MESON Chess Problem Database

Problem Display
PID: 233302 (3r2n1/4B3/Q5p1/3pkp2/3pPp2/5P2/4N2K/1r2R3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach-Aktiv, 2009

3r2n1/4B3/Q5p1/3pkp2/3pPp2/5P2/4N2K/1r2R3

#2

7 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qxd6#
    • 1...Ra8
      • 2.Qd6#
    • 1...Rb8
      • 2.Qd6#
    • 1...Rc8
      • 2.Qd6#
    • 1...Re8
      • 2.Qd6#
    • 1...Rf8
      • 2.Qd6#
    • 1...Sf6
      • 2.Bxf6#
      • 2.Qxf6#
    • 1...Sh6
      • 2.Bf6#
      • 2.Qf6#
  • Tries
    • 1.exf5?
      • threat
        • 2.Qe6#
      • 1...Kxf5
        • 2.Sxd4#
      • 1...gxf5
        • 2.Sc1#
      • 1...Rb6
        • 2.Sg3#
      • 1...Rd6!
  • Keys
    • 1.exd5!
      • threat
        • 2.Qe6#
      • 1...Kxd5
        • 2.Sxf4#
      • 1...Rxd5
        • 2.Sc1#
      • 1...Rb6
        • 2.Sc3#
      • 1...Rd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(h);N_GUARD::QAB1(F),XR(h)
    • R(h);N_GUARD::QAB1(F)
  • Tries
    • Try
      • P(E);XP(f)
      • Threat
        • QAR1(F)
      • Vars
        • K(e);P-FLIGHT,XP(E)::S(B),XP(b)
        • P(g);SBLOCK,XP(E)::R(A)+S(B)
        • R(a);N_GUARD::R(A)+S(B)
      • Refutation
        • R(h);
  • Actual
    • P(E);XP(d)
    • Threat
      • QAR1(F)
    • Vars
      • K(e);P-FLIGHT,XP(E)::S(B),XP(c)
      • R(h);SBLOCK,XP(E)::R(A)+S(B)
      • R(a);N_GUARD::R(A)+S(B)
      • R(h);N_GUARD::QAB1(F),XR(h)
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