MESON Chess Problem Database

Problem Display
PID: 267136 (K5Nk/1PPP2n1/8/b7/b1QBB3/1r2R3/q7/8 w - - 0 1)

Stanley, Cyril (Kipping, Cyril Stanley)

The Problemist, 1955

K5Nk/1PPP2n1/8/b7/b1QBB3/1r2R3/q7/8

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Rh3#
    • 1...Rb2
      • 2.Rh3#
    • 1...Rb4
      • 2.Rh3#
    • 1...Rxb7
      • 2.Rh3#
    • 1...Bc3
      • 2.Rh3#
  • Tries
    • 1.Qf7?
      • threat
        • 2.Bxg7#
        • 2.Qxg7#
      • 1...Qa1
        • 2.Qxg7#
      • 1...Qb2
        • 2.Qxg7#
      • 1...Bc3
        • 2.Rh3#
        • 2.Qxg7#
      • 1...Qg2!
  • Keys
    • 1.Se7!
      • threat
        • 2.Qg8#
      • 1...Rxe3
        • 2.b8Q#
        • 2.b8R#
      • 1...Rxb7
        • 2.Rh3#
      • 1...Rb1
        • 2.Rh3#
      • 1...Rb2
        • 2.Rh3#
      • 1...Ra3
        • 2.b8Q#
        • 2.b8R#
      • 1...Rc3
        • 2.b8Q#
        • 2.b8R#
      • 1...Rd3
        • 2.b8Q#
        • 2.b8R#
      • 1...Rb4
        • 2.Rh3#
      • 1...Rb5
        • 2.d8Q#
        • 2.d8R#
      • 1...Rb6
        • 2.c8Q#
        • 2.c8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD::R(A)
    • R(b);N_GUARD,XP(E)::R(A)
    • B(d);S_CUTR(b)::R(A)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::QAB1(B),XS(e)
      • Refutation
        • Q(a);
  • Actual
    • S(I);
    • Threat
      • QAR1(B)
    • Vars
      • R(b);N_GUARD,XR(A)::P=Q
      • R(b);N_GUARD,XP(E)::R(A)
      • R(b);N_GUARD::R(A)
      • R(b);N_GUARD::P=Q
      • R(b);S_CUTB(c)::P=Q
      • R(b);S_CUTB(d)::P=Q
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