Problem Display
PID: 62716 (4K3/8/2p4B/2rknQ1p/7r/1P2R3/7b/8 w - - 0 1)

Abela de la Torre, Aurelio

The Chess Monthly (Hoffer), 1880

4K3/8/2p4B/2rknQ1p/7r/1P2R3/7b/8

#2

5 + 7


15148 Sadier Collection 2014

SOLUTION


  • SOUND
  • Sets
    • 1...Rf4
      • 2.Qxe5#
    • 1...Bg1
      • 2.Qxe5#
    • 1...Bf4
      • 2.Rd3#
  • Keys
    • 1.Bf4!
      • threat
        • 2.Rd3#
        • 2.Qxe5#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kd6
        • 2.Qd7#
      • 1...Rxf4
        • 2.Qxe5#
      • 1...Bxf4
        • 2.Rd3#
      • 1...Rc1
        • 2.Qxe5#
      • 1...Rc2
        • 2.Qxe5#
      • 1...Rc3
        • 2.Qxe5#
      • 1...Rc4
        • 2.Qxe5#
      • 1...Ra5
        • 2.Qxe5#
      • 1...Rb5
        • 2.Qxe5#
      • 1...Rh3
        • 2.Qxe5#
      • 1...Bg1
        • 2.Qxe5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(b);S_CUTB(a)::QAR1(C),XS(e)
    • B(a);N_GUARD::QAR1(C),XS(e)
    • B(a);S_CUTR(b)::R(B)
  • Actual
    • B(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(d);N_SPINS(e),P-FLIGHT::QAR1(C)
      • K(d);P-FLIGHT::QAR1(C)
      • R(b);XB(D)::QAR1(C),XS(e)
      • B(a);XB(D)::R(B)
      • R(c);::QAR1(C),XS(e)
      • R(b);::QAR1(C),XS(e)
      • B(a);::QAR1(C),XS(e)


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).