MESON Chess Problem Database

Problem Display
PID: 109813 (1Q6/p4r2/K1NPp1R1/BP2P3/p1kPp2R/q7/b1P1N3/5B2 w - - 0 1)

Retter, Yosef

Al Hamishmar, 1980

1Q6/p4r2/K1NPp1R1/BP2P3/p1kPp2R/q7/b1P1N3/5B2

#2

13 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Sf4#
    • 1...Qc5
      • 2.Sf4#
    • 1...Qxd6
      • 2.Sf4#
    • 1...Rb7
      • 2.Sc3#
    • 1...Rc7
      • 2.Sc3#
    • 1...Rd7
      • 2.Sc3#
    • 1...Re7
      • 2.Sc3#
    • 1...Rg7
      • 2.Sc3#
    • 1...Rh7
      • 2.Sc3#
    • 1...Bb3
      • 2.Sf4#
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qxe6#
      • 1...Kd5
        • 2.Qxe6#
      • 1...Qxd6
        • 2.Sf4#
      • 1...Qc5
        • 2.Sf4#
      • 1...Qh3
        • 2.Se7#
      • 1...Rf6
        • 2.Sb4#
      • 1...Rd7
        • 2.Sc3#
      • 1...Re7
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::B(A)+S(C)
    • Q(b);N_GUARD,P_PINS(J),XP(K)::B(A)+S(C)
    • R(h);N_GUARD::B(A)+S(C)
    • B(a);S_CUTQ(b)::B(A)+S(C)
  • Actual
    • Q(M);
    • Threat
      • QAB(M),XP(f)
    • Vars
      • K(d);S_FLIGHT::QAB1(M),XP(f)
      • Q(b);N_GUARD,P_PINS(J),XP(K)::B(A)+S(C)
      • Q(b);N_GUARD::B(A)+S(C)
      • Q(b);N_GUARD::QAR(M)+S(J)
      • R(h);N_GUARD::QAR(M)+S(J)
      • R(h);N_GUARD::B(A)+S(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).