MESON Chess Problem Database

Problem Display
PID: 180863 (2N2Rbb/3p4/3BkPBR/6pK/2P1P2p/3p1r2/Q7/q4r2 w - - 0 1)

May, Willy Paul

Bulletin Ouvrier des Echecs, 1952

2N2Rbb/3p4/3BkPBR/6pK/2P1P2p/3p1r2/Q7/q4r2

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf6
      • 2.c5#
    • 1...Qe1
      • 2.c5#
    • 1...Rxf6
      • 2.Re8#
    • 1...Bf7
      • 2.Bxf7#
    • 1...Bh7
      • 2.Bf7#
  • Keys
    • 1.f7!
      • threat
        • 2.Bf5#
      • 1...Kf6
        • 2.fxg8Q#
      • 1...Bxf7
        • 2.Bxf7#
      • 1...Qf6
        • 2.c5#
      • 1...Rf5
        • 2.Bxf5#
      • 1...Rf6
        • 2.Re8#
      • 1...Bf6
        • 2.fxg8Q#
        • 2.fxg8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(a);N_GUARD,XP(F)::QAB(A)+P(B)
    • Q(a);N_GUARD::QAB(A)+P(B)
    • R(d);SBLOCK,XP(F)::R(J)
    • B(i);N_GUARD,P_PINB(G)::B(G),XB(i)
    • B(i);N_GUARD::B(G)
  • Actual
    • P(F);
    • Threat
      • R(H)+B(G),DCHECK
    • Vars
      • K(g);P-FLIGHT::PXB(i)=Q
      • B(i);OGATE,P_PINB(G),XP(F)::R(H)+B(G),DCHECK,XB(i)
      • Q(a);N_GUARD,SBLOCK::QAB(A)+P(B)
      • R(d);::R(H)+B(G),DCHECK,XR(d)
      • R(d);SBLOCK::R(J)
      • B(j);S_CUTR(d)::PXB(i)=Q
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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).