MESON Chess Problem Database

Problem Display
PID: 160709 (7n/5p2/K3p2r/p1B1k2p/r2pB2Q/n3N1p1/7b/4R3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Freie Presse, 1972

7n/5p2/K3p2r/p1B1k2p/r2pB2Q/n3N1p1/7b/4R3

#2

6 + 12

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • threat
        • 2.Bd6#
      • 1...exf5+
        • 2.Bc6#
      • 1...Sc4
        • 2.Bxd4#
      • 1...Sb5!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qf4#
      • 1...exd5+
        • 2.Bg6#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Sg6
        • 2.Qf6#
      • 1...g2
        • 2.Qxh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • B(E)
      • Vars
        • P(i);CHECK,SBLOCK,XS(B)::R(A)+B(C)
        • S(b);S_CUTR(d)::B(E),XP(e)
      • Refutation
        • S(b);
  • Actual
    • S(B);
    • Threat
      • QAB1(D)
    • Vars
      • P(i);CHECK,SBLOCK,XS(B)::R(A)+B(C)
      • R(j);N_GUARD::QAB1(D),XR(j)
      • S(l);S_CUTR(j)::QAB1(D)
      • P(c);OGATEB::QAB(D),XB(a)
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