MESON Chess Problem Database

Problem Display
PID: 251357 (8/4NPP1/3k1p2/B1N1qR2/3pRP2/1B1p4/3Q1K2/8 w - - 0 1)

Hoek, Willem

Probleemblad, 1982

8/4NPP1/3k1p2/B1N1qR2/3pRP2/1B1p4/3Q1K2/8

#2

11 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Qb4#
    • 1...Kxe7
      • 2.f8Q#
    • 1...Qxf4+
      • 2.Qxf4#
    • 1...Qd5
      • 2.Rxd5#
    • 1...Qe6
      • 2.Rxe6#
  • Tries
    • 1.Bc7+?
      • 1...Kxc5
        • 2.Qa5#
      • 1...Kxe7
        • 2.f8Q#
      • 1...Kxc7!
    • 1.fxe5+?
      • 1...Kxc5
        • 2.Qb4#
      • 1...Kxe7
        • 2.f8Q#
      • 1...fxe5!
    • 1.f8Q?
      • 1...Qxf4+
        • 2.Qxf4#
      • 1...Kxc5
        • 2.Qb4#
      • 1...Qxe4
        • 2.Qd8#
      • 1...Qxc5
        • 2.Qd8#
      • 1...Qxe7
        • 2.Re6#
      • 1...Qd5
        • 2.Rxd5#
      • 1...Qe6
        • 2.Rxe6#
      • 1...Qxf5!
  • Keys
    • 1.Ba4!
      • 1...Qxf4+
        • 2.Qxf4#
      • 1...Kxc5
        • 2.Qb4#
      • 1...Kxe7
        • 2.f8Q#
      • 1...Qxe4
        • 2.Sc8#
      • 1...Qxc5
        • 2.Rxf6#
      • 1...Qxf5
        • 2.Sb7#
      • 1...Qxe7
        • 2.Rxd4#
      • 1...Qd5
        • 2.Rxd5#
      • 1...Qe6
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);OGATEB,P_SPINQ(c),S_FLIGHT,XS(G)::QAB1(A)
    • K(d);P_SPINQ(c),S_FLIGHT,XS(I)::P=Q
    • Q(c);CHECK,OGATE,XP(E)::QAB(A),XQ(c)
    • Q(c);OGATE::R1(H),XQ(c)
    • Q(c);OGATE::R1(D),XQ(c)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(d);N_GUARD,P_SPINQ(c),S_FLIGHT,XS(G)::QAR2(A)
        • K(d);N_GUARD,P_SPINQ(c),S_FLIGHT,XS(I)::P=Q
      • Refutation
        • K(d);S_FLIGHT,XB(F)
    • Try
      • P(E);CHECK,XQ(c)
      • Vars
        • K(d);N_GUARD,S_CUTP(e),S_FLIGHT,XS(G)::QAB1(A)
        • K(d);N_GUARD,S_CUTP(e),S_FLIGHT,XS(I)::P=Q
      • Refutation
        • P(e);XP(E)
    • Try
      • P(J);
      • Vars
        • Q(c);CHECK,OGATE,XP(E)::QAB(A),XQ(c)
        • K(d);OGATEB,P_SPINQ(c),S_FLIGHT,XS(G)::QAB1(A)
        • Q(c);XR(D)::QAR2(J)
        • Q(c);XS(G)::QAR2(J)
        • Q(c);OGATE,P_SPINQ(c),XS(I)::R1(D)
        • Q(c);OGATE::R1(H),XQ(c)
        • Q(c);OGATE::R1(D),XQ(c)
      • Refutation
        • Q(c);P_PINP(E),XR(H)
  • Actual
    • B(C);
    • Vars
      • Q(c);CHECK,OGATE,XP(E)::QAB(A),XQ(c)
      • K(d);OGATEB,P_SPINQ(c),S_FLIGHT,XS(G)::QAB1(A)
      • K(d);P_SPINQ(c),S_FLIGHT,XS(I)::P=Q
      • Q(c);XR(D)::S(I)
      • Q(c);N_GUARD,SBLOCK,XS(G)::R(H),XP(e)
      • Q(c);P_PINP(E),XR(H)::S(G)
      • Q(c);N_GUARD,SBLOCK,XS(I)::R(D),XP(b)
      • Q(c);OGATE::R1(H),XQ(c)
      • Q(c);OGATE::R1(D),XQ(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).