MESON Chess Problem Database

Problem Display
PID: 51958 (4B2n/2Np1b2/R1q2P2/2RP1k2/3P3P/8/4N1QP/7K w - - 0 1)

Zilahi, Zoltan

1st Prize, Die Schwalbe, 1934

4B2n/2Np1b2/R1q2P2/2RP1k2/3P3P/8/4N1QP/7K

#2

12 + 5

23 Die Schwalbe 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Qg5#
    • 1...Bxd5
      • 2.Qf3#
    • 1...Be6
      • 2.Qf3#
    • 1...Bg6
      • 2.Qf3#
    • 1...Bg8
      • 2.Qf3#
  • Tries
    • 1.Qg4+?
      • 1...Kxf6
        • 2.Qg5#
      • 1...Kxg4!
    • 1.dxc6+?
      • 1...Kxf6
        • 2.Qg5#
      • 1...Bd5
        • 2.Qf3#
      • 1...d5!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qg5#
      • 1...Kf4
        • 2.Qe4#
      • 1...Kxf6
        • 2.Qg5#
      • 1...Qxd5
        • 2.Qe4#
      • 1...Qxf6
        • 2.Qe4#
      • 1...Bxd5
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(a);P-FLIGHT,P_SPINQ(b),XP(J)::QAB1(C)
    • B(d);P_PINQ(C),P_SPINB(d),XP(H)::QAR2(C)
    • B(d);::QAR2(C)
  • Tries
    • Try
      • Q(C);CHECK,P_SPINP(H)
      • Vars
        • K(a);P-FLIGHT,P_SPINQ(b),XP(J)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • P(H);CHECK,XQ(b)
      • Vars
        • K(a);P-FLIGHT,XP(J)::QAB1(C)
        • B(d);P_PINQ(C),P_SPINB(d)::QAR2(C)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • S(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);P-FLIGHT,P_SPINQ(b),XP(J)::QAB1(C)
      • Q(b);P_PINQ(C),P_SPINQ(b),XP(H)::QAB1(C)
      • Q(b);XP(J)::QAB1(C)
      • B(d);P_PINQ(C),P_SPINB(d),XP(H)::QAR2(C)
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