MESON Chess Problem Database

Problem Display
PID: 71450 (5r2/2pP2Rp/2Q1N3/1R2Pk2/4Np2/1K3p1n/8/b7 w - - 0 1)

Dalla Rosa, Pedro

Faria, Oswaldo

Il Due Mosse, 1959

5r2/2pP2Rp/2Q1N3/1R2Pk2/4Np2/1K3p1n/8/b7

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Sxd4#
    • 1...Bxe5
      • 2.Sd4#
    • 1...Sg1
      • 2.Rg5#
    • 1...Sf2
      • 2.Rg5#
    • 1...Sg5
      • 2.Rxg5#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Sd4#
      • 1...Sg5
        • 2.Rxg5#
      • 1...Bxc3!
    • 1.S4c5?
      • threat
        • 2.Qe4#
      • 1...Kxe5
        • 2.Se4#
      • 1...Sg5
        • 2.Rxg5#
      • 1...Sf2
        • 2.Rg5#
      • 1...Bxe5!
    • 1.Sd6+?
      • 1...Kxe6
        • 2.Qd5#
        • 2.Qc4#
      • 1...cxd6!
  • Keys
    • 1.S6c5!
      • threat
        • 2.Qe6#
      • 1...Kxe5
        • 2.Se6#
      • 1...Sg5
        • 2.Rxg5#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Re8
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::S(F),XB(a)
    • B(a);N_GUARD,P_SPINB(a),XP(D)::S(F)
    • S(c);N_GUARD::R1(H)
    • S(c);N_GUARD::R1(H),XS(c)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(F)
      • Vars
        • S(c);N_GUARD::R1(H),XS(c)
      • Refutation
        • B(a);XS(B)
    • Try
      • S(B);
      • Threat
        • QAB1(E)
      • Vars
        • K(e);P-FLIGHT,XP(D)::R(C)+S(B)
        • S(c);N_GUARD::R1(H),XS(c)
        • S(c);N_GUARD::R1(H)
      • Refutation
        • B(a);XP(D)
    • Try
      • S(B);CHECK
      • Refutation
        • P(f);XS(B)
  • Actual
    • S(F);
    • Threat
      • QAB1(E)
    • Vars
      • K(e);P-FLIGHT,XP(D)::R(C)+S(F)
      • S(c);N_GUARD::R1(H),XS(c)
      • R(h);N_GUARD::QAR1(E),XR(h)
      • R(h);N_GUARD::QAR1(E)
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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).