MESON Chess Problem Database

Problem Display
PID: 265605 (1Q3N2/3Pp3/p1Pr1ppq/P3kBp1/2KN1pP1/8/5B2/4n3 w - - 0 1)

Pike, Arthur G

The Problemist, 1996

1Q3N2/3Pp3/p1Pr1ppq/P3kBp1/2KN1pP1/8/5B2/4n3

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Sxg6#
    • 1...Qh2
      • 2.Sxg6#
    • 1...Qh3
      • 2.Sxg6#
    • 1...Qh4
      • 2.Sxg6#
    • 1...Qh8
      • 2.Sxg6#
    • 1...Sc2
      • 2.Sf3#
    • 1...Sg2
      • 2.Sf3#
    • 1...Sd3
      • 2.Sf3#
    • 1...Sf3
      • 2.Sxf3#
    • 1...f3
      • 2.Bg3#
  • Tries
    • 1.Bxe1?
      • threat
        • 2.Sf3#
      • 1...f3
        • 2.Bg3#
      • 1...Qh1
        • 2.Sxg6#
      • 1...Qh3
        • 2.Sxg6#
      • 1...gxf5!
    • 1.Qb5+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...axb5+!
    • 1.d8Q?
      • threat
        • 2.Sd7#
        • 2.Qxe7#
      • 1...gxf5
        • 2.Qxe7#
      • 1...f3
        • 2.Bg3#
      • 1...Qg7
        • 2.Sd7#
      • 1...Qh7
        • 2.Sd7#
      • 1...e6
        • 2.Sd7#
        • 2.Qbxd6#
        • 2.Qdxd6#
      • 1...Qxf8!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxe1#
      • 1...Rxd4+
        • 2.Bxd4#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Rxd7
        • 2.Sxd7#
      • 1...f3
        • 2.Bg3#
      • 1...Sc2
        • 2.Sf3#
      • 1...Qh1
        • 2.Sxg6#
      • 1...Qh3
        • 2.Sxg6#
      • 1...Rd5
        • 2.Qxe7#
      • 1...Re6
        • 2.Qc5#
      • 1...Sg2
        • 2.Sf3#
      • 1...Sd3
        • 2.Sf3#
      • 1...Sf3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(i);N_GUARD::S(J),XP(h)
    • S(a);N_GUARD::S(C)
    • S(a);N_GUARD::S(C),XS(a)
    • P(b);OGATEB::B(A)
  • Tries
    • Try
      • B(A);XS(a)
      • Threat
        • S(C)
      • Vars
        • P(b);OGATEB::B(A)
        • Q(i);N_GUARD::S(J),XP(h)
      • Refutation
        • P(h);XB(F)
    • Try
      • Q(I);CHECK,N_PINR(f)
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::QAR1(I),XR(f)
      • Refutation
        • P(e);CHECK,XQ(I)
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);XB(F)::QAR2(H),XP(j)
        • P(b);OGATEB::B(A)
        • Q(i);::S(J)
      • Refutation
        • Q(i);XS(J)
  • Actual
    • Q(I);N_PINR(f)
    • Threat
      • QAR(I),XS(a)
    • Vars
      • R(f);CHECK,OGATE,XS(C)::B(A),XR(f)
      • R(f);CHECK,XP(G)::S(C),XR(f)
      • R(f);XP(H)::S(J),XR(f)
      • P(b);OGATEB::B(A)
      • S(a);N_GUARD::S(C)
      • Q(i);N_GUARD::S(J),XP(h)
      • R(f);OGATE::QAR2(I),XP(j)
      • R(f);N_GUARD::QAR2(I)
      • S(a);N_GUARD::S(C),XS(a)
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