MESON Chess Problem Database

Problem Display
PID: 106719 (2r5/8/3BB1p1/2p1nbQ1/N3kP2/2R1r2R/4P3/K2n3N w - - 0 1)

Allison, Christopher John

The Field, 1954

(First published on Thu Aug 19 1954)

2r5/8/3BB1p1/2p1nbQ1/N3kP2/2R1r2R/4P3/K2n3N

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxh3
      • 2.Qxe5#
    • 1...Bg4
      • 2.Qxe5#
    • 1...Bxe6
      • 2.Qxe5#
    • 1...Sd3
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...Sg4
      • 2.Rc4#
    • 1...Sd7
      • 2.Rc4#
    • 1...Sf7
      • 2.Rc4#
  • Tries
    • 1.Rcxe3+?
      • 1...Kd4
        • 2.Bxe5#
      • 1...Sxe3!
    • 1.Rhxe3+?
      • 1...Kd4
        • 2.Bxe5#
      • 1...Sxe3!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxe5#
      • 1...Kd4
        • 2.Rc4#
      • 1...Kxf4
        • 2.Rh4#
      • 1...Sd3
        • 2.Rc4#
      • 1...Sf3
        • 2.Sg3#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sg4
        • 2.Rc4#
      • 1...Sc6
        • 2.Sxc5#
      • 1...Sd7
        • 2.Rc4#
      • 1...Sf7
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(f);OGATE,XR(E)::QAR1(H),XS(e)
    • B(f);OGATE::QAR1(H),XS(e)
    • B(f);OGATE,XB(J)::QAR1(H),XS(e)
    • S(e);N_GUARD::R(D)
    • S(e);N_GUARD::R(D),XS(e)
  • Tries
    • Try
      • R(D);CHECK,XR(b)
      • Vars
        • K(c);P-FLIGHT::B(I),XS(e)
      • Refutation
        • S(a);XR(D)
    • Try
      • R(E);CHECK,XR(b)
      • Vars
        • K(c);P-FLIGHT::B(I),XS(e)
      • Refutation
        • S(a);XR(E)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XS(e)
    • Vars
      • K(c);P-FLIGHT,P_SPINS(e)::R1(D)
      • K(c);OGATEB,P-FLIGHT,P_SPINB(f),P_SPINS(e),XP(G)::R(E)
      • S(e);N_GUARD::R(D)
      • S(e);S_CUTR(b)::S(B)
      • S(e);N_GUARD::R(D),XS(e)
      • S(e);S_CUTR(h)::S(F),XP(d)
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