MESON Chess Problem Database

Problem Display
PID: 69345 (4Nb2/2B5/6r1/2p3r1/2K1k1P1/2Q1p3/4P3/4n3 w - - 0 1)

Riczu, Lajos

Chess Life, 1968

4Nb2/2B5/6r1/2p3r1/2K1k1P1/2Q1p3/4P3/4n3

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg4
      • 2.Qe5#
    • 1...Re5
      • 2.Qxe5#
    • 1...Rf6
      • 2.Sxf6#
    • 1...Rg7
      • 2.Sf6#
    • 1...Rg8
      • 2.Sf6#
    • 1...Sc2
      • 2.Qxc2#
      • 2.Qd3#
    • 1...Sg2
      • 2.Qc2#
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sf3
      • 2.Qc2#
      • 2.Qd3#
  • Tries
    • 1.Qc2+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sxc2!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qf4#
      • 1...Rxg4
        • 2.Qe5#
      • 1...Rxf6
        • 2.Sxf6#
      • 1...Re5
        • 2.Qxe5#
      • 1...Rf5
        • 2.Qxf5#
      • 1...Bd6
        • 2.Sxd6#
      • 1...Sg2
        • 2.Qf3#
      • 1...Sd3
        • 2.Qf3#
        • 2.exd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(e);N_GUARD,XP(D)::QAR1(B)
    • R(e);N_GUARD::QAR1(B),XR(e)
    • R(f);N_GUARD::S(F),XR(f)
    • R(f);N_GUARD::S(F)
    • S(a);N_GUARD::QAB1(B),XS(a)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • R(e);N_GUARD,XP(D)::QAR1(B)
      • R(f);XQ(B)::S(F),XR(f)
      • R(e);N_GUARD::QAR1(B),XR(e)
      • R(e);N_GUARD::QAB1(B),XR(e)
      • B(g);N_GUARD::S(F),XB(g)
      • S(a);N_GUARD::QAB1(B)
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Developed and maintained by Brian Stephenson.
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