MESON Chess Problem Database

Problem Display
PID: 10264 (2K2n1B/b1Q1N3/3Pk1Pp/4rppP/4r1n1/2N2B1P/b7/4RR2 w - - 0 1)

Gooderson, Arthur R

Evening Standard, 1963

2K2n1B/b1Q1N3/3Pk1Pp/4rppP/4r1n1/2N2B1P/b7/4RR2

#2

12 + 10

3207 A R Gooderson An English Progressive 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Bd5#
    • 1...Sd7
      • 2.Qxd7#
    • 1...Sh7
      • 2.Qd7#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Sd8#
        • 2.Qe7#
      • 1...Sxg6
        • 2.Sd8#
        • 2.Qd7#
      • 1...Sd7
        • 2.Sd8#
        • 2.Qxd7#
      • 1...f4!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Qf7#
      • 1...Kxf5
        • 2.Bxg4#
      • 1...Rxf5
        • 2.Qe7#
      • 1...Sxg6
        • 2.Qd7#
      • 1...Rc4
        • 2.Bd5#
      • 1...Rc5
        • 2.Sd4#
      • 1...Sf6
        • 2.Sg7#
      • 1...Sd7
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE,P_PINQ(I),P_SPINR(d)::B(D)
    • S(j);N_GUARD::QAB1(I),XS(j)
    • S(j);N_GUARD::QAB1(I)
  • Tries
    • Try
      • S(J);
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);
  • Actual
    • S(J);XP(e)
    • Threat
      • QAB1(I)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XS(J)::R(B)+B(D),DCHECK,XS(c)
      • R(d);P_SPINR(b),SBLOCK,XS(J)::QAR1(I)
      • S(j);N_GUARD,XP(H)::QAB1(I)
      • R(b);OGATE,P_PINQ(I),P_SPINR(d)::B(D)
      • R(d);P_PINQ(I),P_SPINR(b),S_CUTB(i)::S(J)
      • S(c);SBLOCK::S(J)
      • S(j);N_GUARD::QAB1(I),XS(j)
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