Problem Display
PID: 18738 (5QKB/2P5/8/3k4/8/1R4N1/8/8 w - - 0 1)

Abdurahmanovic, Fadil

1st Prize, Yugoslav Republic Ty., 1957

5QKB/2P5/8/3k4/8/1R4N1/8/8

#2

6 + 1


5862 An ABC of Chess Problems 1970
2012 Miniature Chess Problems from Many Countries 1981
3295 Einfuhrung in die Welt des Schachproblem 1984
4640 Chess Wizardry: The New ABC of Chess Problems 1996
3310 2345 Chess Problems 1997
5454 Near Snap 2017

SOLUTION


  • SOUND
  • Tries
    • 1.Rb5+?
      • 1...Kc4
        • 2.Qf1#
      • 1...Ke6
        • 2.c8Q#
        • 2.c8B#
      • 1...Kc6!
    • 1.Qc5+?
      • 1...Ke6
        • 2.c8Q#
        • 2.c8B#
      • 1...Kxc5!
    • 1.Qd6+?
      • 1...Kc4
        • 2.Rb4#
      • 1...Kxd6!
    • 1.Qd8+?
      • 1...Kc5
        • 2.c8Q#
        • 2.c8R#
      • 1...Kc6
        • 2.c8Q#
        • 2.c8R#
      • 1...Ke6
        • 2.Re3#
        • 2.Rb6#
        • 2.c8Q#
        • 2.c8B#
      • 1...Kc4!
    • 1.c8S?
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
        • 2.Qf5#
        • 2.Qf7#
      • 1...Kc4!
    • 1.c8B?
      • 1...Kc4
        • 2.Be6#
      • 1...Kc6!
  • Keys
    • 1.Se4!
      • 1...Kc4
        • 2.Qf7#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qf7#

Anticipated by 95240(1911)

This anticipates 161748(1974)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(D)
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(C);
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);S_FLIGHT::QAB(D)
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(D)
      • K(a);S_FLIGHT::QAR1(D)
      • K(a);S_FLIGHT::QAB1(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).