MESON Chess Problem Database

Problem Display
PID: 187028 (2r2b2/8/B1p1N3/3Pp2q/1p2k3/1K1Rp2r/4NRP1/4Q3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Landeszeitung fur die Luneburger Heide, 2001

(First published on Sat Feb 3 2001)

2r2b2/8/B1p1N3/3Pp2q/1p2k3/1K1Rp2r/4NRP1/4Q3

#2

9 + 9

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe2
      • 2.Sg5#
    • 1...Qf7
      • 2.Sg5#
    • 1...Qe8
      • 2.Sg5#
    • 1...Qg5
      • 2.Sxg5#
    • 1...Qh7
      • 2.Sg5#
    • 1...Qh8
      • 2.Sg5#
    • 1...Rh1
      • 2.Sg3#
    • 1...Rh2
      • 2.Sg3#
    • 1...Rg3
      • 2.Sxg3#
    • 1...Rh4
      • 2.Sg3#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Bh6
      • 2.Sc5#
      • 2.Qxb4#
    • 1...Bg7
      • 2.Sc5#
      • 2.Qxb4#
    • 1...exf2
      • 2.Sg3#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd4#
      • 1...Qxe2
        • 2.Sg5#
        • 2.Rd4#
      • 1...cxd5
        • 2.Rc3#
        • 2.Rd4#
      • 1...Rh1
        • 2.Sg3#
        • 2.Rd1#
        • 2.Rd4#
      • 1...exf2!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Qb1#
      • 1...exd2+
        • 2.Sc3#
      • 1...exf2+
        • 2.Sg3#
      • 1...Qxe2
        • 2.Sg5#
      • 1...cxd5
        • 2.Bd3#
      • 1...Rh1
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(f);N_GUARD,XS(B)::S(I)
    • Q(f);N_GUARD::S(I)
    • Q(f);N_GUARD::S(I),XQ(f)
    • R(b);N_GUARD::S(B)
    • R(b);N_GUARD::S(B),XR(b)
    • B(i);N_GUARD::S(I),XB(i)
    • P(a);P_PINR(F),XR(C)::QAR(A)+S(B),DCHECK
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • P(a);P_PINR(F),XR(C)
  • Actual
    • R(F);
    • Threat
      • QAB(A)
    • Vars
      • P(a);CHECK,XR(F)::QAR(A)+S(B),DCHECK
      • P(a);CHECK,XR(C)::QAR(A)+S(B),DCHECK
      • Q(f);N_GUARD,XS(B)::S(I)
      • P(g);SBLOCK,XP(G)::B(H)
      • R(b);N_GUARD::S(B)
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