MESON Chess Problem Database

Problem Display
PID: 165671 (2N1Q3/K3P1p1/2Pp1qB1/p4Rp1/r3k3/2pp4/4NP2/5n2 w - - 0 1)

Anonymous

British Chess Magazine 15. (Healey MT) Ty., 1909-1910

2N1Q3/K3P1p1/2Pp1qB1/p4Rp1/r3k3/2pp4/4NP2/5n2

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe7+
      • 2.Qxe7#
    • 1...Qf7
      • 2.Sxd6#
    • 1...Qf8
      • 2.Sxd6#
      • 2.exf8Q#
      • 2.exf8S#
      • 2.exf8B#
      • 2.exf8R#
    • 1...Rd4
      • 2.Sxc3#
    • 1...Se3
      • 2.f3#
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qd5#
      • 1...Qd4+
        • 2.Rc5#
      • 1...Qxe7+
        • 2.Qxe7#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...Qxf7
        • 2.Sxd6#
      • 1...Qe5
        • 2.Rf4#
      • 1...Qe6
        • 2.Qxe6#
      • 1...Rd4
        • 2.Sxc3#
      • 1...Se3
        • 2.f3#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(i);CHECK,OGATE,P_SPINQ(i),XP(G)::QAR(I),XQ(i)
    • Q(i);N_GUARD,P_PINP(G)::S(H),XP(h)
    • R(d);SBLOCK,S_CUTQ(i)::S(A),XP(b)
    • S(a);SBLOCK::P(B)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I)
    • Vars
      • Q(i);CHECK,N_GUARD::B(E)+R(C)
      • Q(i);CHECK,OGATE,XP(G)::QAR(I),XQ(i)
      • Q(i);OGATE,P_SPINQ(i),XR(C)::QAB1(I),XQ(i)
      • Q(i);N_GUARD,P_PINP(G),XQ(I)::S(H),XP(h)
      • Q(i);SBLOCK::B(E)+R(C),DCHECK
      • Q(i);N_GUARD::QAR2(I),XQ(i)
      • R(d);SBLOCK,S_CUTQ(i)::S(A),XP(b)
      • S(a);SBLOCK::P(B)
      • P(h);::QAB1(I),XP(h)
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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).