MESON Chess Problem Database

Problem Display
PID: 248905 (3N1K2/1p2R3/3kP3/1P3p2/r1p5/1B6/1r2N3/B1R4Q w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 1971

3N1K2/1p2R3/3kP3/1P3p2/r1p5/1B6/1r2N3/B1R4Q

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sxb7#
    • 1...Rba2
      • 2.Sxb7#
    • 1...Rc2
      • 2.Sxb7#
    • 1...Rd2
      • 2.Sxb7#
    • 1...Rxe2
      • 2.Sxb7#
    • 1...Rxb3
      • 2.Sxb7#
    • 1...cxb3
      • 2.Sf7#
    • 1...c3
      • 2.Qd5#
  • Tries
    • 1.Qh8?
      • threat
        • 2.Qd4#
      • 1...Kd5
        • 2.Qd4#
      • 1...cxb3
        • 2.Rd7#
      • 1...Rd2
        • 2.Qe5#
      • 1...c3
        • 2.Sxb7#
      • 1...Kc5!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qd4#
      • 1...Kd5
        • 2.Qd4#
      • 1...Ke5
        • 2.Qd4#
      • 1...cxb3
        • 2.Qc5#
      • 1...Rd2
        • 2.Rd7#
      • 1...c3
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(a);::S(I),XP(f)
    • R(a);XS(D)::S(I),XP(f)
    • R(a);XB(E)::S(I),XP(f)
    • P(c);XB(E)::S(I)
    • P(c);::QAR1(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(c)::QAR1(C)
        • P(c);XB(E)::R1(H)
        • R(a);::QAB1(C)
        • P(c);::S(I),XP(f)
      • Refutation
        • K(e);P_SPINP(c),S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • K(e);P-FLIGHT,P_SPINP(c)::QAR1(C)
      • K(e);P_SPINR(a),S_FLIGHT::QAB1(C)
      • P(c);XB(E)::QAB1(C)
      • R(a);::R1(H)
      • P(c);::S(I)
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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).