MESON Chess Problem Database

Problem Display
PID: 183566 (4Q3/3p4/1nBp1N2/p2p4/PrkP2K1/1pPp4/1P6/8 w - - 0 1)

Maleika, Gerhard

Sachova skladba, 2009

4Q3/3p4/1nBp1N2/p2p4/PrkP2K1/1pPp4/1P6/8

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Bxb5#
    • 1...Sa8
      • 2.Bxd5#
    • 1...Sc8
      • 2.Bxd5#
    • 1...d2
      • 2.Qe2#
    • 1...dxc6
      • 2.Qxc6#
  • Tries
    • 1.Sxd5?
      • threat
        • 2.Se3#
      • 1...d2
        • 2.Qe2#
      • 1...Sxd5!
    • 1.Qxd7?
      • 1...Rxa4
        • 2.Bb5#
      • 1...Sxa4
        • 2.Bxd5#
      • 1...Sxd7
        • 2.Bxd5#
      • 1...Rb5
        • 2.Bxb5#
      • 1...Sa8
        • 2.Bxd5#
      • 1...Sc8
        • 2.Bxd5#
      • 1...d2!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Bb5#
        • 2.Bxd5#
      • 1...Rxa4
        • 2.Qa6#
      • 1...Sxa4
        • 2.Bxa4#
      • 1...Sxc8
        • 2.Bxd5#
      • 1...dxc6
        • 2.Qxc6#
      • 1...d2
        • 2.Bb5#
      • 1...Rb5
        • 2.Bxb5#
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD::B(F),XR(c)
    • S(g);N_GUARD::B(F),XP(f)
    • P(b);OGATEB::QAB(H)
    • P(i);OGATE,XB(F)::QAR2(H),XP(i)
  • Tries
    • Try
      • S(G);XP(f)
      • Threat
        • S(G)
      • Vars
        • P(b);OGATEB::QAB(H)
      • Refutation
        • S(g);XS(G)
    • Try
      • Q(H);XP(i)
      • Vars
        • R(c);N_GUARD,XP(C)::B(F)
        • S(g);N_GUARD,XP(C)::B(F),XP(f)
        • S(g);N_GUARD,XQ(H)::B(F),XP(f)
        • R(c);N_GUARD::B(F),XR(c)
        • S(g);N_GUARD::B(F),XP(f)
      • Refutation
        • P(b);
  • Actual
    • Q(H);
    • Threat
      • DUALS(2)
    • Vars
      • R(c);N_GUARD,XP(C)::QAB(H)
      • S(g);OGATE,XP(C)::QAR(H)+B(F),XS(g)
      • S(g);XQ(H)::B(F),XP(f)
      • P(i);OGATE,P_SPINP(i),XB(F)::QAR2(H),XP(i)
      • P(b);::QAR(H)+B(F),DCHECK
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