MESON Chess Problem Database

Problem Display
PID: 139200 (k1q4R/2B5/bP5p/8/3p4/R3bK2/3p1P2/2nN1n1B w - - 0 1)

Davis, Edward

Kipping, Cyril Stanley

The Problemist, 1937

k1q4R/2B5/bP5p/8/3p4/R3bK2/3p1P2/2nN1n1B

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Kg4#
      • 2.Rxb8#
    • 1...Qd8
      • 2.Kg4#
    • 1...Qe8
      • 2.Kg4#
    • 1...Qf8+
      • 2.Kg4#
    • 1...Qxh8
      • 2.Kg4#
    • 1...Bxf2
      • 2.Kxf2#
      • 2.Kf4#
    • 1...Bf4
      • 2.Kxf4#
    • 1...Sd3
      • 2.Ke2#
    • 1...Sg3
      • 2.Kxg3#
  • Keys
    • 1.Kg2!
      • threat
        • 2.Kg1#
      • 1...Qg8+
        • 2.Kh3#
      • 1...Kb7
        • 2.Kg1#
      • 1...Bxf2
        • 2.Kxf2#
      • 1...Se2
        • 2.Kxf1#
      • 1...Sh2
        • 2.Kxh2#
      • 1...Sg3
        • 2.Kxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(i);::B(B)+K(E)
    • Q(i);CHECK::B(B)+K(E)
    • Q(i);N_SPINQ(i),SBLOCK,XR(H)::B(B)+K(E)
    • B(d);::B(B)+K(E),XB(d)
    • S(a);::B(B)+K(E)
    • S(b);::B(B)+K(E),XS(b)
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • B(B)+K(E)
    • Vars
      • Q(i);CHECK::B(B)+K(E)
      • K(h);N_SPINB(f),N_SPINQ(i),S_FLIGHT::B(B)+K(E)
      • B(d);XP(C)::B(B)+K(E),XB(d)
      • S(a);::B(B)+K(E),XS(b)
      • S(b);::B(B)+K(E),XS(b)
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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).