MESON Chess Problem Database

Problem Display
PID: 211368 (4K3/1bN5/2pp4/P1k1nQnR/1pP3R1/4q3/1B1N4/b3r3 w - - 0 1)

Haring, Jacobus

The Problemist, 1986

4K3/1bN5/2pp4/P1k1nQnR/1pP3R1/4q3/1B1N4/b3r3

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sb3#
    • 1...Qf2
      • 2.Sb3#
    • 1...Qe2
      • 2.Sb3#
    • 1...Qb3
      • 2.Sxb3#
    • 1...Ba6
      • 2.Sxa6#
    • 1...Ba8
      • 2.Sa6#
    • 1...Sf3
      • 2.Se6#
    • 1...Sh3
      • 2.Se6#
    • 1...Se4
      • 2.Se6#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sf7
      • 2.Se6#
    • 1...Sh7
      • 2.Se6#
    • 1...b3
      • 2.Ba3#
    • 1...d5
      • 2.Qf8#
  • Tries
    • 1.Rhxg5?
      • threat
        • 2.Se6#
      • 1...b3
        • 2.Ba3#
      • 1...d5
        • 2.Qf8#
      • 1...Bc8!
    • 1.Qxg5?
      • threat
        • 2.Se6#
      • 1...b3
        • 2.Ba3#
      • 1...d5
        • 2.Qe7#
      • 1...Bc8!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Sb3#
      • 1...Sd3+
        • 2.Se6#
      • 1...Sef3+
        • 2.Se6#
      • 1...Sxc4+
        • 2.Se4#
      • 1...Sxg4+
        • 2.Se6#
      • 1...Sg6+
        • 2.Se6#
      • 1...Sd7+
        • 2.Se6#
      • 1...Sef7+
        • 2.Se6#
      • 1...b3
        • 2.Ba3#
      • 1...d5
        • 2.Qf8#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Se4
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 11
  • Sets
    • Q(c);N_GUARD::S(B)
    • Q(c);N_GUARD::S(B),XQ(c)
    • B(j);N_GUARD::S(H),XB(j)
    • B(j);N_GUARD::S(H)
    • S(g);N_GUARD::S(H)
    • S(g);N_GUARD::S(H),XS(g)
    • P(d);OGATEB::B(A)
    • P(i);N_SPINS(f),OGATEB::QAB(F)
  • Tries
    • Try
      • R(G);XS(g)
      • Threat
        • S(H)
      • Vars
        • P(d);OGATEB::B(A)
        • P(i);N_SPINS(f),OGATEB::QAB(F)
      • Refutation
        • B(j);
    • Try
      • Q(F);XS(g)
      • Threat
        • S(H)
      • Vars
        • P(d);OGATEB::B(A)
        • P(i);N_SPINS(f),OGATEB::QAB(F)
      • Refutation
        • B(j);
  • Actual
    • Q(F);N_PINS(f),P_PINQ(c)
    • Threat
      • S(B)
    • Vars
      • S(f);CHECK,P_SPINS(g)::S(H)
      • S(f);CHECK,P_SPINS(g),SBLOCK,XP(C)::S(B)
      • S(f);CHECK,P_SPINS(g),XR(D)::S(H)
      • P(d);OGATEB::B(A)
      • P(i);OGATEB::QAB(F)
      • Q(c);OGATE::QAB1(F),XQ(c)
      • S(g);N_GUARD,P_SPINS(f)::S(H)
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Developed and maintained by Brian Stephenson.
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