MESON Chess Problem Database

Problem Display
PID: 62085 (2N4b/2p2B2/4r3/Qp2Pk1N/1P4R1/4p2K/4P3/8 w - - 0 1)

Forster, Klaus

Schach-Echo, 1984

2N4b/2p2B2/4r3/Qp2Pk1N/1P4R1/4p2K/4P3/8

#2

9 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Qxc7?
      • threat
        • 2.Sg3#
      • 1...Rxe5
        • 2.Sd6#
      • 1...Bxe5
        • 2.Qc2#
      • 1...Rh6
        • 2.Se7#
      • 1...Rd6!
    • 1.Qxb5?
      • threat
        • 2.Sg3#
      • 1...Rxe5
        • 2.Se7#
      • 1...Bxe5
        • 2.Qd3#
      • 1...Rh6
        • 2.Se7#
      • 1...c5!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Sg3#
      • 1...Rxe5
        • 2.Qf1#
      • 1...Bxe5
        • 2.Qb1#
      • 1...Rh6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);XP(e)
      • Threat
        • S(G)
      • Vars
        • R(d);N_GUARD,SBLOCK,XP(F)::S(I)
        • B(f);SBLOCK,XP(F)::QAB(E)
        • R(d);N_GUARD,P_PINS(G)::S(I)
      • Refutation
        • R(d);
    • Try
      • Q(E);XP(b)
      • Threat
        • S(G)
      • Vars
        • R(d);N_GUARD,P_SPINR(d),XP(F)::S(I)
        • B(f);P_SPINB(f),SBLOCK,XP(F)::QAB(E)
        • R(d);N_GUARD,P_PINS(G)::S(I)
      • Refutation
        • P(e);
  • Actual
    • Q(E);
    • Threat
      • S(G)
    • Vars
      • R(d);SBLOCK,XP(F)::QAR(E)
      • B(f);SBLOCK,XP(F)::QAB(E)
      • R(d);N_GUARD,P_PINS(G)::S(I)
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