MESON Chess Problem Database

Problem Display
PID: 271074 (8/N4p2/2R4K/3k4/1r1r2p1/4p1B1/2BnQ3/b1qR4 w - - 0 1)

Artz, MDL

Probleemblad, 1951

8/N4p2/2R4K/3k4/1r1r2p1/4p1B1/2BnQ3/b1qR4

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qb5#
    • 1...Rb5
      • 2.Qxb5#
    • 1...Sb1
      • 2.Qg2#
    • 1...Sf1
      • 2.Qg2#
    • 1...Sb3
      • 2.Qg2#
    • 1...Sc4
      • 2.Qg2#
  • Keys
    • 1.Qxe3!
      • threat
        • 2.Qe5#
      • 1...Re4
        • 2.Qc5#
      • 1...Rd3
        • 2.Rc5#
      • 1...Rdc4
        • 2.Rd6#
      • 1...Rf4
        • 2.Qc5#
      • 1...Sb1
        • 2.Be4#
      • 1...Sf1
        • 2.Be4#
      • 1...Sb3
        • 2.Be4#
      • 1...Sf3
        • 2.Be4#
      • 1...Sc4
        • 2.Be4#
      • 1...Se4
        • 2.Bxe4#
      • 1...f6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD::QAR2(C)
    • R(e);N_GUARD::QAR2(C),XR(e)
    • S(c);N_GUARD,P_SPINR(f)::QAB(C)
  • Actual
    • Q(C);XP(d)
    • Threat
      • QAR1(C)
    • Vars
      • R(f);OGATE,P_SPINS(c)::QAR1(C)
      • R(f);::R1(E)
      • R(f);P_SPINS(c),SBLOCK::R1(E)
      • S(c);N_GUARD,P_PINQ(C),P_SPINR(f)::B(B)
      • S(c);N_GUARD,P_PINQ(C),P_SPINR(f)::B(B),XS(c)
      • P(i);N_GUARD::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).