MESON Chess Problem Database

Problem Display
PID: 99184 (1Q6/B2pK3/3N4/R4P2/Rb2NkPp/2P4P/4Pp2/5B2 w - - 0 1)

Istokovics, Ferenc

Magyar Sakkszovetseg, 1977

1Q6/B2pK3/3N4/R4P2/Rb2NkPp/2P4P/4Pp2/5B2

#2

13 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6+
      • 2.Qxd6#
  • Tries
    • 1.Sd2?
      • 1...Kg5
        • 2.Be3#
      • 1...Kg3!
    • 1.Sxf2?
      • 1...Kg5
        • 2.Be3#
      • 1...Kg3!
    • 1.Sg5?
      • 1...Kxg5
        • 2.Be3#
      • 1...Kg3!
    • 1.Sf6?
      • 1...Kg5
        • 2.Be3#
      • 1...Kg3!
  • Keys
    • 1.Sc5!
      • 1...Ke3
        • 2.Sc4#
      • 1...Kg3
        • 2.Sde4#
      • 1...Ke5
        • 2.Sd3#
      • 1...Kg5
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(b);CHECK,OGATE,P_SPINB(b),XS(J)::QAB(M),XB(b)
  • Tries
    • Try
      • S(F);P_PINB(b)
      • Vars
        • K(c);N_SPINB(b),S_FLIGHT::B(K)
      • Refutation
        • K(c);N_SPINB(b),S_FLIGHT
    • Try
      • S(F);P_PINB(b),XP(a)
      • Vars
        • K(c);N_SPINB(b),S_FLIGHT::B(K)
      • Refutation
        • K(c);N_SPINB(b),S_FLIGHT
    • Try
      • S(F);P_PINB(b)
      • Vars
        • K(c);N_SPINB(b),S_FLIGHT,XS(F)::B(K)
      • Refutation
        • K(c);N_SPINB(b),S_FLIGHT
    • Try
      • S(F);P_PINB(b)
      • Vars
        • K(c);N_SPINB(b),S_FLIGHT::B(K)
      • Refutation
        • K(c);N_SPINB(b),S_FLIGHT
  • Actual
    • S(F);N_SPINS(J),P_PINB(b)
    • Vars
      • K(c);N_SPINB(b),S_FLIGHT::S(J)
      • K(c);N_SPINB(b),S_FLIGHT::QAB(M)+S(J),DCHECK
      • K(c);N_SPINB(b),S_FLIGHT::R(H)+S(F),DCHECK
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