Problem Display
PID: 190064 (5r1B/3N4/3p1r2/1b3Pp1/3Pk1K1/1P1pp3/2P5/1B1Q2N1 w - - 0 1)

Leopold, Dr Rudolf L

Magyar Sakkvilag, 1913

5r1B/3N4/3p1r2/1b3Pp1/3Pk1K1/1P1pp3/2P5/1B1Q2N1

#2

10 + 8


6490 yacpdb 2019

SOLUTION


  • SOUND
  • Sets
    • 1...Re6
      • 2.Qf3#
    • 1...Rg6
      • 2.Qf3#
    • 1...Rh6
      • 2.Qf3#
    • 1...R6f7
      • 2.Qf3#
  • Tries
    • 1.c4?
      • threat
        • 2.Qxd3#
      • 1...Kxd4
        • 2.Qxd3#
      • 1...Bxc4!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qh1#
      • 1...Kd5
        • 2.Qh1#
      • 1...Rxf5
        • 2.Sc3#
      • 1...Rxh8
        • 2.Sxf6#
      • 1...dxc2
        • 2.Sc3#
      • 1...dxe2
        • 2.c4#
      • 1...Rh6
        • 2.Sc3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(g);::QAB1(B)
  • Tries
    • Try
      • P(D);P_PINP(a)
      • Threat
        • QAB1(B),XP(a)
      • Vars
        • K(c);P-FLIGHT,P_SPINR(g),XP(F)::QAR1(B),XP(a)
      • Refutation
        • B(d);XP(D)
  • Actual
    • S(C);
    • Threat
      • QAB(B)
    • Vars
      • K(c);S_FLIGHT::QAB(B)
      • R(g);XP(H)::S(C)
      • R(h);N_GUARD,XB(J)::S(I),XR(g)
      • P(a);P_SPINP(a),XP(D)::S(C)
      • P(a);XS(C)::B(A)+P(D)
      • R(g);::S(C)


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).