 1...Rf3
        • 2.Sh3#
      • 1...Rh3
        • 2.Sxh3#
      • 1...Rg4
        • 2.Sh3#
      • 1...Bg1
        • 2.Qxg3#
      • 1...Sb6
        • 2.Qe7#
      • 1...Sd6
        • 2.Qe7#
      • 1...Sa7
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#
      • 1...h4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 16
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • B(B)+S(C),DCHECK
      • Vars
        • K(c);CHECK,S_FLIGHT::QAR(A)+S(C),DCHECK
        • R(b);::B(B)+S(C),DCHECK,XR(b)
      • Refutation
        • R(b);
  • Actual
    • Q(A);
    • Vars
      • K(c);CHECK,P_SPINR(b),S_FLIGHT::S(C)
      • R(b);::S(C)
      • R(b);::B(B)+S(C),DCHECK
      • R(b);::B(B)+S(C),DCHECK,XR(b)
      • B(a);N_GUARD::QAR2(A),XR(b)
      • S(e);N_GUARD::QAB(A)
      • S(e);N_GUARD::QAB(A),XS(e)
      • P(d);SBLOCK::QAR2(A)
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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).