MESON Chess Problem Database

Problem Display
PID: 152499 (2QK4/2NN1p1p/5B1r/4Pk2/6Rp/6PB/3q4/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Chess, 1957

2QK4/2NN1p1p/5B1r/4Pk2/6Rp/6PB/3q4/8

#2

9 + 6

56 The Problemist 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qe1
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qc3
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qe3
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qb4
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qf4
      • 2.Sc5#
    • 1...Qa5
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qg5
      • 2.Sf8#
    • 1...Qb2
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qc2
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qe2
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qf2
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qg2
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qh2
      • 2.Sc5#
      • 2.Sb6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Qxd7+
      • 2.Qxd7#
    • 1...Rg6
      • 2.Rf4#
  • Keys
    • 1.Se8!
      • threat
        • 2.Sg7#
      • 1...Qa5+
        • 2.Sb6#
      • 1...Qxd7+
        • 2.Qxd7#
      • 1...Ke6
        • 2.Rd4#
      • 1...Qf4
        • 2.Sc5#
      • 1...Qg5
        • 2.Sf8#
      • 1...Rg6
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_PINS(G)::QAB(H)+S(G)
    • Q(a);N_PINS(G),P_PINB(E)::QAB(H)+S(G)
    • Q(a);CHECK,OGATE,P_SPINQ(a),XS(G)::QAB(H),XQ(a)
    • R(d);SBLOCK::B(B)+R(C),DCHECK
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • Q(a);CHECK,N_PINS(G)::QAB(H)+S(G)
      • Q(a);CHECK,OGATE,P_SPINQ(a),XS(G)::QAB(H),XQ(a)
      • K(c);S_FLIGHT::B(B)+R(C)
      • Q(a);N_PINS(G)::QAB(H)+S(G)
      • Q(a);N_PINS(G),P_PINB(E)::QAB(H)+S(G)
      • R(d);SBLOCK::B(B)+R(C),DCHECK
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