MESON Chess Problem Database

Problem Display
PID: 11042 (1B6/3p4/2p3K1/4N1N1/2r2k1p/3R1r2/3PnqnP/4Q1R1 w - - 0 1)

Eaton, Vincent Lanius

Chess, 1936

1B6/3p4/2p3K1/4N1N1/2r2k1p/3R1r2/3PnqnP/4Q1R1

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe1
      • 2.Rxf3#
    • 1...Qxg1
      • 2.Rxf3#
    • 1...Qd4
      • 2.Rxf3#
    • 1...Qc5
      • 2.Rxf3#
    • 1...Qb6
      • 2.Rxf3#
    • 1...Qa7
      • 2.Rxf3#
    • 1...Sg3
      • 2.Sh3#
    • 1...Sd4
      • 2.Qe4#
    • 1...Sxe1
      • 2.Sxd7#
      • 2.Rg4#
    • 1...Se3
      • 2.Sxd7#
  • Tries
    • 1.Sexf3+?
      • 1...Kg4
        • 2.h3#
      • 1...d6!
    • 1.Sef7+?
      • 1...Kg4
        • 2.Sh6#
      • 1...d6!
    • 1.Rxd7?
      • threat
        • 2.Rf7#
      • 1...Sg3
        • 2.Sh3#
        • 2.Se6#
      • 1...Sd4
        • 2.Qe4#
      • 1...Se3
        • 2.Sd3#
        • 2.Sexf3#
        • 2.Sxc4#
        • 2.Sg4#
        • 2.Sxc6#
        • 2.Sef7#
      • 1...Qa7!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Rf6#
      • 1...Kxe5
        • 2.Rxd7#
      • 1...Sg3
        • 2.Sh3#
      • 1...Sd4
        • 2.Qe4#
      • 1...Se3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD,XQ(A)::R1(E),XR(d)
    • Q(b);N_GUARD,XR(B)::R1(E),XR(d)
    • Q(b);N_GUARD::R1(E),XR(d)
    • S(a);S_CUTR(d)::S(G)
    • S(a);OGATE::QAR1(A)
    • S(c);::B(I)+S(F),XP(i)
  • Tries
    • Try
      • S(F);CHECK,XR(d)
      • Vars
        • K(f);P-FLIGHT,P_SPINS(c)::P(D)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • S(F);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINS(c)::S(F)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • R(E);XP(i)
      • Threat
        • R(E)
      • Vars
        • S(a);OGATE::QAR1(A)
      • Refutation
        • Q(b);
  • Actual
    • R(E);
    • Threat
      • R(E)
    • Vars
      • K(f);OGATEB,P_SPINS(a),S_FLIGHT,XS(F)::B(I)+R(E),XP(i)
      • S(a);S_CUTR(d)::S(G)
      • S(a);OGATE::QAR1(A)
      • S(c);S_CUTR(d)::S(F)
HTML5 logo

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).