MESON Chess Problem Database

Problem Display
PID: 76402 (3R4/n5p1/2P5/5Q2/Ppkq1R2/1r3NNK/B1nPp3/b7 w - - 0 1)

Gamage, Frederick

Frederick Gamage (Prcic), 2004

3R4/n5p1/2P5/5Q2/Ppkq1R2/1r3NNK/B1nPp3/b7

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qd5#
    • 1...Qxf4
      • 2.Qd5#
    • 1...Bc3
      • 2.d3#
    • 1...Sb5
      • 2.Qxb5#
    • 1...Sxc6
      • 2.Qb5#
    • 1...Sc8
      • 2.Qb5#
  • Tries
    • 1.Sxd4?
      • threat
        • 2.Bxb3#
      • 1...Bxd4
        • 2.Qxc2#
      • 1...Sxd4!
    • 1.Qe6+?
      • 1...Kd3
        • 2.Qxe2#
      • 1...Kc5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sd6#
      • 1...Kd3
        • 2.Se5#
      • 1...Qxd2
        • 2.Qc5#
      • 1...Qxe4
        • 2.Qd5#
      • 1...Qe5
        • 2.d3#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sc8
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(g);::QAB1(H)
    • Q(g);N_SPINQ(g),XR(G)::QAB1(H)
    • B(a);SBLOCK::P(B)
    • S(h);N_GUARD::QAB1(H),XS(h)
    • S(h);N_GUARD,XP(I)::QAB1(H)
    • S(h);N_GUARD::QAB1(H)
  • Tries
    • Try
      • S(C);P_SPINS(D),XQ(g)
      • Threat
        • B(A),XR(d)
      • Vars
        • B(a);N_GUARD,P_SPINB(a),XS(C)::QAR2(H),XS(b)
      • Refutation
        • S(b);P_SPINS(b),XS(C)
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);N_SPINR(d),S_FLIGHT::QAB1(H),XP(c)
      • Refutation
        • K(f);N_SPINQ(g),N_SPINR(d),P-FLIGHT
  • Actual
    • S(D);N_PINQ(g),P_SPINS(C)
    • Threat
      • S(D)
    • Vars
      • K(f);N_PINS(C),N_SPINR(d),P_SPINQ(g),S_FLIGHT::S(C)
      • Q(g);N_GUARD,XP(B)::QAR1(H)
      • Q(g);N_GUARD,P_SPINQ(g),XS(D)::QAB1(H)
      • Q(g);N_GUARD::P(B)
      • Q(g);N_GUARD::QAB1(H),XQ(g)
      • Q(g);::R(G)+S(D),DCHECK,XQ(g)
      • S(h);N_GUARD::QAB1(H),XS(h)
      • S(h);N_GUARD::QAB1(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).