MESON Chess Problem Database

Problem Display
PID: 133179 (KR6/p1rPNQ1B/8/B2pR2p/2k4r/p2NP3/8/7b w - - 0 1)

Dragoescu, Radu

1st Place, Romanian Chess Federation, 1986

KR6/p1rPNQ1B/8/B2pR2p/2k4r/p2NP3/8/7b

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxd5#
    • 1...Rc8
      • 2.dxc8Q#
      • 2.dxc8R#
  • Tries
    • 1.Sxd5?
      • threat
        • 2.Rb4#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...Re4
        • 2.S5f4#
      • 1...Rb7
        • 2.Sb6#
      • 1...Rc8
        • 2.dxc8Q#
        • 2.dxc8R#
      • 1...Be4!
  • Keys
    • 1.Rxd5!
      • threat
        • 2.Se5#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...Rb7
        • 2.Rc5#
      • 1...Re4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);S_CUTB(a)::QAB1(G),XP(e)
    • R(h);OGATE,P_PINR(J)::PXR(h)=Q
  • Tries
    • Try
      • S(F);P_SPINS(F),XP(e)
      • Threat
        • R1(J)
      • Vars
        • B(a);CHECK,OGATE,P_SPINB(a),XS(F)::QAB1(G),XB(a)
        • R(d);N_PINS(F)::QAB(G)+S(F)
        • R(h);N_PINS(F)::QAB(G)+S(F),DCHECK
        • R(h);OGATE,P_PINR(J)::PXR(h)=Q
      • Refutation
        • B(a);
  • Actual
    • R(D);P_SPINR(D),XP(e)
    • Threat
      • S(A)
    • Vars
      • B(a);CHECK,OGATE,P_SPINB(a),XR(D)::QAB1(G),XB(a)
      • R(h);N_PINR(D)::QAB(G)+R(D),DCHECK
      • R(d);N_PINR(D)::QAB(G)+R(D),DCHECK
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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).