MESON Chess Problem Database

Problem Display
PID: 226547 (2Q5/3p3N/3pkPp1/8/4N1Kb/2P3n1/b2n1R1B/3R3B w - - 0 1)

Hermanson, Halvar

Tidskrift for Schack, 1977

2Q5/3p3N/3pkPp1/8/4N1Kb/2P3n1/b2n1R1B/3R3B

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qe8#
    • 1...Sb1
      • 2.Qe8#
    • 1...Sdf1
      • 2.Qe8#
    • 1...Sb3
      • 2.Qe8#
    • 1...Sf3
      • 2.Qe8#
    • 1...Sc4
      • 2.Qe8#
    • 1...Sdxe4
      • 2.Qe8#
    • 1...Sgf1
      • 2.Qg8#
    • 1...Sxh1
      • 2.Qg8#
    • 1...Se2
      • 2.Qg8#
    • 1...Sgxe4
      • 2.Qg8#
    • 1...Sf5
      • 2.Qg8#
    • 1...Sh5
      • 2.Qg8#
    • 1...d5
      • 2.Qe8#
  • Tries
    • 1.Seg5+?
      • 1...Bxg5
        • 2.Qe8#
      • 1...Ke5!
  • Keys
    • 1.Re2!
      • threat
        • 2.Seg5#
      • 1...Kd5
        • 2.Sxg3#
      • 1...Ke5
        • 2.Sxd2#
      • 1...Kf7
        • 2.Sxd6#
      • 1...Sdxe4
        • 2.Qe8#
      • 1...Sxh1
        • 2.Qg8#
      • 1...Sxe2
        • 2.Qg8#
      • 1...Sgxe4
        • 2.Qg8#
      • 1...Bg5
        • 2.Sexg5#
      • 1...d5
        • 2.Qe8#
      • 1...g5
        • 2.Sexg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • B(a);SBLOCK::QAR2(J)
    • S(b);::QAR2(J)
    • S(b);XS(F)::QAR2(J)
    • S(c);::QAB(J)
    • S(c);XB(B)::QAB(J)
    • S(c);XS(F)::QAB(J)
    • P(e);SBLOCK::QAR2(J)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • B(d);XS(F)::QAR2(J)
      • Refutation
        • K(f);N_SPINP(h),P-FLIGHT,P_SPINS(c)
  • Actual
    • R(C);
    • Threat
      • R(C)+S(F),DCHECK
    • Vars
      • K(f);N_SPINP(h),P_SPINS(b),S_FLIGHT::B(B)+S(F),XS(c)
      • K(f);N_SPINP(h),P-FLIGHT,P_SPINS(c)::R(C)+S(F),XS(b)
      • K(f);N_SPINP(h),S_FLIGHT::S(F),XP(e)
      • S(b);P_SPINS(b),XS(F)::QAR2(J)
      • S(c);XB(B)::QAB(J)
      • S(c);XR(C)::QAB(J)
      • S(c);P_SPINS(c),XS(F)::QAB(J)
      • B(d);::R(C)+S(F),DCHECK,XB(d)
      • P(e);SBLOCK::QAR2(J)
      • P(g);::R(C)+S(F),DCHECK,XP(g)
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Developed and maintained by Brian Stephenson.
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