MESON Chess Problem Database

Problem Display
PID: 692 (1b2Rn1q/1Pk1Pp2/1R2bn1p/P2p4/3Np3/8/2B5/KQ6 w - - 0 1)

Smith, James Alfred John

1st Prize, British Chess Magazine, 1934

1b2Rn1q/1Pk1Pp2/1R2bn1p/P2p4/3Np3/8/2B5/KQ6

#2

9 + 10

3098 FIDE Album (1914-1944) (I) 1971
14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Bc8
      • 2.bxc8Q#
    • 1...S6d7
      • 2.Rc6#
      • 2.Rc8#
    • 1...S8d7
      • 2.Sb5#
      • 2.Rc6#
  • Tries
    • 1.Ba4?
      • threat
        • 2.Qc2#
        • 2.Qc1#
      • 1...S6d7
        • 2.Rc6#
        • 2.Rc8#
      • 1...S8d7
        • 2.Sb5#
        • 2.Rc6#
      • 1...Bd7!
    • 1.Rd8?
      • threat
        • 2.Sb5#
        • 2.Rc6#
      • 1...Sg4
        • 2.Rc6#
      • 1...Sh5
        • 2.Rc6#
      • 1...S6d7
        • 2.Rc6#
        • 2.Rc8#
      • 1...S6h7
        • 2.Rc6#
      • 1...Se8
        • 2.Rc6#
      • 1...Sg8
        • 2.Rc6#
      • 1...Bd7!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Ba4#
      • 1...Kd7
        • 2.Ba4#
      • 1...Bd7
        • 2.Qf4#
      • 1...S6d7
        • 2.Rc8#
      • 1...S8d7
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(c);OGATE::PXB(c)=Q
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Refutation
        • B(c);
    • Try
      • R(I);
      • Threat
        • DUALS(2)
      • Vars
        • S(d);P_PINS(D)::R1(F)
      • Refutation
        • B(c);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)+B(C)
    • Vars
      • K(f);P-FLIGHT::B(C)
      • B(c);SBLOCK::QAB(B)
      • S(d);P_PINS(D),SBLOCK,S_CUTB(c)::R1(I)
      • S(i);SBLOCK::S(D)
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