MESON Chess Problem Database

Problem Display
PID: 195913 (3Bb3/2P2RP1/2nnk2p/2R4P/2PPN3/KQ6/8/8 w - - 0 1)

Looijen, JW

Haagsche Post, 1917

3Bb3/2P2RP1/2nnk2p/2R4P/2PPN3/KQ6/8/8

#2

11 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bd7
      • 2.Rf6#
    • 1...Sb4
      • 2.Re7#
    • 1...Sxd4
      • 2.Re7#
    • 1...Sa5
      • 2.Re7#
    • 1...Sa7
      • 2.Re7#
    • 1...Se7
      • 2.Rxe7#
    • 1...Sb8
      • 2.Re7#
    • 1...Sxd8
      • 2.cxd8S#
    • 1...Sxc4+
      • 2.Qxc4#
    • 1...Sb5+
      • 2.cxb5#
    • 1...Sxf7
      • 2.Qh3#
  • Tries
    • 1.Qh3+?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Kxf7!
  • Keys
    • 1.Rg5!
      • 1...Sxc4+
        • 2.Qxc4#
      • 1...Sb5+
        • 2.cxb5#
      • 1...Kxf7
        • 2.g8Q#
      • 1...Bxf7
        • 2.Sc5#
      • 1...Sxd4
        • 2.Re7#
      • 1...Sxd8
        • 2.cxd8S#
      • 1...Sxe4
        • 2.c5#
      • 1...Sxf7
        • 2.Qh3#
      • 1...hxg5
        • 2.Sxg5#
      • 1...Se7
        • 2.Rxe7#
      • 1...Bd7
        • 2.Rf6#
      • 1...Sb4
        • 2.Re7#
      • 1...Sa5
        • 2.Re7#
      • 1...Se5
        • 2.Re7#
      • 1...Sa7
        • 2.Re7#
      • 1...Sb8
        • 2.Re7#
      • 1...Sf5
        • 2.c5#
      • 1...Sb7
        • 2.c5#
      • 1...Sc8
        • 2.c5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK::R1(I)
    • S(a);N_GUARD::R1(I)
    • S(a);N_GUARD,XP(D)::R1(I)
    • S(a);N_GUARD::R1(I),XS(a)
    • S(a);OGATE,XB(K)::PXS(a)=S
    • S(b);CHECK,OGATE,P_SPINS(b),XP(C)::QAB(B),XS(b)
    • S(b);CHECK,OGATE::QAB(B)+P(C),XS(b)
    • S(b);N_GUARD,SBLOCK,XR(I)::QAB(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(B),XS(b)
      • Refutation
        • K(c);S_FLIGHT,XR(I)
  • Actual
    • R(F);
    • Vars
      • S(b);CHECK,OGATE,P_SPINS(b),XP(C)::QAB(B),XS(b)
      • S(b);CHECK,OGATE::QAB(B)+P(C),XS(b)
      • K(c);S_FLIGHT,XR(I)::P=Q
      • B(e);SBLOCK,XR(I)::S(E)
      • S(a);N_GUARD,XP(D)::R1(I)
      • S(a);OGATE,XB(K)::PXS(a)=S
      • S(b);N_GUARD,XS(E)::QAB(B)+P(C)
      • S(b);N_GUARD,SBLOCK,XR(I)::QAB(B)
      • P(d);XR(F)::S(E),XP(d)
      • S(a);N_GUARD::R1(I),XS(a)
      • B(e);SBLOCK::R1(I)
      • S(a);N_GUARD::R1(I)
      • S(b);N_GUARD::QAB(B)+P(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).