MESON Chess Problem Database

Problem Display
PID: 51008 (3nb3/5p2/2p1kP2/4B1pp/2N5/1B2N3/r2b2QK/2rR4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

The Spectator, 1958

3nb3/5p2/2p1kP2/4B1pp/2N5/1B2N3/r2b2QK/2rR4

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Sb6#
    • 1...Be1
      • 2.Rd6#
    • 1...Bc3
      • 2.Rd6#
    • 1...Ba5
      • 2.Rd6#
    • 1...h4
      • 2.Qg4#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qf5#
      • 1...Kd7
        • 2.Sb6#
      • 1...Bxe3
        • 2.Rd6#
      • 1...Be1
        • 2.Rd6#
      • 1...Bc3
        • 2.Rd6#
      • 1...Ba5
        • 2.Rd6#
      • 1...Bb4!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qf5#
      • 1...Be1+
        • 2.Bb2#
      • 1...Bc3+
        • 2.Sb2#
      • 1...Bxe3+
        • 2.Bb2#
      • 1...Bb4+
        • 2.Bb2#
      • 1...Ba5+
        • 2.Bb2#
      • 1...Kd7
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(g);P_SPINB(c),S_FLIGHT::S(F)
    • B(c);OGATE,P_PINQ(B)::R1(A)
    • P(e);N_GUARD::QAB(B)
    • P(f);N_GUARD::QAB1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(g);P_SPINB(c),S_FLIGHT::S(F)
        • B(c);OGATE,P_PINQ(B),XS(E)::R1(A)
        • B(c);OGATE,P_PINQ(B)::R1(A)
      • Refutation
        • B(c);P_PINQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • B(c);CHECK::QAR(B)+B(G)
      • B(c);CHECK,S_CUTR(a)::B(D)+S(F)
      • B(c);CHECK,XS(E)::QAR(B)+B(G)
      • K(g);P_SPINB(c),S_FLIGHT::S(F)
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