MESON Chess Problem Database

Problem Display
PID: 137369 (1qrrb1Bb/1p1p4/1R5N/4k1Pp/3N4/2Qp1K2/8/8 w - - 0 1)

Hume, Arnold A

The Field, 1926

(First published on Thu Mar 25 1926)

1qrrb1Bb/1p1p4/1R5N/4k1Pp/3N4/2Qp1K2/8/8

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sc6#
    • 1...d2
      • 2.Qe3#
    • 1...h4
      • 2.Sg4#
    • 1...d5
      • 2.Re6#
    • 1...d6
      • 2.Sc6#
  • Tries
    • 1.Se6+?
      • 1...Kd5
        • 2.Sf4#
        • 2.Sc7#
      • 1...Rxc3!
    • 1.Bc4?
      • threat
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sb5#
        • 2.Sdf5#
        • 2.Se6#
      • 1...Rc6
        • 2.Sb5#
        • 2.Sdf5#
      • 1...Qd6
        • 2.Sc6#
      • 1...d5
        • 2.Re6#
      • 1...Rxc4!
    • 1.Rb5+?
      • 1...Kd6
        • 2.Sdf5#
        • 2.Shf5#
      • 1...Rc5
        • 2.Sdf5#
      • 1...d5!
    • 1.Qc5+?
      • 1...d5
        • 2.Re6#
      • 1...Rxc5!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Rd5#
      • 1...Kxd6
        • 2.Sdf5#
      • 1...Qxd6
        • 2.Sc6#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Bf7
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(f);SBLOCK::QAB(A)+S(C),DCHECK
    • P(a);OGATE::QAR2(A)
    • P(c);N_GUARD::S(F)
    • P(e);N_GUARD,SBLOCK::R1(E)
    • P(e);SBLOCK::QAB(A)+S(C),DCHECK
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • R(g);XQ(A)
    • Try
      • B(G);
      • Threat
        • DUALS(6)
      • Vars
        • Q(f);SBLOCK::QAB(A)+S(C),DCHECK
        • P(e);N_GUARD::R1(E)
      • Refutation
        • R(g);XB(G)
    • Try
      • R(E);CHECK
      • Vars
        • R(g);P_SPINR(g)::QAB(A)+S(C)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(A);CHECK
      • Vars
        • P(e);P_SPINP(e)::R1(E)
      • Refutation
        • R(g);XQ(A)
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • K(b);S_FLIGHT,XR(E)::S(C)
      • Q(f);SBLOCK,XR(E)::QAB(A)+S(C),DCHECK
      • R(g);N_GUARD::QAR2(A),XR(g)
      • B(i);N_GUARD::S(F),XB(i)
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