MESON Chess Problem Database

Problem Display
PID: 58061 (2b5/RR1p2Q1/1Nk4r/1p2b3/1B6/7p/4K3/8 w - - 0 1)

Smedley, Don A

9th HM., Gamage MT (Chess Life), 1957-1958

2b5/RR1p2Q1/1Nk4r/1p2b3/1B6/7p/4K3/8

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qc3#
    • 1...Bc3
      • 2.Qxc3#
    • 1...Bg3
      • 2.Qc3#
    • 1...Bf4
      • 2.Qc3#
    • 1...Bc7
      • 2.Qc3#
    • 1...Bb8
      • 2.Qc3#
    • 1...d6
      • 2.Qc7#
  • Tries
    • 1.Rc7+?
      • 1...Kxb6
        • 2.Ba5#
        • 2.Bc5#
      • 1...Bxc7!
    • 1.Qxe5?
      • threat
        • 2.Qc3#
        • 2.Qc7#
        • 2.Qc5#
        • 2.Qd5#
      • 1...Bxb7
        • 2.Qc5#
      • 1...Rh4
        • 2.Qd6#
        • 2.Qc7#
        • 2.Qc5#
        • 2.Qd5#
      • 1...Rh5
        • 2.Qd6#
        • 2.Qc7#
      • 1...Rd6
        • 2.Qc3#
        • 2.Qxd6#
        • 2.Qc5#
      • 1...d5
        • 2.Qc3#
        • 2.Qc7#
        • 2.Qxd5#
      • 1...d6
        • 2.Qc3#
        • 2.Qd5#
      • 1...Re6!
    • 1.Qg1?
      • threat
        • 2.Qc5#
      • 1...Bd6
        • 2.Qh1#
      • 1...d6
        • 2.Rc7#
      • 1...Bd4!
    • 1.Qg2+?
      • 1...d5
        • 2.Qxd5#
      • 1...hxg2!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qc5#
      • 1...Rd6
        • 2.Qxc8#
      • 1...Bd4
        • 2.Qxc8#
      • 1...Bd6
        • 2.Qf3#
      • 1...d6
        • 2.Qxc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(c);OGATE::QAR(F)
    • B(c);OGATE::QAR(F),XB(c)
    • P(f);OGATE::QAR1(F)
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • B(c);XR(E)
    • Try
      • Q(F);XB(c)
      • Threat
        • DUALS(4)
      • Vars
        • B(g);XR(E)::QAR1(F)
      • Refutation
        • R(e);P_PINQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • B(c);S_CUTP(f)::QAB(F)
        • P(f);S_CUTB(c)::R1(E)
      • Refutation
        • B(c);
    • Try
      • Q(F);CHECK
      • Vars
        • P(f);P_SPINP(f)::QAB1(F),XP(f)
      • Refutation
        • P(a);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • R(e);S_CUTB(c)::QAR2(F),XB(g)
      • B(c);N_GUARD::QAR2(F),XB(g)
      • B(c);S_CUTP(f)::QAB(F)
      • P(f);S_CUTB(c)::QAR2(F),XB(g)
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