MESON Chess Problem Database

Problem Display
PID: 149179 (1b1R4/5N2/2p3r1/B1pp4/3k2p1/1PpN4/4QP2/Kb3n2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Best Problems, 2010

1b1R4/5N2/2p3r1/B1pp4/3k2p1/1PpN4/4QP2/Kb3n2

#2

8 + 10

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qe3#
    • 1...Sh2
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sg3
      • 2.Qe3#
  • Tries
    • 1.Sc1?
      • threat
        • 2.Qc4#
      • 1...Se3
        • 2.Qxe3#
      • 1...c4
        • 2.Qxc4#
      • 1...Rd6
        • 2.Qe5#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Qe3#
      • 1...Bd6!
    • 1.Se1?
      • threat
        • 2.Qc4#
      • 1...Se3
        • 2.Qxe3#
      • 1...c4
        • 2.Qxc4#
      • 1...Rd6
        • 2.Qe5#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Qe3#
      • 1...Bd6!
    • 1.Sf4?
      • threat
        • 2.Qc4#
      • 1...Se3
        • 2.Qxe3#
      • 1...c4
        • 2.Qxc4#
      • 1...Rd6
        • 2.Qe5#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Qe3#
      • 1...Bd6!
    • 1.Sde5?
      • threat
        • 2.Qc4#
      • 1...Se3
        • 2.Qxe3#
      • 1...c4
        • 2.Qxc4#
      • 1...Bd6
        • 2.Sxc6#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Qe3#
      • 1...Rd6!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qc4#
      • 1...Se3
        • 2.Qxe3#
      • 1...c4
        • 2.Qxc4#
      • 1...Bd6
        • 2.Sxc6#
      • 1...Rd6
        • 2.Qe5#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::QAB1(B)
    • S(b);N_GUARD::QAB1(B),XS(b)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • S(b);N_GUARD::QAB1(B),XS(b)
        • P(f);::QAR1(B),XP(f)
        • R(i);N_SPINP(g),S_CUTB(j)::QAB1(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
        • S(b);N_GUARD::QAB1(B)
      • Refutation
        • B(j);N_SPINP(g)
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • S(b);N_GUARD::QAB1(B),XS(b)
        • P(f);::QAR1(B),XP(f)
        • R(i);N_SPINP(g),S_CUTB(j)::QAB1(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
        • S(b);N_GUARD::QAB1(B)
      • Refutation
        • B(j);N_SPINP(g)
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • S(b);N_GUARD::QAB1(B),XS(b)
        • P(f);::QAR1(B),XP(f)
        • R(i);N_SPINP(g),S_CUTB(j)::QAB1(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
        • S(b);N_GUARD::QAB1(B)
      • Refutation
        • B(j);N_SPINP(g)
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • S(b);N_GUARD::QAB1(B),XS(b)
        • P(f);::QAR1(B),XP(f)
        • B(j);N_SPINP(g),S_CUTR(i)::S(E),XP(h)
        • B(a);N_GUARD::QAR1(B),XB(a)
        • S(b);N_GUARD::QAB1(B)
      • Refutation
        • R(i);N_SPINP(g)
  • Actual
    • S(E);
    • Threat
      • QAR1(B)
    • Vars
      • S(b);N_GUARD::QAB1(B),XS(b)
      • P(f);::QAR1(B),XP(f)
      • B(j);N_SPINP(g),S_CUTR(i)::S(E),XP(h)
      • R(i);N_SPINP(g),S_CUTB(j)::QAB1(B)
      • B(a);N_GUARD::QAR1(B),XB(a)
      • S(b);N_GUARD::QAB1(B)
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