MESON Chess Problem Database

Problem Display
PID: 55438 (8/nK6/1pPpQ1Pp/4p3/r3k2r/3NpN2/8/3RBR2 w - - 0 1)

Berg, Wolfgang

Troll, 1992

8/nK6/1pPpQ1Pp/4p3/r3k2r/3NpN2/8/3RBR2

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qxe5#
  • Tries
    • 1.Sdxe5?
      • threat
        • 2.Sd3#
      • 1...Kf4
        • 2.Sd3#
      • 1...dxe5
        • 2.Qxe5#
      • 1...Ra5
        • 2.Rd4#
      • 1...Rh5
        • 2.Qg4#
      • 1...Sxc6!
  • Keys
    • 1.Sfxe5!
      • threat
        • 2.Sf3#
      • 1...Kd4
        • 2.Sf3#
      • 1...Sxc6
        • 2.Sxc6#
      • 1...dxe5
        • 2.Qxe5#
      • 1...Ra5
        • 2.Qc4#
      • 1...Rh5
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(g);N_GUARD::QAR1(G),XP(e)
  • Tries
    • Try
      • S(D);XP(e)
      • Threat
        • QAR(G)+S(D)
      • Vars
        • K(c);P-FLIGHT::S(D)
        • P(g);OGATE,P_SPINP(g),XS(D)::QAR1(G),XP(g)
        • R(b);N_GUARD::R1(A)
        • R(d);N_GUARD::QAR2(G)
      • Refutation
        • S(i);XP(F)
  • Actual
    • S(E);XP(e)
    • Threat
      • QAR(G)+S(E)
    • Vars
      • K(c);P-FLIGHT::S(E)
      • S(i);XP(F)::QAR(G)+S(E),XS(i)
      • P(g);OGATE,P_SPINP(g),XS(E)::QAR1(G),XP(g)
      • R(b);N_GUARD::QAR2(G)
      • R(d);N_GUARD::R1(C)
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