MESON Chess Problem Database

Problem Display
PID: 9356 (1n4K1/p1p5/2N5/1B1kP3/3Bp1Qb/N3p1p1/8/4r3 w - - 0 1)

Tolosa y Carreras, Jose

I Uppnami, 1901

1n4K1/p1p5/2N5/1B1kP3/3Bp1Qb/N3p1p1/8/4r3

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Qd7#
    • 1...Sxc6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
  • Tries
    • 1.Kf7?
      • threat
        • 2.Qe6#
      • 1...Sxc6
        • 2.Qd7#
      • 1...Rf1+!
    • 1.Sc2?
      • threat
        • 2.S2b4#
        • 2.S6b4#
      • 1...Sxc6
        • 2.Qd7#
      • 1...Rb1
        • 2.Sxe3#
      • 1...Be7
        • 2.Sxe7#
      • 1...Sa6
        • 2.Qd7#
      • 1...a5!
    • 1.Qg6?
      • threat
        • 2.Bc4#
        • 2.Qf7#
      • 1...Bf6
        • 2.Qf7#
      • 1...Rf1
        • 2.Bc4#
      • 1...Rc1
        • 2.Qf7#
      • 1...Sxc6!
    • 1.Qg7?
      • threat
        • 2.Qf7#
      • 1...Ke6
        • 2.Qf7#
      • 1...Sxc6
        • 2.Qd7#
      • 1...Rf1!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Bxe4#
      • 1...Kxc6
        • 2.Bxe4#
      • 1...Sxc6
        • 2.Qd7#
      • 1...exd3
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(i);N_GUARD::QAR2(C)
    • S(i);N_GUARD,XS(F)::QAR2(C)
    • S(i);N_GUARD::QAR2(C),XS(i)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • QAB1(C)
      • Vars
        • S(i);N_GUARD,XS(F)::QAR2(C)
      • Refutation
        • R(a);CHECK
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);N_GUARD,XS(F)::QAR2(C)
        • R(a);N_GUARD::S(A),XP(b)
        • B(e);N_GUARD::S(F),XB(e)
        • S(i);N_GUARD::QAR2(C)
      • Refutation
        • P(g);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::QAB(C)
        • R(a);::B(D)
        • R(a);::QAB(C)
      • Refutation
        • S(i);XS(F)
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • K(f);S_FLIGHT::QAB1(C)
        • S(i);N_GUARD,XS(F)::QAR2(C)
      • Refutation
        • R(a);
  • Actual
    • B(D);
    • Threat
      • B(D),XP(d)
    • Vars
      • K(f);S_FLIGHT,XS(F)::B(D),XP(d)
      • S(i);N_GUARD,XS(F)::QAR2(C)
      • P(d);XB(D)::S(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).