MESON Chess Problem Database

Problem Display
PID: 260182 (B1r5/p6N/2n5/1N2kpp1/K1Q2rP1/3P4/2n4B/b5R1 w - - 0 1)

Witt, Andreas

Schweizerische Schachzeitung, 2006

B1r5/p6N/2n5/1N2kpp1/K1Q2rP1/3P4/2n4B/b5R1

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Rxe1#
    • 1...Sa3
      • 2.Re1#
    • 1...S2b4
      • 2.Re1#
    • 1...Sd4
      • 2.Qd5#
    • 1...fxg4
      • 2.Qe4#
  • Tries
    • 1.Re1+?
      • 1...Se3
        • 2.Rxe3#
      • 1...Sxe1!
  • Keys
    • 1.gxf5!
      • threat
        • 2.Qe4#
      • 1...Kxf5
        • 2.Rxg5#
      • 1...Bd4
        • 2.Qe6#
      • 1...S2d4
        • 2.Qc5#
      • 1...S6d4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::R(A),XS(b)
    • S(b);N_GUARD::R(A)
    • S(b);N_GUARD,N_PINQ(E)::R(A)
    • S(g);N_PINQ(E)::QAR1(E)
    • P(e);N_GUARD,XP(F)::QAR1(E)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::R(A),XS(b)
      • Refutation
        • S(b);XR(A)
  • Actual
    • P(F);XP(e)
    • Threat
      • QAR1(E)
    • Vars
      • K(d);N_SPINR(c),OGATEB,P-FLIGHT,XP(F)::R1(A),XP(f)
      • B(a);N_PINQ(E)::QAR1(E)
      • S(b);N_PINQ(E)::QAR2(E)
      • S(g);N_PINQ(E)::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).