MESON Chess Problem Database

Problem Display
PID: 256511 (Q7/4n2n/p1r3p1/r7/pRN1kBB1/6P1/2K1N3/6b1 w - - 0 1)

Ellerman, Arnoldo

Wiener Schachzeitung, 1931

Q7/4n2n/p1r3p1/r7/pRN1kBB1/6P1/2K1N3/6b1

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qxc6+?
      • 1...Rd5
        • 2.Sd2#
        • 2.Se3#
        • 2.Sd6#
      • 1...Sd5
        • 2.Sd2#
        • 2.Se3#
        • 2.Sd6#
        • 2.Qe6#
        • 2.Qxg6#
      • 1...Sxc6!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Sc3#
      • 1...Kd5
        • 2.Qe5#
      • 1...Re5
        • 2.Qxe5#
      • 1...Rf6
        • 2.Se3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sd5
        • 2.Qe5#
      • 1...Sf6
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);CHECK,N_SPINS(E),XR(f)
      • Refutation
        • S(h);XQ(H)
  • Actual
    • Q(H);N_PINR(f)
    • Threat
      • S(B)
    • Vars
      • K(c);S_CUTR(d),S_FLIGHT::QAR1(H)
      • R(d);N_GUARD::QAR1(H),XR(d)
      • R(f);N_PINS(E)::R(D)+S(E)
      • B(a);N_GUARD::QAR1(H),XB(a)
      • S(h);S_CUTR(d)::QAR1(H)
      • S(i);OGATE::QAB(H)
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