MESON Chess Problem Database

Problem Display
PID: 55596 (3R1nB1/Bp3N2/2p4b/2nPP3/q2Nk1K1/7R/pQ2P3/1b6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

1st Prize, Schach-Echo, 1975

3R1nB1/Bp3N2/2p4b/2nPP3/q2Nk1K1/7R/pQ2P3/1b6

#2

11 + 9

702 Phenix 1988
133 The Problemist Supplement 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Bh7#
    • 1...Sh7
      • 2.Bxh7#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sd6#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Sfe6
        • 2.Bh7#
      • 1...Sce6!
    • 1.Sb3?
      • threat
        • 2.Sxc5#
        • 2.Sd6#
      • 1...Qxb3
        • 2.Sd6#
      • 1...Qxa7
        • 2.Sd6#
        • 2.Qd4#
      • 1...Sxb3
        • 2.Sd6#
      • 1...Scd7
        • 2.Sd6#
      • 1...Sfd7
        • 2.Sd6#
      • 1...Qb5
        • 2.Sd6#
        • 2.Qd4#
      • 1...Qa3
        • 2.Sd6#
        • 2.Qd4#
      • 1...Qb4
        • 2.Sd6#
      • 1...Qc4
        • 2.Sd6#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qa5
        • 2.Sd6#
        • 2.Qd4#
      • 1...Be3
        • 2.Sd6#
      • 1...Sd3
        • 2.Sd6#
      • 1...Sa6
        • 2.Sd6#
      • 1...Sfe6
        • 2.Bh7#
      • 1...b6
        • 2.Sd6#
      • 1...Sce6!
    • 1.Sf5?
      • threat
        • 2.S7d6#
      • 1...Sce6
        • 2.Sg3#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Sfe6!
    • 1.Sxc6?
      • threat
        • 2.Sd6#
      • 1...Qxc6
        • 2.Qb4#
      • 1...Sfe6
        • 2.Bh7#
      • 1...Sce6!
    • 1.Bh7+?
      • 1...Sg6
        • 2.Bxg6#
      • 1...Sxh7!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sfd6#
      • 1...Sce6
        • 2.Sc3#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Sfe6
        • 2.Bh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(i);N_GUARD::B(K)
    • S(i);N_GUARD::B(K),XS(i)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(I)
      • Vars
        • Q(c);N_GUARD::QAR1(A),XQ(c)
        • S(i);N_GUARD::B(K)
      • Refutation
        • S(e);
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);XS(D)::S(I)
        • S(e);XS(D)::S(I)
        • S(e);::S(I)
        • S(i);::S(I)
        • Q(c);::S(I)
        • Q(c);N_GUARD::QAR1(A),XQ(c)
        • B(g);::S(I)
        • S(i);N_GUARD::B(K)
        • P(h);::S(I)
      • Refutation
        • S(e);
    • Try
      • S(D);
      • Threat
        • S(I)
      • Vars
        • S(e);::S(D)
        • Q(c);N_GUARD::QAR1(A),XQ(c)
      • Refutation
        • S(i);
    • Try
      • S(D);XP(f)
      • Threat
        • S(I)
      • Vars
        • Q(c);N_GUARD,XS(D)::QAR(A)
        • S(i);N_GUARD::B(K)
      • Refutation
        • S(e);
    • Try
      • B(K);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::B(K),XS(i)
      • Refutation
        • S(i);XB(K)
  • Actual
    • S(D);
    • Threat
      • S(I)
    • Vars
      • S(e);::S(D)
      • Q(c);N_GUARD::QAR1(A),XQ(c)
      • S(i);N_GUARD::B(K)
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