MESON Chess Problem Database

Problem Display
PID: 56041 (4Qbn1/R1P2p2/3k1r2/3p1p2/6p1/6R1/4NK1B/7B w - - 0 1)

Mansfield, Comins

4th HM., Arbeiter Zeitung, 1979-1980

4Qbn1/R1P2p2/3k1r2/3p1p2/6p1/6R1/4NK1B/7B

#2

8 + 8

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Tries
    • 1.Rc3+?
      • 1...f4
        • 2.Rc6#
        • 2.Ra6#
        • 2.c8S#
      • 1...g3+!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Re3#
        • 2.Qxd5#
      • 1...Ke7
        • 2.c8Q#
        • 2.c8R#
      • 1...Kxc6!
  • Keys
    • 1.Qb8!
      • threat
        • 2.c8Q#
      • 1...Kc5
        • 2.Rc3#
      • 1...Ke5
        • 2.Re3#
      • 1...Kc6
        • 2.c8Q#
        • 2.c8R#
      • 1...Ke6
        • 2.c8Q#
        • 2.c8B#
      • 1...Kd7
        • 2.c8Q#
      • 1...Ke7
        • 2.c8Q#
      • 1...Re6
        • 2.c8Q#
        • 2.c8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • P(a);CHECK,P_SPINP(a)
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);S_FLIGHT::P=Q
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(b),XQ(H)
  • Actual
    • Q(H);
    • Threat
      • P=Q
    • Vars
      • K(d);S_FLIGHT::R(E)
      • K(d);S_FLIGHT::B(D)+R(E),DCHECK
      • K(d);P-FLIGHT,P_SPINP(b)::P=Q
      • K(d);P-FLIGHT::P=Q
      • K(d);S_FLIGHT::P=Q
      • R(e);::P=Q
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