MESON Chess Problem Database

Problem Display
PID: 44886 (1Q1K1bnq/4p2r/5k1p/6pP/2pR2P1/2B5/8/8 w - - 0 1)

Mansfield, Comins

Probleemblad, 1971

1Q1K1bnq/4p2r/5k1p/6pP/2pR2P1/2B5/8/8

#2

6 + 9

4054 Complete Mansfield/III 1999
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Rd6#
    • 1...e6
      • 2.Rf4#
  • Tries
    • 1.Qd6+?
      • 1...Kf7
        • 2.Qg6#
      • 1...Kg7
        • 2.Qg6#
      • 1...e6
        • 2.Rf4#
      • 1...exd6!
    • 1.Qb6+?
      • 1...Kf7
        • 2.Qg6#
      • 1...Kg7
        • 2.Qg6#
      • 1...e6
        • 2.Rf4#
        • 2.Rd7#
      • 1...Ke5!
  • Keys
    • 1.Qb1!
      • 1...Ke5
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kf7
        • 2.Qg6#
      • 1...Kg7
        • 2.Qg6#
      • 1...Qg7
        • 2.Qf5#
      • 1...Rf7
        • 2.Rd6#
      • 1...Rg7
        • 2.Qf5#
      • 1...Bg7
        • 2.Qf5#
      • 1...e5
        • 2.Qg6#
      • 1...e6
        • 2.Rf4#

Anticipated by 149798(0000)

This is a version

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK::B(A)+R(B),DCHECK
    • P(e);SBLOCK::B(A)+R(B),DCHECK
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAB1(E)
        • K(c);OGATE,S_FLIGHT::QAR1(E)
        • P(e);P_SPINP(e)::B(A)+R(B),DCHECK
      • Refutation
        • P(e);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAB1(E)
        • K(c);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(c);S_FLIGHT::QAR1(E)
      • K(c);P-FLIGHT::QAB1(E)
      • Q(i);SBLOCK::QAR1(E)
      • R(f);SBLOCK::B(A)+R(B),DCHECK
      • R(f);SBLOCK::QAR1(E)
      • B(g);SBLOCK::QAR1(E)
      • P(e);SBLOCK::QAR1(E)
      • P(e);SBLOCK::B(A)+R(B),DCHECK
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Developed and maintained by Brian Stephenson.
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