MESON Chess Problem Database

Problem Display
PID: 134038 (5RR1/5QB1/4p3/1BK5/2nN3N/8/5b1p/6kn w - - 0 1)

Driver, John Edward

The Field, 1964

(First published on Thu Nov 5 1964)

5RR1/5QB1/4p3/1BK5/2nN3N/8/5b1p/6kn

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Se2#
      • 2.Qf1#
    • 1...Be3
      • 2.Qf1#
    • 1...Bg3
      • 2.Se2#
      • 2.Qf1#
    • 1...Bxd4+
      • 2.Bxd4#
    • 1...Bxh4
      • 2.Qf1#
    • 1...Se3
      • 2.Sdf3#
  • Tries
    • 1.Qg6+?
      • 1...Kf1
        • 2.Qb1#
      • 1...Bg3
        • 2.Se2#
      • 1...Sg3!
    • 1.Qf3?
      • threat
        • 2.Qg2#
      • 1...Bxd4+
        • 2.Bxd4#
      • 1...Kf1
        • 2.Qd1#
        • 2.Qxh1#
      • 1...Bxh4
        • 2.Se2#
        • 2.Qf1#
      • 1...Se3!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qg2#
      • 1...Bxd4+
        • 2.Bxd4#
      • 1...Kf1
        • 2.Qxh1#
      • 1...Bxh4
        • 2.Se2#
      • 1...Se3
        • 2.Sdf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(c);OGATE::QAR1(E)
    • B(c);CHECK,OGATE,XS(A)::R(H)+B(F),DCHECK,XB(c)
    • B(c);N_PINS(A),OGATE,XS(B)::QAR1(E)
    • S(e);N_PINS(A)::S(A)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINB(c),P_SPINS(e)::QAR(E)
        • B(c);N_PINS(A),P_SPINB(c)::S(A)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • B(c);CHECK,OGATE,XS(A)::R(H)+B(F),DCHECK,XB(c)
      • Refutation
        • S(e);N_PINS(A)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • B(c);CHECK,OGATE,XS(A)::R(H)+B(F),DCHECK,XB(c)
      • K(a);P-FLIGHT,P_SPINB(c),P_SPINS(e)::QAR2(E),XS(b)
      • B(c);N_PINS(A),XS(B)::S(A)
      • S(e);N_PINS(A)::S(A)
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