MESON Chess Problem Database

Problem Display
PID: 51565 (B3b2r/1QB5/1PR4R/3kp3/K7/nN6/2P1N3/1n6 w - - 0 1)

Driver, John Edward

The Guardian, 1964

B3b2r/1QB5/1PR4R/3kp3/K7/nN6/2P1N3/1n6

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bh5
      • 2.Rc3#
      • 2.Rc5#
    • 1...Bxc6+
      • 2.Qxc6#
    • 1...Bf7
      • 2.Rc3#
      • 2.Rc5#
    • 1...Sd2
      • 2.Sc3#
    • 1...Sc3+
      • 2.Sxc3#
    • 1...Sb5
      • 2.Rc5#
    • 1...e4
      • 2.Sf4#
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qd3#
      • 1...Bxc6+
        • 2.Bxc6#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Ke4
        • 2.Qd3#
      • 1...Sxc2
        • 2.Qc4#
      • 1...Bg6
        • 2.Rd6#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb5
        • 2.Rc5#
      • 1...e4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(e);CHECK,OGATE,P_SPINB(e),XR(F)::QAB1(H),XB(e)
    • S(a);N_GUARD::S(B)
    • S(a);CHECK,N_GUARD::S(B),XS(a)
    • S(b);N_PINR(F)::QAB(H)+R(F),DCHECK
    • P(d);N_GUARD,SBLOCK::S(B)
  • Actual
    • Q(H);
    • Threat
      • QAR2(H)
    • Vars
      • B(e);CHECK,OGATE,P_SPINB(e),XR(F)::B(J),XB(e)
      • S(a);CHECK,N_GUARD::S(B),XS(a)
      • K(c);S_FLIGHT::QAB1(H)
      • S(b);N_GUARD,XP(A)::QAB1(H)
      • B(e);N_PINR(F)::B(J)+R(F),DCHECK
      • S(b);N_GUARD::QAB1(H),XS(b)
      • S(b);N_PINR(F)::B(J)+R(F),DCHECK
      • P(d);N_GUARD,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).