MESON Chess Problem Database

Problem Display
PID: 85788 (4n1k1/6Bp/4P2Q/4K3/8/8/8/8 w - - 0 1)

Russ, Colin Albert Harry

Speckmann, Werner

Deutsche Schachzeitung, 1987

4n1k1/6Bp/4P2Q/4K3/8/8/8/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bf6?
      • 1...Sg7
        • 2.Qxg7#
      • 1...Sd6
        • 2.Qg7#
      • 1...Sc7
        • 2.Qg7#
      • 1...Sxf6!
    • 1.Bf8?
      • 1...Sg7
        • 2.Qxg7#
      • 1...Sd6
        • 2.Qg7#
      • 1...Sf6
        • 2.Qg7#
      • 1...Sc7
        • 2.Qg7#
      • 1...Kh8!
  • Keys
    • 1.Bh8!
      • 1...Kxh8
        • 2.Qf8#
      • 1...Sg7
        • 2.Qxg7#
      • 1...Sd6
        • 2.Qg7#
      • 1...Sf6
        • 2.Qg7#
      • 1...Sc7
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • S(b);XB(D)
    • Try
      • B(D);
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(a)
  • Actual
    • B(D);
    • Vars
      • K(c);P-FLIGHT,P_SPINP(a),XB(D)::QAR2(C)
      • S(b);N_GUARD::QAR1(C),XS(b)
      • S(b);N_GUARD::QAR1(C)
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