Problem Display
PID: 189918 (1n6/4p3/2p1P3/n1pk1P2/P6R/BpP2KQp/8/8 w - - 0 1)

Leopold, Dr Rudolf L

Magyar Sakkvilag, 1912

1n6/4p3/2p1P3/n1pk1P2/P6R/BpP2KQp/8/8

#2

8 + 8


6490 yacpdb 2019
5454 Near Snap 2022

SOLUTION


  • SOUND
  • Sets
    • 1...Sb7
      • 2.c4#
    • 1...c4
      • 2.Rd4#
  • Keys
    • 1.Kf4!
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Ke5#
      • 1...Kd6
        • 2.Ke4#
      • 1...c4
        • 2.Qf3#

This anticipates 141106(1973)

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(c);N_GUARD::P(B)
    • P(d);N_GUARD::R1(F)
  • Actual
    • K(C);P-FLIGHT
    • Threat
      • QAR2(D)
    • Vars
      • K(e);S_FLIGHT::R(F)+K(C)
      • K(e);P-FLIGHT,P_SPINP(d)::QAB(D)+K(C)
      • P(d);SBLOCK::QAB(D)


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).