MESON Chess Problem Database

Problem Display
PID: 53529 (3nK1B1/3N1r2/2pp4/2qkB1bR/R1nP4/3P3Q/2N5/7b w - - 0 1)

Hassberg, Eric Manfred

Chess Life, 1955

3nK1B1/3N1r2/2pp4/2qkB1bR/R1nP4/3P3Q/2N5/7b

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4
      • 2.Sxb4#
    • 1...Qxd4
      • 2.Sb4#
    • 1...Qa7
      • 2.Sb4#
    • 1...Bc1
      • 2.Sf6#
    • 1...Bd2
      • 2.Sf6#
    • 1...Be3
      • 2.Sf6#
    • 1...Bf4
      • 2.Sf6#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Bh6
      • 2.Sf6#
    • 1...Sb7
      • 2.Bxf7#
  • Tries
    • 1.Se3+?
      • 1...Bxe3
        • 2.Sf6#
      • 1...Sxe3!
    • 1.Bxf7+?
      • 1...Se6
        • 2.Bxe6#
        • 2.Qxe6#
        • 2.Qxh1#
      • 1...Sxf7!
    • 1.Qf3+?
      • 1...Ke6
        • 2.Sf8#
      • 1...Bxf3!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Sf6#
      • 1...Qxd4
        • 2.Sb4#
      • 1...Se5
        • 2.Se3#
      • 1...Se6
        • 2.Qxh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(c);N_GUARD::S(A),XQ(c)
    • Q(c);N_GUARD,XP(E)::S(A)
    • Q(c);N_GUARD::S(A)
    • B(e);N_GUARD::S(H)
    • B(e);N_GUARD::S(H),XB(e)
    • S(i);N_GUARD::B(J),XR(h)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • B(e);XS(A)::S(H)
      • Refutation
        • S(b);XS(A)
    • Try
      • B(J);CHECK,XR(h)
      • Refutation
        • S(i);XB(J)
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);S_FLIGHT::S(H)
      • Refutation
        • B(a);XQ(C)
  • Actual
    • B(F);P_PINB(e)
    • Threat
      • S(H)
    • Vars
      • Q(c);N_GUARD,SBLOCK,XP(E)::S(A)
      • S(b);N_GUARD,N_SPINB(e)::S(A)
      • S(i);N_SPINR(h),SBLOCK::QAB(C),XB(a)
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