MESON Chess Problem Database

Problem Display
PID: 141731 (4R3/q1p4b/2Q4B/pB6/1p2p1N1/7K/N1pPR3/2bk4 w - - 0 1)

Schogt, Hans

2nd HM., 08. Kwik-Toernooi, 1977

4R3/q1p4b/2Q4B/pB6/1p2p1N1/7K/N1pPR3/2bk4

#2

9 + 9

102 Probleemblad 1977

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.Sxf2#
    • 1...Qe3+
      • 2.Sxe3#
    • 1...Qb8
      • 2.Sf2#
      • 2.Se3#
    • 1...Qa6
      • 2.Sf2#
      • 2.Se3#
    • 1...Qb7
      • 2.Sf2#
      • 2.Se3#
    • 1...Qa8
      • 2.Sf2#
      • 2.Se3#
    • 1...b3
      • 2.Sc3#
    • 1...e3
      • 2.Qh1#
  • Tries
    • 1.Bd3?
      • threat
        • 2.Qxc2#
      • 1...Qe3+
        • 2.Sxe3#
      • 1...exd3
        • 2.Re1#
      • 1...b3
        • 2.Sc3#
      • 1...Qc5!
    • 1.Be3?
      • threat
        • 2.Sf2#
      • 1...Qxe3+
        • 2.Sxe3#
      • 1...Bf5!
  • Keys
    • 1.d4!
      • threat
        • 2.Sf2#
        • 2.Qxc2#
      • 1...Qxd4
        • 2.Qxc2#
      • 1...exd4 ep
        • 2.Re1#
      • 1...Qc5
        • 2.Sf2#
      • 1...Bd2
        • 2.Sf2#
      • 1...Be3
        • 2.Sxe3#
        • 2.Qxc2#
      • 1...Bf5
        • 2.Qxc2#
      • 1...b3
        • 2.Sc3#
        • 2.Sf2#
      • 1...e3
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD::S(E),XQ(g)
    • Q(g);CHECK,N_GUARD::S(E),XQ(g)
    • P(d);N_GUARD::S(A)
    • P(e);OGATE::QAR(G)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAB1(G),XP(c)
      • Vars
        • Q(g);CHECK,N_GUARD::S(E),XQ(g)
        • P(e);XB(F)::R1(C)
        • P(d);N_GUARD::S(A)
      • Refutation
        • Q(g);
    • Try
      • B(H);
      • Threat
        • S(E)
      • Vars
        • Q(g);CHECK,XB(H)::S(E),XQ(g)
      • Refutation
        • B(i);P_PINS(E)
  • Actual
    • P(B);
    • Threat
      • DUALS(2)
    • Vars
      • Q(g);XP(B)::QAB1(G),XP(c)
      • P(e);EP,XP(B)::R1(C)
      • Q(g);::S(E)
      • B(a);::S(E)
      • B(i);P_PINS(E)::QAB1(G),XP(c)
      • P(e);OGATE::QAR(G)
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