MESON Chess Problem Database

Problem Display
PID: 55323 (8/4B3/3p2Bp/4k1nK/2Q5/4p3/8/8 w - - 0 1)

Mansfield, Comins

Comm., Hlas l'udu, 1973

8/4B3/3p2Bp/4k1nK/2Q5/4p3/8/8

#2

4 + 5

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Qe4#
    • 1...Sh3
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Se6
      • 2.Qe4#
    • 1...Sf7
      • 2.Qe4#
    • 1...Sh7
      • 2.Qe4#
  • Tries
    • 1.Qd5+?
      • 1...Kf4
        • 2.Bxd6#
      • 1...Kxd5!
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qxd6#
      • 1...Kxd4!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxd6#
      • 1...Kd4
        • 2.Bf6#
      • 1...Kf4
        • 2.Bxd6#
      • 1...Ke6
        • 2.Qxd6#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sf7
        • 2.Qe4#
      • 1...d5
        • 2.Qf6#

FEATURES

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