MESON Chess Problem Database

Problem Display
PID: 232793 (8/2K2Q2/1N6/3Pk3/3pn3/7b/1n4P1/4R3 w - - 0 1)

Hultberg, Gustav Herbert

Freie Presse, 1974

8/2K2Q2/1N6/3Pk3/3pn3/7b/1n4P1/4R3

#2

6 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg2
      • 2.Sd7#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Sd1
      • 2.Sc4#
    • 1...Sd3
      • 2.Sc4#
    • 1...Sa4
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
  • Tries
    • 1.g3?
      • threat
        • 2.Qf4#
      • 1...Bf5
        • 2.Qg7#
      • 1...Sd3
        • 2.Sc4#
      • 1...d3!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Rxe4#
      • 1...Kf4
        • 2.Rxe4#
      • 1...Bxg2
        • 2.Qg5#
      • 1...Bf5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(b);N_GUARD,XP(B)::S(D)
    • B(b);N_GUARD::S(D),XB(b)
    • S(a);N_GUARD::S(D)
    • S(a);N_GUARD::S(D),XS(a)
  • Tries
    • Try
      • P(B);
      • Threat
        • QAB1(F)
      • Vars
        • B(b);SBLOCK::QAB(F)
        • S(a);N_GUARD::S(D)
      • Refutation
        • P(c);
  • Actual
    • Q(F);
    • Threat
      • R1(A),XS(d)
    • Vars
      • K(e);N_SPINS(d),S_FLIGHT::R1(A),XS(d)
      • B(b);N_GUARD,XP(B)::QAR2(F)
      • B(b);SBLOCK::QAB1(F)
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