MESON Chess Problem Database

Problem Display
PID: 75844 (N3B3/R1p2P2/K2k1b2/2N1r2r/PBPPR3/nP1P2Q1/8/8 w - - 0 1)

Degener, Udo

1st Comm., Wola Gulowska, 1998

N3B3/R1p2P2/K2k1b2/2N1r2r/PBPPR3/nP1P2Q1/8/8

#2

14 + 6

15345 Wola Gulowska Award 1998
6166 FIDE Album (1998-2000) 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bg5
      • 2.Qxe5#
    • 1...Bh8
      • 2.f8Q#
      • 2.f8B#
    • 1...c6
      • 2.Rd7#
  • Tries
    • 1.Rxe5?
      • threat
        • 2.Se4#
        • 2.Sb7#
        • 2.Re6#
      • 1...Bxe5
        • 2.f8Q#
        • 2.f8B#
      • 1...Sxc4
        • 2.Se4#
        • 2.Sb7#
      • 1...Rxe5!
    • 1.Qxe5+?
      • 1...Bxe5
        • 2.f8Q#
        • 2.f8B#
      • 1...Rxe5!
    • 1.d5?
      • threat
        • 2.Sb7#
      • 1...Ke7
        • 2.Se6#
      • 1...Sxc4!
  • Keys
    • 1.Sxc7!
      • threat
        • 2.S5e6#
      • 1...Ke7
        • 2.Sb7#
      • 1...Sc2
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(e);N_GUARD,S_CUTR(c)::QAB1(C),XR(b)
    • B(e);N_GUARD::P=Q
    • P(f);OGATE,SBLOCK::R1(K)
  • Tries
    • Try
      • R(H);XR(b)
      • Threat
        • DUALS(3)
      • Vars
        • B(e);N_GUARD,P_SPINB(e),XR(H)::P=Q
      • Refutation
        • R(c);P_SPINR(c),XR(H)
    • Try
      • Q(C);CHECK,XR(b)
      • Vars
        • B(e);XQ(C)::P=Q
      • Refutation
        • R(c);XQ(C)
    • Try
      • P(G);
      • Threat
        • B(E)+S(I),DCHECK
      • Vars
        • K(d);P_SPINP(f),S_FLIGHT::B(E)+S(I)
      • Refutation
        • S(a);XP(F)
  • Actual
    • S(M);XP(f)
    • Threat
      • B(E)+S(I)
    • Vars
      • K(d);S_FLIGHT::B(E)+S(I)
      • S(a);N_GUARD::S(M)
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