MESON Chess Problem Database

Problem Display
PID: 154776 (1BR4b/pp3p1p/qP2B3/p3r1n1/3NkNP1/4p1Kp/4P3/Q7 w - - 0 1)

Pape, Edouard

Good Companions (May), 1916

1BR4b/pp3p1p/qP2B3/p3r1n1/3NkNP1/4p1Kp/4P3/Q7

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.exd3#
    • 1...Rd5
      • 2.Bxd5#
    • 1...Rf5
      • 2.Bxf5#
    • 1...Sf3
      • 2.exf3#
  • Tries
    • 1.Qb1+?
      • 1...Qd3
        • 2.Qxd3#
      • 1...Kxd4!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Qd4#
      • 1...Qxb6
        • 2.Qb1#
      • 1...Rxe6
        • 2.Sc5#
      • 1...Sxe6
        • 2.Qh1#
      • 1...Qd3
        • 2.exd3#
      • 1...Qc4
        • 2.Rxc4#
      • 1...Rb5
        • 2.Qb1#
      • 1...Rc5
        • 2.Sxc5#
      • 1...Rd5
        • 2.Bxd5#
      • 1...Rf5
        • 2.Bxf5#
      • 1...Sf3
        • 2.exf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(g);OGATE::P(B),XQ(g)
    • R(e);N_GUARD::B(H),XR(e)
    • S(f);OGATE::P(B),XS(f)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g)::QAB1(A),XQ(g)
      • Refutation
        • K(c);P-FLIGHT,XS(D)
  • Actual
    • S(D);
    • Threat
      • QAR1(A)
    • Vars
      • Q(g);N_GUARD,XP(G)::QAB(A)
      • R(e);N_GUARD,XB(H)::S(D)
      • S(f);N_GUARD,XB(H)::QAB(A)
      • Q(g);OGATE::P(B),XQ(g)
      • Q(g);N_GUARD::R(J),XQ(g)
      • R(e);S_CUTQ(g)::QAB(A)
      • R(e);N_GUARD::S(D),XR(e)
      • R(e);N_GUARD::B(H),XR(e)
      • S(f);OGATE::P(B),XS(f)
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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).