MESON Chess Problem Database

Problem Display
PID: 145267 (K1R1b2N/2QP2B1/3brq2/3pkp2/2PpppP1/2PP4/8/3R4 w - - 0 1)

O'Shea, Patrick

The Problemist, 1997

K1R1b2N/2QP2B1/3brq2/3pkp2/2PpppP1/2PP4/8/3R4

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.Sxg6#
    • 1...Bxd7
      • 2.Sg6#
      • 2.Sf7#
    • 1...Bf7
      • 2.Sxf7#
    • 1...dxc3
      • 2.d4#
    • 1...exd3
      • 2.Re1#
  • Keys
    • 1.dxe8Q!
      • threat
        • 2.Sg6#
        • 2.Sf7#
      • 1...Qxg7
        • 2.Qxg7#
      • 1...Rxe8
        • 2.Rxe8#
      • 1...Bxc7
        • 2.Sf7#
      • 1...dxc3
        • 2.d4#
      • 1...exd3
        • 2.Re1#
      • 1...dxc4
        • 2.Qb5#
      • 1...fxg4
        • 2.Qh5#
      • 1...Re7
        • 2.Qexe7#
      • 1...f3
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • B(j);N_GUARD::S(K),XB(j)
    • P(a);OGATE,XP(B)::P(C)
    • P(b);OGATEB,XP(C)::R(A)
  • Actual
    • P(G);P_PINR(h),XB(j)
    • Threat
      • DUALS(2)
    • Vars
      • Q(i);N_SPINQ(i),OGATE,XB(H)::QAB(F),XQ(i)
      • R(h);N_SPINR(h),OGATE,P_PINR(J),XQ(G)::R(J),XR(h)
      • B(g);N_SPINB(g),XQ(F)::S(K)
      • P(a);OGATE,XP(B)::P(C)
      • P(b);OGATEB,XP(C)::R(A)
      • P(d);OGATEB,XP(D)::QAR(G)
      • P(f);OGATEB,XP(E)::QAR(G)
      • R(h);OGATEB::QAR2(G),XR(h)
      • P(c);::S(K)
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).