MESON Chess Problem Database

Problem Display
PID: 61910 (Bb6/1N1p4/3pP3/1P1kNp1Q/2p5/K1B1p3/7p/8 w - - 0 1)

Hirschenson, Aaron

Comm., Eretria 5 Days Ty., 2005

Bb6/1N1p4/3pP3/1P1kNp1Q/2p5/K1B1p3/7p/8

#2

8 + 8

5673 Eretria Bulletin 2005
721 Variantim 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qf3#
    • 1...Kxe6
      • 2.Qf7#
    • 1...dxe6
      • 2.Qf3#
  • Tries
    • 1.Kb4?
      • threat
        • 2.Sc5#
        • 2.Sd8#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kxe6
        • 2.Qf7#
      • 1...dxe5!
    • 1.Sa5+?
      • 1...Kxe6
        • 2.Qf7#
      • 1...Kc5!
    • 1.Qd1+?
      • 1...Ke4
        • 2.Qf3#
        • 2.Qd4#
      • 1...Kxe6!
    • 1.Qxf5?
      • threat
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sg4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sxd7#
        • 2.Sf7#
      • 1...dxe6
        • 2.Qf3#
      • 1...dxe5!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Qxf5#
      • 1...Ke4
        • 2.Sc5#
      • 1...Kxe6
        • 2.Sd8#
      • 1...dxe6
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::QAB1(E)
    • K(d);OGATEB,S_FLIGHT,XP(F)::QAB1(E)
    • P(g);SBLOCK,XP(F)::QAB(E)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT::QAB1(E)
        • K(d);OGATEB,S_FLIGHT,XP(F)::QAB1(E)
      • Refutation
        • P(f);XS(D)
    • Try
      • S(G);CHECK
      • Vars
        • K(d);S_FLIGHT,XP(F)::QAB1(E)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(d);S_FLIGHT,XP(F)
    • Try
      • Q(E);XP(e)
      • Threat
        • DUALS(7)
      • Vars
        • P(g);SBLOCK,XP(F)::QAB(E)
      • Refutation
        • P(f);P_SPINP(f),XS(D)
  • Actual
    • S(D);P_PINP(e)
    • Threat
      • QAR2(E),XP(e)
    • Vars
      • K(d);N_SPINP(e),S_FLIGHT::B(H)+S(G),DCHECK
      • K(d);N_SPINP(e),S_FLIGHT,XP(F)::S(G)
      • P(g);SBLOCK,XP(F)::QAB(E)
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