MESON Chess Problem Database

Problem Display
PID: 1133 (2R5/8/2Pk2N1/2r2P2/2B1p3/BpK1N3/PQb4r/8 w - - 0 1)

McWilliam, Robert C

Problem Observer, 1978

2R5/8/2Pk2N1/2r2P2/2B1p3/BpK1N3/PQb4r/8

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxh2#
    • 1...Bd1
      • 2.Qxh2#
    • 1...Bd3
      • 2.Qxh2#
    • 1...bxa2
      • 2.Qb8#
  • Keys
    • 1.Kb4!
      • threat
        • 2.Qf6#
      • 1...Rxc4+
        • 2.Kxc4#
      • 1...Rb5+
        • 2.Kxb5#
      • 1...Rxf5
        • 2.Sxf5#
      • 1...Rxc6
        • 2.Qd4#
      • 1...Re5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • B(a);::QAB(B),XR(b)
    • P(c);XP(A)::QAB(B)
  • Actual
    • K(D);N_PINR(e),N_SPINB(F),S_FLIGHT
    • Threat
      • QAR2(B)
    • Vars
      • R(e);CHECK,XB(F)::B(C)+K(D),XR(e)
      • R(e);CHECK::B(C)+K(D),XR(e)
      • R(e);XP(G)::S(E),XR(e)
      • R(e);N_GUARD,XP(H)::QAR2(B)
      • R(e);N_GUARD::QAB1(B),XR(e)
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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).