MESON Chess Problem Database

Problem Display
PID: 18213 (4Q1B1/8/pp2K2p/2k5/8/3p1N1r/3B4/8 w - - 0 1)

Mansfield, Comins

1/2 Prize, Express Wieczorny (Meredith Ty.), 1954

4Q1B1/8/pp2K2p/2k5/8/3p1N1r/3B4/8

#2

5 + 6

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1955
3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Kd6#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qd5#
      • 1...Kc4
        • 2.Kd6#
        • 2.Qd5#
      • 1...b5
        • 2.Qc7#
      • 1...Rh5!
    • 1.Qe7+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kc6
        • 2.Sd4#
      • 1...Kb5!
  • Keys
    • 1.Kd7!
      • threat
        • 2.Qe5#
      • 1...Kb5
        • 2.Kd6#
      • 1...Rh5
        • 2.Qxh5#
      • 1...b5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT::B(E)+K(C)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • P(e);SBLOCK::QAR2(D)
      • Refutation
        • R(b);
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(D)
        • K(c);P-FLIGHT::S(B)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • QAR2(D)
    • Vars
      • K(c);P-FLIGHT::QAB(D)+K(C)
      • R(b);N_GUARD::QAR(D),XR(b)
      • P(e);SBLOCK::QAB(D)
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