MESON Chess Problem Database

Problem Display
PID: 76138 (8/Q7/p2p4/p2rb3/7B/1R1pP3/3kP3/1K1NR1n1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

3rd Prize, Troll, 2004

8/Q7/p2p4/p2rb3/7B/1R1pP3/3kP3/1K1NR1n1

#2

8 + 8

23 Die Schwalbe 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rb2#
    • 1...Rc5
      • 2.Rxd3#
    • 1...Bb2
      • 2.Rxb2#
    • 1...Bh2
      • 2.Rb2#
    • 1...Bd4
      • 2.Rxd3#
    • 1...Bf4
      • 2.Rb2#
  • Tries
    • 1.Qc7?
      • threat
        • 2.Qc1#
      • 1...Bg3
        • 2.Qc3#
      • 1...Rc5
        • 2.Rxd3#
      • 1...Bb2
        • 2.Rxb2#
      • 1...Bc3
        • 2.Qxc3#
      • 1...Sxe2!
    • 1.e4?
      • threat
        • 2.Qe3#
      • 1...Rd4
        • 2.Rb2#
      • 1...Rc5
        • 2.Rxd3#
      • 1...Bd4
        • 2.Rxd3#
      • 1...Bf4
        • 2.Rb2#
      • 1...Bg3!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Rb2#
        • 2.Rxd3#
      • 1...Rxd4
        • 2.Rb2#
      • 1...Bxd4
        • 2.Rxd3#
      • 1...Bg3
        • 2.Qc3#
      • 1...Rb5
        • 2.Qxd3#
      • 1...Rc5
        • 2.Rxd3#
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(e);S_CUTB(f)::R(E)
    • R(e);N_GUARD::R1(E),XP(c)
    • B(f);N_GUARD::R(E),XB(f)
    • B(f);N_GUARD::R(E)
    • B(f);S_CUTR(e)::R1(E),XP(c)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • B(f);N_GUARD::QAB1(H)
        • R(e);N_GUARD::R1(E),XP(c)
        • B(f);N_GUARD::R(E),XB(f)
        • B(f);N_GUARD::QAB1(H),XB(f)
      • Refutation
        • S(a);XP(D)
    • Try
      • P(F);
      • Threat
        • QAB1(H)
      • Vars
        • R(e);S_CUTB(f)::R(E)
        • R(e);N_GUARD::R1(E),XP(c)
        • B(f);S_CUTR(e)::R1(E),XP(c)
        • B(f);N_GUARD::R(E)
      • Refutation
        • B(f);
  • Actual
    • Q(H);P_PINP(c)
    • Threat
      • DUALS(2)
    • Vars
      • R(e);N_SPINP(c),XQ(H)::R(E)
      • B(f);N_SPINP(c),XQ(H)::R1(E),XP(c)
      • B(f);N_GUARD::QAB1(H)
      • R(e);N_GUARD,P_PINR(E)::QAR1(H),XP(c)
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