MESON Chess Problem Database

Problem Display
PID: 55721 (q7/3P3R/2B1P1p1/1p1N4/3pKP2/8/4P1kb/4Q3 w - - 0 1)

Mansfield, Comins

4th HM., British Chess Magazine, 1977

q7/3P3R/2B1P1p1/1p1N4/3pKP2/8/4P1kb/4Q3

#2

9 + 6

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf4
      • 2.Sxf4#
    • 1...d3
      • 2.Se3#
  • Tries
    • 1.Kd3?
      • threat
        • 2.Se3#
      • 1...Qa3+
        • 2.Sc3#
      • 1...Qxc6!
    • 1.Ke5?
      • threat
        • 2.Se3#
      • 1...Qb8+
        • 2.Sc7#
      • 1...Qh8+
        • 2.Sf6#
      • 1...Bxf4+
        • 2.Sxf4#
      • 1...Qxc6!
    • 1.Qf2+?
      • 1...Kh1
        • 2.Rxh2#
        • 2.Qf1#
        • 2.Qxh2#
      • 1...Kxf2!
    • 1.Qf1+?
      • 1...Kg3
        • 2.Qf3#
      • 1...Kxf1!
  • Keys
    • 1.Kxd4!
      • threat
        • 2.Se3#
      • 1...Qa1+
        • 2.Sc3#
      • 1...Qa4+
        • 2.Sb4#
      • 1...Qa7+
        • 2.Sb6#
      • 1...Qh8+
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(b);XP(D)::S(E),XB(b)
    • P(c);N_GUARD::S(E)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • B(F)+S(E),DCHECK
      • Vars
        • Q(f);CHECK,N_GUARD::B(F)+S(E)
      • Refutation
        • Q(f);XB(F)
    • Try
      • K(C);P-FLIGHT,P_SPINP(D)
      • Threat
        • B(F)+S(E),DCHECK
      • Vars
        • Q(f);CHECK,N_GUARD::B(F)+S(E)
        • B(b);CHECK,XP(D)::B(F)+S(E),DCHECK,XB(b)
      • Refutation
        • Q(f);XB(F)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • K(C);P-FLIGHT,XP(c)
    • Threat
      • B(F)+S(E),DCHECK
    • Vars
      • Q(f);CHECK,N_GUARD::B(F)+S(E)
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