MESON Chess Problem Database

Problem Display
PID: 248607 (1B4QK/7B/5p2/1p2Nrb1/1R1Pk1p1/3Rp2n/b2PP3/1n5r w - - 0 1)

Eddy, Edwin John

British Chess Magazine, 1932

1B4QK/7B/5p2/1p2Nrb1/1R1Pk1p1/3Rp2n/b2PP3/1n5r

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.d5#
    • 1...Bf7
      • 2.d5#
    • 1...Bxg8
      • 2.d5#
    • 1...Sf4
      • 2.Rxe3#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Sc5#
      • 1...Bxg8
        • 2.d5#
      • 1...Be6
        • 2.Qxe6#
        • 2.d5#
      • 1...Bf7
        • 2.d5#
      • 1...Rc1!
    • 1.Rxe3+?
      • 1...Kf4
        • 2.Sd3#
        • 2.Sg6#
      • 1...Bxe3!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Sc4#
      • 1...Kf4
        • 2.Sg6#
      • 1...Bxe6
        • 2.d5#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Bc4
        • 2.Sxc4#
      • 1...Bd5
        • 2.Qxf5#
      • 1...Bf4
        • 2.Bxf5#
      • 1...Sf4
        • 2.Rxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(c);N_GUARD::R(D)+P(E)
    • B(c);N_GUARD,XQ(I)::R(D)+P(E)
    • S(e);P_PINB(G),SBLOCK,S_CUTB(j)::R1(C),XP(d)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • B(c);N_GUARD,XQ(I)::R(D)+P(E)
        • B(c);N_GUARD::R(D)+P(E)
      • Refutation
        • R(b);
    • Try
      • R(C);CHECK,XP(d)
      • Refutation
        • B(j);XR(C)
  • Actual
    • Q(I);
    • Threat
      • QAR(I)+S(F)
    • Vars
      • K(f);N_SPINR(i),P-FLIGHT::B(H)+S(F),DCHECK
      • B(c);N_GUARD,XQ(I)::R(D)+P(E)
      • P(k);OGATE,P_SPINP(k),XS(F)::QAR1(I),XP(k)
      • B(c);::QAR(I)+S(F),XB(c)
      • B(c);SBLOCK::QAB1(I),XR(i)
      • B(j);SBLOCK::B(G),XR(i)
      • S(e);P_PINB(G),SBLOCK,S_CUTB(j)::R1(C),XP(d)
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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).