MESON Chess Problem Database

Problem Display
PID: 18052 (1R6/p3N2K/B2Np3/P1k1B2Q/2q5/1ppp4/n7/6b1 w - - 0 1)

Gooderson, Arthur R

3rd HM., American Chess Bulletin, 1953

1R6/p3N2K/B2Np3/P1k1B2Q/2q5/1ppp4/n7/6b1

#2

8 + 9

3207 A R Gooderson An English Progressive 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Rxb5#
    • 1...Qd5
      • 2.Rb5#
    • 1...Qb4
      • 2.Rc8#
    • 1...Qd4
      • 2.Rb5#
    • 1...Qe4+
      • 2.Sxe4#
    • 1...Qf4
      • 2.Rb5#
    • 1...Qg4
      • 2.Rb5#
    • 1...Qh4
      • 2.Rb5#
    • 1...Bd4
      • 2.Se4#
    • 1...Sb4
      • 2.Sb7#
  • Tries
    • 1.Bxc3+?
      • 1...Qd5
        • 2.Se4#
        • 2.Sb7#
      • 1...e5
        • 2.Sb7#
      • 1...Kxd6!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qxc4#
      • 1...Qe4+
        • 2.Sxe4#
      • 1...Qxa6
        • 2.Qxg1#
      • 1...Qxg4
        • 2.Rb5#
      • 1...Qb5
        • 2.Rxb5#
      • 1...Qd5
        • 2.Rb5#
      • 1...Qa4
        • 2.Sb7#
      • 1...Qb4
        • 2.Rc8#
      • 1...Qd4
        • 2.Rb5#
      • 1...Qf4
        • 2.Rb5#
      • 1...Bd4
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(f);N_GUARD::R1(H),XQ(f)
    • Q(f);N_GUARD::R1(H)
    • Q(f);SBLOCK::R(H)
    • Q(f);CHECK,N_GUARD::S(E),XQ(f)
    • Q(f);N_GUARD,P_PINQ(C)::R1(H)
    • B(a);S_CUTQ(f)::S(E)
    • S(b);SBLOCK::S(E)
  • Tries
    • Try
      • B(B);CHECK,XP(d)
      • Vars
        • P(h);P_SPINP(h)::S(E)
      • Refutation
        • K(g);S_FLIGHT,XS(E)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XQ(f)
    • Vars
      • Q(f);CHECK,N_GUARD::S(E),XQ(f)
      • Q(f);N_GUARD,XB(D)::QAB(C),XB(a)
      • Q(f);N_GUARD,XQ(C)::R1(H)
      • Q(f);N_GUARD::R1(H),XQ(f)
      • Q(f);N_GUARD::R1(H)
      • Q(f);::S(E)
      • Q(f);::R(H)
      • B(a);S_CUTQ(f)::S(E)
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