MESON Chess Problem Database

Problem Display
PID: 272253 (1n6/7Q/5Bn1/R2P1kP1/K3b2p/3NPP2/8/3B1R2 w - - 0 1)

Simoni, Francesco

L'Italia Scacchistica, 1986

1n6/7Q/5Bn1/R2P1kP1/K3b2p/3NPP2/8/3B1R2

#2

11 + 5

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Qd7#
    • 1...Sc6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
    • 1...h3
      • 2.Qxh3#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qxg6#
      • 1...Bc2+
        • 2.Bxc2#
      • 1...Bxf3!
    • 1.Se5?
      • threat
        • 2.Qxg6#
      • 1...Bc2+
        • 2.Bxc2#
      • 1...Bxd5!
  • Keys
    • 1.Bc2!
      • 1...Bxd3
        • 2.Bxd3#
      • 1...Bxf3
        • 2.Se5#
      • 1...Bxd5
        • 2.Sf4#
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...h3
        • 2.Qxh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::QAB(K)
    • S(e);N_GUARD::QAB(K),XS(e)
    • P(b);OGATE::QAB(K),XP(b)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(K),XS(d)
      • Vars
        • B(a);CHECK,OGATEB::B(A),XB(a)
      • Refutation
        • B(a);XP(E)
    • Try
      • S(C);
      • Threat
        • QAB1(K),XS(d)
      • Vars
        • B(a);CHECK,OGATEB::B(A),XB(a)
      • Refutation
        • B(a);XP(H)
  • Actual
    • B(A);
    • Vars
      • B(a);OGATE,P_SPINB(a),XS(C)::B(A),XB(a)
      • B(a);P_SPINB(a),XP(E)::B(A)+S(C)
      • B(a);P_SPINB(a),XP(H)::B(A)+S(C)
      • S(e);N_GUARD::QAB(K)
      • S(e);N_GUARD::QAB(K),XS(e)
      • P(b);OGATE::QAB(K),XP(b)
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