MESON Chess Problem Database

Problem Display
PID: 272912 (BB1RR1n1/KNN1r3/p4r2/Qb2kpPn/2Pp3P/2P1pPp1/8/8 w - - 0 1)

Lies, Heinz

Die Schwalbe, 1932

BB1RR1n1/KNN1r3/p4r2/Qb2kpPn/2Pp3P/2P1pPp1/8/8

#2

13 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Sxb5#
      • 2.Sd5#
      • 2.Sxa6#
      • 2.Sxe6#
    • 1...Sf4
      • 2.cxd4#
    • 1...f4
      • 2.Rd5#
  • Tries
    • 1.Se6+?
      • 1...Rc7
        • 2.Bxc7#
        • 2.Rd5#
        • 2.Qxc7#
        • 2.cxd4#
      • 1...Kxe6!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sd3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Bd7
        • 2.S7e6#
      • 1...Sf4
        • 2.cxd4#
      • 1...d3
        • 2.Sxd3#
      • 1...f4
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(g);SBLOCK::P(A),XP(c)
    • P(f);SBLOCK::R1(L)
  • Tries
    • Try
      • S(I);CHECK,N_PINR(j),P_SPINS(H)
      • Refutation
        • K(e);N_SPINB(d),P-FLIGHT,P_SPINR(j),XS(I)
  • Actual
    • S(H);N_PINB(d),P_SPINS(I)
    • Threat
      • S(H)
    • Vars
      • K(e);N_SPINR(j),S_FLIGHT::S(H)
      • B(d);N_PINS(I)::B(K)+S(I)
      • S(g);SBLOCK::P(A),XP(c)
      • P(c);::S(H),XP(c)
      • P(f);SBLOCK::R1(L)
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