MESON Chess Problem Database

Problem Display
PID: 30939 (3Rr2q/1Q1N4/B3p3/1pp2p2/3k2NR/5p2/1K2pP2/1b6 w - - 0 1)

Servais, Albert

Match: Paris - Prague, 1946

3Rr2q/1Q1N4/B3p3/1pp2p2/3k2NR/5p2/1K2pP2/1b6

#2

8 + 10

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1947
100 Parallele 50 1949
78 Bulletin Ouvrier des Echecs 1955

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3+
      • 2.Sde5#
    • 1...Kc4+
      • 2.Sge5#
  • Tries
    • 1.Sdf6+?
      • 1...Kc4
        • 2.Se3#
        • 2.Se5#
        • 2.Qxb5#
      • 1...Rxd8!
    • 1.Sb8+?
      • 1...Kc4+
        • 2.Se5#
      • 1...Rxd8!
    • 1.Sf8+?
      • 1...Kc4+
        • 2.Se5#
      • 1...Rxd8!
  • Keys
    • 1.Qxb5!
      • threat
        • 2.Qc4#
      • 1...Ke4+
        • 2.Sgf6#
      • 1...Kd5+
        • 2.Sdf6#
      • 1...Ba2
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...c4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • K(d);CHECK,P-FLIGHT,P_SPINP(e)::R(H)+S(G),DCHECK
    • K(d);CHECK,P-FLIGHT,P_SPINP(e)::R(D)+S(C),DCHECK
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • R(i);XR(H)
    • Try
      • S(G);CHECK
      • Vars
        • K(d);CHECK,P-FLIGHT,P_SPINP(e)::R(D)+S(C),DCHECK
      • Refutation
        • R(i);XR(H)
    • Try
      • S(G);CHECK
      • Vars
        • K(d);CHECK,P-FLIGHT,P_SPINP(e)::R(D)+S(C),DCHECK
      • Refutation
        • R(i);XR(H)
  • Actual
    • Q(F);XP(e)
    • Threat
      • QAR1(F)
    • Vars
      • K(d);CHECK,P-FLIGHT::R(D)+S(C),DCHECK
      • K(d);CHECK,P-FLIGHT,P_SPINP(f)::R(H)+S(G),DCHECK
      • B(a);N_GUARD::QAR1(F)
      • B(a);N_GUARD::QAR1(F),XB(a)
      • P(f);::QAR1(F),XP(f)
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Developed and maintained by Brian Stephenson.
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