MESON Chess Problem Database

Problem Display
PID: 7054 (2B5/2p5/1kN5/3P4/Kb1P3r/1nRp4/2Q5/1R1b2B1 w - - 0 1)

Onkoud, Abdelaziz

1st Comm., Die Schwalbe, 1998

2B5/2p5/1kN5/3P4/Kb1P3r/1nRp4/2Q5/1R1b2B1

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Rxb4#
    • 1...Sc1
      • 2.Rxb4#
    • 1...Sd2
      • 2.Rxb4#
    • 1...Sxd4
      • 2.Rxb4#
    • 1...Sa5
      • 2.Rxb4#
    • 1...Sc5+
      • 2.dxc5#
  • Tries
    • 1.Rcxb3?
      • threat
        • 2.Rxb4#
        • 2.Qc5#
      • 1...Rxd4
        • 2.Bxd4#
        • 2.Rxb4#
      • 1...dxc2
        • 2.Rxb4#
      • 1...Bxc2!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rb5#
      • 1...Sxc5+
        • 2.dxc5#
      • 1...Bxc5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • S(b);OGATE,P_PINQ(C),P_SPINB(d)::R(A),XB(d)
    • S(b);OGATE,P_PINQ(C),P_SPINB(d),P_SPINS(b),XP(F)::R(A),XB(d)
    • S(b);CHECK,OGATE,P_PINQ(C),P_SPINB(d)::P(F),XS(b)
  • Tries
    • Try
      • R(D);P_PINB(d),XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XQ(C)::R(D),XB(d)
      • Refutation
        • B(a);P_PINR(D),XQ(C)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • S(b);CHECK,OGATE,P_PINQ(C),P_SPINB(d),XR(D)::P(F),XS(b)
      • B(d);OGATE,P_PINP(F),P_SPINS(b),XR(D)::QAB1(C),XB(d)
HTML5 logo

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).