MESON Chess Problem Database

Problem Display
PID: 241153 (1K2bB2/4NP2/2Pp1p2/2pBk3/4Np2/b7/1n4pn/3R2Q1 w - - 0 1)

Hermanson, Halvar

4th HM., Sachsische Zeitung, 1976-1977

1K2bB2/4NP2/2Pp1p2/2pBk3/4Np2/b7/1n4pn/3R2Q1

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Qxh2#
    • 1...c4
      • 2.Qd4#
    • 1...f5
      • 2.Sg6#
      • 2.Bg7#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Qe1#
      • 1...Sxd1
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...f3
        • 2.Qxh2#
      • 1...f5
        • 2.Bg7#
      • 1...Sc4
        • 2.Sd3#
      • 1...Sf1
        • 2.Sg4#
      • 1...Sf3
        • 2.Sg4#
      • 1...Sg4
        • 2.Sxg4#
      • 1...Bb4!
    • 1.Sxd6?
      • threat
        • 2.Sg6#
      • 1...Kxd6
        • 2.Sg6#
      • 1...Bxf7
        • 2.Sxf7#
      • 1...Sxd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...f5!
    • 1.Bg7?
      • threat
        • 2.Bxf6#
      • 1...f3
        • 2.Qxh2#
      • 1...Sg4!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Re1#
      • 1...Sxd1
        • 2.Sc4#
      • 1...f3
        • 2.Qe3#
      • 1...f5
        • 2.Bg7#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sf1
        • 2.Sf3#
      • 1...Sf3
        • 2.Sxf3#
      • 1...Sg4
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • P(e);OGATEB::QAB(B),XS(c)
    • P(f);N_GUARD::QAB1(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR(B)
      • Vars
        • S(a);N_GUARD,XR(A)::S(C)
        • S(a);N_GUARD::S(C),XS(a)
        • P(e);OGATEB::QAB(B),XS(c)
        • P(i);OGATEB::B(I)
        • S(a);N_GUARD::S(C)
        • S(c);N_GUARD::S(C)
        • S(c);N_GUARD::S(C),XS(c)
      • Refutation
        • B(d);
    • Try
      • S(C);XP(h)
      • Threat
        • S(F)
      • Vars
        • K(g);S_FLIGHT,XS(C)::B(I)+S(F)
        • B(j);XP(G)::S(C),XB(j)
        • S(a);N_GUARD,XR(A)::S(C)
        • S(a);N_GUARD::S(C)
      • Refutation
        • P(i);
    • Try
      • B(I);P_PINP(i)
      • Threat
        • B(I),XP(i)
      • Vars
        • P(e);OGATEB::QAB(B),XS(c)
      • Refutation
        • S(c);
  • Actual
    • S(C);
    • Threat
      • R(A)
    • Vars
      • S(a);N_GUARD,XR(A)::S(C)
      • P(e);N_GUARD::QAR2(B)
      • P(i);OGATEB::B(I)
      • S(a);N_GUARD::S(C)
      • S(a);N_GUARD::S(C),XS(a)
      • S(c);N_GUARD::S(C)
      • S(c);N_GUARD::S(C),XS(c)
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