MESON Chess Problem Database

Problem Display
PID: 18061 (R7/3N2bK/1p1p1p1n/BkrQ3R/4N3/1P1q4/1nb1B3/8 w - - 0 1)

Gooderson, Arthur R

Bonavia-Hunt Research Pamphlet 11, 1953

R7/3N2bK/1p1p1p1n/BkrQ3R/4N3/1P1q4/1nb1B3/8

#2

9 + 10

3207 A R Gooderson An English Progressive 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Sc3#
    • 1...bxa5
      • 2.Qb7#
    • 1...f5
      • 2.Sxd6#
  • Tries
    • 1.Sxc5?
      • threat
        • 2.Sxd3#
        • 2.Sa4#
        • 2.Sa6#
        • 2.Se6#
        • 2.Sb7#
        • 2.Sd7#
      • 1...Qxe2
        • 2.Sd3#
        • 2.Sa4#
        • 2.Sa6#
        • 2.Se6#
        • 2.Sb7#
        • 2.Sd7#
      • 1...bxa5
        • 2.Rb8#
        • 2.Qb7#
      • 1...bxc5
        • 2.Qb7#
      • 1...dxc5
        • 2.Qd7#
      • 1...Qc4
        • 2.Sa4#
        • 2.Sa6#
        • 2.Se6#
        • 2.Sb7#
        • 2.Sd7#
      • 1...Sa4
        • 2.Sxa4#
      • 1...Sc4
        • 2.Sxd3#
      • 1...Bxb3!
    • 1.Bxd3+?
      • 1...Sxd3
        • 2.Sc3#
        • 2.Sxd6#
      • 1...Sc4
        • 2.Sc3#
        • 2.Sxd6#
        • 2.Bxc4#
      • 1...Bxd3!
  • Keys
    • 1.Sb8!
      • threat
        • 2.Qc6#
      • 1...Rxd5
        • 2.Rxd5#
      • 1...Bxb3
        • 2.Qxb3#
      • 1...bxa5
        • 2.Qb7#
      • 1...Sf5
        • 2.Sc3#
      • 1...f5
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(i);N_PINS(C)::S(C)
    • P(f);OGATEB,XB(D)::QAR2(E)
    • P(h);N_PINS(C)::S(C),XP(g)
  • Tries
    • Try
      • S(G);XR(e)
      • Threat
        • DUALS(6)
      • Vars
        • P(f);OGATEB,P_SPINP(f),XS(G)::QAR2(E)
        • P(g);OGATE,P_SPINP(g),XS(G)::QAB(E)
        • S(a);::QAR(E)+S(G),XS(a)
        • S(a);N_SPINQ(c)::QAR(E)+S(G),XQ(c)
      • Refutation
        • B(b);XP(B)
    • Try
      • B(A);CHECK,N_SPINS(C),XQ(c)
      • Refutation
        • B(b);P_PINS(C),XB(A)
  • Actual
    • S(G);
    • Threat
      • QAB1(E)
    • Vars
      • R(e);OGATE,XQ(E)::R(F),XR(e)
      • B(b);OGATE,XP(B)::QAR2(E),XB(b)
      • P(f);OGATEB,XB(D)::QAR2(E)
      • S(i);N_PINS(C)::S(C)
      • P(h);N_PINS(C)::S(C),XP(g)
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