MESON Chess Problem Database

Problem Display
PID: 132983 (4nB2/QP4p1/3pk1K1/3b4/3Pp3/1N6/8/8 w - - 0 1)

Whitworth, WHA

The Field, 1959

(First published on Thu Oct 8 1959)

4nB2/QP4p1/3pk1K1/3b4/3Pp3/1N6/8/8

#2

6 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.b8Q?
      • threat
        • 2.Qe7#
        • 2.Qf7#
        • 2.Qc8#
        • 2.Qxe8#
      • 1...Bxb3
        • 2.Qf7#
      • 1...Bc4
        • 2.Qf7#
      • 1...Bc6
        • 2.Qf7#
      • 1...Ba8
        • 2.Qf7#
      • 1...Sc7
        • 2.Qc8#
      • 1...Sf6
        • 2.Qxd6#
        • 2.Qe7#
        • 2.Qf7#
      • 1...Bb7!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qc8#
      • 1...Kd7
        • 2.Qc8#
      • 1...Bxb3
        • 2.Qf5#
      • 1...Bxb7
        • 2.Qf5#
      • 1...dxc5
        • 2.Sxc5#
      • 1...Bc4
        • 2.Qf5#
      • 1...Bc6
        • 2.Qf5#
      • 1...Sf6
        • 2.Qxd6#
      • 1...Sc7
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(E);
      • Threat
        • DUALS(4)
      • Vars
        • B(b);XS(A)::QAB1(D)
        • B(b);::QAB1(D)
        • S(f);::QAB(E)
      • Refutation
        • B(b);
  • Actual
    • Q(D);
    • Threat
      • QAB(D)
    • Vars
      • K(d);S_FLIGHT::QAB1(D)
      • B(b);OGATE,XS(A)::QAB1(D)
      • B(b);OGATE,XP(E)::QAB1(D)
      • P(c);XQ(D)::S(A),XP(c)
      • B(b);OGATE::QAB1(D)
      • S(f);N_GUARD::QAR1(D),XP(c)
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