MESON Chess Problem Database

Problem Display
PID: 82214 (3R2K1/8/4p3/2r1P3/1q1Nk1P1/1p5p/4PBnQ/7N w - - 0 1)

Ahues, Herbert Siegfried Oskar

Sinfonie Scacchistiche, 1978

3R2K1/8/4p3/2r1P3/1q1Nk1P1/1p5p/4PBnQ/7N

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Rxd4#
  • Tries
    • 1.Sxe6?
      • threat
        • 2.Sg5#
      • 1...Rxe5
        • 2.Sg3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Qd2
        • 2.Sxc5#
      • 1...Qc4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sg5#
      • 1...Rxe5
        • 2.Qxe5#
      • 1...Qd2
        • 2.Sxd2#
      • 1...Sf4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(d);OGATE,XS(E)::R1(H),XQ(d)
  • Tries
    • Try
      • S(E);XP(g)
      • Threat
        • S(E)
      • Vars
        • R(f);SBLOCK,XP(G)::S(A)
        • S(a);N_GUARD::QAR1(D),XS(a)
        • Q(d);N_GUARD::S(E),XR(f)
      • Refutation
        • Q(d);P_PINS(E)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • R(f);OGATE,XP(G)::QAR1(D),XR(f)
      • Q(d);N_GUARD::S(E),XQ(d)
      • S(a);SBLOCK::S(A)
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