MESON Chess Problem Database

Problem Display
PID: 12386 (8/5pN1/Kb3BP1/n1r1p3/RN2Qqk1/3p4/3rb1PP/3Bn3 w - - 0 1)

Gooderson, Arthur R

The Problemist, 1978

8/5pN1/Kb3BP1/n1r1p3/RN2Qqk1/3p4/3rb1PP/3Bn3

#2

10 + 11

133 The Problemist Supplement 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qf5#
      • 1...Qxe4
        • 2.Rxe4#
      • 1...Sxg2
        • 2.Qxg2#
      • 1...fxg6
        • 2.Qxg6#
      • 1...Rc4
        • 2.Sxe5#
      • 1...Sc4!
    • 1.Qxf4+?
      • 1...Kxf4
        • 2.Sd5#
      • 1...exf4!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Qf5#
      • 1...Qxe4
        • 2.Rxe4#
      • 1...Sxg2
        • 2.Qxg2#
      • 1...fxg6
        • 2.Qxg6#
      • 1...Rc4
        • 2.Sxe5#
      • 1...Sc4
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(F)
      • Vars
        • Q(e);OGATE,XQ(F)::R(D),XQ(e)
        • S(a);OGATE,XP(B)::QAR2(F),XS(a)
        • P(k);OGATE,XP(I)::QAR2(F),XP(k)
        • R(h);N_GUARD::S(E),XP(i)
      • Refutation
        • S(g);
    • Try
      • Q(F);CHECK,XQ(e)
      • Vars
        • K(f);N_SPINB(c),P-FLIGHT,XQ(F)::R(D)+S(E),DCHECK
      • Refutation
        • P(i);XQ(F)
  • Actual
    • S(E);P_SPINS(E),XP(d)
    • Threat
      • QAB1(F)
    • Vars
      • Q(e);OGATE,XQ(F)::R(D),XQ(e)
      • S(a);OGATE,XP(B)::QAR2(F),XS(a)
      • P(k);OGATE,XP(I)::QAR2(F),XP(k)
      • R(h);N_PINS(E)::S(E),XP(i)
      • S(g);N_PINS(E)::S(E)
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