MESON Chess Problem Database

Problem Display
PID: 752 (2b1N3/2RN1n1r/BpP4p/1q2RK2/2k2nQ1/P1p2P2/2P2B1b/1r6 w - - 0 1)

Gooderson, Arthur R

Comm., British Chess Magazine, 1948

2b1N3/2RN1n1r/BpP4p/1q2RK2/2k2nQ1/P1p2P2/2P2B1b/1r6

#2

12 + 11

3207 A R Gooderson An English Progressive 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Bxb5#
    • 1...Rc1
      • 2.Bxb5#
    • 1...Rd1
      • 2.Bxb5#
    • 1...Re1
      • 2.Bxb5#
    • 1...Rf1
      • 2.Bxb5#
    • 1...Rg1
      • 2.Bxb5#
    • 1...Rh1
      • 2.Bxb5#
    • 1...Bg1
      • 2.Qxf4#
    • 1...Bb7
      • 2.Sxb6#
      • 2.cxb7#
    • 1...Bxd7+
      • 2.cxd7#
    • 1...Sg5
      • 2.Sd6#
    • 1...Sd6+
      • 2.Sxd6#
    • 1...Sd8
      • 2.Sd6#
    • 1...Sh8
      • 2.Sd6#
  • Tries
    • 1.Rxc8?
      • threat
        • 2.Sxb6#
      • 1...Sd6+
        • 2.Sxd6#
      • 1...Qxa6!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Sd6#
      • 1...Bxd7+
        • 2.cxd7#
      • 1...Rd1
        • 2.Bxb5#
      • 1...Sd5
        • 2.Re4#
      • 1...Se6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • R(a);N_GUARD::B(H),XQ(f)
    • B(b);N_GUARD::QAR(E),XS(e)
    • B(k);CHECK,OGATE,XS(K)::R(J)+P(I),XB(k)
    • S(i);N_GUARD::S(L)
    • S(i);CHECK,N_GUARD::S(L),XS(i)
  • Tries
    • Try
      • R(J);N_SPINS(K),XB(k)
      • Threat
        • S(K),XP(g)
      • Vars
        • S(i);CHECK,N_GUARD::S(L),XS(i)
      • Refutation
        • Q(f);N_PINR(F),N_SPINQ(f),XB(H)
  • Actual
    • Q(E);N_PINS(e),P_PINS(i)
    • Threat
      • S(L)
    • Vars
      • B(k);CHECK,OGATE,XS(K)::R(J)+P(I),XB(k)
      • R(a);N_GUARD::B(H),XQ(f)
      • S(e);N_PINR(F),N_SPINS(i),SBLOCK::R(F)
      • S(e);N_PINS(K),N_SPINS(i)::S(K),XP(g)
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