MESON Chess Problem Database

Problem Display
PID: 273368 (1q2b3/2p5/Bb6/1R5B/Qp4NR/r2k4/PP4PN/1K6 w - - 0 1)

Smith, James Alfred John

British Chess Magazine, 1934

1q2b3/2p5/Bb6/1R5B/Qp4NR/r2k4/PP4PN/1K6

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Se5#
    • 1...Bd4
      • 2.Qc2#
    • 1...b3
      • 2.Rd5#
  • Tries
    • 1.Rxb4+?
      • 1...Bb5
        • 2.Qd1#
        • 2.Qc2#
      • 1...Kd2!
    • 1.Re5+?
      • 1...Kd2
        • 2.Sf1#
        • 2.Re2#
        • 2.Qc2#
      • 1...Kd4
        • 2.Qxb4#
      • 1...Bb5!
    • 1.Qd1+?
      • 1...Kc4
        • 2.Se3#
        • 2.Se5#
        • 2.Qd5#
      • 1...Ke4!
  • Keys
    • 1.Sf1!
      • threat
        • 2.Se5#
      • 1...Ke2
        • 2.Re5#
      • 1...Kc4
        • 2.Se5#
      • 1...Kd4
        • 2.Sf2#
        • 2.Se5#
      • 1...Ke4
        • 2.Sf2#
      • 1...Bxh5
        • 2.Rxb4#
      • 1...Bd4
        • 2.Qc2#
      • 1...c5
        • 2.Sf2#
      • 1...c6
        • 2.Rxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(b);N_GUARD,P_SPINP(c),S_FLIGHT::R(H)+S(G),DCHECK
    • B(d);SBLOCK::QAB1(F)
    • P(c);::B(K)+R(I),DCHECK
  • Tries
    • Try
      • R(I);CHECK,XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(I);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c),S_CUTB(g),S_CUTR(a)::QAR2(F),XP(c)
      • Refutation
        • B(g);P_SPINB(g)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • S(G)
    • Vars
      • K(b);N_GUARD,S_FLIGHT::B(K)+R(I),DCHECK
      • K(b);P_SPINP(c),S_FLIGHT::R(H)+S(G),DCHECK
      • B(g);N_GUARD,XB(J)::B(K)+R(I),XP(c)
      • B(d);SBLOCK::QAB1(F)
      • P(e);S_CUTB(d)::S(G)
      • P(e);S_CUTB(g)::B(K)+R(I),XP(c)
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