MESON Chess Problem Database

Problem Display
PID: 161416 (4b1r1/b2p3Q/1p1pp1p1/1K1kP3/1pR2R2/5p2/8/1B6 w - - 0 1)

Labai, Zoltan

2nd HM., Mariani-50 JT, 2011

4b1r1/b2p3Q/1p1pp1p1/1K1kP3/1pR2R2/5p2/8/1B6

#2

6 + 11

4901 Best Problems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Qe4#
  • Tries
    • 1.Ba2?
      • threat
        • 2.Rc5#
      • 1...Kxe5
        • 2.Rce4#
      • 1...dxe5
        • 2.Rcd4#
      • 1...b3!
    • 1.Qe7?
      • threat
        • 2.Qxd6#
      • 1...Kxe5
        • 2.Qg5#
      • 1...dxe5
        • 2.Be4#
      • 1...Bb8!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Rfd4#
      • 1...Kxe5
        • 2.Rf5#
      • 1...dxe5
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(g);OGATE::QAB1(F)
  • Tries
    • Try
      • B(A);
      • Threat
        • B(A)+R(B),DCHECK
      • Vars
        • K(c);P-FLIGHT,XP(E)::R1(B)
        • P(e);SBLOCK,XP(E)::B(A)+R(B),DCHECK
      • Refutation
        • P(b);
    • Try
      • Q(F);
      • Threat
        • QAR1(F),XP(e)
      • Vars
        • K(c);OGATEB,P-FLIGHT,P_SPINP(f),XP(E)::QAR2(F)
        • P(e);SBLOCK,XP(E)::B(A)
      • Refutation
        • B(h);
  • Actual
    • Q(F);
    • Threat
      • R1(C)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XP(E)::QAB(F)+R(C),DCHECK
      • P(e);SBLOCK,XP(E)::QAR(F)
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