MESON Chess Problem Database

Problem Display
PID: 747 (8/n1K3p1/QBp5/1q3R2/4B3/7p/R4N2/5k2 w - - 0 1)

Gooderson, Arthur R

British Chess Magazine, 1948

8/n1K3p1/QBp5/1q3R2/4B3/7p/R4N2/5k2

#2

7 + 6

3207 A R Gooderson An English Progressive 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Kg1
      • 2.Sxh3#
    • 1...Qe2
      • 2.Ra1#
    • 1...Qd3
      • 2.Sxd3#
    • 1...Qc4
      • 2.Sd3#
    • 1...Qxa6
      • 2.Sd3#
  • Tries
    • 1.Ba5?
      • threat
        • 2.Sxh3#
      • 1...Kg1
        • 2.Sxh3#
      • 1...h2
        • 2.Sh3#
      • 1...g6!
    • 1.Qxb5+?
      • 1...Ke1
        • 2.Ba5#
        • 2.Qe2#
        • 2.Qb1#
      • 1...Kg1
        • 2.Sxh3#
      • 1...cxb5
        • 2.Sd3#
      • 1...Sxb5+!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Qa1#
      • 1...Ke1
        • 2.Qa1#
      • 1...Kg1
        • 2.Sxh3#
      • 1...Qxa6
        • 2.Sd3#
      • 1...Qe2
        • 2.Rb1#
      • 1...Qd3
        • 2.Sxd3#
      • 1...Qc4
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINQ(c),P-FLIGHT::B(F)+S(B),DCHECK,XP(b)
    • Q(c);::R(A)
    • Q(c);N_GUARD::R(D)+S(B),XQ(c)
    • Q(c);N_GUARD::R(D)+S(B)
    • Q(c);N_GUARD,N_SPINQ(c),XQ(E)::R(D)+S(B)
  • Tries
    • Try
      • B(F);
      • Threat
        • R(D)+S(B),XP(b)
      • Vars
        • K(a);N_SPINQ(c),P-FLIGHT::S(B),XP(b)
        • P(b);::R(D)+S(B)
      • Refutation
        • P(f);
    • Try
      • Q(E);CHECK,XQ(c)
      • Vars
        • K(a);P-FLIGHT::B(F)+S(B),DCHECK,XP(b)
        • P(d);XQ(E)::R(D)+S(B)
      • Refutation
        • S(e);CHECK,XQ(E)
  • Actual
    • R(A);
    • Threat
      • QAR(E)
    • Vars
      • K(a);N_SPINQ(c),P-FLIGHT::QAR(E)
      • K(a);N_SPINQ(c),P-FLIGHT::B(F)+S(B),DCHECK,XP(b)
      • Q(c);N_GUARD,N_SPINQ(c),XQ(E)::R(D)+S(B)
      • Q(c);::R(A)
      • Q(c);N_GUARD::R(D)+S(B),XQ(c)
      • Q(c);N_GUARD::R(D)+S(B)
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