MESON Chess Problem Database

Problem Display
PID: 66616 (1rBr4/q2n1pN1/Np6/1P1kn3/p5P1/Q2P1b2/K1P1R2b/B7 w - - 0 1)

Neumann, Itzhak

The Chess Review, 1937

1rBr4/q2n1pN1/Np6/1P1kn3/p5P1/Q2P1b2/K1P1R2b/B7

#2

11 + 11

5828 My Selected Chess Problems (Neumann) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Qc7
      • 2.Sxc7#
    • 1...Qa8
      • 2.Sc7#
    • 1...Sxd3
      • 2.Qxd3#
    • 1...Sxg4
      • 2.c4#
    • 1...Sc6
      • 2.c4#
    • 1...Sg6
      • 2.c4#
  • Tries
    • 1.Rxe5+?
      • 1...Bxe5
        • 2.c4#
      • 1...Sxe5!
    • 1.Qb4?
      • threat
        • 2.Qd4#
      • 1...Sc4
        • 2.dxc4#
      • 1...Sc6
        • 2.c4#
      • 1...Bg1!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Sxg4
        • 2.Se7#
        • 2.c4#
      • 1...Qc7
        • 2.Sxc7#
      • 1...Sc4
        • 2.Se7#
      • 1...Sc6
        • 2.c4#
      • 1...Sg6
        • 2.c4#
      • 1...Sc5
        • 2.Sb4#
      • 1...Sf6
        • 2.Se3#
      • 1...Sf8
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(g);N_GUARD::S(I),XQ(g)
    • Q(g);N_GUARD::S(I)
    • S(e);OGATE,XP(F)::QAR2(E),XS(e)
    • S(e);N_GUARD,XP(G)::P(C)
    • S(e);N_GUARD::P(C)
  • Tries
    • Try
      • R(D);CHECK,XS(e)
      • Vars
        • B(a);XR(D)::P(C)
      • Refutation
        • S(h);XR(D)
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • S(e);OGATE::P(F),XS(e)
        • S(e);N_GUARD::P(C)
      • Refutation
        • B(a);
  • Actual
    • S(J);
    • Threat
      • QAR1(E)
    • Vars
      • K(d);P_SPINS(e),S_FLIGHT::QAR1(E)
      • S(e);OGATE,XP(F)::QAR2(E),XS(e)
      • Q(g);N_GUARD::S(I),XQ(g)
      • S(e);::S(J)
      • S(e);N_GUARD::P(C)
      • S(h);SBLOCK::S(I)
      • S(h);::S(J)
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