MESON Chess Problem Database

Problem Display
PID: 10385 (1qn5/3N1p1K/5N2/3P1k1p/r4P2/3R4/2R5/1Bb2Q2 w - - 0 1)

Mansfield, Comins

Courrier Mercantile, 1964

1qn5/3N1p1K/5N2/3P1k1p/r4P2/3R4/2R5/1Bb2Q2

#2

9 + 7

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Tries
    • 1.Rg2?
      • threat
        • 2.Rg5#
      • 1...Qxf4
        • 2.Rd4#
      • 1...Rxf4
        • 2.Rb3#
      • 1...Bxf4!
  • Keys
    • 1.Rg3!
      • threat
        • 2.Rg5#
      • 1...Qxf4
        • 2.Rc4#
      • 1...Rxf4
        • 2.Rb2#
      • 1...Bxf4
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • Q(f);N_GUARD,P_SPINQ(f),XP(E)::B(A)+R(D)
        • R(b);N_GUARD,P_SPINR(b),XP(E)::B(A)+R(D)
      • Refutation
        • B(a);P_SPINB(a),XP(E)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • Q(f);N_GUARD,P_SPINQ(f),XP(E)::B(A)+R(C)
      • R(b);N_GUARD,P_SPINR(b),XP(E)::B(A)+R(C)
      • B(a);P_SPINB(a),SBLOCK,XP(E)::QAB(B)
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