MESON Chess Problem Database

Problem Display
PID: 98569 (8/8/8/B7/1R6/2k5/pR2BK2/n7 w - - 0 1)

Pypa, Volodimir Iosifovich

Problem (Zagreb), 1973

8/8/8/B7/1R6/2k5/pR2BK2/n7

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Ke3?
      • threat
        • 2.R4b3#
        • 2.Rb5#
        • 2.Rb6#
        • 2.Rb7#
        • 2.Rb8#
      • 1...Sb3
        • 2.R4xb3#
      • 1...Sc2+!
    • 1.Bb6?
      • threat
        • 2.Bd4#
      • 1...Sb3
        • 2.R4xb3#
      • 1...Sc2!
    • 1.Rxa2?
      • 1...Sb3
        • 2.Rc4#
      • 1...Sc2!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Rb1#
        • 2.Rbb2#
        • 2.Rb5#
        • 2.Rb6#
        • 2.Rb7#
        • 2.Rb8#
      • 1...Kxd2
        • 2.Rc4#
      • 1...Sc2
        • 2.Rd3#
      • 1...Sb3
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • DUALS(5)
      • Vars
        • S(a);::B(E)+R(D),DCHECK,XS(a)
      • Refutation
        • S(a);CHECK
    • Try
      • B(E);
      • Threat
        • B(E)
      • Vars
        • S(a);N_GUARD::R1(D),XS(a)
      • Refutation
        • S(a);
    • Try
      • R(A);XP(b)
      • Vars
        • S(a);SBLOCK::B(E)+R(D),DCHECK
      • Refutation
        • S(a);
  • Actual
    • R(A);
    • Threat
      • DUALS(6)
    • Vars
      • K(c);S_FLIGHT,XR(A)::B(E)+R(D)
      • S(a);SBLOCK::R1(A)
      • S(a);SBLOCK::B(E)+R(D),DCHECK
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).