MESON Chess Problem Database

Problem Display
PID: 69295 (1r1b4/pR6/Rn6/2k2N2/4K3/2P5/4QNB1/8 w - - 0 1)

Buchwald, Julius

Chess Life, 1968

1r1b4/pR6/Rn6/2k2N2/4K3/2P5/4QNB1/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Kd4#
    • 1...Bh4
      • 2.Rc7#
    • 1...Bg5
      • 2.Rc7#
    • 1...Bf6
      • 2.Rc7#
    • 1...Bc7
      • 2.Rxc7#
    • 1...Be7
      • 2.Rc7#
    • 1...Sa4
      • 2.Qb5#
    • 1...Sc4
      • 2.Sd3#
    • 1...Sd5
      • 2.Qb5#
    • 1...Sd7
      • 2.Qb5#
    • 1...Sa8
      • 2.Qb5#
    • 1...Sc8
      • 2.Qb5#
  • Tries
    • 1.Bf1?
      • threat
        • 2.Qb5#
      • 1...Sc4
        • 2.Sd3#
        • 2.Qxc4#
      • 1...Kc6!
    • 1.Qc4+?
      • 1...Sxc4
        • 2.Sd3#
      • 1...Kxc4!
  • Keys
    • 1.Kd3!
      • threat
        • 2.Ra5#
      • 1...Kb5
        • 2.Kd4#
      • 1...Sa4
        • 2.Rc6#
        • 2.Qe3#
        • 2.Qe5#
      • 1...Sc4
        • 2.Rc6#
      • 1...Sd5
        • 2.Se4#
      • 1...Sd7
        • 2.Rc6#
        • 2.Qe3#
      • 1...Sa8
        • 2.Rc6#
        • 2.Qe3#
        • 2.Qe5#
      • 1...Sc8
        • 2.Rc6#
        • 2.Qe3#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • K(a);P-FLIGHT,P_SPINS(b)::B(C)+K(E)
    • B(e);N_GUARD::R(H)
    • B(e);N_GUARD::R(H),XB(e)
    • S(b);::QAR1(A)
    • S(b);SBLOCK::S(B)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(b)
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);SBLOCK,XQ(A)::S(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • R(G)
    • Vars
      • K(a);P-FLIGHT,P_SPINS(b)::QAB(A)+K(E)
      • S(b);OGATE::R1(G)
      • S(b);SBLOCK::S(B)
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).