MESON Chess Problem Database

Problem Display
PID: 161295 (5r2/1BQ5/p2p3b/3PNpB1/2Nk4/1n1ppP2/1K6/4R3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach, 1978

5r2/1BQ5/p2p3b/3PNpB1/2Nk4/1n1ppP2/1K6/4R3

#2

9 + 9

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bg7
      • 2.Bxe3#
    • 1...Sa1
      • 2.Qb6#
    • 1...Sc1
      • 2.Qb6#
    • 1...Sd2
      • 2.Qb6#
    • 1...Sa5
      • 2.Qb6#
  • Tries
    • 1.Sxd6?
      • threat
        • 2.Qc3#
      • 1...Kxe5
        • 2.Sb5#
      • 1...Rc8
        • 2.Sxf5#
      • 1...Sc5!
    • 1.Bxh6?
      • threat
        • 2.Bxe3#
      • 1...e2
        • 2.Be3#
      • 1...f4!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Qc3#
      • 1...Kxe5
        • 2.Sc2#
      • 1...Rc8
        • 2.Sxf5#
      • 1...Sc5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • B(h);N_GUARD::B(G),XP(c)
    • S(a);N_GUARD::QAB(I)
  • Tries
    • Try
      • S(D);XP(g)
      • Threat
        • QAB1(I)
      • Vars
        • K(d);P_SPINP(c),S_FLIGHT,XS(F)::QAB(I)+S(D)
        • R(i);N_GUARD::S(D),XP(e)
      • Refutation
        • S(a);
    • Try
      • B(G);XB(h)
      • Threat
        • B(G),XP(c)
      • Vars
        • P(c);::B(G)
      • Refutation
        • P(e);
  • Actual
    • S(D);XP(c)
    • Threat
      • QAB1(I)
    • Vars
      • K(d);P_SPINP(g),S_FLIGHT,XS(F)::R(A)+S(D)
      • R(i);N_GUARD::S(D),XP(e)
      • S(a);SBLOCK::S(F)
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