MESON Chess Problem Database

Problem Display
PID: 234354 (5b2/7p/5nnQ/2p5/K3k1Pp/pN2PN1R/B1P4q/2BR4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Skakbladet, 1940

5b2/7p/5nnQ/2p5/K3k1Pp/pN2PN1R/B1P4q/2BR4

#2

11 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sbd2#
    • 1...Qg3
      • 2.Sbd2#
    • 1...Qe5
      • 2.Sbd2#
    • 1...Qc7
      • 2.Sbd2#
    • 1...Qb8
      • 2.Sbd2#
    • 1...Qh1
      • 2.Sbd2#
    • 1...Qd2
      • 2.Sbxd2#
    • 1...Qxh3
      • 2.Sbd2#
    • 1...Bxh6
      • 2.Sxc5#
    • 1...Bg7
      • 2.Sxc5#
    • 1...Se5
      • 2.Sg5#
    • 1...Se7
      • 2.Sxc5#
    • 1...c4
      • 2.Rd4#
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qf5#
      • 1...Sxg4
        • 2.Qd5#
      • 1...Qf4
        • 2.Sfd2#
      • 1...Qe5
        • 2.Sbd2#
      • 1...Qd2
        • 2.Sbxd2#
        • 2.Sfxd2#
      • 1...Se7
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • Q(a);N_GUARD::S(E)
    • Q(a);N_GUARD::S(E),XQ(a)
    • Q(a);N_GUARD,XR(H)::S(E)
    • B(i);N_GUARD,XQ(K)::S(E),XP(e)
    • B(i);N_GUARD::S(E),XP(e)
    • S(g);SBLOCK::S(G)
    • S(g);S_CUTB(i)::S(E),XP(e)
    • P(e);N_GUARD::R1(B)
  • Actual
    • Q(K);
    • Threat
      • QAB1(K)
    • Vars
      • S(f);N_GUARD,XP(J)::QAB1(K)
      • Q(a);N_GUARD::S(G)
      • Q(a);N_GUARD::S(E)
      • S(g);S_CUTB(i)::S(E),XP(e)
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