MESON Chess Problem Database

Problem Display
PID: 17375 (1BQ1N1B1/K2P1q2/p3kp1b/r2n2n1/2P1P1N1/8/4R3/8 w - - 0 1)

Nanning, Frederik Willem

3rd HM., Heilbut TT, 1946

1BQ1N1B1/K2P1q2/p3kp1b/r2n2n1/2P1P1N1/8/4R3/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sc7
      • 2.d8Q#
      • 2.d8B#
    • 1...Se7
      • 2.d8S#
    • 1...f5
      • 2.exd5#
  • Tries
    • 1.Sc7+?
      • 1...Ke7
        • 2.d8Q#
      • 1...Sxc7
        • 2.d8Q#
      • 1...Kd6!
    • 1.Sg7+?
      • 1...Ke7
        • 2.d8Q#
      • 1...Bxg7!
    • 1.cxd5+?
      • 1...Ke7
        • 2.Bd6#
      • 1...Rxd5!
  • Keys
    • 1.Sd6!
      • threat
        • 2.exd5#
      • 1...Ke7
        • 2.d8Q#
      • 1...Sxe4
        • 2.Rxe4#
      • 1...Sc7
        • 2.d8Q#
      • 1...Sc3
        • 2.Qe8#
      • 1...Se3
        • 2.Qe8#
      • 1...Sb4
        • 2.Qe8#
      • 1...Sf4
        • 2.Qe8#
      • 1...Sb6
        • 2.Qe8#
      • 1...Se7
        • 2.d8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • S(b);N_PINP(F)::P=Q
    • S(b);N_PINP(F),SBLOCK::P=S
    • P(f);SBLOCK::R(A)+P(C)DCHECK,XS(b)
  • Tries
    • Try
      • S(I);CHECK,N_SPINP(F)
      • Vars
        • K(e);N_SPINQ(h),P-FLIGHT::P=Q
        • S(b);XS(I)::P=Q
      • Refutation
        • K(e);N_SPINQ(h),P-FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(e);N_PINP(F),N_SPINQ(h),P-FLIGHT::P=Q
      • Refutation
        • B(g);XS(I)
    • Try
      • P(B);CHECK,XS(b)
      • Vars
        • K(e);N_PINP(F),N_SPINQ(h),P-FLIGHT::B(G)
      • Refutation
        • R(a);XP(B)
  • Actual
    • S(I);
    • Threat
      • R(A)+P(C)DCHECK,XS(b)
    • Vars
      • K(e);N_PINP(F),N_SPINQ(h),P-FLIGHT::P=Q
      • S(c);OGATE,P_SPINS(c),XP(C)::R(A),XS(c)
      • S(b);N_PINP(F)::P=Q
      • S(b);N_GUARD::QAR2(H)
      • S(b);N_PINP(F),SBLOCK::P=S
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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).