MESON Chess Problem Database

Problem Display
PID: 161182 (1B1K4/1QN5/6bR/1Nkp1p2/1p3P2/3qp3/3R4/8 w - - 0 1)

Grolus, Johan

1st Prize, L-hoek, 1977-1978

1B1K4/1QN5/6bR/1Nkp1p2/1p3P2/3qp3/3R4/8

#2

8 + 7

15611 Schaak-composities 1975-1979 (de Vuyst) 1982

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Rxc2#
    • 1...Qc4
      • 2.Sa6#
      • 2.Se6#
      • 2.Ba7#
    • 1...Bh5
      • 2.Rc6#
      • 2.Qc6#
    • 1...Bf7
      • 2.Rc6#
      • 2.Qc6#
    • 1...Bh7
      • 2.Rc6#
      • 2.Qc6#
  • Tries
    • 1.Qa7+?
      • 1...Kc6
        • 2.Rxg6#
      • 1...Kc4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Se6#
      • 1...Kd4
        • 2.Qxb4#
      • 1...Kxd6
        • 2.Qb6#
      • 1...Qe4
        • 2.Sa6#
      • 1...Bf7
        • 2.Ba7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(a);N_GUARD::R(A),XQ(a)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINB(g)::R(D),XB(g)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • S(F)
    • Vars
      • K(d);P_SPINQ(a),S_FLIGHT::QAR2(E),XP(c)
      • K(d);P_SPINB(g),S_FLIGHT,XS(C)::QAR2(E)
      • Q(a);N_GUARD::S(F)
      • B(g);::B(G)
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