MESON Chess Problem Database

Problem Display
PID: 47701 (Q7/1PPBpp1r/K4PPN/R1N1k2p/2P4P/4P3/8/4B1R1 w - - 0 1)

Groeneveld, Cornelis

Gvozdjak, Peter

Prins, Hendrik

2/3 Prize, Goumondy-40 JT, 1986

Q7/1PPBpp1r/K4PPN/R1N1k2p/2P4P/4P3/8/4B1R1

#2

15 + 5

3297 FIDE Album (1986-1988) 1995
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...exf6
      • 2.Bg3#
  • Tries
    • 1.Se6+?
      • 1...Kd6
        • 2.Rd5#
      • 1...Kxf6
        • 2.Sg8#
        • 2.Bc3#
        • 2.Rf5#
      • 1...Ke4!
    • 1.Sf5?
      • threat
        • 2.Bc3#
      • 1...Kxf6
        • 2.Se4#
      • 1...e6!
    • 1.Qd8?
      • threat
        • 2.Qxe7#
      • 1...Kd6
        • 2.Se4#
      • 1...Kxf6
        • 2.Bc3#
      • 1...exf6
        • 2.Bg3#
        • 2.Qe7#
      • 1...e6
        • 2.Bg3#
      • 1...fxg6!
    • 1.b8Q?
      • threat
        • 2.Se4#
      • 1...Kd6
        • 2.Qd5#
        • 2.c8Q#
        • 2.c8S#
        • 2.c8B#
        • 2.c8R#
      • 1...Kxf6!
    • 1.b8B?
      • threat
        • 2.Se4#
      • 1...Kd6
        • 2.Qd5#
        • 2.c8Q#
        • 2.c8S#
        • 2.c8B#
        • 2.c8R#
      • 1...Kxf6!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qxe7#
      • 1...Kd6
        • 2.Bg3#
      • 1...Kxf6
        • 2.Se4#
      • 1...exf6
        • 2.Bc3#
        • 2.Bg3#
        • 2.Qe7#
      • 1...fxg6
        • 2.Bg3#
      • 1...e6
        • 2.Bc3#

This anticipates 22748(1998)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(c);SBLOCK,XP(I)::B(A)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(F)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(K);
      • Threat
        • B(A)
      • Vars
        • K(a);S_FLIGHT,XP(I)::S(G)
      • Refutation
        • P(c);
    • Try
      • Q(O);
      • Threat
        • QAR2(O),XP(c)
      • Vars
        • K(a);S_FLIGHT::S(G)
        • K(a);P_SPINP(c),S_FLIGHT,XP(I)::B(A)
        • P(c);::B(A)
      • Refutation
        • P(d);XP(J)
    • Try
      • P(L);
      • Threat
        • R(F)+S(G)
      • Refutation
        • K(a);S_FLIGHT,XP(I)
    • Try
      • P(L);
      • Threat
        • R(F)+S(G)
      • Refutation
        • K(a);S_FLIGHT,XP(I)
  • Actual
    • Q(O);
    • Threat
      • QAR2(O),XP(c)
    • Vars
      • K(a);P_SPINP(c),S_FLIGHT::B(A)
      • K(a);P_SPINP(d),S_FLIGHT,XP(I)::S(G)
      • P(d);XP(J)::B(A)
      • P(c);::B(A)
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