MESON Chess Problem Database

Problem Display
PID: 260 (b2B4/2b4p/1p4pR/8/2Q2rkN/R5Np/K3P3/3B4 w - - 0 1)

Gooderson, Arthur R

The Observer, 1950

(First published on Sun Jun 25 1950)

b2B4/2b4p/1p4pR/8/2Q2rkN/R5Np/K3P3/3B4

#2

9 + 8

3207 A R Gooderson An English Progressive 1996
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sxg6?
      • threat
        • 2.Rh4#
      • 1...Bxd8
        • 2.Qxf4#
      • 1...Bf3!
    • 1.Qxf4+?
      • 1...Bxf4
        • 2.e4#
      • 1...Kxf4!
  • Keys
    • 1.Sh5!
      • threat
        • 2.Rg3#
      • 1...Rxc4
        • 2.e4#
      • 1...Bxd8
        • 2.Qxf4#
      • 1...gxh5
        • 2.Qg8#
      • 1...g5
        • 2.Sf6#
      • 1...Rd4
        • 2.Qe6#
      • 1...Re4
        • 2.e3#
      • 1...Bf3
        • 2.exf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);XP(e)
      • Threat
        • R1(H)
      • Vars
        • B(f);N_GUARD,XB(I)::QAR1(F),XR(b)
      • Refutation
        • B(h);
    • Try
      • Q(F);CHECK,XR(b)
      • Vars
        • B(f);SBLOCK,XQ(F)::B(A)+P(C)
      • Refutation
        • K(c);P-FLIGHT,XQ(F)
  • Actual
    • S(E);
    • Threat
      • R1(D)
    • Vars
      • R(b);N_GUARD,N_SPINR(b),XQ(F)::B(A)+P(C)
      • B(f);N_GUARD,XB(I)::QAR1(F),XR(b)
      • P(e);OGATEB,XS(E)::QAR(F)
      • P(e);SBLOCK::S(E)
      • R(b);N_GUARD::QAB(F)
      • R(b);S_CUTB(h)::B(A)+P(C)
      • B(h);OGATE::P(C),XB(h)
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