MESON Chess Problem Database

Problem Display
PID: 87502 (5Rq1/5p1B/K1Q3rB/p1pN1k2/4nP1b/3P1R1P/8/4r3 w - - 0 1)

Eaton, Vincent Lanius

American Chess Problemist, 1950

5Rq1/5p1B/K1Q3rB/p1pN1k2/4nP1b/3P1R1P/8/4r3

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh8
      • 2.Bxg6#
      • 2.Qxg6#
    • 1...Ra1
      • 2.Se3#
    • 1...Rb1
      • 2.Se3#
    • 1...Rc1
      • 2.Se3#
    • 1...Rd1
      • 2.Se3#
    • 1...Rf1
      • 2.Se3#
    • 1...Rg1
      • 2.Se3#
    • 1...Rh1
      • 2.Se3#
    • 1...Re3
      • 2.Sxe3#
    • 1...Bf2
      • 2.Se7#
    • 1...Bg3
      • 2.Se7#
    • 1...Bf6
      • 2.Qd7#
      • 2.Qc8#
    • 1...Be7
      • 2.Sxe7#
    • 1...Sg5
      • 2.Qf6#
    • 1...f6
      • 2.Se7#
  • Keys
    • 1.Re3!
      • threat
        • 2.dxe4#
      • 1...Rxe3
        • 2.Sxe3#
      • 1...Sd2
        • 2.Qe6#
      • 1...Sf2
        • 2.Qe6#
      • 1...Sc3
        • 2.Qe6#
      • 1...Sg3
        • 2.Qe6#
      • 1...Sg5
        • 2.Qf6#
      • 1...Sd6
        • 2.Qd7#
      • 1...Sf6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 11
  • Sets
    • R(a);N_GUARD::S(E)
    • R(a);N_GUARD::S(E),XR(a)
    • B(c);N_GUARD::S(E)
    • B(c);N_GUARD::S(E),XB(c)
    • S(b);N_GUARD,S_CUTB(c)::QAR1(G)
    • P(h);N_PINQ(G),S_CUTB(c)::S(E)
  • Actual
    • R(B);
    • Threat
      • P(A),XS(b)
    • Vars
      • R(a);XR(B)::S(E),XR(a)
      • S(b);::QAB1(G)
      • S(b);N_GUARD,S_CUTB(c)::QAR1(G)
      • S(b);N_PINQ(G)::QAB(G)
      • S(b);N_PINQ(G),N_SPINP(h),S_CUTB(c)::S(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).