MESON Chess Problem Database

Problem Display
PID: 54666 (7N/8/3PR3/3bPk2/4R2P/Q1P3PP/B4K2/8 w - - 0 1)

Mansfield, Comins

Comm., Schach-Echo, 1971/II

7N/8/3PR3/3bPk2/4R2P/Q1P3PP/B4K2/8

#2

12 + 2

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Bb1#
    • 1...Bc6
      • 2.Rf4#
    • 1...Bb7
      • 2.Rf4#
    • 1...Ba8
      • 2.Rf4#
  • Tries
    • 1.Ke3?
      • threat
        • 2.Rf6#
      • 1...Bxe4
        • 2.g4#
      • 1...Bxe6
        • 2.g4#
      • 1...Kxe6!
  • Keys
    • 1.Qa8!
      • 1...Kxe4
        • 2.Bb1#
      • 1...Kxe6
        • 2.Qc8#
      • 1...Bxa2
        • 2.Rf6#
      • 1...Bxe4
        • 2.Qf8#
      • 1...Bxe6
        • 2.g4#
      • 1...Bxa8
        • 2.Rf4#
      • 1...Bb3
        • 2.Rf6#
      • 1...Bc4
        • 2.Rf6#
      • 1...Bc6
        • 2.Rf4#
      • 1...Bb7
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XR(G)::B(A)
    • B(a);::R1(G)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • R1(K)
      • Vars
        • B(a);XR(G)::P(E)
        • B(a);XR(K)::P(E)
      • Refutation
        • K(b);P_SPINB(a),S_FLIGHT,XR(K)
  • Actual
    • Q(C);
    • Vars
      • K(b);OGATEB,P_SPINB(a),S_FLIGHT,XR(G)::B(A)
      • K(b);OGATEB,P_SPINB(a),S_FLIGHT,XR(K)::QAB(C)
      • B(a);XB(A)::R1(K)
      • B(a);SBLOCK,XR(G)::QAR(C)
      • B(a);XR(K)::P(E)
      • B(a);XQ(C)::R1(G)
      • B(a);::R1(K)
      • B(a);::R1(G)
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