MESON Chess Problem Database

Problem Display
PID: 145251 (5N2/1P1Bp3/p1P1Q1P1/2k3KR/n1P1q3/P1PpPR2/n2N4/b2b4 w - - 0 1)

Fulpius, Jaques

Problem Observer, 1992

5N2/1P1Bp3/p1P1Q1P1/2k3KR/n1P1q3/P1PpPR2/n2N4/b2b4

#2

14 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6
      • 2.Qxc6#
    • 1...Sb6
      • 2.Sxe4#
  • Tries
    • 1.Sb3+?
      • 1...Kb6
        • 2.b8Q#
      • 1...Bxb3!
    • 1.Qd5+?
      • 1...Kb6
        • 2.b8Q#
      • 1...Qxd5+!
  • Keys
    • 1.b8Q!
      • threat
        • 2.Sxe4#
      • 1...Qd5+
        • 2.Qxd5#
      • 1...Qf5+
        • 2.Rxf5#
      • 1...Qxg6+
        • 2.Kxg6#
      • 1...Qxe3+
        • 2.Qxe3#
      • 1...Qf4+
        • 2.Kxf4#
      • 1...Qg4+
        • 2.Kxg4#
      • 1...Qh4+
        • 2.Kxh4#
      • 1...Qe5+
        • 2.Qexe5#
      • 1...Qxf3
        • 2.Qxe7#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...Qxc4
        • 2.Qxc4#
      • 1...Qxe6
        • 2.Sxe6#
      • 1...Bxf3
        • 2.Sb3#
      • 1...S2xc3
        • 2.Qb4#
      • 1...S4xc3
        • 2.Qa7#
      • 1...Qd4
        • 2.exd4#

This is after

After P. O'Shea.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 1
  • Sets
    • Q(f);OGATE,XP(I)::QAR1(J),XQ(f)
    • S(e);SBLOCK::S(A),XQ(f)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(g);S_FLIGHT::P=Q
      • Refutation
        • B(b);XS(A)
    • Try
      • Q(J);CHECK
      • Vars
        • K(g);S_FLIGHT::P=Q
      • Refutation
        • Q(f);CHECK,XQ(J)
  • Actual
    • P(L);
    • Threat
      • S(A),XQ(f)
    • Vars
      • Q(f);CHECK,N_GUARD::QAR1(J),XQ(f)
      • Q(f);CHECK,N_GUARD::R(E),XQ(f)
      • Q(f);CHECK,XP(K)::R(H)+K(G),XQ(f)
      • Q(f);CHECK,OGATE,XP(D)::QAB(J),XQ(f)
      • Q(f);CHECK::R(H)+K(G),XQ(f)
      • Q(f);CHECK,N_GUARD::QAR2(J),XQ(f)
      • Q(f);N_GUARD,XR(E)::QAB(J),XP(i)
      • Q(f);OGATE,XP(I)::QAR1(J),XQ(f)
      • Q(f);OGATE,XP(F)::QAR1(J),XQ(f)
      • Q(f);XQ(J)::S(N),XQ(f)
      • B(b);N_GUARD,XR(E)::S(A)
      • S(c);N_GUARD,XP(C)::QAB1(L)
      • S(e);N_GUARD,XP(C)::QAB(L)
      • Q(f);OGATE::P(D),XQ(f)
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