MESON Chess Problem Database

Problem Display
PID: 275707 (1B5K/6p1/8/8/2Q3Bk/4N2N/r7/1b4n1 w - - 0 1)

Ventura, Jose

Probleemblad, 1953

1B5K/6p1/8/8/2Q3Bk/4N2N/r7/1b4n1

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sg2#
    • 1...Rc2
      • 2.Sf5#
    • 1...Rg2
      • 2.Sxg2#
    • 1...Ra3
      • 2.Sg2#
    • 1...Ra4
      • 2.Sg2#
    • 1...Ra5
      • 2.Sg2#
    • 1...Ra6
      • 2.Sg2#
    • 1...Ra7
      • 2.Sg2#
    • 1...Ra8
      • 2.Sg2#
    • 1...Bc2
      • 2.Sg2#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Se2
      • 2.Sg2#
  • Tries
    • 1.Bd1+?
      • 1...Kxh3
        • 2.Qg4#
      • 1...Be4!
    • 1.Be2+?
      • 1...Kxh3
        • 2.Qg4#
      • 1...Be4!
    • 1.Bf3+?
      • 1...Kxh3
        • 2.Qg4#
      • 1...Be4!
    • 1.Qf4?
      • threat
        • 2.Qg3#
        • 2.Qg5#
      • 1...Rg2
        • 2.Sxg2#
        • 2.Qg5#
      • 1...Ra5
        • 2.Sg2#
        • 2.Qg3#
        • 2.Qf2#
      • 1...Se2
        • 2.Sg2#
        • 2.Qg5#
      • 1...Sf3
        • 2.Qg3#
      • 1...g5
        • 2.Qg3#
        • 2.Qxg5#
      • 1...Sxh3!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qh5#
      • 1...Ra5
        • 2.Qf2#
      • 1...Bg6
        • 2.Qe7#
      • 1...g6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • R(c);N_GUARD::S(A)
    • R(c);S_CUTB(a)::S(A)
    • R(c);N_GUARD::S(A),XR(c)
    • R(c);N_GUARD,SBLOCK::S(A)
    • R(c);N_GUARD,P_PINB(E)::S(A)
    • B(a);S_CUTR(c)::S(A)
    • B(a);N_GUARD::S(A),XB(a)
    • S(b);S_CUTR(c)::S(A)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(d);P-FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • B(D);CHECK
      • Vars
        • K(d);P-FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • B(D);CHECK
      • Vars
        • K(d);P-FLIGHT,XS(B)::QAB1(C)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::QAB1(C)
      • Refutation
        • S(b);XS(B)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • R(c);N_GUARD,SBLOCK::QAB(C)
      • B(a);S_CUTP(e)::QAB(C)
      • P(e);OGATE::QAR(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).