MESON Chess Problem Database

Problem Display
PID: 178597 (5B2/1q1bRn1n/1p6/pBkr1R2/P1N4b/1p3Np1/1P6/K3Q3 w - - 0 1)

ten Cate, Pieter

Boletim da UBP, 1981

5B2/1q1bRn1n/1p6/pBkr1R2/P1N4b/1p3Np1/1P6/K3Q3

#2

10 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rexe5#
    • 1...Rxf5
      • 2.Re5#
    • 1...Bxb5
      • 2.Rc7#
    • 1...Bxf5
      • 2.Rc7#
    • 1...Be6
      • 2.Rc7#
    • 1...Bc8
      • 2.Rc7#
    • 1...Be8
      • 2.Rc7#
    • 1...Sfg5
      • 2.Rxh7#
    • 1...Shg5
      • 2.Rexf7#
    • 1...Sf6
      • 2.Rxf7#
  • Tries
    • 1.Rexf7+?
      • 1...Be7
        • 2.Bxe7#
        • 2.Qxe7#
      • 1...Sxf8!
  • Keys
    • 1.Scd2!
      • threat
        • 2.Se4#
      • 1...Kb4
        • 2.Re4#
      • 1...Kd6
        • 2.Rxd7#
      • 1...Rxf5
        • 2.Re5#
      • 1...Bxb5
        • 2.Rc7#
      • 1...Bxf5
        • 2.Rc7#
      • 1...Re5
        • 2.Rexe5#
      • 1...Sfg5
        • 2.Rxh7#
      • 1...Sd6
        • 2.Sxb3#
      • 1...Shg5
        • 2.Rexf7#
      • 1...Sf6
        • 2.Rxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(f);::B(J)+R(I),DCHECK,XR(f)
    • R(f);N_SPINR(f),XR(H)::B(J)+R(I),DCHECK
    • B(i);OGATE,XB(G)::B(J)+R(I),DCHECK
    • B(i);N_SPINR(f),OGATE,XR(H)::B(J)+R(I),DCHECK
    • B(i);OGATE::B(J)+R(I),DCHECK
    • S(j);OGATE::B(J)+R(I),XS(k)
    • S(k);N_GUARD,S_CUTB(c)::B(J)+R(I),XS(j)
  • Tries
    • Try
      • R(I);CHECK,XS(j)
      • Refutation
        • S(k);XB(J)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(e);N_SPINR(f),S_FLIGHT::B(J)+R(I),DCHECK
      • K(e);N_SPINR(f),S_FLIGHT::B(J)+R(I),DCHECK,XB(i)
      • R(f);N_SPINR(f),XR(H)::B(J)+R(I),DCHECK
      • B(i);OGATE,XB(G)::B(J)+R(I),DCHECK
      • B(i);N_SPINR(f),OGATE,XR(H)::B(J)+R(I),DCHECK
      • R(f);::B(J)+R(I),DCHECK,XR(f)
      • S(j);OGATE::B(J)+R(I),XS(k)
      • S(j);SBLOCK::S(F),XP(a)
      • S(k);N_GUARD,S_CUTB(c)::B(J)+R(I),XS(j)
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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).