MESON Chess Problem Database

Problem Display
PID: 134008 (K3bN2/8/2p1p2q/P1k5/P2R2Q1/1nn2r2/B4N2/8 w - - 0 1)

Beal, Edward W

The Field, 1964

(First published on Thu Jan 30 1964)

K3bN2/8/2p1p2q/P1k5/P2R2Q1/1nn2r2/B4N2/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sxe6#
    • 1...Qd2
      • 2.Sxe6#
    • 1...Qf4
      • 2.Sxe6#
    • 1...Qg5
      • 2.Sxe6#
    • 1...Qg7
      • 2.Sxe6#
    • 1...Qh1
      • 2.Sxe6#
    • 1...Qh2
      • 2.Sxe6#
    • 1...Qh3
      • 2.Sxe6#
    • 1...Qh4
      • 2.Sxe6#
    • 1...Qh5
      • 2.Sxe6#
    • 1...Qh7
      • 2.Sxe6#
    • 1...Qh8
      • 2.Sxe6#
    • 1...Rd3
      • 2.Sxd3#
    • 1...Rf5
      • 2.Sd3#
    • 1...Rf6
      • 2.Sd3#
    • 1...Rf7
      • 2.Sd3#
    • 1...Rxf8
      • 2.Sd3#
    • 1...Bh5
      • 2.Sd7#
    • 1...Bg6
      • 2.Sxe6#
      • 2.Sd7#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Bf7
      • 2.Sd7#
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qa7#
      • 1...Qxg7
        • 2.Sxe6#
      • 1...Sxd4
        • 2.Qe7#
      • 1...Sxa4
        • 2.Qe5#
      • 1...Sd5
        • 2.Se4#
      • 1...Qh7
        • 2.Sxe6#
      • 1...Rf7
        • 2.Sd3#
      • 1...Bd7
        • 2.Sxd7#
      • 1...Bf7
        • 2.Sd7#
      • 1...Sb5
        • 2.Se4#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 15
  • Sets
    • Q(g);N_GUARD::S(H),XP(f)
    • R(c);N_GUARD::S(B),XR(c)
    • R(c);N_GUARD::S(B)
    • R(c);N_GUARD,XS(H)::S(B)
    • B(h);N_GUARD::S(H)
    • B(h);N_GUARD::S(H),XB(h)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • Q(g);N_GUARD,XQ(E)::S(H),XP(f)
      • S(a);SBLOCK,XR(D)::QAB(E)
      • S(b);N_GUARD,XP(C)::QAR2(E)
      • S(b);N_GUARD::S(B)
      • Q(g);N_GUARD::S(H),XP(f)
      • R(c);N_GUARD::S(B)
      • B(h);N_GUARD::S(H),XB(h)
      • B(h);N_GUARD::S(H)
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