MESON Chess Problem Database

Problem Display
PID: 18643 (1b6/4r1p1/2Q5/pR1N1P1P/4k3/2K2N2/8/7B w - - 0 1)

Mansfield, Comins

Frederiksborg Amts Avis, 1957

1b6/4r1p1/2Q5/pR1N1P1P/4k3/2K2N2/8/7B

#2

8 + 5

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Qg6#
    • 1...Re5
      • 2.Sd4#
      • 2.Sh4#
    • 1...Be5+
      • 2.Sd4#
  • Tries
    • 1.Rb4+?
      • 1...Kxf5
        • 2.Sxe7#
        • 2.Qg6#
      • 1...axb4+!
    • 1.Qe6+?
      • 1...Be5+
        • 2.Sd4#
        • 2.Sxe5#
      • 1...Rxe6!
    • 1.Qg6?
      • threat
        • 2.f6#
      • 1...Be5+
        • 2.Sd4#
      • 1...Re5
        • 2.Se1#
        • 2.Sg1#
        • 2.Sd2#
        • 2.Sh2#
        • 2.Sd4#
        • 2.Sh4#
        • 2.Sg5#
        • 2.Qg4#
      • 1...Rc7+!
  • Keys
    • 1.Kd2!
      • threat
        • 2.Qc2#
      • 1...Bf4+
        • 2.Se3#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Rc7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(H)
    • B(e);CHECK,SBLOCK::B(A)+S(C)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • P(b);CHECK,XR(D)
    • Try
      • Q(H);CHECK
      • Refutation
        • R(c);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAB(H)+P(F)
      • Vars
        • B(e);CHECK,SBLOCK::B(A)+S(C)
      • Refutation
        • R(c);CHECK
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAB(H)
    • Vars
      • B(e);CHECK,SBLOCK::QAB(H)+S(E)
      • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(H)
      • R(c);N_GUARD,S_CUTB(e)::QAR2(H)
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