MESON Chess Problem Database

Problem Display
PID: 79457 (2Q5/3pR3/BN1nbrp1/3p4/2N1kpRP/2P4K/2p2P2/2B5 w - - 0 1)

Mehner, Heinrich

stern, 1974

2Q5/3pR3/BN1nbrp1/3p4/2N1kpRP/2P4K/2p2P2/2B5

#2

11 + 9

6004 Henk Hagedoorn Solving Ty. 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Sxd6#
    • 1...Kf5
      • 2.Rxf4#
  • Tries
    • 1.Sd2+?
      • 1...Kf5
        • 2.Rg5#
      • 1...Ke5!
    • 1.f3+?
      • 1...Kd3
        • 2.Sb2#
        • 2.Se5#
        • 2.Sxd6#
      • 1...Kf5
        • 2.Rxf4#
        • 2.Rg5#
      • 1...Kxf3!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qxd5#
      • 1...Kd3
        • 2.Sxd6#
      • 1...Kf3
        • 2.Sd2#
      • 1...Kf5
        • 2.Rxf4#
      • 1...dxc4
        • 2.Qd5#
      • 1...Rf5
        • 2.Qe3#
      • 1...d4
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINB(f),N_SPINP(c),S_FLIGHT::B(H)+S(E),XS(e)
    • K(b);N_PINR(F),N_SPINB(f),N_SPINP(c),S_FLIGHT::R1(F),XP(c)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);N_PINR(F),N_SPINB(f),N_SPINP(c),S_FLIGHT::R1(F)
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT
    • Try
      • P(B);CHECK
      • Refutation
        • K(b);N_SPINB(f),N_SPINP(c),S_FLIGHT,XP(B)
  • Actual
    • Q(K);
    • Threat
      • QAB1(K),XP(d)
    • Vars
      • K(b);N_SPINB(f),N_SPINP(c),S_FLIGHT::B(H)+S(E),XS(e)
      • K(b);N_SPINB(f),N_SPINP(c),S_FLIGHT::S(E)
      • K(b);N_PINR(F),N_SPINB(f),N_SPINP(c),P_SPINP(d),S_FLIGHT::R1(F),XP(c)
      • P(d);XS(E)::QAB1(K)
      • R(g);N_PINR(F),SBLOCK::QAR1(K)
      • P(d);::S(E)
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