MESON Chess Problem Database

Problem Display
PID: 70576 (b5nK/2Q3B1/B4p2/3p1PP1/N2R1Rp1/1p2k3/1q4PP/6r1 w - - 0 1)

Neukomm, Gyula (Julius) R

Chess, 1951

b5nK/2Q3B1/B4p2/3p1PP1/N2R1Rp1/1p2k3/1q4PP/6r1

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Qc3#
    • 1...Qc3
      • 2.Qxc3#
    • 1...Qa2
      • 2.Qc3#
    • 1...Qf2
      • 2.Qc3#
    • 1...Qxg2
      • 2.Qc3#
    • 1...Sh6
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
    • 1...fxg5
      • 2.Qe5#
  • Tries
    • 1.Sxb2?
      • threat
        • 2.Qc3#
      • 1...Rc1
        • 2.Qxc1#
      • 1...Rd1
        • 2.Sxd1#
      • 1...Bc6!
    • 1.Rf3+?
      • 1...Kxd4
        • 2.Qf4#
      • 1...gxf3!
    • 1.Rfe4+?
      • 1...Kf2
        • 2.Qg3#
      • 1...dxe4!
  • Keys
    • 1.Rf2!
      • threat
        • 2.Qf4#
      • 1...Kxf2
        • 2.Qg3#
      • 1...Kxd4
        • 2.Qf4#
      • 1...Qxd4
        • 2.Re2#
      • 1...Qxf2
        • 2.Qc3#
      • 1...fxg5
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::QAR2(I)
    • Q(b);N_GUARD::QAR2(I),XQ(b)
    • Q(b);N_GUARD,XP(A)::QAR2(I)
    • S(i);N_GUARD::QAR(I)
    • S(i);N_GUARD::QAR(I),XS(i)
    • P(g);N_GUARD,XP(G)::QAR2(I)
  • Tries
    • Try
      • S(C);XQ(b)
      • Threat
        • QAR2(I)
      • Vars
        • R(a);N_GUARD::QAB(I),XR(a)
        • R(a);N_GUARD::S(C),XR(a)
      • Refutation
        • B(h);
    • Try
      • R(E);CHECK
      • Vars
        • K(d);P_SPINP(g),S_FLIGHT,XR(D)::QAR2(I)
      • Refutation
        • P(e);XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(I)
      • Refutation
        • P(f);XR(E)
  • Actual
    • R(E);
    • Threat
      • QAB1(I)
    • Vars
      • K(d);S_FLIGHT,XR(E)::QAB1(I)
      • K(d);P_SPINP(g),S_FLIGHT,XR(D)::QAR2(I)
      • Q(b);N_GUARD,SBLOCK,XR(D)::R1(E)
      • Q(b);N_GUARD,SBLOCK,XR(E)::QAR2(I)
      • P(g);XP(G)::QAR2(I)
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