MESON Chess Problem Database

Problem Display
PID: 101335 (3Q2n1/2p5/4K3/2pN2P1/Rnqk4/5P2/3P4/4N3 w - - 0 1)

Madsen, Arthur Valdemar

Good Companions, 1921

3Q2n1/2p5/4K3/2pN2P1/Rnqk4/5P2/3P4/4N3

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Se3#
      • 2.Sb6#
    • 1...Qe2+
      • 2.Se3#
    • 1...Qd3
      • 2.Se3#
      • 2.Sb6#
    • 1...Qxd5+
      • 2.Qxd5#
    • 1...Qa6+
      • 2.Sb6#
    • 1...Qc1
      • 2.Se3#
      • 2.Sb6#
    • 1...Qc2
      • 2.Se3#
      • 2.Sb6#
    • 1...Qc3
      • 2.Se3#
      • 2.Sb6#
    • 1...Sd3
      • 2.Sc2#
    • 1...Sxd5
      • 2.Qxd5#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sh6
      • 2.Qf6#
      • 2.Qh8#
    • 1...Se7
      • 2.Qh8#
  • Keys
    • 1.g6!
      • threat
        • 2.Qh4#
      • 1...Qe2+
        • 2.Se3#
      • 1...Qxd5+
        • 2.Qxd5#
      • 1...Qa6+
        • 2.Sb6#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Qd3
        • 2.Se3#
        • 2.Sb6#
      • 1...Qc2
        • 2.Se3#
        • 2.Sb6#
      • 1...Sd3
        • 2.Sc2#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sh6
        • 2.Qf6#
        • 2.Qh8#
      • 1...Se7
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,N_PINS(E),P_SPINS(a)::QAR(H)+S(E)
    • Q(b);CHECK,OGATE,P_SPINQ(b),P_SPINS(a),XS(E)::QAR1(H),XQ(b)
    • S(a);N_GUARD,P_SPINQ(b),SBLOCK::S(A)
    • S(a);OGATE,P_SPINQ(b),P_SPINS(a),XS(E)::QAR1(H),XS(a)
    • S(f);N_GUARD::QAB(H),XS(f)
    • S(f);OGATE::QAB(H)
  • Actual
    • P(F);
    • Threat
      • QAR(H)
    • Vars
      • Q(b);CHECK,N_PINS(E),P_SPINS(a)::QAR(H)+S(E)
      • Q(b);CHECK,OGATE,P_SPINQ(b),P_SPINS(a),XS(E)::QAR1(H),XQ(b)
      • S(a);OGATE,P_SPINQ(b),P_SPINS(a),XS(E)::QAR1(H),XS(a)
      • S(a);N_GUARD,P_SPINQ(b),SBLOCK::S(A)
      • S(f);N_GUARD::QAB(H),XS(f)
      • S(f);OGATE::QAB(H)
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Developed and maintained by Brian Stephenson.
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