MESON Chess Problem Database

Problem Display
PID: 173578 (3B2q1/7b/2n1r3/3NRr2/1p1k4/1R3nP1/1NQ5/K7 w - - 0 1)

Mariz Garcia, J

2nd Comm., Boletim da UBP, 1984-1985

3B2q1/7b/2n1r3/3NRr2/1p1k4/1R3nP1/1NQ5/K7

#2

8 + 8

1077 Boletim da UBP 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Rfxe5
      • 2.Qc4#
    • 1...Rexe5
      • 2.Qc4#
  • Tries
    • 1.Rxb4+?
      • 1...Sxb4
        • 2.Qc3#
      • 1...Kxe5!
    • 1.Qd3+?
      • 1...Kxe5
        • 2.Sc4#
      • 1...Kc5!
    • 1.Qc5+?
      • 1...Kxe5
        • 2.Sc3#
        • 2.Sf6#
        • 2.Re3#
      • 1...Kxc5!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qe4#
        • 2.Qc5#
      • 1...Kxe5
        • 2.Qc5#
      • 1...Rfxe5
        • 2.Qc4#
      • 1...Rfxf6
        • 2.Qc5#
      • 1...Rexe5
        • 2.Rd3#
      • 1...Sfxe5
        • 2.Bb6#
      • 1...Scxe5
        • 2.Qf2#
      • 1...Qg4
        • 2.Qc5#
      • 1...Qf8
        • 2.Qe4#
      • 1...Rf4
        • 2.Rd5#
        • 2.Qc5#
      • 1...Rg5
        • 2.Qc5#
      • 1...Rh5
        • 2.Qc5#
      • 1...Sd2
        • 2.Qc5#
      • 1...Sg5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK,XR(G)::QAR1(C)
    • R(f);SBLOCK,XR(G)::QAR1(C)
  • Tries
    • Try
      • R(D);CHECK,XP(b)
      • Vars
        • S(e);XR(D)::QAB1(C)
      • Refutation
        • K(c);S_FLIGHT,XR(G)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT,XR(G)::S(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(C)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);S_FLIGHT,XR(G)::QAR2(C)
      • R(d);SBLOCK,XR(G)::QAR1(C)
      • R(d);XS(F)::QAB1(C)
      • R(f);SBLOCK,XR(G)::R1(D)
      • S(a);SBLOCK,XR(G)::B(H)
      • S(e);SBLOCK,XR(G)::QAB(C)
      • Q(h);::QAB1(C)
      • Q(h);::QAR1(C)
      • R(d);::QAB1(C)
      • S(a);::QAB1(C)
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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).