MESON Chess Problem Database

Problem Display
PID: 174425 (3R2N1/b1B3p1/4p1P1/R2nN1p1/4k1p1/2pp2Q1/3p4/K2B4 w - - 0 1)

Avner, Uri

Variantim, 1992

3R2N1/b1B3p1/4p1P1/R2nN1p1/4k1p1/2pp2Q1/3p4/K2B4

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxd3#
    • 1...Kf5
      • 2.Qxg4#
  • Tries
    • 1.Sxg4?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qxd3#
      • 1...Bd4
        • 2.Qf3#
      • 1...Sf4
        • 2.Bf3#
        • 2.Re5#
        • 2.Qf3#
      • 1...e5
        • 2.Qxe5#
      • 1...Kd4!
    • 1.Sc6?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qxd3#
      • 1...Sf4
        • 2.Re5#
      • 1...e5
        • 2.Qxe5#
      • 1...Bd4!
    • 1.Sf7?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qxd3#
      • 1...Bd4
        • 2.Sd6#
      • 1...Sf4
        • 2.Sxg5#
        • 2.Re5#
      • 1...e5
        • 2.Qxe5#
      • 1...Kd4!
    • 1.Qf3+?
      • 1...Kd4
        • 2.Qxd3#
      • 1...gxf3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Qxg4#
      • 1...Kf5
        • 2.Qxd3#
      • 1...Bd4
        • 2.Sd6#
      • 1...Sf4
        • 2.Re5#
      • 1...e5
        • 2.Qxe5#

This is a version of 174426

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT,P_SPINS(f)::QAR1(C),XP(c)
    • K(d);S_FLIGHT::QAB1(C),XP(e)
  • Tries
    • Try
      • S(E);XP(e)
      • Threat
        • QAR1(C)
      • Vars
        • K(d);P_SPINS(f),S_FLIGHT::QAB(C),XP(c)
        • B(i);SBLOCK::QAB1(C)
        • P(h);::QAR1(C),XP(h)
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(f)
    • Try
      • S(E);
      • Threat
        • QAR1(C)
      • Vars
        • K(d);P_SPINS(f),S_FLIGHT::QAB(C),XP(c)
        • S(f);OGATE::R1(D)
        • P(h);::QAR1(C),XP(h)
      • Refutation
        • B(i);
    • Try
      • S(E);
      • Threat
        • QAR1(C)
      • Vars
        • K(d);P_SPINS(f),S_FLIGHT::QAB(C),XP(c)
        • B(i);SBLOCK::S(E)
        • P(h);::QAR1(C),XP(h)
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(f)
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINS(f)::QAR1(C),XP(c)
      • Refutation
        • P(e);XQ(C)
  • Actual
    • S(E);
    • Threat
      • QAR1(C)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(f)::QAR(C),XP(e)
      • K(d);P_SPINS(f),S_FLIGHT::QAB(C),XP(c)
      • B(i);SBLOCK::S(E)
      • S(f);OGATE::R1(D)
      • P(h);::QAR1(C),XP(h)
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